======================================
| [2224.522810][T16956] #1: ffff8880101d4f18 (k-sk_lock-AF_INET#2){+.+.}-{0:0}, at: __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [2224.523191][T16956] #2: ffff88800b85eb48 (&msk->fallback_lock){+.-.}-{3:3}, at: __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2224.523567][T16956]
| [ 2224.523567][T16956] stack backtrace:
[ 2224.523823][T16956] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2224.523829][T16956] Call Trace:
[ 2224.523833][T16956]  <TASK>
[2224.523836][T16956] dump_stack_lvl (lib/dump_stack.c:123) 
[2224.523845][T16956] print_deadlock_bug (kernel/locking/lockdep.c:3047) 
[2224.523853][T16956] validate_chain (kernel/locking/lockdep.c:3901) 
[2224.523858][T16956] __lock_acquire (kernel/locking/lockdep.c:5240) 
[2224.523864][T16956] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[2224.523868][T16956] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[2224.523871][T16956] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[2224.523878][T16956] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[2224.523881][T16956] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[2224.523885][T16956] _raw_spin_lock_bh (./include/linux/spinlock_api_smp.h:127 kernel/locking/spinlock.c:178) 
[2224.523891][T16956] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[2224.523893][T16956] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[2224.523897][T16956] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[2224.523904][T16956] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[2224.523907][T16956] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[2224.523910][T16956] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[2224.523914][T16956] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[2224.523920][T16956] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[2224.523925][T16956] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[2224.523934][T16956] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[2224.523941][T16956] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[2224.523943][T16956] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[2224.523946][T16956] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[2224.523949][T16956] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[2224.523952][T16956] ? release_sock (net/core/sock.c:3747) 
[2224.523959][T16956] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[2224.523963][T16956] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[2224.523970][T16956] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[2224.523973][T16956] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[2224.523977][T16956] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[2224.523984][T16956] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[2224.523988][T16956] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[2224.523994][T16956] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[2224.523999][T16956] ? __pfx_sock_write_iter (net/socket.c:1163) 
[2224.524005][T16956] ? ksys_write (fs/read_write.c:738) 
[2224.524013][T16956] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[2224.524016][T16956] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[2224.524019][T16956] ? __lock_release (kernel/locking/lockdep.c:5539) 
[2224.524023][T16956] ? __pfx_vfs_write (fs/read_write.c:667) 
[2224.524026][T16956] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[2224.524034][T16956] ksys_write (fs/read_write.c:738) 
[2224.524037][T16956] ? __pfx_ksys_write (fs/read_write.c:728) 
[2224.524040][T16956] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[2224.524047][T16956] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[2224.524052][T16956] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2224.524055][T16956] RIP: 0033:0x7f471c970337
[ 2224.524062][T16956] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2224.524066][T16956] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2224.524073][T16956] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2224.524076][T16956] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2224.524078][T16956] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2224.524080][T16956] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2224.524081][T16956] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2224.524087][T16956]  </TASK>
| [ 2250.517322][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2250.517734][    C2] rcu: 2-....: (25984 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=6496
| [ 2250.518276][    C2] rcu: (t=26000 jiffies g=1286133 q=1128 ncpus=4)
[ 2250.518540][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2250.518543][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2250.518555][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2250.518558][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2250.518562][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2250.518564][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2250.518566][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2250.518568][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2250.518570][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2250.518572][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2250.518574][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2250.518578][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2250.518580][    C2] PKRU: 55555554
[ 2250.518581][    C2] Call Trace:
[ 2250.518583][    C2]  <TASK>
[ 2250.518586][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2250.518594][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2250.518600][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2250.518603][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2250.518608][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2250.518616][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2250.518620][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2250.518626][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2250.518629][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2250.518632][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2250.518637][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2250.518643][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2250.518648][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2250.518656][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2250.518664][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2250.518666][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2250.518669][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2250.518672][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2250.518675][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2250.518682][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2250.518685][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2250.518692][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2250.518697][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2250.518700][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2250.518707][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2250.518711][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2250.518717][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2250.518723][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2250.518729][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2250.518737][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2250.518740][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2250.518742][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2250.518746][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2250.518750][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2250.518757][ C2] ksys_write (fs/read_write.c:738) 
[ 2250.518760][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2250.518762][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2250.518771][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2250.518775][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2250.518778][    C2] RIP: 0033:0x7f471c970337
[ 2250.518785][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2250.518787][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2250.518791][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2250.518793][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2250.518795][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2250.518797][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2250.518799][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2276.512969][ C2] hardirqs last enabled at (64230): _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
| [ 2276.512987][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2276.512991][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2276.512999][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2276.513013][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2276.513015][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2276.513021][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2276.513024][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2276.513027][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2276.513030][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2276.513031][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2276.513034][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2276.513036][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2276.513038][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2276.513041][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2276.513044][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2276.513046][    C2] PKRU: 55555554
[ 2276.513048][    C2] Call Trace:
[ 2276.513050][    C2]  <TASK>
[ 2276.513054][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2276.513061][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2276.513068][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2276.513070][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2276.513075][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2276.513080][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2276.513084][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2276.513091][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2276.513094][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2276.513097][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2276.513101][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2276.513107][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2276.513113][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2276.513122][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2276.513130][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2276.513132][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2276.513136][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2276.513138][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2276.513141][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2276.513148][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2276.513152][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2276.513160][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2276.513164][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2276.513168][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2276.513174][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2276.513179][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2276.513185][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2276.513191][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2276.513198][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2276.513206][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2276.513210][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2276.513212][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2276.513216][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2276.513220][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2276.513228][ C2] ksys_write (fs/read_write.c:738) 
[ 2276.513232][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2276.513234][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2276.513242][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2276.513247][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2276.513252][    C2] RIP: 0033:0x7f471c970337
[ 2276.513258][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2276.513260][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2276.513263][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2276.513265][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2276.513267][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2276.513269][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2276.513271][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2291.102076][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2291.102433][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 2291.102711][    C2] NMI backtrace for cpu 2
| [ 2291.102728][    C2] Tainted: [L]=SOFTLOCKUP
[ 2291.102729][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2291.102732][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2291.102744][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2291.102747][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2291.102751][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2291.102753][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2291.102755][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2291.102757][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2291.102759][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2291.102761][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2291.102764][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2291.102767][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2291.102769][    C2] PKRU: 55555554
[ 2291.102771][    C2] Call Trace:
[ 2291.102773][    C2]  <TASK>
[ 2291.102776][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2291.102784][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2291.102791][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2291.102794][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2291.102799][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2291.102807][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2291.102811][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2291.102818][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2291.102820][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2291.102823][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2291.102828][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2291.102834][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2291.102839][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2291.102849][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2291.102856][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2291.102859][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2291.102862][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2291.102864][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2291.102867][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2291.102874][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2291.102878][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2291.102886][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2291.102890][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2291.102894][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2291.102901][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2291.102905][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2291.102911][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2291.102917][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2291.102924][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2291.102931][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2291.102935][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2291.102938][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2291.102942][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2291.102945][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2291.102953][ C2] ksys_write (fs/read_write.c:738) 
[ 2291.102956][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2291.102959][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2291.102967][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2291.102971][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2291.102975][    C2] RIP: 0033:0x7f471c970337
[ 2291.102981][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2291.102984][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2291.102987][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2291.102989][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2291.102991][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2291.102993][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2291.102995][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2316.512984][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2316.512988][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2316.512996][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2316.513011][    C2] Tainted: [L]=SOFTLOCKUP
[ 2316.513013][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2316.513015][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2316.513021][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2316.513024][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2316.513027][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2316.513029][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2316.513032][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2316.513034][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2316.513036][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2316.513038][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2316.513041][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2316.513045][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2316.513046][    C2] PKRU: 55555554
[ 2316.513048][    C2] Call Trace:
[ 2316.513050][    C2]  <TASK>
[ 2316.513054][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2316.513061][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2316.513068][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2316.513070][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2316.513075][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2316.513080][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2316.513084][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2316.513091][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2316.513093][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2316.513096][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2316.513101][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2316.513107][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2316.513112][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2316.513121][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2316.513129][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2316.513132][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2316.513135][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2316.513137][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2316.513140][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2316.513147][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2316.513151][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2316.513159][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2316.513163][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2316.513167][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2316.513174][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2316.513178][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2316.513185][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2316.513191][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2316.513197][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2316.513205][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2316.513209][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2316.513211][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2316.513215][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2316.513219][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2316.513227][ C2] ksys_write (fs/read_write.c:738) 
[ 2316.513230][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2316.513233][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2316.513241][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2316.513246][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2316.513251][    C2] RIP: 0033:0x7f471c970337
[ 2316.513257][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2316.513260][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2316.513263][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2316.513265][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2316.513267][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2316.513269][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2316.513271][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2328.520321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2328.520746][    C2] rcu: 2-....: (103920 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=25983
| [ 2328.521145][    C2] rcu: (t=104003 jiffies g=1286133 q=2619 ncpus=4)
| [ 2328.521521][    C2] Tainted: [L]=SOFTLOCKUP
[ 2328.521523][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2328.521525][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2328.521539][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2328.521542][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2328.521546][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2328.521548][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2328.521551][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2328.521553][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2328.521554][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2328.521557][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2328.521559][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2328.521563][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2328.521565][    C2] PKRU: 55555554
[ 2328.521566][    C2] Call Trace:
[ 2328.521568][    C2]  <TASK>
[ 2328.521571][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2328.521578][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2328.521584][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2328.521587][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2328.521592][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2328.521601][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2328.521605][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2328.521611][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2328.521614][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2328.521617][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2328.521622][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2328.521628][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2328.521633][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2328.521643][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2328.521650][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2328.521653][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2328.521656][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2328.521658][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2328.521661][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2328.521669][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2328.521672][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2328.521679][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2328.521683][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2328.521687][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2328.521694][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2328.521698][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2328.521705][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2328.521710][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2328.521717][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2328.521725][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2328.521728][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2328.521731][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2328.521734][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2328.521738][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2328.521745][ C2] ksys_write (fs/read_write.c:738) 
[ 2328.521748][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2328.521751][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2328.521759][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2328.521764][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2328.521768][    C2] RIP: 0033:0x7f471c970337
[ 2328.521773][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2328.521776][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2328.521779][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2328.521781][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2328.521783][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2328.521785][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2328.521787][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2356.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2356.512988][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2356.512995][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2356.513010][    C2] Tainted: [L]=SOFTLOCKUP
[ 2356.513011][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2356.513014][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2356.513019][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2356.513022][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2356.513026][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2356.513028][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2356.513030][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2356.513032][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2356.513033][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2356.513035][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2356.513037][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2356.513041][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2356.513043][    C2] PKRU: 55555554
[ 2356.513045][    C2] Call Trace:
[ 2356.513048][    C2]  <TASK>
[ 2356.513053][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2356.513061][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2356.513067][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2356.513070][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2356.513075][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2356.513080][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2356.513084][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2356.513091][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2356.513094][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2356.513097][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2356.513102][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2356.513108][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2356.513113][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2356.513122][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2356.513129][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2356.513132][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2356.513135][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2356.513138][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2356.513141][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2356.513148][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2356.513152][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2356.513161][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2356.513164][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2356.513168][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2356.513175][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2356.513180][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2356.513186][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2356.513192][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2356.513198][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2356.513206][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2356.513210][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2356.513213][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2356.513217][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2356.513221][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2356.513228][ C2] ksys_write (fs/read_write.c:738) 
[ 2356.513232][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2356.513234][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2356.513242][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2356.513247][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2356.513252][    C2] RIP: 0033:0x7f471c970337
[ 2356.513257][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2356.513259][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2356.513262][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2356.513264][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2356.513266][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2356.513268][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2356.513270][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2384.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2384.512986][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2384.512994][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2384.513009][    C2] Tainted: [L]=SOFTLOCKUP
[ 2384.513011][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2384.513013][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 2384.513022][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 2384.513025][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 2384.513029][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2384.513031][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2384.513033][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2384.513035][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2384.513036][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2384.513038][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2384.513042][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2384.513046][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2384.513048][    C2] PKRU: 55555554
[ 2384.513049][    C2] Call Trace:
[ 2384.513054][    C2]  <TASK>
[ 2384.513056][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2384.513065][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2384.513073][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2384.513078][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2384.513081][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2384.513086][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2384.513091][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2384.513095][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2384.513102][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2384.513105][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2384.513108][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2384.513112][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2384.513118][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2384.513124][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2384.513133][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2384.513141][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2384.513143][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2384.513146][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2384.513149][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2384.513152][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2384.513159][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2384.513163][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2384.513170][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2384.513174][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2384.513178][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2384.513186][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2384.513190][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2384.513197][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2384.513202][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2384.513209][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2384.513217][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2384.513221][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2384.513223][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2384.513227][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2384.513231][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2384.513239][ C2] ksys_write (fs/read_write.c:738) 
[ 2384.513242][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2384.513245][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2384.513253][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2384.513258][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2384.513263][    C2] RIP: 0033:0x7f471c970337
[ 2384.513269][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2384.513272][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2384.513275][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2384.513277][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2384.513279][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2384.513280][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2384.513282][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2389.405852][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2389.406149][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 2389.406341][    C2] NMI backtrace for cpu 2
| [ 2389.406362][    C2] Tainted: [L]=SOFTLOCKUP
[ 2389.406363][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2389.406366][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2389.406380][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2389.406383][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2389.406388][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2389.406390][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2389.406392][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2389.406394][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2389.406395][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2389.406397][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2389.406400][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2389.406403][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2389.406406][    C2] PKRU: 55555554
[ 2389.406407][    C2] Call Trace:
[ 2389.406410][    C2]  <TASK>
[ 2389.406414][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2389.406422][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2389.406429][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2389.406432][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2389.406436][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2389.406445][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2389.406449][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2389.406456][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2389.406458][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2389.406461][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2389.406466][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2389.406472][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2389.406477][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2389.406486][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2389.406494][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2389.406496][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2389.406499][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2389.406502][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2389.406505][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2389.406513][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2389.406517][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2389.406524][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2389.406528][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2389.406532][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2389.406539][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2389.406543][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2389.406549][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2389.406555][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2389.406562][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2389.406569][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2389.406573][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2389.406576][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2389.406579][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2389.406583][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2389.406590][ C2] ksys_write (fs/read_write.c:738) 
[ 2389.406594][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2389.406596][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2389.406604][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2389.406609][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2389.406613][    C2] RIP: 0033:0x7f471c970337
[ 2389.406618][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2389.406621][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2389.406624][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2389.406626][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2389.406628][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2389.406630][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2389.406632][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2406.523341][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2406.523923][    C2] rcu: 2-....: (181858 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=45358
| [ 2406.524438][    C2] rcu: (t=182006 jiffies g=1286133 q=4021 ncpus=4)
| [ 2406.524737][    C2] Tainted: [L]=SOFTLOCKUP
[ 2406.524738][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2406.524746][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2406.524777][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2406.524781][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2406.524787][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2406.524789][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2406.524791][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2406.524794][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2406.524795][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2406.524798][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2406.524800][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2406.524804][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2406.524806][    C2] PKRU: 55555554
[ 2406.524808][    C2] Call Trace:
[ 2406.524809][    C2]  <TASK>
[ 2406.524813][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2406.524823][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2406.524832][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2406.524835][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2406.524841][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2406.524852][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2406.524857][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2406.524864][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2406.524866][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2406.524869][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2406.524874][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2406.524880][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2406.524885][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2406.524893][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2406.524902][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2406.524905][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2406.524908][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2406.524910][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2406.524913][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2406.524925][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2406.524928][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2406.524936][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2406.524940][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2406.524944][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2406.524953][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2406.524957][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2406.524963][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2406.524969][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2406.524975][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2406.524988][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2406.524991][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2406.524994][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2406.524998][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2406.525001][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2406.525009][ C2] ksys_write (fs/read_write.c:738) 
[ 2406.525012][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2406.525014][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2406.525023][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2406.525028][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2406.525032][    C2] RIP: 0033:0x7f471c970337
[ 2406.525047][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2406.525049][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2406.525052][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2406.525054][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2406.525056][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2406.525058][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2406.525060][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2432.512993][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2432.512997][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2432.513005][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2432.513022][    C2] Tainted: [L]=SOFTLOCKUP
[ 2432.513023][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2432.513026][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2432.513031][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2432.513035][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2432.513038][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2432.513041][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2432.513043][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2432.513045][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2432.513047][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2432.513050][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2432.513052][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2432.513056][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2432.513058][    C2] PKRU: 55555554
[ 2432.513059][    C2] Call Trace:
[ 2432.513063][    C2]  <TASK>
[ 2432.513067][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2432.513075][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2432.513082][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2432.513084][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2432.513089][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2432.513094][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2432.513099][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2432.513105][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2432.513108][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2432.513111][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2432.513116][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2432.513122][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2432.513127][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2432.513136][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2432.513144][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2432.513147][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2432.513150][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2432.513153][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2432.513156][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2432.513163][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2432.513167][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2432.513175][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2432.513179][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2432.513183][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2432.513190][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2432.513195][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2432.513201][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2432.513207][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2432.513214][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2432.513222][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2432.513226][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2432.513229][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2432.513233][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2432.513237][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2432.513244][ C2] ksys_write (fs/read_write.c:738) 
[ 2432.513248][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2432.513250][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2432.513258][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2432.513263][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2432.513268][    C2] RIP: 0033:0x7f471c970337
[ 2432.513275][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2432.513277][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2432.513281][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2432.513283][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2432.513285][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2432.513287][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2432.513289][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2432.513283][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
| [ 2432.513285][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
| [ 2432.513287][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
| [ 2432.513289][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2432.513295][    C2]  </TASK>
[ 2459.037460][   T44] INFO: task mptcp_connect:16951 blocked for more than 122 seconds.
[ 2459.037842][   T44]       Tainted: G             L      6.16.0-rc6-virtme #1
[ 2459.038172][   T44]       Blocked by coredump.
[ 2459.038335][   T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 2459.038629][   T44] task:mptcp_connect   state:D stack:26032 pid:16951 tgid:16951 ppid:16948  task_flags:0x40010c flags:0x00004002
[ 2459.039075][   T44] Call Trace:
[ 2459.039202][   T44]  <TASK>
[ 2459.039290][ T44] __schedule (kernel/sched/core.c:5397 kernel/sched/core.c:6786) 
[ 2459.039602][ T44] ? try_to_wake_up (kernel/sched/core.c:4014 kernel/sched/core.c:4343) 
[ 2459.039782][ T44] ? __pfx___schedule (kernel/sched/core.c:6663) 
[ 2459.039941][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2459.040113][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2459.040361][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2459.040525][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2459.040692][ T44] ? schedule (kernel/sched/core.c:6845 kernel/sched/core.c:6878) 
[ 2459.040813][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2459.040982][ T44] schedule (kernel/sched/core.c:6865 kernel/sched/core.c:6879) 
[ 2459.041184][ T44] synchronize_rcu_expedited (kernel/rcu/rcu.h:156 kernel/rcu/tree_exp.h:67 kernel/rcu/tree_exp.h:274 kernel/rcu/tree_exp.h:1013) 
[ 2459.041355][ T44] ? __pfx_synchronize_rcu_expedited (kernel/rcu/tree_exp.h:962) 
[ 2459.041567][ T44] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383) 
[ 2459.041860][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2459.042019][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2459.042178][ T44] ? __pfx_wait_rcu_exp_gp (kernel/rcu/tree_exp.h:488) 
[ 2459.042348][ T44] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2459.042589][ T44] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2459.042752][ T44] namespace_unlock (fs/namespace.c:1804) 
[ 2459.042939][ T44] ? umount_tree (./include/linux/list.h:1024 fs/namespace.c:1909) 
[ 2459.043101][ T44] ? __pfx_namespace_unlock (fs/namespace.c:1775) 
[ 2459.043357][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2459.043532][ T44] ? __pfx_umount_tree (fs/namespace.c:1857) 
[ 2459.043692][ T44] ? put_mnt_ns (fs/namespace.c:6282 fs/namespace.c:6274) 
[ 2459.043814][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2459.043982][ T44] put_mnt_ns (fs/namespace.c:6283 fs/namespace.c:6274) 
[ 2459.044188][ T44] free_nsproxy (kernel/nsproxy.c:189) 
[ 2459.044398][ T44] do_exit (./include/linux/task_work.h:40 kernel/exit.c:964) 
[ 2459.044525][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2459.044688][ T44] ? __pfx_do_exit (kernel/exit.c:897) 
[ 2459.044928][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2459.045091][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2459.045255][ T44] do_group_exit (kernel/exit.c:1086) 
[ 2459.045424][ T44] __x64_sys_exit_group (kernel/exit.c:1114) 
[ 2459.045663][ T44] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 2459.045835][ T44] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2459.046006][ T44] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2459.046215][   T44] RIP: 0033:0x7f1e66bbcadd
[ 2459.046479][   T44] RSP: 002b:00007ffe10f0a388 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 2459.046727][   T44] RAX: ffffffffffffffda RBX: 00007f1e66cd89c0 RCX: 00007f1e66bbcadd
[ 2459.046971][   T44] RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
[ 2459.047310][   T44] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000028
[ 2459.047562][   T44] R10: 00007ffe10f0a210 R11: 0000000000000246 R12: 00007f1e66cd89c0
[ 2459.047895][   T44] R13: 00007f1e66cddf20 R14: 0000000000000001 R15: 00007f1e66cddf08
| [ 2460.512993][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2460.512998][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2460.513005][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2460.513021][    C2] Tainted: [L]=SOFTLOCKUP
[ 2460.513023][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2460.513026][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2460.513032][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2460.513035][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2460.513039][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2460.513041][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2460.513043][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2460.513045][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2460.513047][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2460.513049][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2460.513052][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2460.513056][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2460.513058][    C2] PKRU: 55555554
[ 2460.513060][    C2] Call Trace:
[ 2460.513064][    C2]  <TASK>
[ 2460.513069][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2460.513077][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2460.513084][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2460.513086][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2460.513091][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2460.513096][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2460.513101][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2460.513108][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2460.513111][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2460.513114][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2460.513118][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2460.513125][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2460.513130][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2460.513139][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2460.513147][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2460.513150][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2460.513153][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2460.513155][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2460.513158][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2460.513165][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2460.513170][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2460.513178][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2460.513181][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2460.513185][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2460.513192][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2460.513196][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2460.513203][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2460.513209][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2460.513215][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2460.513223][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2460.513228][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2460.513230][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2460.513234][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2460.513238][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2460.513246][ C2] ksys_write (fs/read_write.c:738) 
[ 2460.513250][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2460.513252][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2460.513260][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2460.513266][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2460.513271][    C2] RIP: 0033:0x7f471c970337
[ 2460.513277][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2460.513280][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2460.513283][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2460.513285][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2460.513287][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2460.513289][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2460.513291][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2484.526323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2484.526756][    C2] rcu: 2-....: (259811 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=64673
| [ 2484.527132][    C2] rcu: (t=260009 jiffies g=1286133 q=5322 ncpus=4)
| [ 2484.527498][    C2] Tainted: [L]=SOFTLOCKUP
[ 2484.527499][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2484.527501][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2484.527515][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2484.527518][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2484.527523][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2484.527525][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2484.527527][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2484.527529][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2484.527531][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2484.527533][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2484.527536][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2484.527540][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2484.527542][    C2] PKRU: 55555554
[ 2484.527543][    C2] Call Trace:
[ 2484.527545][    C2]  <TASK>
[ 2484.527547][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2484.527555][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2484.527560][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2484.527563][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2484.527568][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2484.527576][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2484.527579][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2484.527586][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2484.527588][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2484.527591][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2484.527596][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2484.527602][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2484.527607][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2484.527616][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2484.527623][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2484.527626][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2484.527629][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2484.527632][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2484.527635][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2484.527642][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2484.527645][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2484.527653][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2484.527656][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2484.527660][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2484.527667][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2484.527671][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2484.527677][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2484.527683][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2484.527689][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2484.527697][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2484.527701][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2484.527703][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2484.527707][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2484.527711][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2484.527718][ C2] ksys_write (fs/read_write.c:738) 
[ 2484.527722][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2484.527724][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2484.527732][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2484.527736][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2484.527740][    C2] RIP: 0033:0x7f471c970337
[ 2484.527747][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2484.527749][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2484.527752][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2484.527754][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2484.527756][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2484.527758][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2484.527759][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2487.709901][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2487.710182][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 2487.710381][    C2] NMI backtrace for cpu 2
| [ 2487.710401][    C2] Tainted: [L]=SOFTLOCKUP
[ 2487.710403][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2487.710406][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2487.710419][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 2487.710422][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2487.710427][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2487.710429][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2487.710431][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2487.710433][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2487.710435][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2487.710437][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2487.710439][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2487.710443][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2487.710445][    C2] PKRU: 55555554
[ 2487.710446][    C2] Call Trace:
[ 2487.710448][    C2]  <TASK>
[ 2487.710453][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2487.710460][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2487.710466][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2487.710469][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2487.710473][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2487.710481][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2487.710485][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2487.710492][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2487.710495][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2487.710497][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2487.710502][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2487.710508][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2487.710513][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2487.710525][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2487.710533][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2487.710535][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2487.710539][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2487.710541][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2487.710544][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2487.710552][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2487.710555][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2487.710563][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2487.710567][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2487.710571][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2487.710577][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2487.710581][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2487.710588][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2487.710593][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2487.710600][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2487.710608][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2487.710611][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2487.710614][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2487.710618][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2487.710621][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2487.710629][ C2] ksys_write (fs/read_write.c:738) 
[ 2487.710632][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2487.710635][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2487.710643][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2487.710648][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2487.710652][    C2] RIP: 0033:0x7f471c970337
[ 2487.710658][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2487.710661][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2487.710664][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2487.710666][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2487.710668][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2487.710670][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2487.710671][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2512.513026][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2512.513030][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2512.513041][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2512.513062][    C2] Tainted: [L]=SOFTLOCKUP
[ 2512.513064][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2512.513067][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2512.513073][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2512.513076][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2512.513082][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2512.513085][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2512.513087][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2512.513089][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2512.513090][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2512.513093][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2512.513095][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2512.513099][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2512.513101][    C2] PKRU: 55555554
[ 2512.513102][    C2] Call Trace:
[ 2512.513109][    C2]  <TASK>
[ 2512.513113][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2512.513121][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2512.513139][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2512.513142][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2512.513146][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2512.513151][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2512.513155][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2512.513162][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2512.513165][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2512.513168][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2512.513173][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2512.513181][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2512.513186][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2512.513202][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2512.513211][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2512.513213][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2512.513217][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2512.513219][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2512.513222][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2512.513232][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2512.513237][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2512.513245][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2512.513248][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2512.513252][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2512.513266][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2512.513270][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2512.513278][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2512.513284][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2512.513291][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2512.513301][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2512.513307][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2512.513309][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2512.513314][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2512.513318][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2512.513325][ C2] ksys_write (fs/read_write.c:738) 
[ 2512.513329][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2512.513331][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2512.513339][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2512.513344][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2512.513351][    C2] RIP: 0033:0x7f471c970337
[ 2512.513360][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2512.513362][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2512.513365][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2512.513367][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2512.513369][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2512.513371][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2512.513373][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2540.513020][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2540.513024][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2540.513032][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2540.513054][    C2] Tainted: [L]=SOFTLOCKUP
[ 2540.513056][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2540.513059][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2540.513065][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2540.513068][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2540.513071][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2540.513074][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2540.513076][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2540.513078][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2540.513080][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2540.513082][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2540.513085][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2540.513089][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2540.513091][    C2] PKRU: 55555554
[ 2540.513092][    C2] Call Trace:
[ 2540.513099][    C2]  <TASK>
[ 2540.513104][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2540.513112][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2540.513125][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2540.513127][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2540.513132][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2540.513138][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2540.513144][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2540.513151][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2540.513154][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2540.513157][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2540.513162][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2540.513169][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2540.513174][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2540.513184][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2540.513193][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2540.513196][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2540.513199][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2540.513202][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2540.513205][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2540.513213][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2540.513217][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2540.513227][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2540.513230][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2540.513234][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2540.513247][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2540.513251][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2540.513260][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2540.513265][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2540.513272][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2540.513284][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2540.513289][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2540.513291][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2540.513296][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2540.513299][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2540.513307][ C2] ksys_write (fs/read_write.c:738) 
[ 2540.513310][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2540.513313][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2540.513321][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2540.513328][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2540.513338][    C2] RIP: 0033:0x7f471c970337
[ 2540.513348][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2540.513350][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2540.513354][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2540.513356][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2540.513358][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2540.513360][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2540.513362][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2562.529323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2562.529786][    C2] rcu: 2-....: (337751 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=84009
| [ 2562.530300][    C2] rcu: (t=338012 jiffies g=1286133 q=6737 ncpus=4)
| [ 2562.530547][    C2] Tainted: [L]=SOFTLOCKUP
[ 2562.530548][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2562.530551][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 2562.530563][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 2562.530566][    C2] RSP: 0018:ffffc9000029f5b8 EFLAGS: 00000282
[ 2562.530570][    C2] RAX: ffff88800b85eb34 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2562.530573][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2562.530575][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2562.530577][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2562.530579][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2562.530581][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2562.530583][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2562.530587][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2562.530589][    C2] PKRU: 55555554
[ 2562.530590][    C2] Call Trace:
[ 2562.530592][    C2]  <TASK>
[ 2562.530594][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2562.530604][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2562.530611][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2562.530616][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2562.530619][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2562.530624][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2562.530632][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2562.530636][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2562.530642][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2562.530645][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2562.530648][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2562.530653][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2562.530659][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2562.530664][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2562.530673][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2562.530680][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2562.530683][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2562.530686][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2562.530689][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2562.530691][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2562.530699][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2562.530702][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2562.530709][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2562.530713][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2562.530717][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2562.530724][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2562.530728][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2562.530733][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2562.530739][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2562.530745][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2562.530752][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2562.530755][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2562.530757][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2562.530761][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2562.530765][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2562.530772][ C2] ksys_write (fs/read_write.c:738) 
[ 2562.530775][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2562.530777][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2562.530785][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2562.530789][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2562.530794][    C2] RIP: 0033:0x7f471c970337
[ 2562.530799][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2562.530802][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2562.530805][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2562.530807][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2562.530809][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2562.530811][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2562.530813][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2562.530807][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
| [ 2562.530809][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
| [ 2562.530811][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
| [ 2562.530813][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2562.530819][    C2]  </TASK>
[ 2581.917386][   T44] INFO: task mptcp_connect:16951 blocked for more than 245 seconds.
[ 2581.917801][   T44]       Tainted: G             L      6.16.0-rc6-virtme #1
[ 2581.918112][   T44]       Blocked by coredump.
[ 2581.918270][   T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 2581.918562][   T44] task:mptcp_connect   state:D stack:26032 pid:16951 tgid:16951 ppid:16948  task_flags:0x40010c flags:0x00004002
[ 2581.919001][   T44] Call Trace:
[ 2581.919131][   T44]  <TASK>
[ 2581.919215][ T44] __schedule (kernel/sched/core.c:5397 kernel/sched/core.c:6786) 
[ 2581.919397][ T44] ? try_to_wake_up (kernel/sched/core.c:4014 kernel/sched/core.c:4343) 
[ 2581.919642][ T44] ? __pfx___schedule (kernel/sched/core.c:6663) 
[ 2581.919805][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2581.919968][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2581.920126][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2581.920415][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2581.920585][ T44] ? schedule (kernel/sched/core.c:6845 kernel/sched/core.c:6878) 
[ 2581.920708][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2581.920869][ T44] schedule (kernel/sched/core.c:6865 kernel/sched/core.c:6879) 
[ 2581.921071][ T44] synchronize_rcu_expedited (kernel/rcu/rcu.h:156 kernel/rcu/tree_exp.h:67 kernel/rcu/tree_exp.h:274 kernel/rcu/tree_exp.h:1013) 
[ 2581.921234][ T44] ? __pfx_synchronize_rcu_expedited (kernel/rcu/tree_exp.h:962) 
[ 2581.921442][ T44] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383) 
[ 2581.921644][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2581.921889][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2581.922052][ T44] ? __pfx_wait_rcu_exp_gp (kernel/rcu/tree_exp.h:488) 
[ 2581.922214][ T44] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2581.922389][ T44] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2581.922656][ T44] namespace_unlock (fs/namespace.c:1804) 
[ 2581.922824][ T44] ? umount_tree (./include/linux/list.h:1024 fs/namespace.c:1909) 
[ 2581.922984][ T44] ? __pfx_namespace_unlock (fs/namespace.c:1775) 
[ 2581.923143][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2581.923394][ T44] ? __pfx_umount_tree (fs/namespace.c:1857) 
[ 2581.923553][ T44] ? put_mnt_ns (fs/namespace.c:6282 fs/namespace.c:6274) 
[ 2581.923674][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2581.923836][ T44] put_mnt_ns (fs/namespace.c:6283 fs/namespace.c:6274) 
[ 2581.924037][ T44] free_nsproxy (kernel/nsproxy.c:189) 
[ 2581.924201][ T44] do_exit (./include/linux/task_work.h:40 kernel/exit.c:964) 
[ 2581.924330][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2581.924490][ T44] ? __pfx_do_exit (kernel/exit.c:897) 
[ 2581.924652][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2581.924893][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2581.925052][ T44] do_group_exit (kernel/exit.c:1086) 
[ 2581.925213][ T44] __x64_sys_exit_group (kernel/exit.c:1114) 
[ 2581.925486][ T44] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 2581.925656][ T44] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2581.925817][ T44] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2581.926014][   T44] RIP: 0033:0x7f1e66bbcadd
[ 2581.926268][   T44] RSP: 002b:00007ffe10f0a388 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 2581.926522][   T44] RAX: ffffffffffffffda RBX: 00007f1e66cd89c0 RCX: 00007f1e66bbcadd
[ 2581.926781][   T44] RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
[ 2581.927109][   T44] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000028
[ 2581.927365][   T44] R10: 00007ffe10f0a210 R11: 0000000000000246 R12: 00007f1e66cd89c0
[ 2581.927608][   T44] R13: 00007f1e66cddf20 R14: 0000000000000001 R15: 00007f1e66cddf08
| [ 2586.014234][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2586.014547][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 2586.014808][    C2] NMI backtrace for cpu 2
| [ 2586.014829][    C2] Tainted: [L]=SOFTLOCKUP
[ 2586.014831][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2586.014833][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2586.014846][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2586.014849][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2586.014853][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2586.014855][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2586.014857][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2586.014859][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2586.014861][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2586.014863][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2586.014865][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2586.014869][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2586.014871][    C2] PKRU: 55555554
[ 2586.014872][    C2] Call Trace:
[ 2586.014875][    C2]  <TASK>
[ 2586.014879][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2586.014886][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2586.014893][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2586.014896][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2586.014900][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2586.014908][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2586.014912][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2586.014919][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2586.014921][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2586.014925][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2586.014929][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2586.014936][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2586.014941][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2586.014950][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2586.014958][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2586.014960][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2586.014963][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2586.014966][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2586.014969][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2586.014976][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2586.014980][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2586.014988][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2586.014992][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2586.014996][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2586.015002][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2586.015007][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2586.015013][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2586.015019][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2586.015025][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2586.015033][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2586.015037][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2586.015040][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2586.015043][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2586.015047][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2586.015055][ C2] ksys_write (fs/read_write.c:738) 
[ 2586.015058][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2586.015061][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2586.015069][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2586.015074][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2586.015078][    C2] RIP: 0033:0x7f471c970337
[ 2586.015084][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2586.015087][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2586.015090][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2586.015093][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2586.015094][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2586.015096][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2586.015098][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2612.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2612.512986][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2612.512994][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2612.513009][    C2] Tainted: [L]=SOFTLOCKUP
[ 2612.513010][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2612.513013][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2612.513019][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2612.513022][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2612.513025][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2612.513028][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2612.513030][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2612.513031][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2612.513033][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2612.513036][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2612.513039][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2612.513042][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2612.513044][    C2] PKRU: 55555554
[ 2612.513046][    C2] Call Trace:
[ 2612.513049][    C2]  <TASK>
[ 2612.513054][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2612.513061][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2612.513068][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2612.513071][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2612.513075][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2612.513081][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2612.513085][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2612.513092][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2612.513094][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2612.513097][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2612.513102][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2612.513108][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2612.513113][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2612.513122][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2612.513130][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2612.513132][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2612.513135][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2612.513138][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2612.513141][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2612.513148][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2612.513152][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2612.513160][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2612.513164][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2612.513168][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2612.513174][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2612.513179][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2612.513186][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2612.513191][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2612.513198][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2612.513206][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2612.513210][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2612.513213][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2612.513216][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2612.513220][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2612.513227][ C2] ksys_write (fs/read_write.c:738) 
[ 2612.513231][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2612.513234][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2612.513242][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2612.513247][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2612.513252][    C2] RIP: 0033:0x7f471c970337
[ 2612.513257][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2612.513260][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2612.513263][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2612.513265][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2612.513267][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2612.513269][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2612.513271][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2640.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2640.512988][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2640.512996][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2640.513011][    C2] Tainted: [L]=SOFTLOCKUP
[ 2640.513013][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2640.513015][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2640.513021][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2640.513024][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2640.513027][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2640.513029][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2640.513032][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2640.513033][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2640.513035][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2640.513038][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2640.513040][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2640.513044][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2640.513046][    C2] PKRU: 55555554
[ 2640.513048][    C2] Call Trace:
[ 2640.513051][    C2]  <TASK>
[ 2640.513055][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2640.513063][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2640.513070][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2640.513072][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2640.513077][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2640.513082][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2640.513087][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2640.513093][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2640.513096][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2640.513099][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2640.513104][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2640.513110][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2640.513116][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2640.513124][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2640.513132][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2640.513135][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2640.513138][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2640.513141][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2640.513144][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2640.513151][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2640.513154][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2640.513163][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2640.513166][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2640.513170][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2640.513178][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2640.513182][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2640.513189][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2640.513195][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2640.513202][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2640.513210][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2640.513214][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2640.513216][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2640.513220][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2640.513224][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2640.513232][ C2] ksys_write (fs/read_write.c:738) 
[ 2640.513236][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2640.513238][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2640.513246][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2640.513251][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2640.513255][    C2] RIP: 0033:0x7f471c970337
[ 2640.513261][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2640.513264][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2640.513267][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2640.513269][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2640.513271][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2640.513273][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2640.513275][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2640.532320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2640.532563][    C2] rcu: 2-....: (415690 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=103371
| [ 2640.533059][    C2] rcu: (t=416015 jiffies g=1286133 q=8351 ncpus=4)
| [ 2640.533296][    C2] Tainted: [L]=SOFTLOCKUP
[ 2640.533298][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2640.533300][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2640.533310][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2640.533313][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2640.533317][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2640.533319][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2640.533321][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2640.533323][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2640.533325][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2640.533326][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2640.533329][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2640.533333][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2640.533334][    C2] PKRU: 55555554
[ 2640.533335][    C2] Call Trace:
[ 2640.533337][    C2]  <TASK>
[ 2640.533339][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2640.533347][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2640.533351][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2640.533354][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2640.533358][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2640.533366][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2640.533369][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2640.533376][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2640.533378][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2640.533381][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2640.533386][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2640.533392][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2640.533397][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2640.533405][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2640.533412][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2640.533415][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2640.533418][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2640.533420][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2640.533423][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2640.533430][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2640.533433][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2640.533441][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2640.533445][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2640.533449][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2640.533455][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2640.533459][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2640.533464][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2640.533469][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2640.533475][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2640.533482][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2640.533485][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2640.533488][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2640.533491][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2640.533495][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2640.533502][ C2] ksys_write (fs/read_write.c:738) 
[ 2640.533505][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2640.533508][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2640.533515][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2640.533519][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2640.533522][    C2] RIP: 0033:0x7f471c970337
[ 2640.533526][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2640.533529][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2640.533532][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2640.533534][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2640.533536][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2640.533538][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2640.533540][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2668.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2668.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2668.512994][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2668.513010][    C2] Tainted: [L]=SOFTLOCKUP
[ 2668.513012][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2668.513015][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2668.513020][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2668.513024][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2668.513027][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2668.513029][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2668.513031][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2668.513034][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2668.513035][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2668.513037][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2668.513040][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2668.513044][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2668.513046][    C2] PKRU: 55555554
[ 2668.513047][    C2] Call Trace:
[ 2668.513051][    C2]  <TASK>
[ 2668.513055][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2668.513063][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2668.513070][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2668.513072][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2668.513077][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2668.513082][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2668.513086][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2668.513093][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2668.513095][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2668.513099][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2668.513103][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2668.513109][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2668.513115][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2668.513124][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2668.513132][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2668.513134][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2668.513137][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2668.513140][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2668.513143][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2668.513150][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2668.513154][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2668.513162][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2668.513166][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2668.513170][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2668.513177][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2668.513181][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2668.513188][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2668.513193][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2668.513200][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2668.513209][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2668.513212][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2668.513215][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2668.513219][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2668.513222][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2668.513230][ C2] ksys_write (fs/read_write.c:738) 
[ 2668.513233][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2668.513236][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2668.513244][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2668.513248][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2668.513253][    C2] RIP: 0033:0x7f471c970337
[ 2668.513259][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2668.513261][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2668.513265][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2668.513267][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2668.513269][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2668.513271][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2668.513273][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2684.318090][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2684.318285][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 2684.318593][    C2] NMI backtrace for cpu 2
| [ 2684.318613][    C2] Tainted: [L]=SOFTLOCKUP
[ 2684.318614][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2684.318616][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2684.318630][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2684.318633][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2684.318638][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2684.318640][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2684.318642][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2684.318644][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2684.318646][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2684.318648][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2684.318650][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2684.318654][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2684.318655][    C2] PKRU: 55555554
[ 2684.318657][    C2] Call Trace:
[ 2684.318659][    C2]  <TASK>
[ 2684.318663][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2684.318671][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2684.318677][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2684.318680][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2684.318686][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2684.318694][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2684.318698][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2684.318704][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2684.318707][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2684.318710][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2684.318715][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2684.318721][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2684.318726][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2684.318735][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2684.318742][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2684.318745][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2684.318748][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2684.318750][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2684.318753][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2684.318760][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2684.318764][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2684.318771][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2684.318775][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2684.318779][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2684.318785][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2684.318789][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2684.318796][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2684.318801][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2684.318808][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2684.318816][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2684.318820][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2684.318822][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2684.318826][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2684.318830][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2684.318837][ C2] ksys_write (fs/read_write.c:738) 
[ 2684.318840][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2684.318842][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2684.318850][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2684.318854][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2684.318859][    C2] RIP: 0033:0x7f471c970337
[ 2684.318865][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2684.318867][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2684.318871][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2684.318873][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2684.318874][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2684.318876][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2684.318878][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2684.318873][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
| [ 2684.318874][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
| [ 2684.318876][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
| [ 2684.318878][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2684.318884][    C2]  </TASK>
[ 2704.797412][   T44] INFO: task mptcp_connect:16951 blocked for more than 368 seconds.
[ 2704.797904][   T44]       Tainted: G             L      6.16.0-rc6-virtme #1
[ 2704.798266][   T44]       Blocked by coredump.
[ 2704.798729][   T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 2704.799151][   T44] task:mptcp_connect   state:D stack:26032 pid:16951 tgid:16951 ppid:16948  task_flags:0x40010c flags:0x00004002
[ 2704.799899][   T44] Call Trace:
[ 2704.800087][   T44]  <TASK>
[ 2704.800217][ T44] __schedule (kernel/sched/core.c:5397 kernel/sched/core.c:6786) 
[ 2704.800486][ T44] ? try_to_wake_up (kernel/sched/core.c:4014 kernel/sched/core.c:4343) 
[ 2704.800749][ T44] ? __pfx___schedule (kernel/sched/core.c:6663) 
[ 2704.801143][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2704.801407][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2704.801664][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2704.801918][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2704.802333][ T44] ? schedule (kernel/sched/core.c:6845 kernel/sched/core.c:6878) 
[ 2704.802526][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2704.802785][ T44] schedule (kernel/sched/core.c:6865 kernel/sched/core.c:6879) 
[ 2704.802978][ T44] synchronize_rcu_expedited (kernel/rcu/rcu.h:156 kernel/rcu/tree_exp.h:67 kernel/rcu/tree_exp.h:274 kernel/rcu/tree_exp.h:1013) 
[ 2704.803236][ T44] ? __pfx_synchronize_rcu_expedited (kernel/rcu/tree_exp.h:962) 
[ 2704.803558][ T44] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383) 
[ 2704.803872][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2704.804120][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2704.804424][ T44] ? __pfx_wait_rcu_exp_gp (kernel/rcu/tree_exp.h:488) 
[ 2704.804674][ T44] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2704.804927][ T44] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2704.805182][ T44] namespace_unlock (fs/namespace.c:1804) 
[ 2704.805589][ T44] ? umount_tree (./include/linux/list.h:1024 fs/namespace.c:1909) 
[ 2704.805843][ T44] ? __pfx_namespace_unlock (fs/namespace.c:1775) 
[ 2704.806093][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2704.806353][ T44] ? __pfx_umount_tree (fs/namespace.c:1857) 
[ 2704.806743][ T44] ? put_mnt_ns (fs/namespace.c:6282 fs/namespace.c:6274) 
[ 2704.806930][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2704.807179][ T44] put_mnt_ns (fs/namespace.c:6283 fs/namespace.c:6274) 
[ 2704.807386][ T44] free_nsproxy (kernel/nsproxy.c:189) 
[ 2704.807636][ T44] do_exit (./include/linux/task_work.h:40 kernel/exit.c:964) 
[ 2704.807972][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2704.808234][ T44] ? __pfx_do_exit (kernel/exit.c:897) 
[ 2704.808492][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2704.808740][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2704.809141][ T44] do_group_exit (kernel/exit.c:1086) 
[ 2704.809425][ T44] __x64_sys_exit_group (kernel/exit.c:1114) 
[ 2704.809596][ T44] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 2704.809767][ T44] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2704.810007][ T44] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2704.810216][   T44] RIP: 0033:0x7f1e66bbcadd
[ 2704.810392][   T44] RSP: 002b:00007ffe10f0a388 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 2704.810723][   T44] RAX: ffffffffffffffda RBX: 00007f1e66cd89c0 RCX: 00007f1e66bbcadd
[ 2704.810970][   T44] RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
[ 2704.811217][   T44] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000028
[ 2704.811557][   T44] R10: 00007ffe10f0a210 R11: 0000000000000246 R12: 00007f1e66cd89c0
[ 2704.811797][   T44] R13: 00007f1e66cddf20 R14: 0000000000000001 R15: 00007f1e66cddf08
| [ 2708.512984][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2708.512989][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2708.512997][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2708.513012][    C2] Tainted: [L]=SOFTLOCKUP
[ 2708.513013][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2708.513016][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:89 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 2708.513024][ C2] Code: 11 80 38 00 74 ef 4d 8d 1c 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea eb 09 <48> 83 c0 01 48 39 d0 74 a5 80 38 00 74 f2 e9 74 ff ff ff b8 01 00
All code
========
   0:	11 80 38 00 74 ef    	adc    %eax,-0x108bffc8(%rax)
   6:	4d 8d 1c 2c          	lea    (%r12,%rbp,1),%r11
   a:	48 89 c2             	mov    %rax,%rdx
   d:	48 85 c0             	test   %rax,%rax
  10:	75 b0                	jne    0xffffffffffffffc2
  12:	48 89 da             	mov    %rbx,%rdx
  15:	4c 89 d8             	mov    %r11,%rax
  18:	4c 29 da             	sub    %r11,%rdx
  1b:	e9 49 ff ff ff       	jmp    0xffffffffffffff69
  20:	48 85 d2             	test   %rdx,%rdx
  23:	74 b3                	je     0xffffffffffffffd8
  25:	48 01 ea             	add    %rbp,%rdx
  28:	eb 09                	jmp    0x33
  2a:*	48 83 c0 01          	add    $0x1,%rax		<-- trapping instruction
  2e:	48 39 d0             	cmp    %rdx,%rax
  31:	74 a5                	je     0xffffffffffffffd8
  33:	80 38 00             	cmpb   $0x0,(%rax)
  36:	74 f2                	je     0x2a
  38:	e9 74 ff ff ff       	jmp    0xffffffffffffffb1
  3d:	b8                   	.byte 0xb8
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	48 83 c0 01          	add    $0x1,%rax
   4:	48 39 d0             	cmp    %rdx,%rax
   7:	74 a5                	je     0xffffffffffffffae
   9:	80 38 00             	cmpb   $0x0,(%rax)
   c:	74 f2                	je     0x0
   e:	e9 74 ff ff ff       	jmp    0xffffffffffffff87
  13:	b8                   	.byte 0xb8
  14:	01 00                	add    %eax,(%rax)
[ 2708.513027][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000246
[ 2708.513031][    C2] RAX: ffffed100170bd66 RBX: ffffed100170bd67 RCX: ffffffffa2cd0f13
[ 2708.513033][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2708.513035][    C2] RBP: ffffed100170bd66 R08: 0000000000000000 R09: ffffed100170bd66
[ 2708.513037][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2708.513039][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2708.513041][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2708.513043][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2708.513047][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2708.513049][    C2] PKRU: 55555554
[ 2708.513050][    C2] Call Trace:
[ 2708.513054][    C2]  <TASK>
[ 2708.513058][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2708.513065][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2708.513072][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2708.513078][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2708.513081][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2708.513085][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2708.513090][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2708.513094][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2708.513101][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2708.513104][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2708.513106][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2708.513111][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2708.513118][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2708.513123][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2708.513132][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2708.513140][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2708.513142][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2708.513146][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2708.513148][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2708.513151][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2708.513159][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2708.513163][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2708.513170][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2708.513174][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2708.513178][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2708.513184][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2708.513188][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2708.513195][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2708.513200][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2708.513207][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2708.513214][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2708.513218][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2708.513220][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2708.513224][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2708.513228][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2708.513235][ C2] ksys_write (fs/read_write.c:738) 
[ 2708.513239][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2708.513242][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2708.513250][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2708.513254][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2708.513259][    C2] RIP: 0033:0x7f471c970337
[ 2708.513265][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2708.513267][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2708.513271][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2708.513273][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2708.513275][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2708.513277][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2708.513279][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2718.535322][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2718.535709][    C2] rcu: 2-....: (493630 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=122673
| [ 2718.536085][    C2] rcu: (t=494018 jiffies g=1286133 q=9968 ncpus=4)
| [ 2718.536481][    C2] Tainted: [L]=SOFTLOCKUP
[ 2718.536483][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2718.536485][ C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 2718.536497][ C2] Code: ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 <49> 01 c1 48 89 e8 49 8d 59 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	7f ff                	jg     0x3
   4:	ff 48 39             	decl   0x39(%rax)
   7:	c7                   	(bad)
   8:	76 dd                	jbe    0xffffffffffffffe7
   a:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df 
  1c:	4d 89 d1             	mov    %r10,%r9
  1f:	48 c1 ed 03          	shr    $0x3,%rbp
  23:	49 c1 e9 03          	shr    $0x3,%r9
  27:	48 01 c5             	add    %rax,%rbp
  2a:*	49 01 c1             	add    %rax,%r9		<-- trapping instruction
  2d:	48 89 e8             	mov    %rbp,%rax
  30:	49 8d 59 01          	lea    0x1(%r9),%rbx
  34:	48 89 da             	mov    %rbx,%rdx
  37:	48 29 ea             	sub    %rbp,%rdx
  3a:	48 83 fa 10          	cmp    $0x10,%rdx
  3e:	0f                   	.byte 0xf
  3f:	8e                   	.byte 0x8e

Code starting with the faulting instruction
===========================================
   0:	49 01 c1             	add    %rax,%r9
   3:	48 89 e8             	mov    %rbp,%rax
   6:	49 8d 59 01          	lea    0x1(%r9),%rbx
   a:	48 89 da             	mov    %rbx,%rdx
   d:	48 29 ea             	sub    %rbp,%rdx
  10:	48 83 fa 10          	cmp    $0x10,%rdx
  14:	0f                   	.byte 0xf
  15:	8e                   	.byte 0x8e
[ 2718.536500][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000286
[ 2718.536505][    C2] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2718.536507][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2718.536509][    C2] RBP: ffffed100170bd66 R08: 0000000000000000 R09: 1ffff1100170bd66
[ 2718.536510][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2718.536512][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2718.536514][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2718.536516][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2718.536521][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2718.536523][    C2] PKRU: 55555554
[ 2718.536524][    C2] Call Trace:
[ 2718.536525][    C2]  <TASK>
[ 2718.536528][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2718.536538][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2718.536545][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2718.536550][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2718.536553][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2718.536557][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2718.536566][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2718.536569][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2718.536576][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2718.536578][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2718.536581][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2718.536586][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2718.536592][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2718.536597][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2718.536606][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2718.536614][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2718.536616][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2718.536619][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2718.536622][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2718.536625][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2718.536632][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2718.536635][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2718.536642][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2718.536646][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2718.536650][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2718.536657][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2718.536661][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2718.536667][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2718.536672][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2718.536678][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2718.536685][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2718.536688][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2718.536691][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2718.536695][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2718.536698][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2718.536706][ C2] ksys_write (fs/read_write.c:738) 
[ 2718.536709][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2718.536712][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2718.536720][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2718.536724][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2718.536728][    C2] RIP: 0033:0x7f471c970337
[ 2718.536733][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2718.536735][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2718.536739][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2718.536741][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2718.536743][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2718.536744][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2718.536746][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2744.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2744.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2744.512994][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2744.513010][    C2] Tainted: [L]=SOFTLOCKUP
[ 2744.513011][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2744.513014][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2744.513020][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2744.513023][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2744.513027][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2744.513029][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2744.513031][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2744.513033][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2744.513035][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2744.513037][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2744.513040][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2744.513043][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2744.513046][    C2] PKRU: 55555554
[ 2744.513047][    C2] Call Trace:
[ 2744.513051][    C2]  <TASK>
[ 2744.513055][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2744.513063][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2744.513070][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2744.513073][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2744.513077][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2744.513082][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2744.513086][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2744.513093][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2744.513096][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2744.513099][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2744.513104][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2744.513110][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2744.513115][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2744.513124][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2744.513132][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2744.513135][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2744.513138][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2744.513141][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2744.513144][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2744.513151][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2744.513154][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2744.513162][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2744.513166][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2744.513170][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2744.513176][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2744.513180][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2744.513186][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2744.513192][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2744.513199][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2744.513206][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2744.513211][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2744.513213][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2744.513217][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2744.513221][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2744.513228][ C2] ksys_write (fs/read_write.c:738) 
[ 2744.513232][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2744.513234][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2744.513242][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2744.513247][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2744.513251][    C2] RIP: 0033:0x7f471c970337
[ 2744.513257][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2744.513260][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2744.513263][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2744.513265][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2744.513267][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2744.513269][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2744.513271][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2772.512980][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2772.512985][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2772.512992][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2772.513009][    C2] Tainted: [L]=SOFTLOCKUP
[ 2772.513011][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2772.513014][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2772.513019][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2772.513022][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2772.513026][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2772.513028][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2772.513030][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2772.513032][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2772.513034][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2772.513036][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2772.513039][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2772.513042][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2772.513045][    C2] PKRU: 55555554
[ 2772.513046][    C2] Call Trace:
[ 2772.513050][    C2]  <TASK>
[ 2772.513054][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2772.513062][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2772.513068][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2772.513071][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2772.513075][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2772.513080][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2772.513085][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2772.513092][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2772.513095][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2772.513098][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2772.513103][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2772.513109][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2772.513114][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2772.513122][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2772.513130][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2772.513133][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2772.513136][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2772.513139][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2772.513142][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2772.513149][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2772.513152][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2772.513161][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2772.513164][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2772.513168][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2772.513175][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2772.513179][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2772.513185][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2772.513191][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2772.513198][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2772.513206][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2772.513210][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2772.513213][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2772.513217][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2772.513221][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2772.513228][ C2] ksys_write (fs/read_write.c:738) 
[ 2772.513231][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2772.513234][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2772.513242][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2772.513247][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2772.513251][    C2] RIP: 0033:0x7f471c970337
[ 2772.513257][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2772.513259][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2772.513262][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2772.513264][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2772.513266][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2772.513268][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2772.513270][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2782.622786][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2782.623056][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 2782.623241][    C2] NMI backtrace for cpu 2
| [ 2782.623263][    C2] Tainted: [L]=SOFTLOCKUP
[ 2782.623264][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2782.623267][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2782.623280][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2782.623282][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2782.623288][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2782.623290][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2782.623292][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2782.623294][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2782.623296][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2782.623298][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2782.623300][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2782.623304][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2782.623306][    C2] PKRU: 55555554
[ 2782.623307][    C2] Call Trace:
[ 2782.623311][    C2]  <TASK>
[ 2782.623316][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2782.623324][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2782.623330][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2782.623333][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2782.623337][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2782.623346][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2782.623350][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2782.623356][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2782.623359][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2782.623361][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2782.623367][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2782.623373][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2782.623378][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2782.623387][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2782.623395][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2782.623397][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2782.623400][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2782.623403][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2782.623406][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2782.623413][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2782.623416][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2782.623424][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2782.623428][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2782.623432][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2782.623439][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2782.623443][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2782.623450][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2782.623455][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2782.623462][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2782.623470][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2782.623474][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2782.623476][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2782.623481][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2782.623485][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2782.623492][ C2] ksys_write (fs/read_write.c:738) 
[ 2782.623495][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2782.623498][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2782.623506][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2782.623510][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2782.623514][    C2] RIP: 0033:0x7f471c970337
[ 2782.623521][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2782.623523][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2782.623526][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2782.623528][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2782.623530][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2782.623532][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2782.623534][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2796.538323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2796.538646][    C2] rcu: 2-....: (571569 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=141859
| [ 2796.539140][    C2] rcu: (t=572021 jiffies g=1286133 q=11367 ncpus=4)
| [ 2796.539407][    C2] Tainted: [L]=SOFTLOCKUP
[ 2796.539409][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2796.539411][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2796.539423][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2796.539427][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2796.539431][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2796.539433][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2796.539435][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2796.539437][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2796.539439][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2796.539441][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2796.539443][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2796.539447][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2796.539449][    C2] PKRU: 55555554
[ 2796.539450][    C2] Call Trace:
[ 2796.539452][    C2]  <TASK>
[ 2796.539454][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2796.539462][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2796.539468][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2796.539471][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2796.539476][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2796.539484][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2796.539488][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2796.539494][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2796.539497][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2796.539499][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2796.539504][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2796.539510][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2796.539515][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2796.539524][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2796.539532][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2796.539535][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2796.539538][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2796.539541][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2796.539543][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2796.539550][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2796.539554][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2796.539561][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2796.539565][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2796.539569][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2796.539575][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2796.539580][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2796.539586][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2796.539590][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2796.539597][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2796.539605][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2796.539608][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2796.539610][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2796.539615][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2796.539618][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2796.539626][ C2] ksys_write (fs/read_write.c:738) 
[ 2796.539629][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2796.539632][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2796.539640][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2796.539644][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2796.539648][    C2] RIP: 0033:0x7f471c970337
[ 2796.539654][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2796.539656][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2796.539660][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2796.539661][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2796.539663][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2796.539665][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2796.539667][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2824.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2824.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2824.512995][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2824.513010][    C2] Tainted: [L]=SOFTLOCKUP
[ 2824.513012][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2824.513015][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2824.513020][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 2824.513023][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2824.513027][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2824.513029][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2824.513031][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2824.513033][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2824.513035][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2824.513037][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2824.513040][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2824.513044][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2824.513046][    C2] PKRU: 55555554
[ 2824.513047][    C2] Call Trace:
[ 2824.513052][    C2]  <TASK>
[ 2824.513056][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2824.513064][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2824.513070][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2824.513073][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2824.513078][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2824.513083][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2824.513087][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2824.513094][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2824.513097][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2824.513100][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2824.513105][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2824.513110][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2824.513116][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2824.513125][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2824.513133][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2824.513136][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2824.513139][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2824.513142][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2824.513144][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2824.513152][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2824.513156][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2824.513163][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2824.513167][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2824.513170][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2824.513177][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2824.513181][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2824.513187][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2824.513192][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2824.513199][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2824.513207][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2824.513211][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2824.513213][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2824.513218][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2824.513221][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2824.513229][ C2] ksys_write (fs/read_write.c:738) 
[ 2824.513232][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2824.513235][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2824.513243][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2824.513247][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2824.513252][    C2] RIP: 0033:0x7f471c970337
[ 2824.513257][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2824.513260][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2824.513263][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2824.513265][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2824.513267][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2824.513269][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2824.513271][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2824.513265][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
| [ 2824.513267][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
| [ 2824.513269][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
| [ 2824.513271][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2824.513277][    C2]  </TASK>
[ 2827.678372][   T44] INFO: task mptcp_connect:16951 blocked for more than 491 seconds.
[ 2827.678761][   T44]       Tainted: G             L      6.16.0-rc6-virtme #1
[ 2827.679072][   T44]       Blocked by coredump.
[ 2827.679221][   T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 2827.679491][   T44] task:mptcp_connect   state:D stack:26032 pid:16951 tgid:16951 ppid:16948  task_flags:0x40010c flags:0x00004002
[ 2827.679943][   T44] Call Trace:
[ 2827.680070][   T44]  <TASK>
[ 2827.680154][ T44] __schedule (kernel/sched/core.c:5397 kernel/sched/core.c:6786) 
[ 2827.680422][ T44] ? try_to_wake_up (kernel/sched/core.c:4014 kernel/sched/core.c:4343) 
[ 2827.680608][ T44] ? __pfx___schedule (kernel/sched/core.c:6663) 
[ 2827.680772][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2827.680936][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2827.681180][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2827.681377][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2827.681537][ T44] ? schedule (kernel/sched/core.c:6845 kernel/sched/core.c:6878) 
[ 2827.681657][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2827.681817][ T44] schedule (kernel/sched/core.c:6865 kernel/sched/core.c:6879) 
[ 2827.682023][ T44] synchronize_rcu_expedited (kernel/rcu/rcu.h:156 kernel/rcu/tree_exp.h:67 kernel/rcu/tree_exp.h:274 kernel/rcu/tree_exp.h:1013) 
[ 2827.682191][ T44] ? __pfx_synchronize_rcu_expedited (kernel/rcu/tree_exp.h:962) 
[ 2827.682397][ T44] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383) 
[ 2827.682695][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2827.682854][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2827.683011][ T44] ? __pfx_wait_rcu_exp_gp (kernel/rcu/tree_exp.h:488) 
[ 2827.683168][ T44] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2827.683337][ T44] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2827.683498][ T44] namespace_unlock (fs/namespace.c:1804) 
[ 2827.683657][ T44] ? umount_tree (./include/linux/list.h:1024 fs/namespace.c:1909) 
[ 2827.683821][ T44] ? __pfx_namespace_unlock (fs/namespace.c:1775) 
[ 2827.684058][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2827.684216][ T44] ? __pfx_umount_tree (fs/namespace.c:1857) 
[ 2827.684378][ T44] ? put_mnt_ns (fs/namespace.c:6282 fs/namespace.c:6274) 
[ 2827.684504][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2827.684663][ T44] put_mnt_ns (fs/namespace.c:6283 fs/namespace.c:6274) 
[ 2827.684863][ T44] free_nsproxy (kernel/nsproxy.c:189) 
[ 2827.685024][ T44] do_exit (./include/linux/task_work.h:40 kernel/exit.c:964) 
[ 2827.685155][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2827.685312][ T44] ? __pfx_do_exit (kernel/exit.c:897) 
[ 2827.685559][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2827.685736][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2827.685932][ T44] do_group_exit (kernel/exit.c:1086) 
[ 2827.686106][ T44] __x64_sys_exit_group (kernel/exit.c:1114) 
[ 2827.686386][ T44] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 2827.686549][ T44] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2827.686715][ T44] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2827.686916][   T44] RIP: 0033:0x7f1e66bbcadd
[ 2827.687162][   T44] RSP: 002b:00007ffe10f0a388 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 2827.687409][   T44] RAX: ffffffffffffffda RBX: 00007f1e66cd89c0 RCX: 00007f1e66bbcadd
[ 2827.687648][   T44] RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
[ 2827.687976][   T44] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000028
[ 2827.688213][   T44] R10: 00007ffe10f0a210 R11: 0000000000000246 R12: 00007f1e66cd89c0
[ 2827.688535][   T44] R13: 00007f1e66cddf20 R14: 0000000000000001 R15: 00007f1e66cddf08
| [ 2852.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2852.512988][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2852.512995][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2852.513012][    C2] Tainted: [L]=SOFTLOCKUP
[ 2852.513013][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2852.513016][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2852.513021][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2852.513025][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2852.513028][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2852.513030][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2852.513032][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2852.513034][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2852.513036][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2852.513038][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2852.513040][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2852.513044][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2852.513046][    C2] PKRU: 55555554
[ 2852.513047][    C2] Call Trace:
[ 2852.513052][    C2]  <TASK>
[ 2852.513056][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2852.513063][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2852.513070][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2852.513073][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2852.513077][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2852.513082][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2852.513087][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2852.513093][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2852.513096][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2852.513099][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2852.513104][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2852.513110][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2852.513115][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2852.513124][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2852.513132][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2852.513135][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2852.513138][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2852.513140][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2852.513143][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2852.513150][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2852.513154][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2852.513162][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2852.513165][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2852.513169][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2852.513176][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2852.513181][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2852.513187][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2852.513193][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2852.513199][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2852.513207][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2852.513211][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2852.513214][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2852.513217][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2852.513221][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2852.513228][ C2] ksys_write (fs/read_write.c:738) 
[ 2852.513232][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2852.513234][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2852.513242][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2852.513247][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2852.513252][    C2] RIP: 0033:0x7f471c970337
[ 2852.513257][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2852.513260][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2852.513263][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2852.513265][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2852.513267][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2852.513269][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2852.513271][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2874.541323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2874.541729][    C2] rcu: 2-....: (649523 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=160910
| [ 2874.542118][    C2] rcu: (t=650024 jiffies g=1286133 q=12647 ncpus=4)
| [ 2874.542483][    C2] Tainted: [L]=SOFTLOCKUP
[ 2874.542484][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2874.542487][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2874.542500][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2874.542503][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2874.542507][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2874.542509][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2874.542512][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2874.542513][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2874.542515][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2874.542517][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2874.542520][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2874.542523][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2874.542525][    C2] PKRU: 55555554
[ 2874.542527][    C2] Call Trace:
[ 2874.542528][    C2]  <TASK>
[ 2874.542530][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2874.542538][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2874.542545][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2874.542548][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2874.542553][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2874.542561][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2874.542565][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2874.542571][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2874.542574][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2874.542577][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2874.542581][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2874.542587][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2874.542592][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2874.542600][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2874.542608][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2874.542611][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2874.542614][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2874.542616][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2874.542619][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2874.542626][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2874.542630][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2874.542637][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2874.542641][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2874.542645][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2874.542651][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2874.542654][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2874.542659][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2874.542664][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2874.542670][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2874.542678][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2874.542681][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2874.542684][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2874.542688][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2874.542691][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2874.542698][ C2] ksys_write (fs/read_write.c:738) 
[ 2874.542702][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2874.542704][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2874.542712][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2874.542716][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2874.542720][    C2] RIP: 0033:0x7f471c970337
[ 2874.542726][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2874.542728][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2874.542731][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2874.542734][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2874.542736][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2874.542737][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2874.542739][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2880.925959][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2880.926152][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 2880.926341][    C2] NMI backtrace for cpu 2
| [ 2880.926363][    C2] Tainted: [L]=SOFTLOCKUP
[ 2880.926364][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2880.926367][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 2880.926379][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 2880.926382][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 2880.926386][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2880.926389][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2880.926391][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2880.926393][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2880.926395][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2880.926396][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2880.926399][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2880.926403][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2880.926405][    C2] PKRU: 55555554
[ 2880.926406][    C2] Call Trace:
[ 2880.926409][    C2]  <TASK>
[ 2880.926411][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2880.926423][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2880.926430][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2880.926435][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2880.926437][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2880.926442][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2880.926451][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2880.926455][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2880.926462][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2880.926465][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2880.926467][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2880.926473][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2880.926479][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2880.926484][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2880.926492][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2880.926500][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2880.926502][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2880.926505][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2880.926508][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2880.926511][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2880.926518][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2880.926522][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2880.926529][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2880.926533][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2880.926537][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2880.926544][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2880.926548][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2880.926554][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2880.926560][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2880.926566][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2880.926573][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2880.926576][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2880.926579][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2880.926583][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2880.926586][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2880.926593][ C2] ksys_write (fs/read_write.c:738) 
[ 2880.926597][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2880.926599][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2880.926607][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2880.926612][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2880.926617][    C2] RIP: 0033:0x7f471c970337
[ 2880.926623][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2880.926625][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2880.926628][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2880.926630][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2880.926632][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2880.926634][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2880.926636][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2908.512981][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2908.512985][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2908.512992][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2908.513008][    C2] Tainted: [L]=SOFTLOCKUP
[ 2908.513010][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2908.513012][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2908.513017][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2908.513021][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2908.513024][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2908.513026][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2908.513028][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2908.513030][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2908.513032][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2908.513034][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2908.513037][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2908.513041][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2908.513043][    C2] PKRU: 55555554
[ 2908.513044][    C2] Call Trace:
[ 2908.513048][    C2]  <TASK>
[ 2908.513053][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2908.513061][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2908.513067][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2908.513069][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2908.513074][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2908.513079][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2908.513084][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2908.513091][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2908.513094][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2908.513096][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2908.513101][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2908.513108][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2908.513113][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2908.513122][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2908.513130][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2908.513132][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2908.513136][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2908.513138][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2908.513141][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2908.513148][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2908.513152][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2908.513161][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2908.513164][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2908.513168][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2908.513175][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2908.513179][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2908.513186][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2908.513191][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2908.513197][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2908.513205][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2908.513209][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2908.513212][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2908.513215][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2908.513219][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2908.513227][ C2] ksys_write (fs/read_write.c:738) 
[ 2908.513231][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2908.513233][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2908.513241][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2908.513246][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2908.513250][    C2] RIP: 0033:0x7f471c970337
[ 2908.513255][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2908.513258][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2908.513261][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2908.513263][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2908.513265][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2908.513266][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2908.513268][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2936.512984][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 2936.512989][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 2936.512997][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 2936.513012][    C2] Tainted: [L]=SOFTLOCKUP
[ 2936.513013][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2936.513015][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2936.513021][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2936.513023][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2936.513027][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2936.513029][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2936.513031][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2936.513032][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2936.513034][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2936.513036][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2936.513039][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2936.513042][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2936.513044][    C2] PKRU: 55555554
[ 2936.513046][    C2] Call Trace:
[ 2936.513049][    C2]  <TASK>
[ 2936.513053][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2936.513061][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2936.513068][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2936.513071][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2936.513075][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2936.513081][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2936.513085][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2936.513092][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2936.513095][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2936.513098][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2936.513103][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2936.513109][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2936.513114][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2936.513123][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2936.513131][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2936.513133][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2936.513137][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2936.513139][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2936.513142][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2936.513150][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2936.513153][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2936.513162][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2936.513165][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2936.513169][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2936.513176][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2936.513180][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2936.513187][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2936.513193][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2936.513200][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2936.513208][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2936.513212][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2936.513214][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2936.513219][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2936.513223][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2936.513230][ C2] ksys_write (fs/read_write.c:738) 
[ 2936.513234][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2936.513236][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2936.513245][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2936.513249][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2936.513253][    C2] RIP: 0033:0x7f471c970337
[ 2936.513260][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2936.513262][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2936.513265][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2936.513267][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2936.513269][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2936.513271][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2936.513273][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2936.513267][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
| [ 2936.513269][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
| [ 2936.513271][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
| [ 2936.513273][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2936.513279][    C2]  </TASK>
[ 2950.557379][   T44] INFO: task mptcp_connect:16951 blocked for more than 614 seconds.
[ 2950.557765][   T44]       Tainted: G             L      6.16.0-rc6-virtme #1
[ 2950.558004][   T44]       Blocked by coredump.
[ 2950.558157][   T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 2950.558518][   T44] task:mptcp_connect   state:D stack:26032 pid:16951 tgid:16951 ppid:16948  task_flags:0x40010c flags:0x00004002
[ 2950.558894][   T44] Call Trace:
[ 2950.559092][   T44]  <TASK>
[ 2950.559175][ T44] __schedule (kernel/sched/core.c:5397 kernel/sched/core.c:6786) 
[ 2950.559355][ T44] ? try_to_wake_up (kernel/sched/core.c:4014 kernel/sched/core.c:4343) 
[ 2950.559518][ T44] ? __pfx___schedule (kernel/sched/core.c:6663) 
[ 2950.559765][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2950.559931][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2950.560088][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2950.560252][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2950.560536][ T44] ? schedule (kernel/sched/core.c:6845 kernel/sched/core.c:6878) 
[ 2950.560657][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2950.560815][ T44] schedule (kernel/sched/core.c:6865 kernel/sched/core.c:6879) 
[ 2950.560939][ T44] synchronize_rcu_expedited (kernel/rcu/rcu.h:156 kernel/rcu/tree_exp.h:67 kernel/rcu/tree_exp.h:274 kernel/rcu/tree_exp.h:1013) 
[ 2950.561103][ T44] ? __pfx_synchronize_rcu_expedited (kernel/rcu/tree_exp.h:962) 
[ 2950.561417][ T44] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383) 
[ 2950.561618][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2950.561783][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2950.562020][ T44] ? __pfx_wait_rcu_exp_gp (kernel/rcu/tree_exp.h:488) 
[ 2950.562178][ T44] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2950.562350][ T44] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2950.562511][ T44] namespace_unlock (fs/namespace.c:1804) 
[ 2950.562752][ T44] ? umount_tree (./include/linux/list.h:1024 fs/namespace.c:1909) 
[ 2950.562911][ T44] ? __pfx_namespace_unlock (fs/namespace.c:1775) 
[ 2950.563068][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2950.563232][ T44] ? __pfx_umount_tree (fs/namespace.c:1857) 
[ 2950.563479][ T44] ? put_mnt_ns (fs/namespace.c:6282 fs/namespace.c:6274) 
[ 2950.563610][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2950.563768][ T44] put_mnt_ns (fs/namespace.c:6283 fs/namespace.c:6274) 
[ 2950.563889][ T44] free_nsproxy (kernel/nsproxy.c:189) 
[ 2950.564053][ T44] do_exit (./include/linux/task_work.h:40 kernel/exit.c:964) 
[ 2950.564253][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2950.564418][ T44] ? __pfx_do_exit (kernel/exit.c:897) 
[ 2950.564582][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2950.564746][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2950.564997][ T44] do_group_exit (kernel/exit.c:1086) 
[ 2950.565155][ T44] __x64_sys_exit_group (kernel/exit.c:1114) 
[ 2950.565313][ T44] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 2950.565483][ T44] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2950.565720][ T44] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2950.565927][   T44] RIP: 0033:0x7f1e66bbcadd
[ 2950.566098][   T44] RSP: 002b:00007ffe10f0a388 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 2950.566370][   T44] RAX: ffffffffffffffda RBX: 00007f1e66cd89c0 RCX: 00007f1e66bbcadd
[ 2950.566609][   T44] RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
[ 2950.566849][   T44] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000028
[ 2950.567190][   T44] R10: 00007ffe10f0a210 R11: 0000000000000246 R12: 00007f1e66cd89c0
[ 2950.567436][   T44] R13: 00007f1e66cddf20 R14: 0000000000000001 R15: 00007f1e66cddf08
| [ 2952.544323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2952.544726][    C2] rcu: 2-....: (727462 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=180089
| [ 2952.545236][    C2] rcu: (t=728027 jiffies g=1286133 q=14261 ncpus=4)
| [ 2952.545479][    C2] Tainted: [L]=SOFTLOCKUP
[ 2952.545481][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2952.545483][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2952.545496][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 2952.545500][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2952.545504][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2952.545506][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2952.545508][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2952.545510][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2952.545511][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2952.545514][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2952.545516][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2952.545521][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2952.545523][    C2] PKRU: 55555554
[ 2952.545524][    C2] Call Trace:
[ 2952.545526][    C2]  <TASK>
[ 2952.545528][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2952.545536][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2952.545542][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2952.545545][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2952.545550][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2952.545558][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2952.545562][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2952.545568][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2952.545571][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2952.545573][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2952.545578][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2952.545584][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2952.545590][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2952.545599][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2952.545606][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2952.545609][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2952.545612][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2952.545615][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2952.545617][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2952.545624][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2952.545628][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2952.545635][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2952.545639][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2952.545642][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2952.545649][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2952.545653][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2952.545659][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2952.545664][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2952.545670][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2952.545678][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2952.545681][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2952.545684][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2952.545687][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2952.545691][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2952.545698][ C2] ksys_write (fs/read_write.c:738) 
[ 2952.545702][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2952.545705][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2952.545713][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2952.545717][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2952.545721][    C2] RIP: 0033:0x7f471c970337
[ 2952.545727][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2952.545729][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2952.545732][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2952.545734][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2952.545736][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2952.545738][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2952.545740][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 2979.229884][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2979.230172][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 2979.230353][    C2] NMI backtrace for cpu 2
| [ 2979.230373][    C2] Tainted: [L]=SOFTLOCKUP
[ 2979.230375][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2979.230377][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2979.230390][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2979.230393][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 2979.230397][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 2979.230399][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 2979.230402][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 2979.230404][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 2979.230406][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 2979.230408][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 2979.230410][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2979.230414][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 2979.230416][    C2] PKRU: 55555554
[ 2979.230417][    C2] Call Trace:
[ 2979.230420][    C2]  <TASK>
[ 2979.230425][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2979.230432][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2979.230438][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2979.230441][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2979.230446][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2979.230454][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 2979.230458][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 2979.230464][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2979.230467][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 2979.230470][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 2979.230475][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 2979.230481][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 2979.230486][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 2979.230495][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 2979.230503][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2979.230506][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 2979.230509][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2979.230512][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2979.230515][ C2] ? release_sock (net/core/sock.c:3747) 
[ 2979.230521][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 2979.230526][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2979.230533][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 2979.230537][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 2979.230542][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 2979.230548][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 2979.230553][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 2979.230559][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 2979.230564][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 2979.230571][ C2] ? ksys_write (fs/read_write.c:738) 
[ 2979.230578][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 2979.230582][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 2979.230585][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 2979.230589][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 2979.230593][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 2979.230600][ C2] ksys_write (fs/read_write.c:738) 
[ 2979.230603][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 2979.230606][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2979.230614][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2979.230618][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2979.230622][    C2] RIP: 0033:0x7f471c970337
[ 2979.230628][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2979.230631][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2979.230634][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 2979.230636][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 2979.230638][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 2979.230640][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 2979.230642][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3004.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3004.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3004.512995][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3004.513011][    C2] Tainted: [L]=SOFTLOCKUP
[ 3004.513012][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3004.513015][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3004.513021][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3004.513024][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3004.513027][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3004.513029][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3004.513031][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3004.513033][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3004.513035][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3004.513037][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3004.513040][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3004.513044][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3004.513046][    C2] PKRU: 55555554
[ 3004.513047][    C2] Call Trace:
[ 3004.513050][    C2]  <TASK>
[ 3004.513055][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3004.513063][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3004.513069][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3004.513072][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3004.513077][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3004.513082][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3004.513086][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3004.513093][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3004.513095][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3004.513098][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3004.513103][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3004.513109][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3004.513114][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3004.513122][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3004.513130][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3004.513133][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3004.513136][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3004.513138][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3004.513141][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3004.513148][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3004.513152][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3004.513160][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3004.513164][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3004.513168][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3004.513175][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3004.513179][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3004.513185][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3004.513191][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3004.513198][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3004.513205][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3004.513209][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3004.513211][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3004.513215][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3004.513219][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3004.513226][ C2] ksys_write (fs/read_write.c:738) 
[ 3004.513230][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3004.513232][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3004.513241][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3004.513245][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3004.513250][    C2] RIP: 0033:0x7f471c970337
[ 3004.513256][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3004.513258][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3004.513262][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3004.513264][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3004.513266][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3004.513268][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3004.513270][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3030.547322][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3030.547717][    C2] rcu: 2-....: (805419 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=199366
| [ 3030.548113][    C2] rcu: (t=806030 jiffies g=1286133 q=15281 ncpus=4)
| [ 3030.548484][    C2] Tainted: [L]=SOFTLOCKUP
[ 3030.548485][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3030.548488][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3030.548500][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3030.548504][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3030.548508][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3030.548510][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3030.548512][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3030.548514][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3030.548516][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3030.548518][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3030.548520][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3030.548524][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3030.548526][    C2] PKRU: 55555554
[ 3030.548527][    C2] Call Trace:
[ 3030.548529][    C2]  <TASK>
[ 3030.548531][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3030.548539][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3030.548545][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3030.548547][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3030.548552][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3030.548560][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3030.548564][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3030.548570][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3030.548573][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3030.548575][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3030.548580][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3030.548586][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3030.548592][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3030.548601][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3030.548609][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3030.548612][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3030.548615][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3030.548617][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3030.548621][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3030.548628][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3030.548632][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3030.548639][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3030.548643][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3030.548647][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3030.548653][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3030.548657][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3030.548663][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3030.548668][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3030.548675][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3030.548682][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3030.548686][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3030.548688][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3030.548691][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3030.548695][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3030.548702][ C2] ksys_write (fs/read_write.c:738) 
[ 3030.548706][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3030.548708][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3030.548716][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3030.548721][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3030.548725][    C2] RIP: 0033:0x7f471c970337
[ 3030.548731][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3030.548733][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3030.548736][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3030.548738][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3030.548740][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3030.548742][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3030.548744][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3056.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3056.512986][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3056.512993][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3056.513009][    C2] Tainted: [L]=SOFTLOCKUP
[ 3056.513010][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3056.513013][ C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:64 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3056.513023][ C2] Code: 5b 5d 41 5c e9 0b fb 1a 02 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df <4d> 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d
All code
========
   0:	5b                   	pop    %rbx
   1:	5d                   	pop    %rbp
   2:	41 5c                	pop    %r12
   4:	e9 0b fb 1a 02       	jmp    0x21afb14
   9:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  10:	7f ff ff 
  13:	48 39 c7             	cmp    %rax,%rdi
  16:	76 dd                	jbe    0xfffffffffffffff5
  18:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  1d:	48 89 fd             	mov    %rdi,%rbp
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df 
  2a:*	4d 89 d1             	mov    %r10,%r9		<-- trapping instruction
  2d:	48 c1 ed 03          	shr    $0x3,%rbp
  31:	49 c1 e9 03          	shr    $0x3,%r9
  35:	48 01 c5             	add    %rax,%rbp
  38:	49 01 c1             	add    %rax,%r9
  3b:	48 89 e8             	mov    %rbp,%rax
  3e:	49                   	rex.WB
  3f:	8d                   	.byte 0x8d

Code starting with the faulting instruction
===========================================
   0:	4d 89 d1             	mov    %r10,%r9
   3:	48 c1 ed 03          	shr    $0x3,%rbp
   7:	49 c1 e9 03          	shr    $0x3,%r9
   b:	48 01 c5             	add    %rax,%rbp
   e:	49 01 c1             	add    %rax,%r9
  11:	48 89 e8             	mov    %rbp,%rax
  14:	49                   	rex.WB
  15:	8d                   	.byte 0x8d
[ 3056.513026][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000212
[ 3056.513030][    C2] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3056.513032][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3056.513034][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3056.513036][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3056.513038][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3056.513040][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3056.513043][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3056.513047][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3056.513049][    C2] PKRU: 55555554
[ 3056.513050][    C2] Call Trace:
[ 3056.513054][    C2]  <TASK>
[ 3056.513058][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3056.513064][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3056.513071][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3056.513077][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3056.513080][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3056.513084][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3056.513089][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3056.513094][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3056.513100][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3056.513103][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3056.513106][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3056.513111][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3056.513117][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3056.513122][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3056.513131][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3056.513138][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3056.513141][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3056.513144][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3056.513147][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3056.513149][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3056.513156][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3056.513160][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3056.513168][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3056.513171][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3056.513175][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3056.513182][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3056.513186][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3056.513193][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3056.513198][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3056.513205][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3056.513211][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3056.513215][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3056.513218][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3056.513222][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3056.513226][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3056.513233][ C2] ksys_write (fs/read_write.c:738) 
[ 3056.513236][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3056.513239][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3056.513247][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3056.513252][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3056.513257][    C2] RIP: 0033:0x7f471c970337
[ 3056.513263][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3056.513265][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3056.513269][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3056.513271][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3056.513273][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3056.513275][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3056.513277][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3056.513271][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
| [ 3056.513273][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
| [ 3056.513275][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
| [ 3056.513277][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3056.513283][    C2]  </TASK>
[ 3073.437380][   T44] INFO: task mptcp_connect:16951 blocked for more than 737 seconds.
[ 3073.437792][   T44]       Tainted: G             L      6.16.0-rc6-virtme #1
[ 3073.438102][   T44]       Blocked by coredump.
[ 3073.438260][   T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 3073.438535][   T44] task:mptcp_connect   state:D stack:26032 pid:16951 tgid:16951 ppid:16948  task_flags:0x40010c flags:0x00004002
[ 3073.438994][   T44] Call Trace:
[ 3073.439115][   T44]  <TASK>
[ 3073.439199][ T44] __schedule (kernel/sched/core.c:5397 kernel/sched/core.c:6786) 
[ 3073.439479][ T44] ? try_to_wake_up (kernel/sched/core.c:4014 kernel/sched/core.c:4343) 
[ 3073.439653][ T44] ? __pfx___schedule (kernel/sched/core.c:6663) 
[ 3073.439815][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3073.439976][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3073.440219][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3073.440421][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3073.440581][ T44] ? schedule (kernel/sched/core.c:6845 kernel/sched/core.c:6878) 
[ 3073.440716][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3073.440879][ T44] schedule (kernel/sched/core.c:6865 kernel/sched/core.c:6879) 
[ 3073.441095][ T44] synchronize_rcu_expedited (kernel/rcu/rcu.h:156 kernel/rcu/tree_exp.h:67 kernel/rcu/tree_exp.h:274 kernel/rcu/tree_exp.h:1013) 
[ 3073.441266][ T44] ? __pfx_synchronize_rcu_expedited (kernel/rcu/tree_exp.h:962) 
[ 3073.441488][ T44] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383) 
[ 3073.441782][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3073.441940][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3073.442114][ T44] ? __pfx_wait_rcu_exp_gp (kernel/rcu/tree_exp.h:488) 
[ 3073.442273][ T44] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3073.442539][ T44] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3073.442701][ T44] namespace_unlock (fs/namespace.c:1804) 
[ 3073.442865][ T44] ? umount_tree (./include/linux/list.h:1024 fs/namespace.c:1909) 
[ 3073.443025][ T44] ? __pfx_namespace_unlock (fs/namespace.c:1775) 
[ 3073.443262][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3073.443443][ T44] ? __pfx_umount_tree (fs/namespace.c:1857) 
[ 3073.443601][ T44] ? put_mnt_ns (fs/namespace.c:6282 fs/namespace.c:6274) 
[ 3073.443722][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3073.443893][ T44] put_mnt_ns (fs/namespace.c:6283 fs/namespace.c:6274) 
[ 3073.444092][ T44] free_nsproxy (kernel/nsproxy.c:189) 
[ 3073.444253][ T44] do_exit (./include/linux/task_work.h:40 kernel/exit.c:964) 
[ 3073.444384][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3073.444549][ T44] ? __pfx_do_exit (kernel/exit.c:897) 
[ 3073.444787][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3073.444946][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3073.445114][ T44] do_group_exit (kernel/exit.c:1086) 
[ 3073.445292][ T44] __x64_sys_exit_group (kernel/exit.c:1114) 
[ 3073.445558][ T44] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 3073.445721][ T44] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3073.445883][ T44] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3073.446080][   T44] RIP: 0033:0x7f1e66bbcadd
[ 3073.446349][   T44] RSP: 002b:00007ffe10f0a388 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 3073.446594][   T44] RAX: ffffffffffffffda RBX: 00007f1e66cd89c0 RCX: 00007f1e66bbcadd
[ 3073.446839][   T44] RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
[ 3073.447162][   T44] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000028
[ 3073.447410][   T44] R10: 00007ffe10f0a210 R11: 0000000000000246 R12: 00007f1e66cd89c0
[ 3073.447734][   T44] R13: 00007f1e66cddf20 R14: 0000000000000001 R15: 00007f1e66cddf08
| [ 3077.533899][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3077.534123][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 3077.534322][    C2] NMI backtrace for cpu 2
| [ 3077.534344][    C2] Tainted: [L]=SOFTLOCKUP
[ 3077.534345][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3077.534348][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 3077.534366][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 3077.534369][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 3077.534374][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 3077.534376][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 3077.534379][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 3077.534381][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 3077.534383][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 3077.534384][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3077.534387][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3077.534390][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3077.534392][    C2] PKRU: 55555554
[ 3077.534394][    C2] Call Trace:
[ 3077.534401][    C2]  <IRQ>
[ 3077.534402][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 3077.534414][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 3077.534426][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 3077.534436][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 3077.534443][    C2]  </IRQ>
[ 3077.534444][    C2]  <TASK>
[ 3077.534446][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 3077.534451][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3077.534458][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 3077.534461][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3077.534463][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3077.534465][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3077.534467][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3077.534469][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3077.534470][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3077.534474][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3077.534480][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3077.534487][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3077.534492][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3077.534495][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3077.534500][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3077.534508][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3077.534512][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3077.534518][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3077.534521][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3077.534523][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3077.534528][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3077.534534][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3077.534539][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3077.534547][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3077.534555][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3077.534558][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3077.534561][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3077.534564][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3077.534566][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3077.534574][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3077.534577][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3077.534584][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3077.534588][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3077.534592][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3077.534598][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3077.534602][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3077.534609][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3077.534614][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3077.534620][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3077.534628][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3077.534632][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3077.534634][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3077.534638][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3077.534642][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3077.534649][ C2] ksys_write (fs/read_write.c:738) 
[ 3077.534653][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3077.534655][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3077.534663][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3077.534667][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3077.534670][    C2] RIP: 0033:0x7f471c970337
[ 3077.534676][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3077.534679][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3077.534682][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3077.534684][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3077.534686][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3077.534688][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3077.534690][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3104.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3104.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3104.512994][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3104.513010][    C2] Tainted: [L]=SOFTLOCKUP
[ 3104.513012][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3104.513014][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3104.513020][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3104.513023][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3104.513026][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3104.513028][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3104.513030][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3104.513032][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3104.513033][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3104.513035][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3104.513038][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3104.513042][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3104.513044][    C2] PKRU: 55555554
[ 3104.513045][    C2] Call Trace:
[ 3104.513050][    C2]  <TASK>
[ 3104.513054][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3104.513062][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3104.513068][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3104.513071][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3104.513076][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3104.513081][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3104.513085][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3104.513092][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3104.513095][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3104.513097][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3104.513102][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3104.513109][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3104.513114][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3104.513123][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3104.513131][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3104.513134][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3104.513137][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3104.513139][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3104.513143][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3104.513150][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3104.513154][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3104.513162][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3104.513165][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3104.513169][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3104.513176][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3104.513180][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3104.513187][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3104.513192][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3104.513199][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3104.513207][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3104.513211][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3104.513214][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3104.513218][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3104.513222][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3104.513229][ C2] ksys_write (fs/read_write.c:738) 
[ 3104.513233][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3104.513235][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3104.513244][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3104.513248][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3104.513253][    C2] RIP: 0033:0x7f471c970337
[ 3104.513259][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3104.513262][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3104.513265][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3104.513267][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3104.513268][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3104.513271][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3104.513273][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3108.550321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3108.550704][    C2] rcu: 2-....: (883353 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=218645
| [ 3108.551206][    C2] rcu: (t=884033 jiffies g=1286133 q=16976 ncpus=4)
| [ 3108.551455][    C2] Tainted: [L]=SOFTLOCKUP
[ 3108.551456][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3108.551459][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3108.551472][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3108.551475][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3108.551479][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3108.551481][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3108.551483][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3108.551485][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3108.551486][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3108.551488][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3108.551491][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3108.551495][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3108.551497][    C2] PKRU: 55555554
[ 3108.551498][    C2] Call Trace:
[ 3108.551500][    C2]  <TASK>
[ 3108.551502][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3108.551510][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3108.551515][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3108.551518][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3108.551523][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3108.551531][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3108.551534][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3108.551541][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3108.551543][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3108.551546][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3108.551551][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3108.551557][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3108.551562][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3108.551571][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3108.551579][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3108.551581][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3108.551585][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3108.551587][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3108.551590][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3108.551597][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3108.551600][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3108.551608][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3108.551611][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3108.551615][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3108.551622][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3108.551626][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3108.551632][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3108.551637][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3108.551644][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3108.551652][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3108.551655][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3108.551657][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3108.551661][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3108.551665][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3108.551672][ C2] ksys_write (fs/read_write.c:738) 
[ 3108.551675][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3108.551678][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3108.551685][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3108.551690][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3108.551693][    C2] RIP: 0033:0x7f471c970337
[ 3108.551699][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3108.551702][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3108.551705][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3108.551707][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3108.551709][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3108.551711][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3108.551712][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3136.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3136.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3136.512995][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3136.513010][    C2] Tainted: [L]=SOFTLOCKUP
[ 3136.513011][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3136.513014][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3136.513019][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 3136.513022][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3136.513025][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3136.513027][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3136.513029][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3136.513031][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3136.513033][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3136.513035][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3136.513039][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3136.513043][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3136.513045][    C2] PKRU: 55555554
[ 3136.513046][    C2] Call Trace:
[ 3136.513051][    C2]  <TASK>
[ 3136.513055][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3136.513063][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3136.513069][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3136.513072][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3136.513077][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3136.513081][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3136.513085][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3136.513092][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3136.513095][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3136.513098][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3136.513102][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3136.513109][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3136.513114][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3136.513123][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3136.513131][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3136.513133][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3136.513137][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3136.513139][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3136.513142][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3136.513150][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3136.513154][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3136.513162][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3136.513165][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3136.513169][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3136.513176][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3136.513181][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3136.513187][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3136.513192][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3136.513199][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3136.513207][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3136.513212][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3136.513214][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3136.513218][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3136.513222][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3136.513230][ C2] ksys_write (fs/read_write.c:738) 
[ 3136.513233][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3136.513236][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3136.513244][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3136.513248][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3136.513253][    C2] RIP: 0033:0x7f471c970337
[ 3136.513259][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3136.513261][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3136.513264][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3136.513266][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3136.513268][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3136.513270][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3136.513272][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3164.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3164.512986][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3164.512993][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3164.513009][    C2] Tainted: [L]=SOFTLOCKUP
[ 3164.513011][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3164.513013][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3164.513018][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3164.513021][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3164.513025][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3164.513027][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3164.513029][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3164.513031][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3164.513033][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3164.513035][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3164.513038][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3164.513042][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3164.513044][    C2] PKRU: 55555554
[ 3164.513045][    C2] Call Trace:
[ 3164.513049][    C2]  <TASK>
[ 3164.513054][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3164.513061][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3164.513068][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3164.513070][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3164.513075][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3164.513080][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3164.513084][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3164.513091][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3164.513094][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3164.513096][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3164.513101][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3164.513108][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3164.513113][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3164.513121][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3164.513129][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3164.513131][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3164.513134][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3164.513137][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3164.513140][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3164.513148][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3164.513151][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3164.513159][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3164.513163][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3164.513167][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3164.513173][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3164.513177][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3164.513184][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3164.513189][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3164.513196][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3164.513204][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3164.513209][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3164.513211][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3164.513215][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3164.513219][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3164.513226][ C2] ksys_write (fs/read_write.c:738) 
[ 3164.513230][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3164.513232][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3164.513241][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3164.513245][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3164.513250][    C2] RIP: 0033:0x7f471c970337
[ 3164.513256][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3164.513259][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3164.513262][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3164.513264][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3164.513266][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3164.513268][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3164.513270][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3175.838972][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3175.839166][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 3175.839446][    C2] NMI backtrace for cpu 2
| [ 3175.839465][    C2] Tainted: [L]=SOFTLOCKUP
[ 3175.839467][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3175.839469][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 3175.839481][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 3175.839484][    C2] RSP: 0018:ffffc9000029f5b8 EFLAGS: 00000282
[ 3175.839489][    C2] RAX: ffff88800b85eb34 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3175.839491][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3175.839493][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3175.839495][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3175.839497][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3175.839499][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3175.839502][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3175.839505][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3175.839507][    C2] PKRU: 55555554
[ 3175.839509][    C2] Call Trace:
[ 3175.839511][    C2]  <TASK>
[ 3175.839514][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3175.839525][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3175.839532][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3175.839537][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3175.839540][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3175.839544][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3175.839552][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3175.839557][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3175.839563][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3175.839566][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3175.839569][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3175.839574][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3175.839580][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3175.839585][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3175.839594][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3175.839602][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3175.839605][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3175.839608][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3175.839610][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3175.839613][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3175.839620][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3175.839624][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3175.839631][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3175.839635][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3175.839639][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3175.839646][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3175.839650][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3175.839656][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3175.839662][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3175.839668][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3175.839675][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3175.839679][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3175.839681][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3175.839685][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3175.839689][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3175.839696][ C2] ksys_write (fs/read_write.c:738) 
[ 3175.839700][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3175.839702][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3175.839710][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3175.839715][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3175.839719][    C2] RIP: 0033:0x7f471c970337
[ 3175.839725][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3175.839728][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3175.839731][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3175.839733][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3175.839735][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3175.839737][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3175.839739][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3186.553323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3186.553893][    C2] rcu: 2-....: (961291 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=237949
| [ 3186.554266][    C2] rcu: (t=962036 jiffies g=1286133 q=18369 ncpus=4)
| [ 3186.554518][    C2] Tainted: [L]=SOFTLOCKUP
[ 3186.554520][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3186.554522][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3186.554535][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3186.554538][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3186.554542][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3186.554544][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3186.554546][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3186.554548][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3186.554550][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3186.554552][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3186.554555][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3186.554559][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3186.554561][    C2] PKRU: 55555554
[ 3186.554562][    C2] Call Trace:
[ 3186.554563][    C2]  <TASK>
[ 3186.554566][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3186.554574][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3186.554579][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3186.554581][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3186.554586][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3186.554594][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3186.554598][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3186.554604][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3186.554607][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3186.554609][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3186.554614][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3186.554620][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3186.554625][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3186.554633][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3186.554641][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3186.554643][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3186.554646][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3186.554649][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3186.554652][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3186.554659][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3186.554663][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3186.554670][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3186.554674][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3186.554678][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3186.554685][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3186.554689][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3186.554695][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3186.554700][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3186.554706][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3186.554714][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3186.554717][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3186.554720][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3186.554724][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3186.554727][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3186.554735][ C2] ksys_write (fs/read_write.c:738) 
[ 3186.554738][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3186.554741][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3186.554749][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3186.554753][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3186.554757][    C2] RIP: 0033:0x7f471c970337
[ 3186.554763][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3186.554766][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3186.554769][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3186.554771][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3186.554772][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3186.554775][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3186.554776][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3186.554771][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
| [ 3186.554772][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
| [ 3186.554775][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
| [ 3186.554776][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3186.554782][    C2]  </TASK>
[ 3196.317388][   T44] INFO: task mptcp_connect:16951 blocked for more than 860 seconds.
[ 3196.317875][   T44]       Tainted: G             L      6.16.0-rc6-virtme #1
[ 3196.318122][   T44]       Blocked by coredump.
[ 3196.318376][   T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 3196.318646][   T44] task:mptcp_connect   state:D stack:26032 pid:16951 tgid:16951 ppid:16948  task_flags:0x40010c flags:0x00004002
[ 3196.319078][   T44] Call Trace:
[ 3196.319200][   T44]  <TASK>
[ 3196.319285][ T44] __schedule (kernel/sched/core.c:5397 kernel/sched/core.c:6786) 
[ 3196.319493][ T44] ? try_to_wake_up (kernel/sched/core.c:4014 kernel/sched/core.c:4343) 
[ 3196.319739][ T44] ? __pfx___schedule (kernel/sched/core.c:6663) 
[ 3196.319901][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3196.320074][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3196.320230][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3196.320487][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3196.320647][ T44] ? schedule (kernel/sched/core.c:6845 kernel/sched/core.c:6878) 
[ 3196.320775][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3196.320934][ T44] schedule (kernel/sched/core.c:6865 kernel/sched/core.c:6879) 
[ 3196.321057][ T44] synchronize_rcu_expedited (kernel/rcu/rcu.h:156 kernel/rcu/tree_exp.h:67 kernel/rcu/tree_exp.h:274 kernel/rcu/tree_exp.h:1013) 
[ 3196.321295][ T44] ? __pfx_synchronize_rcu_expedited (kernel/rcu/tree_exp.h:962) 
[ 3196.321513][ T44] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383) 
[ 3196.321714][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3196.321959][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3196.322119][ T44] ? __pfx_wait_rcu_exp_gp (kernel/rcu/tree_exp.h:488) 
[ 3196.322282][ T44] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3196.322449][ T44] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3196.322688][ T44] namespace_unlock (fs/namespace.c:1804) 
[ 3196.322857][ T44] ? umount_tree (./include/linux/list.h:1024 fs/namespace.c:1909) 
[ 3196.323016][ T44] ? __pfx_namespace_unlock (fs/namespace.c:1775) 
[ 3196.323178][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3196.323344][ T44] ? __pfx_umount_tree (fs/namespace.c:1857) 
[ 3196.323507][ T44] ? put_mnt_ns (fs/namespace.c:6282 fs/namespace.c:6274) 
[ 3196.323628][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3196.323791][ T44] put_mnt_ns (fs/namespace.c:6283 fs/namespace.c:6274) 
[ 3196.323912][ T44] free_nsproxy (kernel/nsproxy.c:189) 
[ 3196.324163][ T44] do_exit (./include/linux/task_work.h:40 kernel/exit.c:964) 
[ 3196.324291][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3196.324458][ T44] ? __pfx_do_exit (kernel/exit.c:897) 
[ 3196.324617][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3196.324856][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3196.325016][ T44] do_group_exit (kernel/exit.c:1086) 
[ 3196.325173][ T44] __x64_sys_exit_group (kernel/exit.c:1114) 
[ 3196.325338][ T44] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 3196.325586][ T44] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3196.325745][ T44] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3196.325943][   T44] RIP: 0033:0x7f1e66bbcadd
[ 3196.326107][   T44] RSP: 002b:00007ffe10f0a388 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 3196.326443][   T44] RAX: ffffffffffffffda RBX: 00007f1e66cd89c0 RCX: 00007f1e66bbcadd
[ 3196.326685][   T44] RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
[ 3196.327009][   T44] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000028
[ 3196.327248][   T44] R10: 00007ffe10f0a210 R11: 0000000000000246 R12: 00007f1e66cd89c0
[ 3196.327492][   T44] R13: 00007f1e66cddf20 R14: 0000000000000001 R15: 00007f1e66cddf08
| [ 3212.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3212.512986][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3212.512994][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3212.513009][    C2] Tainted: [L]=SOFTLOCKUP
[ 3212.513011][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3212.513013][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 3212.513023][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 3212.513026][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 3212.513029][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3212.513031][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3212.513034][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3212.513036][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3212.513037][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3212.513040][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3212.513042][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3212.513046][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3212.513048][    C2] PKRU: 55555554
[ 3212.513050][    C2] Call Trace:
[ 3212.513054][    C2]  <TASK>
[ 3212.513056][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3212.513064][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3212.513071][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3212.513077][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3212.513080][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3212.513085][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3212.513090][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3212.513095][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3212.513101][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3212.513104][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3212.513107][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3212.513111][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3212.513117][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3212.513123][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3212.513131][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3212.513139][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3212.513142][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3212.513145][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3212.513147][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3212.513150][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3212.513158][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3212.513162][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3212.513170][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3212.513173][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3212.513177][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3212.513184][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3212.513188][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3212.513195][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3212.513200][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3212.513207][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3212.513214][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3212.513218][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3212.513220][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3212.513224][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3212.513228][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3212.513235][ C2] ksys_write (fs/read_write.c:738) 
[ 3212.513239][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3212.513241][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3212.513250][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3212.513254][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3212.513259][    C2] RIP: 0033:0x7f471c970337
[ 3212.513265][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3212.513267][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3212.513271][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3212.513273][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3212.513275][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3212.513277][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3212.513279][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3240.512987][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3240.512991][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3240.512999][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3240.513015][    C2] Tainted: [L]=SOFTLOCKUP
[ 3240.513016][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3240.513018][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3240.513024][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3240.513027][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3240.513030][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3240.513033][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3240.513035][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3240.513037][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3240.513039][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3240.513041][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3240.513043][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3240.513047][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3240.513049][    C2] PKRU: 55555554
[ 3240.513050][    C2] Call Trace:
[ 3240.513055][    C2]  <TASK>
[ 3240.513060][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3240.513068][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3240.513075][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3240.513078][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3240.513082][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3240.513087][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3240.513091][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3240.513098][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3240.513101][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3240.513104][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3240.513109][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3240.513115][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3240.513120][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3240.513129][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3240.513137][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3240.513140][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3240.513143][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3240.513146][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3240.513148][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3240.513156][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3240.513159][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3240.513167][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3240.513171][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3240.513175][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3240.513182][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3240.513186][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3240.513193][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3240.513199][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3240.513206][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3240.513213][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3240.513218][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3240.513220][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3240.513224][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3240.513228][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3240.513235][ C2] ksys_write (fs/read_write.c:738) 
[ 3240.513239][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3240.513241][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3240.513249][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3240.513254][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3240.513259][    C2] RIP: 0033:0x7f471c970337
[ 3240.513265][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3240.513268][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3240.513271][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3240.513273][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3240.513275][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3240.513277][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3240.513279][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3264.556322][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3264.556729][    C2] rcu: 2-....: (1039243 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=257400
| [ 3264.557263][    C2] rcu: (t=1040039 jiffies g=1286133 q=19658 ncpus=4)
| [ 3264.557529][    C2] Tainted: [L]=SOFTLOCKUP
[ 3264.557531][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3264.557533][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3264.557546][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3264.557549][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3264.557554][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3264.557556][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3264.557558][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3264.557559][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3264.557561][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3264.557563][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3264.557566][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3264.557570][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3264.557572][    C2] PKRU: 55555554
[ 3264.557573][    C2] Call Trace:
[ 3264.557574][    C2]  <TASK>
[ 3264.557576][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3264.557584][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3264.557591][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3264.557593][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3264.557599][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3264.557608][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3264.557611][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3264.557618][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3264.557620][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3264.557623][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3264.557628][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3264.557634][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3264.557639][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3264.557648][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3264.557656][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3264.557659][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3264.557662][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3264.557664][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3264.557667][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3264.557675][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3264.557678][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3264.557686][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3264.557690][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3264.557694][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3264.557701][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3264.557705][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3264.557712][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3264.557717][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3264.557724][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3264.557732][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3264.557736][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3264.557738][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3264.557741][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3264.557745][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3264.557752][ C2] ksys_write (fs/read_write.c:738) 
[ 3264.557755][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3264.557758][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3264.557766][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3264.557771][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3264.557775][    C2] RIP: 0033:0x7f471c970337
[ 3264.557780][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3264.557782][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3264.557786][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3264.557788][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3264.557789][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3264.557791][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3264.557793][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3274.141925][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3274.142137][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 3274.142319][    C2] NMI backtrace for cpu 2
| [ 3274.142334][    C2] Tainted: [L]=SOFTLOCKUP
[ 3274.142336][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3274.142338][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 3274.142348][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 3274.142350][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 3274.142354][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 3274.142356][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 3274.142358][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 3274.142360][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 3274.142362][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 3274.142364][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3274.142366][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3274.142371][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3274.142373][    C2] PKRU: 55555554
[ 3274.142374][    C2] Call Trace:
[ 3274.142377][    C2]  <IRQ>
[ 3274.142379][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 3274.142389][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 3274.142399][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 3274.142407][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 3274.142413][    C2]  </IRQ>
[ 3274.142414][    C2]  <TASK>
[ 3274.142416][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 3274.142421][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3274.142427][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3274.142429][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3274.142432][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3274.142433][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3274.142435][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3274.142437][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3274.142439][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3274.142442][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3274.142449][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3274.142455][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3274.142459][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3274.142462][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3274.142466][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3274.142473][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3274.142477][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3274.142483][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3274.142485][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3274.142488][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3274.142493][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3274.142499][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3274.142504][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3274.142510][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3274.142518][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3274.142520][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3274.142523][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3274.142526][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3274.142529][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3274.142535][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3274.142539][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3274.142546][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3274.142550][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3274.142553][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3274.142559][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3274.142563][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3274.142568][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3274.142573][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3274.142579][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3274.142585][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3274.142589][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3274.142591][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3274.142595][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3274.142598][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3274.142605][ C2] ksys_write (fs/read_write.c:738) 
[ 3274.142609][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3274.142611][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3274.142617][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3274.142621][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3274.142624][    C2] RIP: 0033:0x7f471c970337
[ 3274.142629][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3274.142631][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3274.142634][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3274.142636][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3274.142638][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3274.142639][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3274.142641][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3300.512977][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3300.512981][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3300.512987][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3300.513000][    C2] Tainted: [L]=SOFTLOCKUP
[ 3300.513002][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3300.513004][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3300.513009][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3300.513012][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3300.513016][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3300.513018][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3300.513020][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3300.513022][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3300.513024][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3300.513026][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3300.513028][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3300.513032][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3300.513035][    C2] PKRU: 55555554
[ 3300.513036][    C2] Call Trace:
[ 3300.513040][    C2]  <TASK>
[ 3300.513044][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3300.513052][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3300.513057][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3300.513060][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3300.513065][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3300.513069][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3300.513073][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3300.513080][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3300.513083][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3300.513086][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3300.513090][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3300.513096][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3300.513101][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3300.513109][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3300.513116][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3300.513119][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3300.513122][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3300.513124][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3300.513127][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3300.513134][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3300.513138][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3300.513145][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3300.513149][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3300.513153][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3300.513159][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3300.513164][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3300.513169][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3300.513174][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3300.513181][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3300.513187][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3300.513191][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3300.513194][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3300.513198][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3300.513201][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3300.513208][ C2] ksys_write (fs/read_write.c:738) 
[ 3300.513212][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3300.513215][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3300.513222][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3300.513227][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3300.513231][    C2] RIP: 0033:0x7f471c970337
[ 3300.513235][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3300.513238][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3300.513242][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3300.513244][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3300.513246][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3300.513247][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3300.513249][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3300.513244][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
| [ 3300.513246][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
| [ 3300.513247][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
| [ 3300.513249][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3300.513256][    C2]  </TASK>
[ 3319.198394][   T44] INFO: task mptcp_connect:16951 blocked for more than 983 seconds.
[ 3319.198853][   T44]       Tainted: G             L      6.16.0-rc6-virtme #1
[ 3319.199087][   T44]       Blocked by coredump.
[ 3319.199235][   T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 3319.199589][   T44] task:mptcp_connect   state:D stack:26032 pid:16951 tgid:16951 ppid:16948  task_flags:0x40010c flags:0x00004002
[ 3319.199958][   T44] Call Trace:
[ 3319.200077][   T44]  <TASK>
[ 3319.200239][ T44] __schedule (kernel/sched/core.c:5397 kernel/sched/core.c:6786) 
[ 3319.200420][ T44] ? try_to_wake_up (kernel/sched/core.c:4014 kernel/sched/core.c:4343) 
[ 3319.200595][ T44] ? __pfx___schedule (kernel/sched/core.c:6663) 
[ 3319.200753][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3319.200991][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3319.201149][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3319.201357][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3319.201520][ T44] ? schedule (kernel/sched/core.c:6845 kernel/sched/core.c:6878) 
[ 3319.201641][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3319.201886][ T44] schedule (kernel/sched/core.c:6865 kernel/sched/core.c:6879) 
[ 3319.202007][ T44] synchronize_rcu_expedited (kernel/rcu/rcu.h:156 kernel/rcu/tree_exp.h:67 kernel/rcu/tree_exp.h:274 kernel/rcu/tree_exp.h:1013) 
[ 3319.202167][ T44] ? __pfx_synchronize_rcu_expedited (kernel/rcu/tree_exp.h:962) 
[ 3319.202456][ T44] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383) 
[ 3319.202662][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3319.202820][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3319.202983][ T44] ? __pfx_wait_rcu_exp_gp (kernel/rcu/tree_exp.h:488) 
[ 3319.203219][ T44] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3319.203387][ T44] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3319.203548][ T44] namespace_unlock (fs/namespace.c:1804) 
[ 3319.203708][ T44] ? umount_tree (./include/linux/list.h:1024 fs/namespace.c:1909) 
[ 3319.203981][ T44] ? __pfx_namespace_unlock (fs/namespace.c:1775) 
[ 3319.204146][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3319.204312][ T44] ? __pfx_umount_tree (fs/namespace.c:1857) 
[ 3319.204480][ T44] ? put_mnt_ns (fs/namespace.c:6282 fs/namespace.c:6274) 
[ 3319.204601][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3319.204840][ T44] put_mnt_ns (fs/namespace.c:6283 fs/namespace.c:6274) 
[ 3319.204961][ T44] free_nsproxy (kernel/nsproxy.c:189) 
[ 3319.205123][ T44] do_exit (./include/linux/task_work.h:40 kernel/exit.c:964) 
[ 3319.205244][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3319.205500][ T44] ? __pfx_do_exit (kernel/exit.c:897) 
[ 3319.205658][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3319.205817][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3319.205977][ T44] do_group_exit (kernel/exit.c:1086) 
[ 3319.206215][ T44] __x64_sys_exit_group (kernel/exit.c:1114) 
[ 3319.206381][ T44] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 3319.206549][ T44] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3319.206705][ T44] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3319.206998][   T44] RIP: 0033:0x7f1e66bbcadd
[ 3319.207159][   T44] RSP: 002b:00007ffe10f0a388 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 3319.207405][   T44] RAX: ffffffffffffffda RBX: 00007f1e66cd89c0 RCX: 00007f1e66bbcadd
[ 3319.207723][   T44] RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
[ 3319.207961][   T44] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000028
[ 3319.208206][   T44] R10: 00007ffe10f0a210 R11: 0000000000000246 R12: 00007f1e66cd89c0
[ 3319.208533][   T44] R13: 00007f1e66cddf20 R14: 0000000000000001 R15: 00007f1e66cddf08
| [ 3328.512976][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3328.512981][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3328.512986][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3328.512999][    C2] Tainted: [L]=SOFTLOCKUP
[ 3328.513001][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3328.513003][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3328.513008][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3328.513012][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3328.513015][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3328.513017][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3328.513019][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3328.513021][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3328.513023][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3328.513025][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3328.513027][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3328.513031][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3328.513034][    C2] PKRU: 55555554
[ 3328.513035][    C2] Call Trace:
[ 3328.513039][    C2]  <TASK>
[ 3328.513043][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3328.513051][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3328.513057][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3328.513060][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3328.513064][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3328.513069][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3328.513073][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3328.513080][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3328.513083][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3328.513085][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3328.513090][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3328.513096][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3328.513101][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3328.513108][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3328.513116][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3328.513118][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3328.513122][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3328.513124][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3328.513127][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3328.513133][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3328.513137][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3328.513145][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3328.513148][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3328.513152][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3328.513158][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3328.513162][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3328.513167][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3328.513172][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3328.513179][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3328.513185][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3328.513189][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3328.513192][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3328.513196][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3328.513200][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3328.513207][ C2] ksys_write (fs/read_write.c:738) 
[ 3328.513210][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3328.513213][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3328.513220][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3328.513224][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3328.513228][    C2] RIP: 0033:0x7f471c970337
[ 3328.513233][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3328.513235][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3328.513239][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3328.513241][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3328.513243][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3328.513244][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3328.513246][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3342.559321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3342.559867][    C2] rcu: 2-....: (1117172 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=276793
| [ 3342.560265][    C2] rcu: (t=1118042 jiffies g=1286133 q=21356 ncpus=4)
| [ 3342.560643][    C2] Tainted: [L]=SOFTLOCKUP
[ 3342.560644][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3342.560647][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3342.560657][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3342.560661][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3342.560664][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3342.560667][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3342.560669][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3342.560670][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3342.560672][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3342.560674][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3342.560677][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3342.560681][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3342.560683][    C2] PKRU: 55555554
[ 3342.560684][    C2] Call Trace:
[ 3342.560685][    C2]  <TASK>
[ 3342.560688][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3342.560695][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3342.560700][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3342.560703][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3342.560707][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3342.560713][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3342.560717][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3342.560723][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3342.560726][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3342.560728][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3342.560733][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3342.560739][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3342.560744][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3342.560751][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3342.560759][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3342.560761][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3342.560764][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3342.560767][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3342.560770][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3342.560776][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3342.560779][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3342.560786][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3342.560790][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3342.560794][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3342.560800][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3342.560804][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3342.560810][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3342.560814][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3342.560821][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3342.560828][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3342.560831][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3342.560834][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3342.560837][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3342.560841][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3342.560849][ C2] ksys_write (fs/read_write.c:738) 
[ 3342.560852][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3342.560854][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3342.560861][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3342.560865][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3342.560868][    C2] RIP: 0033:0x7f471c970337
[ 3342.560873][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3342.560876][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3342.560879][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3342.560881][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3342.560883][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3342.560885][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3342.560886][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3368.512975][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3368.512979][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3368.512985][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3368.512999][    C2] Tainted: [L]=SOFTLOCKUP
[ 3368.513001][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3368.513003][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:103 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3368.513011][ C2] Code: 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d 59 01 48 89 da <48> 29 ea 48 83 fa 10 0f 8e c0 00 00 00 41 89 eb 41 83 e3 07 75 7d
All code
========
   0:	37                   	(bad)
   1:	ff 48 89             	decl   -0x77(%rax)
   4:	fd                   	std
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	4d 89 d1             	mov    %r10,%r9
  12:	48 c1 ed 03          	shr    $0x3,%rbp
  16:	49 c1 e9 03          	shr    $0x3,%r9
  1a:	48 01 c5             	add    %rax,%rbp
  1d:	49 01 c1             	add    %rax,%r9
  20:	48 89 e8             	mov    %rbp,%rax
  23:	49 8d 59 01          	lea    0x1(%r9),%rbx
  27:	48 89 da             	mov    %rbx,%rdx
  2a:*	48 29 ea             	sub    %rbp,%rdx		<-- trapping instruction
  2d:	48 83 fa 10          	cmp    $0x10,%rdx
  31:	0f 8e c0 00 00 00    	jle    0xf7
  37:	41 89 eb             	mov    %ebp,%r11d
  3a:	41 83 e3 07          	and    $0x7,%r11d
  3e:	75 7d                	jne    0xbd

Code starting with the faulting instruction
===========================================
   0:	48 29 ea             	sub    %rbp,%rdx
   3:	48 83 fa 10          	cmp    $0x10,%rdx
   7:	0f 8e c0 00 00 00    	jle    0xcd
   d:	41 89 eb             	mov    %ebp,%r11d
  10:	41 83 e3 07          	and    $0x7,%r11d
  14:	75 7d                	jne    0x93
[ 3368.513014][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000286
[ 3368.513017][    C2] RAX: ffffed100170bd66 RBX: ffffed100170bd67 RCX: ffffffffa2cd0f13
[ 3368.513019][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3368.513021][    C2] RBP: ffffed100170bd66 R08: 0000000000000000 R09: ffffed100170bd66
[ 3368.513023][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3368.513025][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3368.513027][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3368.513030][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3368.513034][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3368.513036][    C2] PKRU: 55555554
[ 3368.513037][    C2] Call Trace:
[ 3368.513041][    C2]  <TASK>
[ 3368.513045][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3368.513051][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3368.513058][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3368.513063][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3368.513066][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3368.513070][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3368.513075][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3368.513079][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3368.513085][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3368.513088][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3368.513091][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3368.513095][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3368.513101][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3368.513106][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3368.513113][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3368.513121][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3368.513123][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3368.513126][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3368.513129][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3368.513132][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3368.513138][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3368.513141][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3368.513149][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3368.513153][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3368.513156][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3368.513162][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3368.513166][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3368.513172][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3368.513176][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3368.513183][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3368.513189][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3368.513193][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3368.513195][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3368.513199][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3368.513203][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3368.513210][ C2] ksys_write (fs/read_write.c:738) 
[ 3368.513213][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3368.513216][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3368.513222][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3368.513227][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3368.513231][    C2] RIP: 0033:0x7f471c970337
[ 3368.513236][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3368.513239][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3368.513242][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3368.513244][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3368.513246][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3368.513248][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3368.513250][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3372.445876][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3372.446069][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 3372.446321][    C2] NMI backtrace for cpu 2
| [ 3372.446335][    C2] Tainted: [L]=SOFTLOCKUP
[ 3372.446337][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3372.446339][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 3372.446347][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 3372.446351][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 3372.446354][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 3372.446356][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 3372.446358][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 3372.446360][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 3372.446362][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 3372.446364][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3372.446367][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3372.446370][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3372.446372][    C2] PKRU: 55555554
[ 3372.446374][    C2] Call Trace:
[ 3372.446376][    C2]  <IRQ>
[ 3372.446383][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 3372.446391][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 3372.446398][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 3372.446404][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 3372.446410][    C2]  </IRQ>
[ 3372.446411][    C2]  <TASK>
[ 3372.446413][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 3372.446417][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3372.446422][ C2] Code: ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 <89> 44 24 40 85 c0 0f 85 6e 01 00 00 48 89 ef be 04 00 00 00 e8 60
All code
========
   0:	ff                   	lcall  (bad)
   1:	df 49 01             	fisttps 0x1(%rcx)
   4:	c6 41 83 c5          	movb   $0xc5,-0x7d(%rcx)
   8:	03 be 04 00 00 00    	add    0x4(%rsi),%edi
   e:	48 89 ef             	mov    %rbp,%rdi
  11:	e8 5d 3f e5 fd       	call   0xfffffffffde53f73
  16:	41 0f b6 06          	movzbl (%r14),%eax
  1a:	41 38 c5             	cmp    %al,%r13b
  1d:	7c 08                	jl     0x27
  1f:	84 c0                	test   %al,%al
  21:	0f 85 8d 07 00 00    	jne    0x7b4
  27:	8b 45 00             	mov    0x0(%rbp),%eax
  2a:*	89 44 24 40          	mov    %eax,0x40(%rsp)		<-- trapping instruction
  2e:	85 c0                	test   %eax,%eax
  30:	0f 85 6e 01 00 00    	jne    0x1a4
  36:	48 89 ef             	mov    %rbp,%rdi
  39:	be 04 00 00 00       	mov    $0x4,%esi
  3e:	e8                   	.byte 0xe8
  3f:	60                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 44 24 40          	mov    %eax,0x40(%rsp)
   4:	85 c0                	test   %eax,%eax
   6:	0f 85 6e 01 00 00    	jne    0x17a
   c:	48 89 ef             	mov    %rbp,%rdi
   f:	be 04 00 00 00       	mov    $0x4,%esi
  14:	e8                   	.byte 0xe8
  15:	60                   	(bad)
[ 3372.446425][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000246
[ 3372.446427][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3372.446429][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3372.446431][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3372.446433][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3372.446435][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3372.446439][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3372.446445][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3372.446452][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3372.446456][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3372.446458][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3372.446462][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3372.446469][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3372.446473][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3372.446479][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3372.446482][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3372.446485][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3372.446490][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3372.446495][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3372.446500][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3372.446507][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3372.446514][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3372.446517][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3372.446520][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3372.446522][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3372.446525][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3372.446531][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3372.446534][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3372.446541][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3372.446545][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3372.446549][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3372.446555][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3372.446559][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3372.446564][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3372.446568][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3372.446575][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3372.446581][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3372.446584][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3372.446587][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3372.446590][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3372.446594][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3372.446601][ C2] ksys_write (fs/read_write.c:738) 
[ 3372.446605][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3372.446607][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3372.446613][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3372.446617][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3372.446620][    C2] RIP: 0033:0x7f471c970337
[ 3372.446624][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3372.446626][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3372.446629][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3372.446631][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3372.446633][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3372.446635][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3372.446637][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3396.512974][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3396.512978][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3396.512984][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3396.512998][    C2] Tainted: [L]=SOFTLOCKUP
[ 3396.512999][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3396.513002][ C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:64 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3396.513009][ C2] Code: 5b 5d 41 5c e9 0b fb 1a 02 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df <4d> 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d
All code
========
   0:	5b                   	pop    %rbx
   1:	5d                   	pop    %rbp
   2:	41 5c                	pop    %r12
   4:	e9 0b fb 1a 02       	jmp    0x21afb14
   9:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  10:	7f ff ff 
  13:	48 39 c7             	cmp    %rax,%rdi
  16:	76 dd                	jbe    0xfffffffffffffff5
  18:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  1d:	48 89 fd             	mov    %rdi,%rbp
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df 
  2a:*	4d 89 d1             	mov    %r10,%r9		<-- trapping instruction
  2d:	48 c1 ed 03          	shr    $0x3,%rbp
  31:	49 c1 e9 03          	shr    $0x3,%r9
  35:	48 01 c5             	add    %rax,%rbp
  38:	49 01 c1             	add    %rax,%r9
  3b:	48 89 e8             	mov    %rbp,%rax
  3e:	49                   	rex.WB
  3f:	8d                   	.byte 0x8d

Code starting with the faulting instruction
===========================================
   0:	4d 89 d1             	mov    %r10,%r9
   3:	48 c1 ed 03          	shr    $0x3,%rbp
   7:	49 c1 e9 03          	shr    $0x3,%r9
   b:	48 01 c5             	add    %rax,%rbp
   e:	49 01 c1             	add    %rax,%r9
  11:	48 89 e8             	mov    %rbp,%rax
  14:	49                   	rex.WB
  15:	8d                   	.byte 0x8d
[ 3396.513012][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000212
[ 3396.513015][    C2] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3396.513018][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3396.513019][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3396.513021][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3396.513023][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3396.513026][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3396.513028][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3396.513033][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3396.513035][    C2] PKRU: 55555554
[ 3396.513036][    C2] Call Trace:
[ 3396.513039][    C2]  <TASK>
[ 3396.513044][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3396.513049][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3396.513057][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3396.513061][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3396.513064][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3396.513068][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3396.513073][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3396.513077][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3396.513084][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3396.513086][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3396.513089][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3396.513094][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3396.513100][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3396.513105][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3396.513112][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3396.513120][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3396.513123][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3396.513126][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3396.513128][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3396.513131][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3396.513137][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3396.513141][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3396.513149][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3396.513152][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3396.513156][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3396.513162][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3396.513166][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3396.513172][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3396.513176][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3396.513183][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3396.513189][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3396.513193][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3396.513196][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3396.513199][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3396.513203][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3396.513210][ C2] ksys_write (fs/read_write.c:738) 
[ 3396.513214][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3396.513217][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3396.513224][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3396.513228][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3396.513233][    C2] RIP: 0033:0x7f471c970337
[ 3396.513238][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3396.513241][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3396.513244][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3396.513246][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3396.513248][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3396.513250][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3396.513252][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3420.562321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3420.562755][    C2] rcu: 2-....: (1195103 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=296247
| [ 3420.563277][    C2] rcu: (t=1196045 jiffies g=1286133 q=22830 ncpus=4)
| [ 3420.563531][    C2] Tainted: [L]=SOFTLOCKUP
[ 3420.563532][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3420.563535][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3420.563544][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3420.563547][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3420.563551][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3420.563553][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3420.563555][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3420.563557][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3420.563559][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3420.563561][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3420.563563][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3420.563567][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3420.563569][    C2] PKRU: 55555554
[ 3420.563571][    C2] Call Trace:
[ 3420.563572][    C2]  <TASK>
[ 3420.563574][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3420.563582][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3420.563587][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3420.563589][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3420.563593][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3420.563600][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3420.563604][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3420.563610][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3420.563613][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3420.563615][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3420.563621][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3420.563626][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3420.563631][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3420.563639][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3420.563646][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3420.563648][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3420.563652][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3420.563654][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3420.563657][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3420.563663][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3420.563667][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3420.563674][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3420.563678][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3420.563682][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3420.563687][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3420.563691][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3420.563696][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3420.563701][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3420.563707][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3420.563714][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3420.563717][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3420.563719][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3420.563723][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3420.563727][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3420.563734][ C2] ksys_write (fs/read_write.c:738) 
[ 3420.563737][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3420.563740][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3420.563747][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3420.563751][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3420.563755][    C2] RIP: 0033:0x7f471c970337
[ 3420.563760][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3420.563763][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3420.563766][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3420.563768][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3420.563770][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3420.563772][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3420.563774][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3420.563768][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
| [ 3420.563770][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
| [ 3420.563772][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
| [ 3420.563774][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3420.563780][    C2]  </TASK>
[ 3442.077404][   T44] INFO: task mptcp_connect:16951 blocked for more than 1105 seconds.
[ 3442.077736][   T44]       Tainted: G             L      6.16.0-rc6-virtme #1
[ 3442.077969][   T44]       Blocked by coredump.
[ 3442.078207][   T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 3442.078481][   T44] task:mptcp_connect   state:D stack:26032 pid:16951 tgid:16951 ppid:16948  task_flags:0x40010c flags:0x00004002
[ 3442.078929][   T44] Call Trace:
[ 3442.079050][   T44]  <TASK>
[ 3442.079145][ T44] __schedule (kernel/sched/core.c:5397 kernel/sched/core.c:6786) 
[ 3442.079333][ T44] ? try_to_wake_up (kernel/sched/core.c:4014 kernel/sched/core.c:4343) 
[ 3442.079580][ T44] ? __pfx___schedule (kernel/sched/core.c:6663) 
[ 3442.079751][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3442.079911][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3442.080070][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3442.080310][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3442.080520][ T44] ? schedule (kernel/sched/core.c:6845 kernel/sched/core.c:6878) 
[ 3442.080647][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3442.080826][ T44] schedule (kernel/sched/core.c:6865 kernel/sched/core.c:6879) 
[ 3442.080949][ T44] synchronize_rcu_expedited (kernel/rcu/rcu.h:156 kernel/rcu/tree_exp.h:67 kernel/rcu/tree_exp.h:274 kernel/rcu/tree_exp.h:1013) 
[ 3442.081190][ T44] ? __pfx_synchronize_rcu_expedited (kernel/rcu/tree_exp.h:962) 
[ 3442.081402][ T44] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383) 
[ 3442.081600][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3442.081855][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3442.082029][ T44] ? __pfx_wait_rcu_exp_gp (kernel/rcu/tree_exp.h:488) 
[ 3442.082189][ T44] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3442.082360][ T44] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3442.082601][ T44] namespace_unlock (fs/namespace.c:1804) 
[ 3442.082774][ T44] ? umount_tree (./include/linux/list.h:1024 fs/namespace.c:1909) 
[ 3442.082937][ T44] ? __pfx_namespace_unlock (fs/namespace.c:1775) 
[ 3442.083095][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3442.083343][ T44] ? __pfx_umount_tree (fs/namespace.c:1857) 
[ 3442.083513][ T44] ? put_mnt_ns (fs/namespace.c:6282 fs/namespace.c:6274) 
[ 3442.083634][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3442.083806][ T44] put_mnt_ns (fs/namespace.c:6283 fs/namespace.c:6274) 
[ 3442.083928][ T44] free_nsproxy (kernel/nsproxy.c:189) 
[ 3442.084179][ T44] do_exit (./include/linux/task_work.h:40 kernel/exit.c:964) 
[ 3442.084301][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3442.084469][ T44] ? __pfx_do_exit (kernel/exit.c:897) 
[ 3442.084628][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3442.084890][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3442.085050][ T44] do_group_exit (kernel/exit.c:1086) 
[ 3442.085209][ T44] __x64_sys_exit_group (kernel/exit.c:1114) 
[ 3442.085378][ T44] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 3442.085619][ T44] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3442.085789][ T44] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3442.085999][   T44] RIP: 0033:0x7f1e66bbcadd
[ 3442.086164][   T44] RSP: 002b:00007ffe10f0a388 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 3442.086511][   T44] RAX: ffffffffffffffda RBX: 00007f1e66cd89c0 RCX: 00007f1e66bbcadd
[ 3442.086755][   T44] RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
[ 3442.087085][   T44] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000028
[ 3442.087331][   T44] R10: 00007ffe10f0a210 R11: 0000000000000246 R12: 00007f1e66cd89c0
[ 3442.087579][   T44] R13: 00007f1e66cddf20 R14: 0000000000000001 R15: 00007f1e66cddf08
| [ 3448.512987][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3448.512991][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3448.512999][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3448.513015][    C2] Tainted: [L]=SOFTLOCKUP
[ 3448.513018][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3448.513020][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3448.513027][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3448.513030][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3448.513034][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3448.513037][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3448.513039][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3448.513041][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3448.513043][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3448.513045][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3448.513048][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3448.513052][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3448.513055][    C2] PKRU: 55555554
[ 3448.513056][    C2] Call Trace:
[ 3448.513060][    C2]  <TASK>
[ 3448.513066][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3448.513075][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3448.513082][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3448.513084][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3448.513089][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3448.513094][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3448.513099][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3448.513106][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3448.513109][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3448.513112][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3448.513116][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3448.513123][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3448.513128][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3448.513137][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3448.513146][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3448.513149][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3448.513152][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3448.513154][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3448.513157][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3448.513165][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3448.513169][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3448.513177][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3448.513181][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3448.513185][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3448.513193][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3448.513197][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3448.513204][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3448.513210][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3448.513217][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3448.513225][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3448.513229][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3448.513232][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3448.513236][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3448.513240][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3448.513247][ C2] ksys_write (fs/read_write.c:738) 
[ 3448.513251][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3448.513254][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3448.513262][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3448.513267][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3448.513272][    C2] RIP: 0033:0x7f471c970337
[ 3448.513279][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3448.513282][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3448.513286][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3448.513288][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3448.513290][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3448.513292][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3448.513294][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3470.749952][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3470.750152][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 3470.750329][    C2] NMI backtrace for cpu 2
| [ 3470.750352][    C2] Tainted: [L]=SOFTLOCKUP
[ 3470.750354][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3470.750357][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 3470.750369][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 3470.750373][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 3470.750377][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 3470.750380][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 3470.750382][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 3470.750384][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 3470.750386][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 3470.750388][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3470.750391][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3470.750395][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3470.750397][    C2] PKRU: 55555554
[ 3470.750398][    C2] Call Trace:
[ 3470.750403][    C2]  <IRQ>
[ 3470.750405][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 3470.750417][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 3470.750427][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 3470.750434][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 3470.750441][    C2]  </IRQ>
[ 3470.750442][    C2]  <TASK>
[ 3470.750445][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 3470.750451][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3470.750457][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3470.750460][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3470.750462][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3470.750464][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3470.750467][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3470.750468][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3470.750470][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3470.750474][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3470.750481][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3470.750488][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3470.750493][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3470.750495][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3470.750501][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3470.750509][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3470.750513][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3470.750519][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3470.750522][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3470.750525][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3470.750530][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3470.750536][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3470.750541][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3470.750549][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3470.750557][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3470.750560][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3470.750563][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3470.750566][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3470.750569][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3470.750576][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3470.750580][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3470.750588][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3470.750592][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3470.750596][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3470.750603][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3470.750607][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3470.750613][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3470.750619][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3470.750625][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3470.750633][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3470.750638][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3470.750641][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3470.750645][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3470.750649][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3470.750656][ C2] ksys_write (fs/read_write.c:738) 
[ 3470.750660][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3470.750662][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3470.750670][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3470.750673][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3470.750677][    C2] RIP: 0033:0x7f471c970337
[ 3470.750683][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3470.750686][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3470.750689][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3470.750691][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3470.750694][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3470.750696][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3470.750698][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3496.512993][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3496.512997][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3496.513005][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3496.513020][    C2] Tainted: [L]=SOFTLOCKUP
[ 3496.513022][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3496.513024][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3496.513030][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3496.513034][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3496.513037][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3496.513040][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3496.513042][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3496.513044][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3496.513046][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3496.513049][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3496.513051][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3496.513055][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3496.513057][    C2] PKRU: 55555554
[ 3496.513059][    C2] Call Trace:
[ 3496.513063][    C2]  <TASK>
[ 3496.513069][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3496.513077][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3496.513084][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3496.513087][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3496.513092][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3496.513097][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3496.513102][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3496.513109][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3496.513112][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3496.513114][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3496.513119][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3496.513125][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3496.513131][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3496.513139][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3496.513147][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3496.513150][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3496.513153][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3496.513156][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3496.513159][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3496.513166][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3496.513171][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3496.513178][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3496.513183][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3496.513187][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3496.513194][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3496.513198][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3496.513205][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3496.513211][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3496.513218][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3496.513226][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3496.513230][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3496.513233][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3496.513237][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3496.513241][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3496.513249][ C2] ksys_write (fs/read_write.c:738) 
[ 3496.513253][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3496.513255][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3496.513264][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3496.513269][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3496.513274][    C2] RIP: 0033:0x7f471c970337
[ 3496.513281][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3496.513284][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3496.513287][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3496.513289][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3496.513291][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3496.513293][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3496.513295][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3498.565323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3498.565826][    C2] rcu: 2-....: (1273036 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=335029
| [ 3498.566245][    C2] rcu: (t=1274048 jiffies g=1286133 q=24522 ncpus=4)
| [ 3498.566508][    C2] Tainted: [L]=SOFTLOCKUP
[ 3498.566510][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3498.566513][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3498.566526][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 3498.566529][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3498.566533][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3498.566536][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3498.566538][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3498.566540][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3498.566542][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3498.566544][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3498.566547][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3498.566550][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3498.566552][    C2] PKRU: 55555554
[ 3498.566553][    C2] Call Trace:
[ 3498.566555][    C2]  <TASK>
[ 3498.566557][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3498.566565][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3498.566571][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3498.566573][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3498.566578][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3498.566587][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3498.566590][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3498.566597][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3498.566599][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3498.566602][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3498.566607][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3498.566613][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3498.566618][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3498.566627][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3498.566635][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3498.566638][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3498.566641][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3498.566643][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3498.566647][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3498.566654][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3498.566657][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3498.566665][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3498.566669][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3498.566672][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3498.566679][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3498.566683][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3498.566689][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3498.566695][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3498.566701][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3498.566709][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3498.566713][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3498.566716][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3498.566720][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3498.566723][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3498.566731][ C2] ksys_write (fs/read_write.c:738) 
[ 3498.566734][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3498.566736][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3498.566745][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3498.566749][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3498.566753][    C2] RIP: 0033:0x7f471c970337
[ 3498.566759][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3498.566762][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3498.566765][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3498.566767][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3498.566770][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3498.566772][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3498.566774][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3524.512986][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3524.512990][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3524.512998][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3524.513015][    C2] Tainted: [L]=SOFTLOCKUP
[ 3524.513017][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3524.513020][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3524.513026][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3524.513030][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3524.513033][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3524.513035][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3524.513037][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3524.513039][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3524.513041][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3524.513044][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3524.513047][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3524.513051][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3524.513053][    C2] PKRU: 55555554
[ 3524.513054][    C2] Call Trace:
[ 3524.513059][    C2]  <TASK>
[ 3524.513064][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3524.513072][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3524.513080][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3524.513083][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3524.513088][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3524.513093][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3524.513097][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3524.513104][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3524.513107][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3524.513110][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3524.513115][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3524.513121][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3524.513126][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3524.513135][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3524.513143][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3524.513146][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3524.513149][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3524.513152][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3524.513155][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3524.513162][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3524.513166][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3524.513174][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3524.513177][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3524.513181][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3524.513189][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3524.513193][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3524.513200][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3524.513206][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3524.513213][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3524.513221][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3524.513226][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3524.513228][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3524.513233][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3524.513237][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3524.513244][ C2] ksys_write (fs/read_write.c:738) 
[ 3524.513248][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3524.513251][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3524.513259][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3524.513265][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3524.513270][    C2] RIP: 0033:0x7f471c970337
[ 3524.513276][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3524.513279][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3524.513282][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3524.513284][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3524.513287][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3524.513289][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3524.513291][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3552.512984][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3552.512989][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3552.512997][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3552.513012][    C2] Tainted: [L]=SOFTLOCKUP
[ 3552.513014][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3552.513017][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:31) 
[ 3552.513027][ C2] Code: 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
   0:	41 5c                	pop    %r12
   2:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fb2
   7:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
  2a:*	89 f6                	mov    %esi,%esi		<-- trapping instruction
  2c:	31 d2                	xor    %edx,%edx
  2e:	e9 4f f0 ff ff       	jmp    0xfffffffffffff082
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 f6                	mov    %esi,%esi
   2:	31 d2                	xor    %edx,%edx
   4:	e9 4f f0 ff ff       	jmp    0xfffffffffffff058
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 3552.513030][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 3552.513034][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3552.513036][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3552.513038][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3552.513040][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3552.513042][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3552.513044][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3552.513047][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3552.513051][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3552.513053][    C2] PKRU: 55555554
[ 3552.513054][    C2] Call Trace:
[ 3552.513059][    C2]  <TASK>
[ 3552.513061][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3552.513070][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3552.513077][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3552.513083][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3552.513086][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3552.513092][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3552.513097][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3552.513101][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3552.513107][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3552.513110][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3552.513113][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3552.513118][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3552.513124][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3552.513129][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3552.513139][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3552.513147][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3552.513149][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3552.513153][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3552.513155][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3552.513158][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3552.513166][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3552.513170][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3552.513178][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3552.513182][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3552.513186][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3552.513194][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3552.513199][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3552.513205][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3552.513211][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3552.513218][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3552.513226][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3552.513230][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3552.513232][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3552.513236][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3552.513240][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3552.513248][ C2] ksys_write (fs/read_write.c:738) 
[ 3552.513252][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3552.513254][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3552.513263][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3552.513268][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3552.513273][    C2] RIP: 0033:0x7f471c970337
[ 3552.513280][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3552.513283][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3552.513286][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3552.513288][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3552.513290][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3552.513292][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3552.513294][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3552.513288][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
| [ 3552.513290][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
| [ 3552.513292][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
| [ 3552.513294][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3552.513301][    C2]  </TASK>
[ 3564.957394][   T44] INFO: task mptcp_connect:16951 blocked for more than 1228 seconds.
[ 3564.957778][   T44]       Tainted: G             L      6.16.0-rc6-virtme #1
[ 3564.958012][   T44]       Blocked by coredump.
[ 3564.958178][   T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 3564.958528][   T44] task:mptcp_connect   state:D stack:26032 pid:16951 tgid:16951 ppid:16948  task_flags:0x40010c flags:0x00004002
[ 3564.958886][   T44] Call Trace:
[ 3564.959010][   T44]  <TASK>
[ 3564.959176][ T44] __schedule (kernel/sched/core.c:5397 kernel/sched/core.c:6786) 
[ 3564.959361][ T44] ? try_to_wake_up (kernel/sched/core.c:4014 kernel/sched/core.c:4343) 
[ 3564.959538][ T44] ? __pfx___schedule (kernel/sched/core.c:6663) 
[ 3564.959699][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3564.959938][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3564.960098][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3564.960260][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3564.960456][ T44] ? schedule (kernel/sched/core.c:6845 kernel/sched/core.c:6878) 
[ 3564.960586][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3564.960823][ T44] schedule (kernel/sched/core.c:6865 kernel/sched/core.c:6879) 
[ 3564.960953][ T44] synchronize_rcu_expedited (kernel/rcu/rcu.h:156 kernel/rcu/tree_exp.h:67 kernel/rcu/tree_exp.h:274 kernel/rcu/tree_exp.h:1013) 
[ 3564.961115][ T44] ? __pfx_synchronize_rcu_expedited (kernel/rcu/tree_exp.h:962) 
[ 3564.961420][ T44] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383) 
[ 3564.961620][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3564.961786][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3564.961944][ T44] ? __pfx_wait_rcu_exp_gp (kernel/rcu/tree_exp.h:488) 
[ 3564.962185][ T44] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3564.962360][ T44] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3564.962522][ T44] namespace_unlock (fs/namespace.c:1804) 
[ 3564.962684][ T44] ? umount_tree (./include/linux/list.h:1024 fs/namespace.c:1909) 
[ 3564.962932][ T44] ? __pfx_namespace_unlock (fs/namespace.c:1775) 
[ 3564.963095][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3564.963257][ T44] ? __pfx_umount_tree (fs/namespace.c:1857) 
[ 3564.963423][ T44] ? put_mnt_ns (fs/namespace.c:6282 fs/namespace.c:6274) 
[ 3564.963545][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3564.963800][ T44] put_mnt_ns (fs/namespace.c:6283 fs/namespace.c:6274) 
[ 3564.963926][ T44] free_nsproxy (kernel/nsproxy.c:189) 
[ 3564.964088][ T44] do_exit (./include/linux/task_work.h:40 kernel/exit.c:964) 
[ 3564.964213][ T44] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3564.964376][ T44] ? __pfx_do_exit (kernel/exit.c:897) 
[ 3564.964535][ T44] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3564.964695][ T44] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3564.964854][ T44] do_group_exit (kernel/exit.c:1086) 
[ 3564.965109][ T44] __x64_sys_exit_group (kernel/exit.c:1114) 
[ 3564.965280][ T44] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 3564.965447][ T44] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3564.965608][ T44] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3564.965890][   T44] RIP: 0033:0x7f1e66bbcadd
[ 3564.966060][   T44] RSP: 002b:00007ffe10f0a388 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 3564.966301][   T44] RAX: ffffffffffffffda RBX: 00007f1e66cd89c0 RCX: 00007f1e66bbcadd
[ 3564.966636][   T44] RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
[ 3564.966876][   T44] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000028
[ 3564.967118][   T44] R10: 00007ffe10f0a210 R11: 0000000000000246 R12: 00007f1e66cd89c0
[ 3564.967448][   T44] R13: 00007f1e66cddf20 R14: 0000000000000001 R15: 00007f1e66cddf08
| [ 3569.053882][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3569.054094][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 3569.054274][    C2] NMI backtrace for cpu 2
| [ 3569.054296][    C2] Tainted: [L]=SOFTLOCKUP
[ 3569.054298][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3569.054300][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3569.054314][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3569.054319][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3569.054323][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3569.054326][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3569.054328][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3569.054330][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3569.054332][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3569.054335][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3569.054337][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3569.054341][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3569.054343][    C2] PKRU: 55555554
[ 3569.054345][    C2] Call Trace:
[ 3569.054348][    C2]  <TASK>
[ 3569.054353][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3569.054361][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3569.054368][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3569.054370][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3569.054375][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3569.054383][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3569.054388][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3569.054394][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3569.054397][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3569.054400][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3569.054405][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3569.054411][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3569.054417][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3569.054425][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3569.054433][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3569.054436][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3569.054439][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3569.054442][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3569.054445][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3569.054452][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3569.054456][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3569.054464][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3569.054468][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3569.054472][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3569.054479][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3569.054484][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3569.054491][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3569.054497][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3569.054504][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3569.054512][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3569.054516][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3569.054518][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3569.054522][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3569.054526][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3569.054534][ C2] ksys_write (fs/read_write.c:738) 
[ 3569.054537][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3569.054540][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3569.054548][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3569.054553][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3569.054557][    C2] RIP: 0033:0x7f471c970337
[ 3569.054563][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3569.054566][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3569.054569][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3569.054572][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3569.054574][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3569.054576][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3569.054578][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3576.568323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3576.568659][    C2] rcu: 2-....: (1350973 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=373747
| [ 3576.569061][    C2] rcu: (t=1352051 jiffies g=1286133 q=26143 ncpus=4)
| [ 3576.569445][    C2] Tainted: [L]=SOFTLOCKUP
[ 3576.569446][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3576.569449][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3576.569463][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3576.569467][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3576.569471][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3576.569473][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3576.569475][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3576.569478][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3576.569480][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3576.569482][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3576.569485][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3576.569489][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3576.569491][    C2] PKRU: 55555554
[ 3576.569492][    C2] Call Trace:
[ 3576.569494][    C2]  <TASK>
[ 3576.569496][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3576.569504][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3576.569510][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3576.569513][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3576.569517][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3576.569526][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3576.569529][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3576.569536][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3576.569538][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3576.569541][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3576.569547][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3576.569553][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3576.569558][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3576.569567][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3576.569575][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3576.569578][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3576.569581][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3576.569584][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3576.569587][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3576.569594][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3576.569598][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3576.569605][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3576.569610][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3576.569614][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3576.569621][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3576.569625][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3576.569631][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3576.569636][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3576.569643][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3576.569651][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3576.569655][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3576.569658][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3576.569662][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3576.569665][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3576.569673][ C2] ksys_write (fs/read_write.c:738) 
[ 3576.569676][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3576.569679][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3576.569687][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3576.569691][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3576.569695][    C2] RIP: 0033:0x7f471c970337
[ 3576.569700][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3576.569703][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3576.569706][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3576.569709][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3576.569710][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3576.569712][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3576.569714][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3604.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3604.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3604.512994][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3604.513011][    C2] Tainted: [L]=SOFTLOCKUP
[ 3604.513013][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3604.513016][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3604.513022][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3604.513025][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3604.513029][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3604.513031][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3604.513033][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3604.513035][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3604.513037][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3604.513040][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3604.513042][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3604.513046][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3604.513048][    C2] PKRU: 55555554
[ 3604.513050][    C2] Call Trace:
[ 3604.513054][    C2]  <TASK>
[ 3604.513058][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3604.513066][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3604.513073][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3604.513076][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3604.513080][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3604.513085][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3604.513090][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3604.513096][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3604.513099][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3604.513102][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3604.513107][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3604.513113][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3604.513119][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3604.513128][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3604.513136][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3604.513139][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3604.513142][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3604.513145][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3604.513148][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3604.513155][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3604.513159][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3604.513167][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3604.513171][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3604.513175][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3604.513182][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3604.513187][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3604.513194][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3604.513199][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3604.513206][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3604.513215][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3604.513219][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3604.513222][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3604.513226][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3604.513230][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3604.513237][ C2] ksys_write (fs/read_write.c:738) 
[ 3604.513241][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3604.513244][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3604.513253][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3604.513258][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3604.513263][    C2] RIP: 0033:0x7f471c970337
[ 3604.513269][ C2] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 3604.513272][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3604.513275][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3604.513278][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3604.513280][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3604.513282][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3604.513284][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3632.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3632.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3632.512994][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3632.513010][    C2] Tainted: [L]=SOFTLOCKUP
[ 3632.513012][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3632.513015][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3632.513021][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3632.513024][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3632.513028][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3632.513030][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3632.513032][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3632.513034][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3632.513036][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3632.513038][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3632.513041][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3632.513045][    C2] CR2: 00007ffc12f1b468 CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3632.513047][    C2] PKRU: 55555554
[ 3632.513048][    C2] Call Trace:
[ 3632.513053][    C2]  <TASK>
[ 3632.513059][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3632.513067][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3632.513074][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3632.513076][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3632.513081][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3632.513086][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3632.513090][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3632.513097][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3632.513100][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3632.513103][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3632.513108][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3632.513114][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3632.513120][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3632.513129][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3632.513136][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3632.513139][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3632.513143][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3632.513145][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3632.513148][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3632.513156][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3632.513160][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3632.513168][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3632.513172][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3632.513176][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3632.513183][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3632.513187][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3632.513194][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3632.513199][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3632.513206][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3632.513214][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3632.513218][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3632.513221][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3632.513225][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3632.513229][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3632.513237][ C2] ksys_write (fs/read_write.c:738) 
[ 3632.513241][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3632.513244][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3632.513252][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3632.513257][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3632.513262][    C2] RIP: 0033:0x7f471c970337
[ 3632.513287][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3632.513289][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3632.513292][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3632.513294][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3632.513296][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3632.513299][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3632.513301][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3654.571323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3654.571736][    C2] rcu: 2-....: (1428926 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=412538
| [ 3654.572237][    C2] rcu: (t=1430054 jiffies g=1286133 q=28941 ncpus=4)
| [ 3654.572482][    C2] Tainted: [L]=SOFTLOCKUP
[ 3654.572484][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3654.572487][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3654.572501][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3654.572505][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3654.572509][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3654.572511][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3654.572513][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3654.572515][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3654.572517][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3654.572519][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3654.572522][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3654.572526][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3654.572528][    C2] PKRU: 55555554
[ 3654.572529][    C2] Call Trace:
[ 3654.572530][    C2]  <TASK>
[ 3654.572532][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3654.572541][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3654.572547][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3654.572550][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3654.572555][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3654.572564][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3654.572567][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3654.572574][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3654.572576][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3654.572579][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3654.572584][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3654.572590][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3654.572595][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3654.572604][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3654.572612][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3654.572615][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3654.572618][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3654.572621][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3654.572624][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3654.572631][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3654.572634][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3654.572641][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3654.572645][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3654.572649][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3654.572656][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3654.572660][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3654.572666][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3654.572672][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3654.572678][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3654.572686][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3654.572689][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3654.572692][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3654.572696][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3654.572700][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3654.572707][ C2] ksys_write (fs/read_write.c:738) 
[ 3654.572711][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3654.572713][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3654.572721][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3654.572726][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3654.572730][    C2] RIP: 0033:0x7f471c970337
[ 3654.572741][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3654.572743][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3654.572746][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3654.572749][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3654.572751][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3654.572753][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3654.572755][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3667.357878][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3667.358078][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 3667.358253][    C2] NMI backtrace for cpu 2
| [ 3667.358274][    C2] Tainted: [L]=SOFTLOCKUP
[ 3667.358276][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3667.358278][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 3667.358290][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 3667.358293][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 3667.358298][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 3667.358300][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 3667.358302][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 3667.358305][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 3667.358307][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 3667.358309][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3667.358311][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3667.358316][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3667.358318][    C2] PKRU: 55555554
[ 3667.358320][    C2] Call Trace:
[ 3667.358323][    C2]  <IRQ>
[ 3667.358324][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 3667.358334][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 3667.358343][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 3667.358351][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 3667.358358][    C2]  </IRQ>
[ 3667.358359][    C2]  <TASK>
[ 3667.358361][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 3667.358366][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3667.358373][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3667.358376][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3667.358378][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3667.358380][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3667.358382][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3667.358384][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3667.358386][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3667.358390][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3667.358397][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3667.358404][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3667.358409][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3667.358412][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3667.358416][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3667.358425][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3667.358429][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3667.358435][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3667.358438][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3667.358441][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3667.358446][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3667.358452][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3667.358458][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3667.358466][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3667.358474][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3667.358477][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3667.358480][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3667.358482][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3667.358485][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3667.358492][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3667.358496][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3667.358504][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3667.358508][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3667.358512][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3667.358519][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3667.358523][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3667.358529][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3667.358535][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3667.358541][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3667.358549][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3667.358553][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3667.358555][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3667.358559][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3667.358563][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3667.358570][ C2] ksys_write (fs/read_write.c:738) 
[ 3667.358574][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3667.358577][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3667.358585][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3667.358588][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3667.358591][    C2] RIP: 0033:0x7f471c970337
[ 3667.358601][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3667.358603][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3667.358606][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3667.358608][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3667.358611][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3667.358613][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3667.358614][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3692.512987][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3692.512992][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3692.513000][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3692.513016][    C2] Tainted: [L]=SOFTLOCKUP
[ 3692.513018][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3692.513021][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3692.513027][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3692.513030][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3692.513034][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3692.513036][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3692.513038][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3692.513040][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3692.513042][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3692.513045][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3692.513047][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3692.513052][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3692.513054][    C2] PKRU: 55555554
[ 3692.513055][    C2] Call Trace:
[ 3692.513060][    C2]  <TASK>
[ 3692.513066][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3692.513074][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3692.513081][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3692.513084][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3692.513089][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3692.513094][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3692.513098][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3692.513105][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3692.513108][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3692.513112][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3692.513116][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3692.513123][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3692.513129][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3692.513138][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3692.513146][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3692.513149][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3692.513152][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3692.513155][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3692.513158][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3692.513166][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3692.513170][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3692.513178][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3692.513182][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3692.513186][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3692.513194][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3692.513198][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3692.513205][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3692.513210][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3692.513217][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3692.513226][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3692.513230][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3692.513233][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3692.513237][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3692.513241][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3692.513249][ C2] ksys_write (fs/read_write.c:738) 
[ 3692.513252][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3692.513255][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3692.513264][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3692.513269][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3692.513274][    C2] RIP: 0033:0x7f471c970337
[ 3692.513286][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3692.513287][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3692.513291][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3692.513293][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3692.513296][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3692.513298][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3692.513300][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3720.512979][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3720.512984][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3720.512993][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3720.513007][    C2] Tainted: [L]=SOFTLOCKUP
[ 3720.513009][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3720.513011][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3720.513017][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3720.513020][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3720.513023][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3720.513025][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3720.513028][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3720.513029][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3720.513031][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3720.513034][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3720.513036][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3720.513040][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3720.513042][    C2] PKRU: 55555554
[ 3720.513043][    C2] Call Trace:
[ 3720.513048][    C2]  <TASK>
[ 3720.513052][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3720.513060][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3720.513068][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3720.513071][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3720.513076][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3720.513081][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3720.513086][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3720.513093][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3720.513095][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3720.513098][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3720.513103][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3720.513109][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3720.513114][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3720.513124][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3720.513132][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3720.513135][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3720.513138][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3720.513141][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3720.513143][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3720.513151][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3720.513155][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3720.513163][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3720.513167][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3720.513171][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3720.513179][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3720.513183][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3720.513190][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3720.513196][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3720.513203][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3720.513212][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3720.513216][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3720.513218][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3720.513222][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3720.513226][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3720.513234][ C2] ksys_write (fs/read_write.c:738) 
[ 3720.513238][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3720.513241][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3720.513249][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3720.513255][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3720.513259][    C2] RIP: 0033:0x7f471c970337
[ 3720.513269][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3720.513271][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3720.513274][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3720.513277][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3720.513279][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3720.513280][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3720.513282][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3732.574322][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3732.574675][    C2] rcu: 2-....: (1506862 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=451106
| [ 3732.575207][    C2] rcu: (t=1508057 jiffies g=1286133 q=30367 ncpus=4)
| [ 3732.575466][    C2] Tainted: [L]=SOFTLOCKUP
[ 3732.575468][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3732.575470][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3732.575479][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3732.575482][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3732.575487][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3732.575489][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3732.575491][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3732.575493][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3732.575495][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3732.575497][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3732.575500][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3732.575504][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3732.575506][    C2] PKRU: 55555554
[ 3732.575508][    C2] Call Trace:
[ 3732.575509][    C2]  <TASK>
[ 3732.575511][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3732.575519][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3732.575524][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3732.575526][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3732.575530][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3732.575537][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3732.575541][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3732.575547][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3732.575550][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3732.575553][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3732.575558][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3732.575563][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3732.575568][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3732.575575][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3732.575583][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3732.575585][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3732.575589][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3732.575591][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3732.575594][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3732.575600][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3732.575604][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3732.575611][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3732.575615][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3732.575619][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3732.575624][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3732.575628][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3732.575633][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3732.575638][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3732.575644][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3732.575651][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3732.575654][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3732.575657][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3732.575660][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3732.575664][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3732.575672][ C2] ksys_write (fs/read_write.c:738) 
[ 3732.575675][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3732.575677][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3732.575684][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3732.575688][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3732.575691][    C2] RIP: 0033:0x7f471c970337
[ 3732.575699][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3732.575701][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3732.575704][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3732.575706][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3732.575708][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3732.575710][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3732.575712][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3760.512972][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3760.512977][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3760.512983][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3760.512997][    C2] Tainted: [L]=SOFTLOCKUP
[ 3760.512998][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3760.513001][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3760.513006][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3760.513009][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3760.513012][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3760.513014][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3760.513016][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3760.513018][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3760.513020][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3760.513022][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3760.513025][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3760.513029][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3760.513031][    C2] PKRU: 55555554
[ 3760.513032][    C2] Call Trace:
[ 3760.513036][    C2]  <TASK>
[ 3760.513040][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3760.513048][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3760.513054][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3760.513057][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3760.513060][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3760.513065][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3760.513069][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3760.513076][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3760.513079][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3760.513081][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3760.513086][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3760.513093][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3760.513098][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3760.513105][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3760.513113][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3760.513115][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3760.513118][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3760.513121][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3760.513124][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3760.513130][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3760.513133][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3760.513141][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3760.513145][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3760.513149][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3760.513155][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3760.513159][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3760.513164][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3760.513168][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3760.513175][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3760.513182][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3760.513186][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3760.513188][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3760.513192][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3760.513196][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3760.513203][ C2] ksys_write (fs/read_write.c:738) 
[ 3760.513206][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3760.513209][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3760.513216][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3760.513220][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3760.513225][    C2] RIP: 0033:0x7f471c970337
[ 3760.513233][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3760.513235][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3760.513238][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3760.513240][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3760.513242][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3760.513244][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3760.513246][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3765.661846][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3765.662045][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 3765.662298][    C2] NMI backtrace for cpu 2
| [ 3765.662316][    C2] Tainted: [L]=SOFTLOCKUP
[ 3765.662318][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3765.662320][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3765.662330][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3765.662333][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3765.662337][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3765.662340][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3765.662342][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3765.662344][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3765.662346][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3765.662348][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3765.662351][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3765.662355][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3765.662357][    C2] PKRU: 55555554
[ 3765.662358][    C2] Call Trace:
[ 3765.662361][    C2]  <TASK>
[ 3765.662365][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3765.662373][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3765.662378][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3765.662381][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3765.662384][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3765.662391][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3765.662396][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3765.662402][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3765.662405][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3765.662407][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3765.662412][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3765.662418][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3765.662423][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3765.662431][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3765.662438][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3765.662441][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3765.662444][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3765.662447][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3765.662450][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3765.662456][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3765.662460][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3765.662468][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3765.662472][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3765.662476][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3765.662481][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3765.662485][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3765.662491][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3765.662495][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3765.662502][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3765.662508][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3765.662512][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3765.662515][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3765.662519][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3765.662522][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3765.662529][ C2] ksys_write (fs/read_write.c:738) 
[ 3765.662533][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3765.662535][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3765.662542][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3765.662546][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3765.662550][    C2] RIP: 0033:0x7f471c970337
[ 3765.662559][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3765.662561][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3765.662564][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3765.662566][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3765.662568][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3765.662570][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3765.662572][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3792.512974][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3792.512978][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3792.512984][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3792.512998][    C2] Tainted: [L]=SOFTLOCKUP
[ 3792.513000][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3792.513003][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3792.513008][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3792.513011][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3792.513014][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3792.513016][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3792.513018][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3792.513020][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3792.513022][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3792.513024][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3792.513027][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3792.513030][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3792.513033][    C2] PKRU: 55555554
[ 3792.513034][    C2] Call Trace:
[ 3792.513038][    C2]  <TASK>
[ 3792.513042][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3792.513050][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3792.513056][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3792.513058][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3792.513063][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3792.513067][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3792.513072][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3792.513078][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3792.513081][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3792.513084][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3792.513089][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3792.513095][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3792.513100][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3792.513107][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3792.513115][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3792.513117][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3792.513121][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3792.513123][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3792.513126][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3792.513133][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3792.513136][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3792.513144][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3792.513148][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3792.513152][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3792.513158][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3792.513162][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3792.513167][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3792.513172][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3792.513179][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3792.513185][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3792.513189][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3792.513192][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3792.513195][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3792.513199][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3792.513207][ C2] ksys_write (fs/read_write.c:738) 
[ 3792.513215][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3792.513219][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3792.513230][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3792.513235][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3792.513241][    C2] RIP: 0033:0x7f471c970337
[ 3792.513251][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3792.513254][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3792.513259][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3792.513262][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3792.513264][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3792.513267][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3792.513270][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3810.577323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3810.577729][    C2] rcu: 2-....: (1584798 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=490020
| [ 3810.578128][    C2] rcu: (t=1586060 jiffies g=1286133 q=31712 ncpus=4)
| [ 3810.578517][    C2] Tainted: [L]=SOFTLOCKUP
[ 3810.578519][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3810.578521][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3810.578531][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3810.578535][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3810.578538][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3810.578540][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3810.578542][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3810.578544][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3810.578546][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3810.578548][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3810.578551][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3810.578554][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3810.578556][    C2] PKRU: 55555554
[ 3810.578558][    C2] Call Trace:
[ 3810.578559][    C2]  <TASK>
[ 3810.578561][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3810.578569][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3810.578574][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3810.578577][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3810.578581][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3810.578588][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3810.578592][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3810.578598][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3810.578600][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3810.578603][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3810.578608][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3810.578614][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3810.578619][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3810.578627][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3810.578634][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3810.578636][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3810.578639][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3810.578642][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3810.578645][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3810.578651][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3810.578655][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3810.578662][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3810.578666][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3810.578670][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3810.578676][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3810.578680][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3810.578684][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3810.578689][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3810.578696][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3810.578702][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3810.578706][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3810.578708][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3810.578712][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3810.578715][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3810.578723][ C2] ksys_write (fs/read_write.c:738) 
[ 3810.578726][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3810.578729][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3810.578736][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3810.578739][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3810.578743][    C2] RIP: 0033:0x7f471c970337
[ 3810.578751][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3810.578753][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3810.578756][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3810.578758][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3810.578760][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3810.578761][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3810.578763][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3836.512974][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3836.512979][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3836.512985][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3836.512998][    C2] Tainted: [L]=SOFTLOCKUP
[ 3836.513000][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3836.513003][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3836.513008][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3836.513011][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3836.513014][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3836.513016][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3836.513018][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3836.513020][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3836.513022][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3836.513024][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3836.513027][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3836.513031][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3836.513033][    C2] PKRU: 55555554
[ 3836.513034][    C2] Call Trace:
[ 3836.513038][    C2]  <TASK>
[ 3836.513043][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3836.513051][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3836.513056][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3836.513059][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3836.513063][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3836.513067][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3836.513072][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3836.513079][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3836.513081][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3836.513084][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3836.513089][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3836.513095][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3836.513100][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3836.513108][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3836.513115][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3836.513118][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3836.513121][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3836.513123][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3836.513126][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3836.513132][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3836.513136][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3836.513144][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3836.513148][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3836.513152][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3836.513157][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3836.513162][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3836.513167][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3836.513172][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3836.513179][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3836.513185][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3836.513190][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3836.513192][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3836.513196][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3836.513200][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3836.513207][ C2] ksys_write (fs/read_write.c:738) 
[ 3836.513211][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3836.513213][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3836.513220][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3836.513224][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3836.513229][    C2] RIP: 0033:0x7f471c970337
[ 3836.513238][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3836.513239][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3836.513242][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3836.513244][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3836.513246][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3836.513248][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3836.513250][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3863.965883][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3863.966121][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 3863.966397][    C2] NMI backtrace for cpu 2
| [ 3863.966414][    C2] Tainted: [L]=SOFTLOCKUP
[ 3863.966416][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3863.966418][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3863.966428][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3863.966431][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3863.966434][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3863.966437][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3863.966439][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3863.966441][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3863.966443][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3863.966445][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3863.966447][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3863.966451][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3863.966454][    C2] PKRU: 55555554
[ 3863.966455][    C2] Call Trace:
[ 3863.966458][    C2]  <TASK>
[ 3863.966462][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3863.966469][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3863.966476][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3863.966478][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3863.966482][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3863.966489][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3863.966493][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3863.966501][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3863.966503][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3863.966507][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3863.966512][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3863.966517][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3863.966523][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3863.966530][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3863.966537][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3863.966540][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3863.966543][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3863.966547][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3863.966550][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3863.966556][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3863.966560][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3863.966568][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3863.966572][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3863.966576][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3863.966581][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3863.966586][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3863.966591][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3863.966596][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3863.966602][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3863.966609][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3863.966612][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3863.966615][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3863.966619][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3863.966623][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3863.966630][ C2] ksys_write (fs/read_write.c:738) 
[ 3863.966633][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3863.966636][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3863.966643][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3863.966647][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3863.966651][    C2] RIP: 0033:0x7f471c970337
[ 3863.966660][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3863.966661][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3863.966665][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3863.966667][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3863.966668][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3863.966670][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3863.966672][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3888.512973][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3888.512978][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3888.512984][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3888.512997][    C2] Tainted: [L]=SOFTLOCKUP
[ 3888.512999][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3888.513001][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 3888.513010][ C2] Code: 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff <5b> b8 01 00 00 00 5d 41 5c e9 3c fa 1a 02 41 bc 08 00 00 00 45 29
All code
========
   0:	00 74 f2 48          	add    %dh,0x48(%rdx,%rsi,8)
   4:	89 c2                	mov    %eax,%edx
   6:	b8 01 00 00 00       	mov    $0x1,%eax
   b:	48 85 d2             	test   %rdx,%rdx
   e:	0f 84 4c ff ff ff    	je     0xffffffffffffff60
  14:	41 83 e2 07          	and    $0x7,%r10d
  18:	49 39 d1             	cmp    %rdx,%r9
  1b:	0f 85 34 ff ff ff    	jne    0xffffffffffffff55
  21:	45 3a 11             	cmp    (%r9),%r10b
  24:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff55
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	b8 01 00 00 00       	mov    $0x1,%eax
  30:	5d                   	pop    %rbp
  31:	41 5c                	pop    %r12
  33:	e9 3c fa 1a 02       	jmp    0x21afa74
  38:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  3e:	45                   	rex.RB
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	b8 01 00 00 00       	mov    $0x1,%eax
   6:	5d                   	pop    %rbp
   7:	41 5c                	pop    %r12
   9:	e9 3c fa 1a 02       	jmp    0x21afa4a
   e:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  14:	45                   	rex.RB
  15:	29                   	.byte 0x29
[ 3888.513013][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000246
[ 3888.513016][    C2] RAX: ffffed100170bd67 RBX: ffffed100170bd67 RCX: ffffffffa2cd0f13
[ 3888.513019][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3888.513021][    C2] RBP: ffffed100170bd66 R08: 0000000000000000 R09: ffffed100170bd66
[ 3888.513023][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3888.513024][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3888.513027][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3888.513029][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3888.513033][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3888.513035][    C2] PKRU: 55555554
[ 3888.513037][    C2] Call Trace:
[ 3888.513040][    C2]  <TASK>
[ 3888.513044][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3888.513050][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3888.513057][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3888.513062][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3888.513065][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3888.513068][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3888.513073][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3888.513078][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3888.513084][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3888.513087][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3888.513090][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3888.513095][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3888.513101][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3888.513106][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3888.513113][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3888.513121][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3888.513123][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3888.513126][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3888.513129][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3888.513132][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3888.513138][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3888.513142][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3888.513149][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3888.513153][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3888.513157][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3888.513163][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3888.513167][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3888.513172][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3888.513177][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3888.513183][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3888.513189][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3888.513193][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3888.513195][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3888.513199][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3888.513203][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3888.513210][ C2] ksys_write (fs/read_write.c:738) 
[ 3888.513213][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3888.513216][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3888.513223][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3888.513227][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3888.513232][    C2] RIP: 0033:0x7f471c970337
[ 3888.513241][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3888.513242][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3888.513245][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3888.513247][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3888.513249][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3888.513251][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3888.513253][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3888.580320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3888.580728][    C2] rcu: 2-....: (1662733 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=528491
| [ 3888.581284][    C2] rcu: (t=1664063 jiffies g=1286133 q=33060 ncpus=4)
| [ 3888.581559][    C2] Tainted: [L]=SOFTLOCKUP
[ 3888.581561][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3888.581563][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3888.581574][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3888.581577][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3888.581581][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3888.581583][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3888.581584][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3888.581586][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3888.581589][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3888.581591][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3888.581593][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3888.581598][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3888.581600][    C2] PKRU: 55555554
[ 3888.581601][    C2] Call Trace:
[ 3888.581602][    C2]  <TASK>
[ 3888.581605][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3888.581612][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3888.581617][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3888.581621][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3888.581625][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3888.581631][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3888.581635][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3888.581641][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3888.581644][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3888.581647][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3888.581652][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3888.581658][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3888.581663][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3888.581670][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3888.581678][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3888.581680][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3888.581683][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3888.581686][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3888.581689][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3888.581695][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3888.581699][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3888.581706][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3888.581710][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3888.581714][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3888.581719][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3888.581723][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3888.581728][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3888.581732][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3888.581739][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3888.581745][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3888.581748][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3888.581750][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3888.581755][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3888.581758][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3888.581765][ C2] ksys_write (fs/read_write.c:738) 
[ 3888.581769][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3888.581771][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3888.581778][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3888.581782][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3888.581785][    C2] RIP: 0033:0x7f471c970337
[ 3888.581794][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3888.581795][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3888.581798][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3888.581800][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3888.581802][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3888.581804][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3888.581806][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3916.512969][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3916.512973][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3916.512979][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3916.512993][    C2] Tainted: [L]=SOFTLOCKUP
[ 3916.512994][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3916.512996][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3916.513001][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3916.513005][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3916.513008][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3916.513010][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3916.513012][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3916.513014][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3916.513016][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3916.513018][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3916.513021][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3916.513025][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3916.513027][    C2] PKRU: 55555554
[ 3916.513028][    C2] Call Trace:
[ 3916.513031][    C2]  <TASK>
[ 3916.513035][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3916.513043][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3916.513048][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3916.513050][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3916.513054][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3916.513059][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3916.513063][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3916.513070][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3916.513073][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3916.513075][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3916.513080][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3916.513086][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3916.513091][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3916.513098][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3916.513106][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3916.513108][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3916.513112][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3916.513114][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3916.513117][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3916.513123][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3916.513127][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3916.513134][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3916.513138][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3916.513142][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3916.513147][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3916.513151][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3916.513156][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3916.513161][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3916.513168][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3916.513175][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3916.513178][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3916.513181][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3916.513185][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3916.513188][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3916.513196][ C2] ksys_write (fs/read_write.c:738) 
[ 3916.513199][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3916.513202][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3916.513209][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3916.513214][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3916.513218][    C2] RIP: 0033:0x7f471c970337
[ 3916.513226][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3916.513227][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3916.513231][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3916.513233][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3916.513234][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3916.513236][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3916.513238][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3944.512973][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3944.512978][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3944.512984][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3944.512998][    C2] Tainted: [L]=SOFTLOCKUP
[ 3944.513000][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3944.513002][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3944.513007][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3944.513010][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3944.513013][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3944.513016][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3944.513018][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3944.513020][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3944.513022][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3944.513024][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3944.513026][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3944.513030][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3944.513032][    C2] PKRU: 55555554
[ 3944.513033][    C2] Call Trace:
[ 3944.513038][    C2]  <TASK>
[ 3944.513042][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3944.513050][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3944.513055][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3944.513058][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3944.513062][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3944.513067][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3944.513071][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3944.513077][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3944.513080][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3944.513082][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3944.513087][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3944.513093][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3944.513098][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3944.513106][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3944.513113][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3944.513116][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3944.513119][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3944.513122][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3944.513125][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3944.513131][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3944.513134][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3944.513142][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3944.513146][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3944.513150][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3944.513155][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3944.513159][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3944.513165][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3944.513170][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3944.513176][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3944.513183][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3944.513187][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3944.513189][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3944.513193][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3944.513197][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3944.513204][ C2] ksys_write (fs/read_write.c:738) 
[ 3944.513208][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3944.513210][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3944.513217][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3944.513222][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3944.513226][    C2] RIP: 0033:0x7f471c970337
[ 3944.513234][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3944.513236][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3944.513239][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3944.513241][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3944.513243][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3944.513245][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3944.513247][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3962.269910][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3962.270168][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 3962.270339][    C2] NMI backtrace for cpu 2
| [ 3962.270355][    C2] Tainted: [L]=SOFTLOCKUP
[ 3962.270357][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3962.270360][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:171 mm/kasan/generic.c:189) 
[ 3962.270368][ C2] Code: 00 00 e9 bf c5 18 02 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 <48> 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	e9 bf c5 18 02       	jmp    0x218c5c6
   7:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 00 
  12:	0f 1f 40 00          	nopl   0x0(%rax)
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	66 0f 1f 00          	nopw   (%rax)
  2a:*	48 85 f6             	test   %rsi,%rsi		<-- trapping instruction
  2d:	0f 84 5e 01 00 00    	je     0x191
  33:	48 89 f8             	mov    %rdi,%rax
  36:	41 54                	push   %r12
  38:	44 0f b6 c2          	movzbl %dl,%r8d
  3c:	48 01 f0             	add    %rsi,%rax
  3f:	55                   	push   %rbp

Code starting with the faulting instruction
===========================================
   0:	48 85 f6             	test   %rsi,%rsi
   3:	0f 84 5e 01 00 00    	je     0x167
   9:	48 89 f8             	mov    %rdi,%rax
   c:	41 54                	push   %r12
   e:	44 0f b6 c2          	movzbl %dl,%r8d
  12:	48 01 f0             	add    %rsi,%rax
  15:	55                   	push   %rbp
[ 3962.270371][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000246
[ 3962.270375][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3962.270377][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3962.270379][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3962.270381][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3962.270383][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3962.270385][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3962.270388][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3962.270392][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3962.270394][    C2] PKRU: 55555554
[ 3962.270396][    C2] Call Trace:
[ 3962.270398][    C2]  <TASK>
[ 3962.270400][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3962.270410][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3962.270417][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3962.270422][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3962.270425][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3962.270429][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3962.270436][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3962.270440][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3962.270447][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3962.270449][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3962.270452][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3962.270457][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3962.270463][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3962.270468][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3962.270476][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3962.270483][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3962.270486][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3962.270489][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3962.270492][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3962.270495][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3962.270501][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3962.270504][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3962.270512][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3962.270516][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3962.270519][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3962.270525][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3962.270530][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3962.270535][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3962.270539][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3962.270546][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3962.270552][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3962.270556][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3962.270558][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3962.270562][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3962.270566][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3962.270573][ C2] ksys_write (fs/read_write.c:738) 
[ 3962.270577][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3962.270579][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3962.270586][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3962.270591][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3962.270595][    C2] RIP: 0033:0x7f471c970337
[ 3962.270604][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3962.270606][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3962.270610][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3962.270612][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3962.270614][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3962.270616][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3962.270617][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3966.583320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3966.583690][    C2] rcu: 2-....: (1740669 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=567416
| [ 3966.584192][    C2] rcu: (t=1742066 jiffies g=1286133 q=34408 ncpus=4)
| [ 3966.584445][    C2] Tainted: [L]=SOFTLOCKUP
[ 3966.584447][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3966.584450][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3966.584459][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3966.584463][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 3966.584466][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3966.584469][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3966.584471][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3966.584473][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3966.584474][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3966.584476][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3966.584479][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3966.584483][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3966.584485][    C2] PKRU: 55555554
[ 3966.584486][    C2] Call Trace:
[ 3966.584488][    C2]  <TASK>
[ 3966.584490][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3966.584498][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3966.584503][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3966.584505][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3966.584509][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3966.584516][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3966.584520][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3966.584526][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3966.584529][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3966.584532][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3966.584537][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3966.584542][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3966.584548][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3966.584555][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3966.584563][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3966.584565][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3966.584568][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3966.584571][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3966.584574][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3966.584580][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3966.584583][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3966.584591][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3966.584595][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3966.584599][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3966.584604][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3966.584608][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3966.584614][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3966.584618][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3966.584625][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3966.584632][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3966.584635][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3966.584637][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3966.584641][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3966.584645][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3966.584652][ C2] ksys_write (fs/read_write.c:738) 
[ 3966.584655][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3966.584658][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3966.584664][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3966.584669][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3966.584672][    C2] RIP: 0033:0x7f471c970337
[ 3966.584681][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3966.584684][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3966.584687][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3966.584689][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3966.584690][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3966.584692][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3966.584694][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 3992.512973][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 3992.512978][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 3992.512984][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 3992.512997][    C2] Tainted: [L]=SOFTLOCKUP
[ 3992.512998][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3992.513001][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 3992.513008][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 3992.513011][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 3992.513014][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 3992.513017][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 3992.513019][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 3992.513021][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 3992.513022][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 3992.513024][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 3992.513027][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3992.513031][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 3992.513033][    C2] PKRU: 55555554
[ 3992.513034][    C2] Call Trace:
[ 3992.513038][    C2]  <TASK>
[ 3992.513040][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3992.513048][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3992.513055][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3992.513060][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3992.513062][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3992.513067][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3992.513071][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 3992.513076][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 3992.513082][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3992.513085][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 3992.513088][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 3992.513092][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 3992.513098][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 3992.513103][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 3992.513110][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 3992.513118][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3992.513120][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 3992.513123][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3992.513126][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3992.513129][ C2] ? release_sock (net/core/sock.c:3747) 
[ 3992.513135][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 3992.513139][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3992.513146][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 3992.513150][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 3992.513154][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 3992.513159][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 3992.513163][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 3992.513169][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 3992.513174][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 3992.513180][ C2] ? ksys_write (fs/read_write.c:738) 
[ 3992.513186][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 3992.513190][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 3992.513192][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 3992.513196][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 3992.513200][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 3992.513207][ C2] ksys_write (fs/read_write.c:738) 
[ 3992.513211][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 3992.513214][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3992.513221][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3992.513226][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3992.513230][    C2] RIP: 0033:0x7f471c970337
[ 3992.513238][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 3992.513240][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3992.513243][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 3992.513245][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 3992.513247][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 3992.513249][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 3992.513251][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4020.512984][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4020.512988][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4020.512996][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4020.513011][    C2] Tainted: [L]=SOFTLOCKUP
[ 4020.513013][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4020.513016][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:103 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 4020.513025][ C2] Code: 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d 59 01 48 89 da 48 29 ea <48> 83 fa 10 0f 8e c0 00 00 00 41 89 eb 41 83 e3 07 75 7d 48 85 d2
All code
========
   0:	89 fd                	mov    %edi,%ebp
   2:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   9:	fc ff df 
   c:	4d 89 d1             	mov    %r10,%r9
   f:	48 c1 ed 03          	shr    $0x3,%rbp
  13:	49 c1 e9 03          	shr    $0x3,%r9
  17:	48 01 c5             	add    %rax,%rbp
  1a:	49 01 c1             	add    %rax,%r9
  1d:	48 89 e8             	mov    %rbp,%rax
  20:	49 8d 59 01          	lea    0x1(%r9),%rbx
  24:	48 89 da             	mov    %rbx,%rdx
  27:	48 29 ea             	sub    %rbp,%rdx
  2a:*	48 83 fa 10          	cmp    $0x10,%rdx		<-- trapping instruction
  2e:	0f 8e c0 00 00 00    	jle    0xf4
  34:	41 89 eb             	mov    %ebp,%r11d
  37:	41 83 e3 07          	and    $0x7,%r11d
  3b:	75 7d                	jne    0xba
  3d:	48 85 d2             	test   %rdx,%rdx

Code starting with the faulting instruction
===========================================
   0:	48 83 fa 10          	cmp    $0x10,%rdx
   4:	0f 8e c0 00 00 00    	jle    0xca
   a:	41 89 eb             	mov    %ebp,%r11d
   d:	41 83 e3 07          	and    $0x7,%r11d
  11:	75 7d                	jne    0x90
  13:	48 85 d2             	test   %rdx,%rdx
[ 4020.513029][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000202
[ 4020.513033][    C2] RAX: ffffed100170bd66 RBX: ffffed100170bd67 RCX: ffffffffa2cd0f13
[ 4020.513035][    C2] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4020.513037][    C2] RBP: ffffed100170bd66 R08: 0000000000000000 R09: ffffed100170bd66
[ 4020.513040][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4020.513042][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4020.513044][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4020.513047][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4020.513051][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4020.513053][    C2] PKRU: 55555554
[ 4020.513054][    C2] Call Trace:
[ 4020.513059][    C2]  <TASK>
[ 4020.513064][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4020.513071][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4020.513078][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4020.513084][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4020.513088][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4020.513092][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4020.513097][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4020.513102][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4020.513109][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4020.513112][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4020.513115][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4020.513120][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4020.513126][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4020.513132][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4020.513141][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4020.513148][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4020.513151][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4020.513154][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4020.513158][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4020.513160][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4020.513169][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4020.513173][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4020.513181][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4020.513185][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4020.513189][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4020.513196][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4020.513201][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4020.513207][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4020.513213][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4020.513219][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4020.513226][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4020.513231][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4020.513233][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4020.513237][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4020.513241][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4020.513248][ C2] ksys_write (fs/read_write.c:738) 
[ 4020.513252][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4020.513255][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4020.513263][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4020.513268][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4020.513272][    C2] RIP: 0033:0x7f471c970337
[ 4020.513284][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4020.513286][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4020.513289][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4020.513291][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4020.513293][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4020.513295][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4020.513297][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4044.586324][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4044.586883][    C2] rcu: 2-....: (1818623 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=606301
| [ 4044.587296][    C2] rcu: (t=1820069 jiffies g=1286133 q=35437 ncpus=4)
| [ 4044.587553][    C2] Tainted: [L]=SOFTLOCKUP
[ 4044.587555][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4044.587557][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4044.587570][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4044.587574][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4044.587578][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4044.587581][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4044.587583][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4044.587585][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4044.587587][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4044.587589][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4044.587592][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4044.587596][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4044.587598][    C2] PKRU: 55555554
[ 4044.587599][    C2] Call Trace:
[ 4044.587601][    C2]  <TASK>
[ 4044.587603][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4044.587611][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4044.587617][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4044.587620][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4044.587625][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4044.587633][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4044.587636][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4044.587643][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4044.587646][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4044.587649][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4044.587654][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4044.587660][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4044.587665][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4044.587675][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4044.587683][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4044.587686][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4044.587689][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4044.587691][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4044.587694][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4044.587702][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4044.587705][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4044.587712][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4044.587716][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4044.587720][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4044.587727][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4044.587731][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4044.587737][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4044.587742][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4044.587749][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4044.587757][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4044.587760][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4044.587763][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4044.587767][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4044.587771][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4044.587779][ C2] ksys_write (fs/read_write.c:738) 
[ 4044.587782][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4044.587785][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4044.587793][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4044.587797][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4044.587801][    C2] RIP: 0033:0x7f471c970337
[ 4044.587813][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4044.587815][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4044.587818][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4044.587820][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4044.587822][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4044.587824][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4044.587826][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4060.573863][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4060.574135][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 4060.574310][    C2] NMI backtrace for cpu 2
| [ 4060.574335][    C2] Tainted: [L]=SOFTLOCKUP
[ 4060.574337][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4060.574339][ C2] RIP: 0010:note_interrupt (kernel/irq/spurious.c:376) 
[ 4060.574350][ C2] Code: 80 3c 02 00 0f 85 51 03 00 00 48 c7 c0 00 12 a1 a3 49 8b 9f 90 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 <0f> 85 1a 03 00 00 48 8b 05 53 1e 5e 03 48 29 c3 48 83 c3 64 0f 88
All code
========
   0:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   4:	0f 85 51 03 00 00    	jne    0x35b
   a:	48 c7 c0 00 12 a1 a3 	mov    $0xffffffffa3a11200,%rax
  11:	49 8b 9f 90 00 00 00 	mov    0x90(%r15),%rbx
  18:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  1f:	fc ff df 
  22:	48 c1 e8 03          	shr    $0x3,%rax
  26:	80 3c 10 00          	cmpb   $0x0,(%rax,%rdx,1)
  2a:*	0f 85 1a 03 00 00    	jne    0x34a		<-- trapping instruction
  30:	48 8b 05 53 1e 5e 03 	mov    0x35e1e53(%rip),%rax        # 0x35e1e8a
  37:	48 29 c3             	sub    %rax,%rbx
  3a:	48 83 c3 64          	add    $0x64,%rbx
  3e:	0f                   	.byte 0xf
  3f:	88                   	.byte 0x88

Code starting with the faulting instruction
===========================================
   0:	0f 85 1a 03 00 00    	jne    0x320
   6:	48 8b 05 53 1e 5e 03 	mov    0x35e1e53(%rip),%rax        # 0x35e1e60
   d:	48 29 c3             	sub    %rax,%rbx
  10:	48 83 c3 64          	add    $0x64,%rbx
  14:	0f                   	.byte 0xf
  15:	88                   	.byte 0x88
[ 4060.574353][    C2] RSP: 0018:ffffc90000218f18 EFLAGS: 00000046
[ 4060.574358][    C2] RAX: 1ffffffff4742240 RBX: 0000000100396000 RCX: b21a73b73db89644
[ 4060.574361][    C2] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff88800293e490
[ 4060.574363][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff490a2fa
[ 4060.574366][    C2] R10: ffffffffa48517d7 R11: ffffc90000218ff8 R12: ffff88800293e47c
[ 4060.574368][    C2] R13: ffff88800293e4a8 R14: ffff88800293e438 R15: ffff88800293e400
[ 4060.574370][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4060.574372][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4060.574377][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4060.574379][    C2] PKRU: 55555554
[ 4060.574380][    C2] Call Trace:
[ 4060.574388][    C2]  <IRQ>
[ 4060.574393][ C2] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) 
[ 4060.574400][ C2] handle_fasteoi_irq (kernel/irq/chip.c:644 kernel/irq/chip.c:708) 
[ 4060.574406][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 4060.574414][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 4060.574422][    C2]  </IRQ>
[ 4060.574423][    C2]  <TASK>
[ 4060.574425][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 4060.574430][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4060.574437][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 4060.574440][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4060.574442][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4060.574444][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4060.574446][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4060.574448][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4060.574450][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4060.574454][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4060.574460][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4060.574467][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4060.574472][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4060.574475][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4060.574480][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4060.574488][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4060.574492][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4060.574499][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4060.574501][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4060.574504][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4060.574509][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4060.574515][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4060.574521][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4060.574529][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4060.574537][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4060.574540][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4060.574543][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4060.574546][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4060.574548][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4060.574556][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4060.574559][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4060.574566][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4060.574571][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4060.574574][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4060.574581][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4060.574585][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4060.574591][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4060.574597][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4060.574603][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4060.574611][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4060.574615][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4060.574618][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4060.574622][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4060.574625][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4060.574633][ C2] ksys_write (fs/read_write.c:738) 
[ 4060.574636][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4060.574639][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4060.574647][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4060.574650][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4060.574654][    C2] RIP: 0033:0x7f471c970337
[ 4060.574665][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4060.574666][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4060.574670][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4060.574672][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4060.574674][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4060.574676][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4060.574678][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4088.512990][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4088.512995][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4088.513002][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4088.513020][    C2] Tainted: [L]=SOFTLOCKUP
[ 4088.513022][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4088.513024][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4088.513030][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 4088.513034][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4088.513037][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4088.513040][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4088.513042][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4088.513044][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4088.513046][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4088.513048][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4088.513051][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4088.513055][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4088.513057][    C2] PKRU: 55555554
[ 4088.513059][    C2] Call Trace:
[ 4088.513064][    C2]  <TASK>
[ 4088.513070][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4088.513078][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4088.513085][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4088.513088][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4088.513093][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4088.513098][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4088.513102][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4088.513110][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4088.513113][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4088.513115][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4088.513121][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4088.513127][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4088.513132][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4088.513141][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4088.513149][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4088.513152][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4088.513155][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4088.513158][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4088.513161][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4088.513168][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4088.513172][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4088.513180][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4088.513184][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4088.513188][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4088.513196][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4088.513200][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4088.513207][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4088.513213][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4088.513219][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4088.513228][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4088.513232][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4088.513235][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4088.513239][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4088.513243][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4088.513251][ C2] ksys_write (fs/read_write.c:738) 
[ 4088.513255][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4088.513257][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4088.513266][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4088.513271][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4088.513276][    C2] RIP: 0033:0x7f471c970337
[ 4088.513288][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4088.513290][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4088.513294][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4088.513296][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4088.513298][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4088.513300][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4088.513302][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4116.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4116.512988][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4116.512996][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4116.513012][    C2] Tainted: [L]=SOFTLOCKUP
[ 4116.513013][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4116.513016][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4116.513022][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4116.513025][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4116.513028][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4116.513031][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4116.513033][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4116.513035][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4116.513036][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4116.513039][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4116.513041][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4116.513046][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4116.513049][    C2] PKRU: 55555554
[ 4116.513050][    C2] Call Trace:
[ 4116.513054][    C2]  <TASK>
[ 4116.513058][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4116.513066][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4116.513073][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4116.513076][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4116.513081][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4116.513086][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4116.513091][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4116.513097][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4116.513100][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4116.513103][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4116.513107][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4116.513114][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4116.513121][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4116.513133][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4116.513147][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4116.513151][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4116.513157][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4116.513162][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4116.513169][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4116.513178][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4116.513182][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4116.513190][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4116.513193][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4116.513197][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4116.513205][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4116.513209][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4116.513216][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4116.513223][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4116.513230][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4116.513238][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4116.513242][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4116.513245][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4116.513249][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4116.513253][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4116.513260][ C2] ksys_write (fs/read_write.c:738) 
[ 4116.513264][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4116.513266][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4116.513275][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4116.513280][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4116.513285][    C2] RIP: 0033:0x7f471c970337
[ 4116.513296][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4116.513298][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4116.513301][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4116.513303][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4116.513305][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4116.513307][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4116.513309][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4122.589323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4122.589811][    C2] rcu: 2-....: (1896557 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=644227
| [ 4122.590237][    C2] rcu: (t=1898072 jiffies g=1286133 q=36863 ncpus=4)
| [ 4122.590483][    C2] Tainted: [L]=SOFTLOCKUP
[ 4122.590485][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4122.590487][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4122.590497][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4122.590501][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4122.590504][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4122.590507][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4122.590509][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4122.590511][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4122.590513][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4122.590515][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4122.590517][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4122.590521][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4122.590523][    C2] PKRU: 55555554
[ 4122.590524][    C2] Call Trace:
[ 4122.590526][    C2]  <TASK>
[ 4122.590528][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4122.590536][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4122.590541][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4122.590544][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4122.590548][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4122.590555][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4122.590558][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4122.590565][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4122.590568][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4122.590571][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4122.590576][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4122.590582][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4122.590587][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4122.590595][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4122.590602][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4122.590605][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4122.590608][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4122.590611][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4122.590613][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4122.590619][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4122.590623][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4122.590630][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4122.590634][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4122.590637][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4122.590643][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4122.590647][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4122.590652][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4122.590657][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4122.590663][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4122.590670][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4122.590681][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4122.590684][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4122.590687][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4122.590691][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4122.590698][ C2] ksys_write (fs/read_write.c:738) 
[ 4122.590702][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4122.590704][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4122.590711][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4122.590715][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4122.590719][    C2] RIP: 0033:0x7f471c970337
[ 4122.590728][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4122.590729][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4122.590733][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4122.590735][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4122.590736][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4122.590738][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4122.590741][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4148.512972][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4148.512977][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4148.512983][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4148.512997][    C2] Tainted: [L]=SOFTLOCKUP
[ 4148.512998][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4148.513000][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4148.513005][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4148.513009][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4148.513012][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4148.513014][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4148.513016][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4148.513018][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4148.513020][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4148.513022][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4148.513025][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4148.513030][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4148.513032][    C2] PKRU: 55555554
[ 4148.513033][    C2] Call Trace:
[ 4148.513036][    C2]  <TASK>
[ 4148.513041][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4148.513048][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4148.513054][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4148.513057][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4148.513061][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4148.513066][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4148.513070][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4148.513077][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4148.513079][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4148.513082][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4148.513087][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4148.513093][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4148.513098][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4148.513105][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4148.513112][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4148.513115][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4148.513118][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4148.513120][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4148.513123][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4148.513129][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4148.513133][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4148.513141][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4148.513144][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4148.513148][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4148.513154][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4148.513158][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4148.513164][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4148.513168][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4148.513175][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4148.513181][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4148.513185][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4148.513188][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4148.513192][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4148.513195][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4148.513203][ C2] ksys_write (fs/read_write.c:738) 
[ 4148.513206][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4148.513209][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4148.513216][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4148.513220][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4148.513225][    C2] RIP: 0033:0x7f471c970337
[ 4148.513233][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4148.513235][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4148.513238][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4148.513240][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4148.513242][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4148.513244][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4148.513246][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4158.877844][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4158.878097][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 4158.878253][    C2] NMI backtrace for cpu 2
| [ 4158.878268][    C2] Tainted: [L]=SOFTLOCKUP
[ 4158.878270][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4158.878272][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 4158.878282][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 4158.878285][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 4158.878289][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 4158.878291][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 4158.878293][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 4158.878295][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 4158.878297][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 4158.878299][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4158.878301][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4158.878305][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4158.878307][    C2] PKRU: 55555554
[ 4158.878308][    C2] Call Trace:
[ 4158.878310][    C2]  <IRQ>
[ 4158.878312][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 4158.878323][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 4158.878333][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 4158.878341][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 4158.878347][    C2]  </IRQ>
[ 4158.878348][    C2]  <TASK>
[ 4158.878350][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 4158.878354][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 4158.878361][ C2] Code: 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 <48> 01 f0 55 53 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe
All code
========
   0:	0f 1f 40 00          	nopl   0x0(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	48 85 f6             	test   %rsi,%rsi
  1b:	0f 84 5e 01 00 00    	je     0x17f
  21:	48 89 f8             	mov    %rdi,%rax
  24:	41 54                	push   %r12
  26:	44 0f b6 c2          	movzbl %dl,%r8d
  2a:*	48 01 f0             	add    %rsi,%rax		<-- trapping instruction
  2d:	55                   	push   %rbp
  2e:	53                   	push   %rbx
  2f:	72 14                	jb     0x45
  31:	eb 26                	jmp    0x59
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  3d:	ff ff fe 

Code starting with the faulting instruction
===========================================
   0:	48 01 f0             	add    %rsi,%rax
   3:	55                   	push   %rbp
   4:	53                   	push   %rbx
   5:	72 14                	jb     0x1b
   7:	eb 26                	jmp    0x2f
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  13:	ff ff fe 
[ 4158.878364][    C2] RSP: 0018:ffffc9000029f5c0 EFLAGS: 00000202
[ 4158.878366][    C2] RAX: ffff88800b85eb30 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4158.878368][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4158.878370][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4158.878372][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4158.878374][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4158.878378][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4158.878386][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4158.878391][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4158.878397][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4158.878401][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4158.878404][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4158.878408][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4158.878415][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4158.878419][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4158.878426][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4158.878428][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4158.878431][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4158.878436][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4158.878442][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4158.878447][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4158.878453][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4158.878461][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4158.878463][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4158.878466][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4158.878469][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4158.878472][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4158.878478][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4158.878481][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4158.878488][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4158.878492][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4158.878496][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4158.878501][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4158.878505][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4158.878510][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4158.878515][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4158.878522][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4158.878528][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4158.878531][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4158.878534][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4158.878538][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4158.878541][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4158.878548][ C2] ksys_write (fs/read_write.c:738) 
[ 4158.878552][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4158.878554][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4158.878561][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4158.878564][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4158.878567][    C2] RIP: 0033:0x7f471c970337
[ 4158.878575][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4158.878577][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4158.878580][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4158.878582][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4158.878584][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4158.878586][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4158.878588][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4184.512971][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4184.512975][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4184.512981][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4184.512994][    C2] Tainted: [L]=SOFTLOCKUP
[ 4184.512996][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4184.512998][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4184.513002][ C2] Code: ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 <89> 44 24 40 85 c0 0f 85 6e 01 00 00 48 89 ef be 04 00 00 00 e8 60
All code
========
   0:	ff                   	lcall  (bad)
   1:	df 49 01             	fisttps 0x1(%rcx)
   4:	c6 41 83 c5          	movb   $0xc5,-0x7d(%rcx)
   8:	03 be 04 00 00 00    	add    0x4(%rsi),%edi
   e:	48 89 ef             	mov    %rbp,%rdi
  11:	e8 5d 3f e5 fd       	call   0xfffffffffde53f73
  16:	41 0f b6 06          	movzbl (%r14),%eax
  1a:	41 38 c5             	cmp    %al,%r13b
  1d:	7c 08                	jl     0x27
  1f:	84 c0                	test   %al,%al
  21:	0f 85 8d 07 00 00    	jne    0x7b4
  27:	8b 45 00             	mov    0x0(%rbp),%eax
  2a:*	89 44 24 40          	mov    %eax,0x40(%rsp)		<-- trapping instruction
  2e:	85 c0                	test   %eax,%eax
  30:	0f 85 6e 01 00 00    	jne    0x1a4
  36:	48 89 ef             	mov    %rbp,%rdi
  39:	be 04 00 00 00       	mov    $0x4,%esi
  3e:	e8                   	.byte 0xe8
  3f:	60                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 44 24 40          	mov    %eax,0x40(%rsp)
   4:	85 c0                	test   %eax,%eax
   6:	0f 85 6e 01 00 00    	jne    0x17a
   c:	48 89 ef             	mov    %rbp,%rdi
   f:	be 04 00 00 00       	mov    $0x4,%esi
  14:	e8                   	.byte 0xe8
  15:	60                   	(bad)
[ 4184.513006][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000246
[ 4184.513008][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4184.513011][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4184.513013][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4184.513015][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4184.513017][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4184.513019][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4184.513021][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4184.513025][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4184.513027][    C2] PKRU: 55555554
[ 4184.513029][    C2] Call Trace:
[ 4184.513032][    C2]  <TASK>
[ 4184.513036][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4184.513044][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4184.513049][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4184.513052][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4184.513056][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4184.513061][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4184.513065][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4184.513072][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4184.513074][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4184.513077][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4184.513082][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4184.513088][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4184.513094][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4184.513101][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4184.513109][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4184.513112][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4184.513115][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4184.513118][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4184.513120][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4184.513126][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4184.513130][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4184.513138][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4184.513142][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4184.513146][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4184.513151][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4184.513155][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4184.513160][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4184.513165][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4184.513172][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4184.513178][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4184.513182][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4184.513184][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4184.513188][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4184.513192][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4184.513199][ C2] ksys_write (fs/read_write.c:738) 
[ 4184.513203][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4184.513205][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4184.513212][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4184.513217][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4184.513221][    C2] RIP: 0033:0x7f471c970337
[ 4184.513229][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4184.513231][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4184.513234][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4184.513236][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4184.513238][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4184.513240][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4184.513241][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4200.592319][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4200.592747][    C2] rcu: 2-....: (1974493 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=683132
| [ 4200.593115][    C2] rcu: (t=1976075 jiffies g=1286133 q=38292 ncpus=4)
| [ 4200.593358][    C2] Tainted: [L]=SOFTLOCKUP
[ 4200.593359][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4200.593362][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4200.593371][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4200.593374][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4200.593378][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4200.593380][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4200.593382][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4200.593384][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4200.593386][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4200.593388][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4200.593391][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4200.593394][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4200.593396][    C2] PKRU: 55555554
[ 4200.593398][    C2] Call Trace:
[ 4200.593399][    C2]  <TASK>
[ 4200.593402][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4200.593409][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4200.593414][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4200.593417][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4200.593421][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4200.593428][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4200.593431][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4200.593438][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4200.593440][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4200.593443][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4200.593448][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4200.593454][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4200.593459][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4200.593466][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4200.593474][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4200.593476][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4200.593479][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4200.593482][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4200.593485][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4200.593491][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4200.593495][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4200.593502][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4200.593506][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4200.593510][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4200.593515][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4200.593519][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4200.593524][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4200.593529][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4200.593535][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4200.593542][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4200.593545][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4200.593547][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4200.593551][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4200.593554][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4200.593562][ C2] ksys_write (fs/read_write.c:738) 
[ 4200.593565][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4200.593568][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4200.593575][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4200.593578][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4200.593582][    C2] RIP: 0033:0x7f471c970337
[ 4200.593589][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4200.593591][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4200.593594][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4200.593596][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4200.593598][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4200.593599][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4200.593601][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4228.512971][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4228.512975][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4228.512981][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4228.512994][    C2] Tainted: [L]=SOFTLOCKUP
[ 4228.512995][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4228.512998][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4228.513002][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 4228.513005][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4228.513009][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4228.513011][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4228.513013][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4228.513015][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4228.513016][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4228.513018][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4228.513021][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4228.513025][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4228.513028][    C2] PKRU: 55555554
[ 4228.513029][    C2] Call Trace:
[ 4228.513032][    C2]  <TASK>
[ 4228.513036][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4228.513044][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4228.513049][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4228.513052][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4228.513056][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4228.513061][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4228.513065][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4228.513072][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4228.513074][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4228.513077][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4228.513082][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4228.513088][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4228.513093][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4228.513101][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4228.513108][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4228.513111][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4228.513114][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4228.513117][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4228.513120][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4228.513126][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4228.513130][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4228.513137][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4228.513141][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4228.513145][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4228.513150][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4228.513154][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4228.513160][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4228.513164][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4228.513171][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4228.513177][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4228.513181][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4228.513184][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4228.513187][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4228.513192][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4228.513199][ C2] ksys_write (fs/read_write.c:738) 
[ 4228.513202][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4228.513205][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4228.513212][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4228.513216][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4228.513220][    C2] RIP: 0033:0x7f471c970337
[ 4228.513228][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4228.513229][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4228.513232][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4228.513234][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4228.513236][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4228.513238][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4228.513240][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4256.512972][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4256.512976][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4256.512982][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4256.512995][    C2] Tainted: [L]=SOFTLOCKUP
[ 4256.512997][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4256.512999][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4256.513004][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4256.513007][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4256.513010][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4256.513012][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4256.513014][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4256.513016][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4256.513018][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4256.513020][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4256.513022][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4256.513026][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4256.513028][    C2] PKRU: 55555554
[ 4256.513029][    C2] Call Trace:
[ 4256.513033][    C2]  <TASK>
[ 4256.513037][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4256.513045][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4256.513050][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4256.513053][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4256.513057][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4256.513062][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4256.513066][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4256.513073][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4256.513076][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4256.513078][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4256.513084][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4256.513089][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4256.513095][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4256.513102][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4256.513109][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4256.513112][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4256.513115][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4256.513118][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4256.513121][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4256.513127][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4256.513131][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4256.513139][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4256.513142][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4256.513146][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4256.513151][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4256.513155][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4256.513161][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4256.513165][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4256.513171][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4256.513178][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4256.513182][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4256.513184][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4256.513188][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4256.513192][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4256.513199][ C2] ksys_write (fs/read_write.c:738) 
[ 4256.513203][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4256.513205][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4256.513212][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4256.513217][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4256.513221][    C2] RIP: 0033:0x7f471c970337
[ 4256.513229][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4256.513231][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4256.513234][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4256.513236][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4256.513238][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4256.513239][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4256.513241][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4257.181913][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4257.182097][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 4257.182251][    C2] NMI backtrace for cpu 2
| [ 4257.182264][    C2] Tainted: [L]=SOFTLOCKUP
[ 4257.182265][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4257.182267][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 4257.182274][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 4257.182278][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 4257.182281][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 4257.182283][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 4257.182285][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 4257.182287][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 4257.182289][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 4257.182291][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4257.182293][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4257.182297][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4257.182299][    C2] PKRU: 55555554
[ 4257.182300][    C2] Call Trace:
[ 4257.182302][    C2]  <IRQ>
[ 4257.182304][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 4257.182311][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 4257.182319][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 4257.182325][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 4257.182331][    C2]  </IRQ>
[ 4257.182332][    C2]  <TASK>
[ 4257.182334][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 4257.182338][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4257.182343][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4257.182346][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4257.182348][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4257.182350][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4257.182352][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4257.182353][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4257.182355][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4257.182359][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4257.182365][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4257.182372][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4257.182376][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4257.182379][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4257.182383][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4257.182390][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4257.182393][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4257.182400][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4257.182402][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4257.182405][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4257.182410][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4257.182415][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4257.182420][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4257.182427][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4257.182434][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4257.182437][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4257.182440][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4257.182442][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4257.182445][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4257.182451][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4257.182454][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4257.182462][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4257.182465][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4257.182469][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4257.182474][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4257.182478][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4257.182483][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4257.182488][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4257.182494][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4257.182500][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4257.182504][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4257.182506][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4257.182510][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4257.182513][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4257.182520][ C2] ksys_write (fs/read_write.c:738) 
[ 4257.182523][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4257.182526][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4257.182533][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4257.182536][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4257.182539][    C2] RIP: 0033:0x7f471c970337
[ 4257.182547][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4257.182549][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4257.182552][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4257.182554][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4257.182556][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4257.182558][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4257.182559][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4278.595320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4278.595780][    C2] rcu: 2-....: (2052430 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=722086
| [ 4278.596175][    C2] rcu: (t=2054078 jiffies g=1286133 q=39724 ncpus=4)
| [ 4278.596555][    C2] Tainted: [L]=SOFTLOCKUP
[ 4278.596557][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4278.596559][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4278.596569][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4278.596573][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4278.596576][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4278.596579][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4278.596581][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4278.596583][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4278.596584][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4278.596586][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4278.596589][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4278.596594][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4278.596596][    C2] PKRU: 55555554
[ 4278.596597][    C2] Call Trace:
[ 4278.596598][    C2]  <TASK>
[ 4278.596601][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4278.596608][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4278.596613][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4278.596616][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4278.596620][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4278.596627][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4278.596631][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4278.596637][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4278.596639][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4278.596642][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4278.596647][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4278.596653][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4278.596658][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4278.596665][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4278.596672][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4278.596675][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4278.596678][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4278.596681][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4278.596684][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4278.596690][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4278.596693][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4278.596700][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4278.596704][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4278.596708][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4278.596714][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4278.596718][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4278.596723][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4278.596727][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4278.596734][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4278.596741][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4278.596744][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4278.596746][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4278.596750][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4278.596754][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4278.596761][ C2] ksys_write (fs/read_write.c:738) 
[ 4278.596764][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4278.596767][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4278.596774][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4278.596778][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4278.596781][    C2] RIP: 0033:0x7f471c970337
[ 4278.596790][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4278.596791][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4278.596794][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4278.596797][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4278.596800][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4278.596802][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4278.596805][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4304.512973][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4304.512977][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4304.512983][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4304.512995][    C2] Tainted: [L]=SOFTLOCKUP
[ 4304.512997][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4304.512999][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4304.513004][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4304.513008][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4304.513011][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4304.513013][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4304.513015][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4304.513017][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4304.513019][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4304.513021][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4304.513024][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4304.513028][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4304.513030][    C2] PKRU: 55555554
[ 4304.513032][    C2] Call Trace:
[ 4304.513035][    C2]  <TASK>
[ 4304.513040][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4304.513048][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4304.513053][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4304.513056][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4304.513060][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4304.513065][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4304.513069][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4304.513075][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4304.513078][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4304.513081][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4304.513086][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4304.513091][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4304.513096][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4304.513104][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4304.513111][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4304.513114][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4304.513117][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4304.513120][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4304.513123][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4304.513129][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4304.513133][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4304.513140][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4304.513144][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4304.513147][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4304.513153][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4304.513157][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4304.513162][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4304.513167][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4304.513173][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4304.513180][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4304.513184][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4304.513186][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4304.513190][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4304.513194][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4304.513201][ C2] ksys_write (fs/read_write.c:738) 
[ 4304.513204][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4304.513207][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4304.513214][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4304.513218][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4304.513222][    C2] RIP: 0033:0x7f471c970337
[ 4304.513231][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4304.513232][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4304.513235][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4304.513237][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4304.513239][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4304.513241][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4304.513243][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4332.512970][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4332.512974][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4332.512980][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4332.512992][    C2] Tainted: [L]=SOFTLOCKUP
[ 4332.512994][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4332.512996][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4332.513001][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4332.513004][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4332.513007][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4332.513009][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4332.513011][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4332.513013][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4332.513015][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4332.513017][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4332.513020][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4332.513023][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4332.513026][    C2] PKRU: 55555554
[ 4332.513027][    C2] Call Trace:
[ 4332.513030][    C2]  <TASK>
[ 4332.513034][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4332.513042][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4332.513048][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4332.513050][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4332.513055][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4332.513059][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4332.513063][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4332.513070][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4332.513073][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4332.513076][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4332.513080][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4332.513086][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4332.513092][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4332.513099][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4332.513106][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4332.513109][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4332.513112][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4332.513115][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4332.513118][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4332.513125][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4332.513128][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4332.513136][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4332.513140][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4332.513144][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4332.513150][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4332.513154][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4332.513159][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4332.513164][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4332.513171][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4332.513178][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4332.513181][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4332.513184][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4332.513188][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4332.513192][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4332.513199][ C2] ksys_write (fs/read_write.c:738) 
[ 4332.513203][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4332.513205][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4332.513213][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4332.513217][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4332.513221][    C2] RIP: 0033:0x7f471c970337
[ 4332.513229][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4332.513231][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4332.513234][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4332.513236][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4332.513238][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4332.513240][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4332.513242][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4355.485832][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4355.486013][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 4355.486175][    C2] NMI backtrace for cpu 2
| [ 4355.486190][    C2] Tainted: [L]=SOFTLOCKUP
[ 4355.486191][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4355.486194][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4355.486204][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4355.486207][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4355.486211][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4355.486214][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4355.486216][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4355.486218][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4355.486220][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4355.486222][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4355.486225][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4355.486229][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4355.486231][    C2] PKRU: 55555554
[ 4355.486232][    C2] Call Trace:
[ 4355.486235][    C2]  <TASK>
[ 4355.486240][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4355.486248][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4355.486253][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4355.486256][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4355.486260][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4355.486267][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4355.486271][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4355.486278][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4355.486281][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4355.486284][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4355.486289][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4355.486294][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4355.486300][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4355.486307][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4355.486314][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4355.486318][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4355.486322][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4355.486324][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4355.486327][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4355.486333][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4355.486338][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4355.486345][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4355.486349][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4355.486353][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4355.486359][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4355.486363][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4355.486368][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4355.486373][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4355.486379][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4355.486386][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4355.486390][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4355.486392][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4355.486396][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4355.486400][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4355.486407][ C2] ksys_write (fs/read_write.c:738) 
[ 4355.486410][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4355.486413][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4355.486420][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4355.486424][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4355.486428][    C2] RIP: 0033:0x7f471c970337
[ 4355.486436][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4355.486437][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4355.486441][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4355.486442][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4355.486445][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4355.486447][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4355.486449][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4356.598320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4356.598628][    C2] rcu: 2-....: (2130372 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=761044
| [ 4356.599011][    C2] rcu: (t=2132081 jiffies g=1286133 q=41069 ncpus=4)
| [ 4356.599251][    C2] Tainted: [L]=SOFTLOCKUP
[ 4356.599253][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4356.599255][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4356.599265][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4356.599268][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4356.599272][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4356.599274][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4356.599276][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4356.599278][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4356.599280][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4356.599282][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4356.599285][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4356.599289][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4356.599291][    C2] PKRU: 55555554
[ 4356.599292][    C2] Call Trace:
[ 4356.599293][    C2]  <TASK>
[ 4356.599296][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4356.599304][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4356.599308][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4356.599311][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4356.599315][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4356.599322][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4356.599326][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4356.599332][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4356.599335][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4356.599338][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4356.599343][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4356.599349][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4356.599354][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4356.599362][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4356.599369][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4356.599372][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4356.599375][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4356.599378][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4356.599381][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4356.599388][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4356.599391][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4356.599398][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4356.599402][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4356.599406][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4356.599412][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4356.599416][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4356.599421][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4356.599425][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4356.599432][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4356.599438][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4356.599441][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4356.599444][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4356.599448][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4356.599451][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4356.599458][ C2] ksys_write (fs/read_write.c:738) 
[ 4356.599462][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4356.599464][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4356.599471][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4356.599475][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4356.599479][    C2] RIP: 0033:0x7f471c970337
[ 4356.599487][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4356.599488][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4356.599491][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4356.599493][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4356.599495][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4356.599497][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4356.599499][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4384.512976][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4384.512981][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4384.512987][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4384.513000][    C2] Tainted: [L]=SOFTLOCKUP
[ 4384.513002][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4384.513004][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4384.513009][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4384.513013][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4384.513016][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4384.513018][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4384.513020][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4384.513022][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4384.513024][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4384.513026][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4384.513029][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4384.513033][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4384.513036][    C2] PKRU: 55555554
[ 4384.513037][    C2] Call Trace:
[ 4384.513040][    C2]  <TASK>
[ 4384.513045][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4384.513053][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4384.513059][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4384.513061][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4384.513066][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4384.513071][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4384.513075][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4384.513082][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4384.513085][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4384.513088][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4384.513093][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4384.513099][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4384.513104][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4384.513111][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4384.513119][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4384.513121][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4384.513125][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4384.513128][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4384.513131][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4384.513137][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4384.513141][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4384.513149][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4384.513152][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4384.513156][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4384.513162][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4384.513166][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4384.513171][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4384.513177][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4384.513184][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4384.513190][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4384.513194][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4384.513197][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4384.513201][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4384.513205][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4384.513212][ C2] ksys_write (fs/read_write.c:738) 
[ 4384.513216][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4384.513219][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4384.513226][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4384.513231][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4384.513234][    C2] RIP: 0033:0x7f471c970337
[ 4384.513244][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4384.513245][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4384.513248][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4384.513251][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4384.513253][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4384.513255][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4384.513257][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4412.512974][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4412.512978][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4412.512984][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4412.512998][    C2] Tainted: [L]=SOFTLOCKUP
[ 4412.513000][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4412.513002][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4412.513007][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 4412.513010][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4412.513013][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4412.513015][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4412.513018][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4412.513019][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4412.513021][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4412.513024][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4412.513026][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4412.513030][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4412.513033][    C2] PKRU: 55555554
[ 4412.513034][    C2] Call Trace:
[ 4412.513038][    C2]  <TASK>
[ 4412.513042][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4412.513050][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4412.513056][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4412.513059][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4412.513064][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4412.513069][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4412.513073][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4412.513080][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4412.513083][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4412.513086][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4412.513091][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4412.513097][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4412.513102][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4412.513109][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4412.513116][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4412.513119][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4412.513122][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4412.513125][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4412.513128][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4412.513135][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4412.513139][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4412.513146][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4412.513150][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4412.513154][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4412.513160][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4412.513164][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4412.513170][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4412.513175][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4412.513181][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4412.513188][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4412.513192][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4412.513195][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4412.513199][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4412.513203][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4412.513210][ C2] ksys_write (fs/read_write.c:738) 
[ 4412.513213][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4412.513216][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4412.513223][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4412.513228][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4412.513232][    C2] RIP: 0033:0x7f471c970337
[ 4412.513241][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4412.513243][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4412.513246][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4412.513248][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4412.513250][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4412.513252][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4412.513254][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4434.601321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4434.601772][    C2] rcu: 2-....: (2208327 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=798198
| [ 4434.602148][    C2] rcu: (t=2210084 jiffies g=1286133 q=42105 ncpus=4)
| [ 4434.602388][    C2] Tainted: [L]=SOFTLOCKUP
[ 4434.602390][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4434.602392][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4434.602403][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4434.602406][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4434.602411][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4434.602413][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4434.602415][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4434.602417][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4434.602419][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4434.602421][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4434.602424][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4434.602428][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4434.602430][    C2] PKRU: 55555554
[ 4434.602432][    C2] Call Trace:
[ 4434.602433][    C2]  <TASK>
[ 4434.602436][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4434.602444][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4434.602449][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4434.602452][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4434.602456][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4434.602462][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4434.602466][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4434.602472][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4434.602475][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4434.602478][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4434.602483][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4434.602489][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4434.602494][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4434.602501][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4434.602508][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4434.602511][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4434.602514][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4434.602517][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4434.602520][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4434.602526][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4434.602529][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4434.602537][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4434.602541][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4434.602544][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4434.602550][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4434.602554][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4434.602559][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4434.602564][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4434.602570][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4434.602577][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4434.602580][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4434.602582][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4434.602586][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4434.602590][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4434.602597][ C2] ksys_write (fs/read_write.c:738) 
[ 4434.602600][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4434.602603][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4434.602610][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4434.602614][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4434.602617][    C2] RIP: 0033:0x7f471c970337
[ 4434.602627][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4434.602628][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4434.602631][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4434.602633][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4434.602636][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4434.602638][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4434.602639][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4453.789819][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4453.789994][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 4453.790163][    C2] NMI backtrace for cpu 2
| [ 4453.790179][    C2] Tainted: [L]=SOFTLOCKUP
[ 4453.790180][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4453.790183][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 4453.790191][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 4453.790194][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 4453.790198][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 4453.790200][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 4453.790202][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 4453.790205][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 4453.790207][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 4453.790209][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4453.790212][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4453.790215][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4453.790217][    C2] PKRU: 55555554
[ 4453.790219][    C2] Call Trace:
[ 4453.790222][    C2]  <IRQ>
[ 4453.790223][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 4453.790232][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 4453.790239][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 4453.790245][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 4453.790251][    C2]  </IRQ>
[ 4453.790252][    C2]  <TASK>
[ 4453.790254][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 4453.790259][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 4453.790264][ C2] Code: 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 <48> 01 f0 55 53 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe
All code
========
   0:	0f 1f 40 00          	nopl   0x0(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	48 85 f6             	test   %rsi,%rsi
  1b:	0f 84 5e 01 00 00    	je     0x17f
  21:	48 89 f8             	mov    %rdi,%rax
  24:	41 54                	push   %r12
  26:	44 0f b6 c2          	movzbl %dl,%r8d
  2a:*	48 01 f0             	add    %rsi,%rax		<-- trapping instruction
  2d:	55                   	push   %rbp
  2e:	53                   	push   %rbx
  2f:	72 14                	jb     0x45
  31:	eb 26                	jmp    0x59
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  3d:	ff ff fe 

Code starting with the faulting instruction
===========================================
   0:	48 01 f0             	add    %rsi,%rax
   3:	55                   	push   %rbp
   4:	53                   	push   %rbx
   5:	72 14                	jb     0x1b
   7:	eb 26                	jmp    0x2f
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  13:	ff ff fe 
[ 4453.790267][    C2] RSP: 0018:ffffc9000029f5c0 EFLAGS: 00000202
[ 4453.790269][    C2] RAX: ffff88800b85eb30 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4453.790271][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4453.790273][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4453.790275][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4453.790277][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4453.790281][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4453.790288][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4453.790293][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4453.790300][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4453.790305][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4453.790308][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4453.790312][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4453.790320][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4453.790324][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4453.790330][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4453.790333][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4453.790336][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4453.790341][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4453.790347][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4453.790352][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4453.790359][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4453.790367][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4453.790369][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4453.790372][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4453.790375][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4453.790378][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4453.790384][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4453.790388][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4453.790395][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4453.790399][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4453.790403][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4453.790408][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4453.790412][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4453.790417][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4453.790422][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4453.790428][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4453.790434][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4453.790438][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4453.790440][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4453.790444][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4453.790448][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4453.790455][ C2] ksys_write (fs/read_write.c:738) 
[ 4453.790458][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4453.790461][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4453.790468][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4453.790471][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4453.790475][    C2] RIP: 0033:0x7f471c970337
[ 4453.790483][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4453.790484][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4453.790488][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4453.790490][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4453.790492][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4453.790494][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4453.790496][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4480.512972][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4480.512977][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4480.512982][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4480.512996][    C2] Tainted: [L]=SOFTLOCKUP
[ 4480.512998][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4480.513000][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4480.513005][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4480.513009][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4480.513012][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4480.513014][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4480.513016][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4480.513018][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4480.513020][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4480.513023][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4480.513025][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4480.513029][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4480.513032][    C2] PKRU: 55555554
[ 4480.513033][    C2] Call Trace:
[ 4480.513036][    C2]  <TASK>
[ 4480.513040][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4480.513048][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4480.513053][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4480.513056][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4480.513060][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4480.513065][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4480.513069][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4480.513076][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4480.513079][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4480.513082][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4480.513087][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4480.513093][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4480.513098][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4480.513105][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4480.513113][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4480.513116][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4480.513119][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4480.513122][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4480.513125][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4480.513131][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4480.513134][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4480.513142][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4480.513146][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4480.513150][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4480.513156][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4480.513160][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4480.513166][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4480.513171][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4480.513177][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4480.513184][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4480.513188][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4480.513191][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4480.513194][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4480.513198][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4480.513206][ C2] ksys_write (fs/read_write.c:738) 
[ 4480.513209][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4480.513212][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4480.513219][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4480.513223][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4480.513227][    C2] RIP: 0033:0x7f471c970337
[ 4480.513236][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4480.513237][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4480.513241][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4480.513243][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4480.513245][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4480.513247][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4480.513249][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4508.512972][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4508.512976][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4508.512982][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4508.512995][    C2] Tainted: [L]=SOFTLOCKUP
[ 4508.512997][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4508.512999][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4508.513004][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4508.513008][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4508.513011][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4508.513014][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4508.513016][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4508.513018][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4508.513019][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4508.513022][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4508.513024][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4508.513028][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4508.513030][    C2] PKRU: 55555554
[ 4508.513032][    C2] Call Trace:
[ 4508.513036][    C2]  <TASK>
[ 4508.513040][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4508.513048][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4508.513053][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4508.513056][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4508.513060][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4508.513065][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4508.513069][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4508.513076][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4508.513078][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4508.513081][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4508.513086][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4508.513092][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4508.513097][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4508.513105][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4508.513112][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4508.513115][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4508.513118][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4508.513120][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4508.513123][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4508.513129][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4508.513133][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4508.513141][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4508.513144][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4508.513148][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4508.513154][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4508.513158][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4508.513164][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4508.513168][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4508.513175][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4508.513182][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4508.513186][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4508.513189][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4508.513192][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4508.513196][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4508.513204][ C2] ksys_write (fs/read_write.c:738) 
[ 4508.513208][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4508.513211][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4508.513218][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4508.513222][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4508.513226][    C2] RIP: 0033:0x7f471c970337
[ 4508.513234][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4508.513236][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4508.513239][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4508.513241][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4508.513243][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4508.513245][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4508.513247][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4512.604320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4512.604691][    C2] rcu: 2-....: (2286264 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=837153
| [ 4512.605068][    C2] rcu: (t=2288087 jiffies g=1286133 q=43534 ncpus=4)
| [ 4512.605434][    C2] Tainted: [L]=SOFTLOCKUP
[ 4512.605436][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4512.605438][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 4512.605446][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 4512.605450][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 4512.605454][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4512.605456][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4512.605458][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4512.605460][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4512.605462][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4512.605464][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4512.605467][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4512.605471][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4512.605473][    C2] PKRU: 55555554
[ 4512.605474][    C2] Call Trace:
[ 4512.605476][    C2]  <TASK>
[ 4512.605477][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4512.605485][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4512.605493][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4512.605497][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4512.605500][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4512.605504][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4512.605511][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4512.605514][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4512.605521][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4512.605523][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4512.605526][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4512.605531][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4512.605537][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4512.605542][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4512.605549][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4512.605556][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4512.605559][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4512.605562][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4512.605565][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4512.605568][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4512.605574][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4512.605578][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4512.605585][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4512.605589][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4512.605593][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4512.605598][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4512.605603][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4512.605608][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4512.605612][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4512.605619][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4512.605625][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4512.605628][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4512.605631][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4512.605635][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4512.605638][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4512.605645][ C2] ksys_write (fs/read_write.c:738) 
[ 4512.605649][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4512.605651][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4512.605658][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4512.605662][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4512.605665][    C2] RIP: 0033:0x7f471c970337
[ 4512.605674][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4512.605675][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4512.605678][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4512.605680][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4512.605682][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4512.605684][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4512.605686][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4540.512971][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4540.512975][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4540.512981][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4540.512994][    C2] Tainted: [L]=SOFTLOCKUP
[ 4540.512996][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4540.512998][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4540.513003][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4540.513006][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4540.513010][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4540.513012][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4540.513014][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4540.513016][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4540.513018][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4540.513020][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4540.513023][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4540.513027][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4540.513029][    C2] PKRU: 55555554
[ 4540.513030][    C2] Call Trace:
[ 4540.513034][    C2]  <TASK>
[ 4540.513038][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4540.513046][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4540.513051][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4540.513054][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4540.513058][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4540.513063][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4540.513068][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4540.513074][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4540.513077][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4540.513080][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4540.513086][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4540.513091][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4540.513097][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4540.513104][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4540.513112][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4540.513114][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4540.513118][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4540.513120][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4540.513124][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4540.513130][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4540.513134][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4540.513142][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4540.513146][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4540.513150][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4540.513155][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4540.513159][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4540.513165][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4540.513169][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4540.513176][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4540.513183][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4540.513187][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4540.513190][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4540.513194][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4540.513197][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4540.513205][ C2] ksys_write (fs/read_write.c:738) 
[ 4540.513209][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4540.513211][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4540.513218][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4540.513222][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4540.513226][    C2] RIP: 0033:0x7f471c970337
[ 4540.513235][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4540.513237][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4540.513240][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4540.513243][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4540.513245][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4540.513247][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4540.513249][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4552.093774][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4552.093959][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 4552.094196][    C2] NMI backtrace for cpu 2
| [ 4552.094211][    C2] Tainted: [L]=SOFTLOCKUP
[ 4552.094213][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4552.094216][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4552.094225][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4552.094228][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4552.094232][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4552.094235][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4552.094237][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4552.094239][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4552.094241][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4552.094243][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4552.094246][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4552.094250][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4552.094252][    C2] PKRU: 55555554
[ 4552.094253][    C2] Call Trace:
[ 4552.094256][    C2]  <TASK>
[ 4552.094259][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4552.094267][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4552.094272][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4552.094275][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4552.094279][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4552.094286][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4552.094290][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4552.094296][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4552.094299][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4552.094301][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4552.094306][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4552.094313][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4552.094319][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4552.094326][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4552.094334][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4552.094337][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4552.094340][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4552.094342][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4552.094345][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4552.094352][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4552.094356][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4552.094364][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4552.094368][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4552.094372][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4552.094377][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4552.094382][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4552.094387][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4552.094392][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4552.094398][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4552.094405][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4552.094408][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4552.094411][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4552.094415][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4552.094419][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4552.094426][ C2] ksys_write (fs/read_write.c:738) 
[ 4552.094429][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4552.094432][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4552.094439][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4552.094443][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4552.094446][    C2] RIP: 0033:0x7f471c970337
[ 4552.094454][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4552.094456][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4552.094459][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4552.094461][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4552.094463][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4552.094465][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4552.094467][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4576.512973][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4576.512978][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4576.512983][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4576.512997][    C2] Tainted: [L]=SOFTLOCKUP
[ 4576.512999][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4576.513001][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4576.513006][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4576.513010][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4576.513013][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4576.513015][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4576.513017][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4576.513020][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4576.513021][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4576.513024][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4576.513027][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4576.513031][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4576.513033][    C2] PKRU: 55555554
[ 4576.513034][    C2] Call Trace:
[ 4576.513038][    C2]  <TASK>
[ 4576.513042][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4576.513049][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4576.513055][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4576.513058][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4576.513062][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4576.513067][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4576.513071][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4576.513078][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4576.513081][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4576.513084][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4576.513088][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4576.513095][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4576.513100][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4576.513107][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4576.513115][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4576.513117][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4576.513121][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4576.513123][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4576.513126][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4576.513133][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4576.513137][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4576.513145][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4576.513148][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4576.513152][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4576.513159][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4576.513163][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4576.513168][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4576.513173][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4576.513180][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4576.513187][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4576.513190][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4576.513193][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4576.513197][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4576.513201][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4576.513208][ C2] ksys_write (fs/read_write.c:738) 
[ 4576.513212][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4576.513214][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4576.513222][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4576.513226][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4576.513230][    C2] RIP: 0033:0x7f471c970337
[ 4576.513239][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4576.513240][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4576.513243][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4576.513246][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4576.513248][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4576.513250][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4576.513252][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4590.607320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4590.607699][    C2] rcu: 2-....: (2364206 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=876090
| [ 4590.608072][    C2] rcu: (t=2366090 jiffies g=1286133 q=44888 ncpus=4)
| [ 4590.608433][    C2] Tainted: [L]=SOFTLOCKUP
[ 4590.608434][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4590.608437][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4590.608447][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4590.608450][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4590.608454][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4590.608456][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4590.608458][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4590.608460][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4590.608462][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4590.608464][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4590.608467][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4590.608471][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4590.608473][    C2] PKRU: 55555554
[ 4590.608474][    C2] Call Trace:
[ 4590.608475][    C2]  <TASK>
[ 4590.608477][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4590.608485][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4590.608490][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4590.608493][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4590.608497][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4590.608504][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4590.608507][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4590.608514][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4590.608516][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4590.608519][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4590.608524][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4590.608530][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4590.608535][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4590.608542][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4590.608550][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4590.608553][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4590.608556][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4590.608558][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4590.608561][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4590.608567][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4590.608571][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4590.608578][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4590.608582][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4590.608586][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4590.608591][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4590.608596][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4590.608600][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4590.608605][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4590.608612][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4590.608619][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4590.608622][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4590.608624][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4590.608628][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4590.608632][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4590.608639][ C2] ksys_write (fs/read_write.c:738) 
[ 4590.608642][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4590.608645][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4590.608652][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4590.608656][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4590.608659][    C2] RIP: 0033:0x7f471c970337
[ 4590.608668][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4590.608670][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4590.608673][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4590.608675][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4590.608677][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4590.608679][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4590.608681][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4616.512974][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4616.512979][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4616.512984][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4616.512998][    C2] Tainted: [L]=SOFTLOCKUP
[ 4616.512999][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4616.513002][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 4616.513009][ C2] Code: 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff <5b> b8 01 00 00 00 5d 41 5c e9 3c fa 1a 02 41 bc 08 00 00 00 45 29
All code
========
   0:	00 74 f2 48          	add    %dh,0x48(%rdx,%rsi,8)
   4:	89 c2                	mov    %eax,%edx
   6:	b8 01 00 00 00       	mov    $0x1,%eax
   b:	48 85 d2             	test   %rdx,%rdx
   e:	0f 84 4c ff ff ff    	je     0xffffffffffffff60
  14:	41 83 e2 07          	and    $0x7,%r10d
  18:	49 39 d1             	cmp    %rdx,%r9
  1b:	0f 85 34 ff ff ff    	jne    0xffffffffffffff55
  21:	45 3a 11             	cmp    (%r9),%r10b
  24:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff55
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	b8 01 00 00 00       	mov    $0x1,%eax
  30:	5d                   	pop    %rbp
  31:	41 5c                	pop    %r12
  33:	e9 3c fa 1a 02       	jmp    0x21afa74
  38:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  3e:	45                   	rex.RB
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	b8 01 00 00 00       	mov    $0x1,%eax
   6:	5d                   	pop    %rbp
   7:	41 5c                	pop    %r12
   9:	e9 3c fa 1a 02       	jmp    0x21afa4a
   e:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  14:	45                   	rex.RB
  15:	29                   	.byte 0x29
[ 4616.513012][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000246
[ 4616.513015][    C2] RAX: ffffed100170bd67 RBX: ffffed100170bd67 RCX: ffffffffa2cd0f13
[ 4616.513017][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4616.513020][    C2] RBP: ffffed100170bd66 R08: 0000000000000000 R09: ffffed100170bd66
[ 4616.513022][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4616.513023][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4616.513026][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4616.513028][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4616.513032][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4616.513035][    C2] PKRU: 55555554
[ 4616.513036][    C2] Call Trace:
[ 4616.513040][    C2]  <TASK>
[ 4616.513044][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4616.513050][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4616.513057][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4616.513063][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4616.513065][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4616.513069][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4616.513074][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4616.513078][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4616.513085][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4616.513087][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4616.513090][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4616.513095][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4616.513101][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4616.513106][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4616.513113][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4616.513121][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4616.513123][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4616.513126][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4616.513129][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4616.513132][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4616.513138][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4616.513142][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4616.513150][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4616.513153][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4616.513157][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4616.513163][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4616.513167][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4616.513172][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4616.513177][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4616.513183][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4616.513189][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4616.513193][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4616.513195][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4616.513199][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4616.513203][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4616.513210][ C2] ksys_write (fs/read_write.c:738) 
[ 4616.513213][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4616.513216][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4616.513223][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4616.513227][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4616.513231][    C2] RIP: 0033:0x7f471c970337
[ 4616.513240][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4616.513242][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4616.513245][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4616.513247][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4616.513249][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4616.513251][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4616.513253][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4644.512980][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4644.512984][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4644.512991][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4644.513006][    C2] Tainted: [L]=SOFTLOCKUP
[ 4644.513008][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4644.513011][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4644.513017][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4644.513021][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4644.513024][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4644.513027][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4644.513029][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4644.513031][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4644.513033][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4644.513035][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4644.513038][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4644.513043][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4644.513045][    C2] PKRU: 55555554
[ 4644.513046][    C2] Call Trace:
[ 4644.513050][    C2]  <TASK>
[ 4644.513055][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4644.513063][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4644.513070][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4644.513073][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4644.513078][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4644.513083][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4644.513088][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4644.513095][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4644.513098][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4644.513101][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4644.513106][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4644.513112][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4644.513117][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4644.513125][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4644.513133][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4644.513136][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4644.513139][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4644.513142][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4644.513145][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4644.513152][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4644.513157][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4644.513164][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4644.513168][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4644.513172][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4644.513178][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4644.513182][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4644.513189][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4644.513194][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4644.513201][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4644.513209][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4644.513212][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4644.513215][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4644.513219][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4644.513223][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4644.513230][ C2] ksys_write (fs/read_write.c:738) 
[ 4644.513234][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4644.513237][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4644.513245][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4644.513250][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4644.513254][    C2] RIP: 0033:0x7f471c970337
[ 4644.513265][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4644.513267][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4644.513270][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4644.513273][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4644.513275][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4644.513277][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4644.513279][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4650.397988][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4650.398256][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 4650.398465][    C2] NMI backtrace for cpu 2
| [ 4650.398486][    C2] Tainted: [L]=SOFTLOCKUP
[ 4650.398488][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4650.398491][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4650.398502][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4650.398505][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4650.398509][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4650.398512][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4650.398514][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4650.398516][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4650.398518][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4650.398520][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4650.398523][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4650.398527][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4650.398529][    C2] PKRU: 55555554
[ 4650.398531][    C2] Call Trace:
[ 4650.398535][    C2]  <TASK>
[ 4650.398540][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4650.398548][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4650.398555][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4650.398558][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4650.398562][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4650.398569][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4650.398573][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4650.398580][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4650.398583][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4650.398586][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4650.398591][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4650.398597][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4650.398602][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4650.398610][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4650.398617][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4650.398620][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4650.398623][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4650.398626][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4650.398629][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4650.398636][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4650.398640][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4650.398648][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4650.398652][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4650.398656][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4650.398662][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4650.398666][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4650.398672][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4650.398677][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4650.398683][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4650.398690][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4650.398695][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4650.398697][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4650.398701][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4650.398705][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4650.398712][ C2] ksys_write (fs/read_write.c:738) 
[ 4650.398716][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4650.398718][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4650.398725][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4650.398730][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4650.398734][    C2] RIP: 0033:0x7f471c970337
[ 4650.398744][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4650.398746][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4650.398749][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4650.398751][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4650.398753][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4650.398756][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4650.398757][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4668.610323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4668.610751][    C2] rcu: 2-....: (2442143 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=913558
| [ 4668.611243][    C2] rcu: (t=2444093 jiffies g=1286133 q=46236 ncpus=4)
| [ 4668.611492][    C2] Tainted: [L]=SOFTLOCKUP
[ 4668.611494][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4668.611496][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4668.611506][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 4668.611510][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4668.611514][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4668.611516][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4668.611518][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4668.611520][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4668.611522][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4668.611524][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4668.611527][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4668.611531][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4668.611533][    C2] PKRU: 55555554
[ 4668.611535][    C2] Call Trace:
[ 4668.611536][    C2]  <TASK>
[ 4668.611538][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4668.611546][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4668.611551][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4668.611554][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4668.611558][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4668.611566][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4668.611569][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4668.611576][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4668.611578][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4668.611581][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4668.611586][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4668.611592][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4668.611597][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4668.611605][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4668.611612][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4668.611615][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4668.611618][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4668.611621][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4668.611624][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4668.611630][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4668.611634][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4668.611641][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4668.611645][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4668.611649][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4668.611655][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4668.611659][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4668.611664][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4668.611669][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4668.611676][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4668.611683][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4668.611686][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4668.611689][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4668.611693][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4668.611697][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4668.611704][ C2] ksys_write (fs/read_write.c:738) 
[ 4668.611707][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4668.611710][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4668.611717][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4668.611721][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4668.611724][    C2] RIP: 0033:0x7f471c970337
[ 4668.611734][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4668.611735][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4668.611738][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4668.611740][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4668.611742][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4668.611744][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4668.611746][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4696.512974][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4696.512978][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4696.512984][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4696.512998][    C2] Tainted: [L]=SOFTLOCKUP
[ 4696.513000][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4696.513002][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4696.513008][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4696.513011][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4696.513014][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4696.513017][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4696.513019][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4696.513021][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4696.513023][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4696.513025][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4696.513028][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4696.513032][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4696.513035][    C2] PKRU: 55555554
[ 4696.513036][    C2] Call Trace:
[ 4696.513040][    C2]  <TASK>
[ 4696.513044][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4696.513052][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4696.513058][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4696.513061][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4696.513065][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4696.513070][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4696.513075][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4696.513081][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4696.513084][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4696.513087][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4696.513092][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4696.513098][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4696.513103][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4696.513110][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4696.513118][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4696.513120][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4696.513123][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4696.513126][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4696.513129][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4696.513135][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4696.513139][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4696.513147][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4696.513151][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4696.513155][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4696.513161][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4696.513165][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4696.513171][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4696.513175][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4696.513182][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4696.513189][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4696.513193][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4696.513196][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4696.513200][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4696.513204][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4696.513211][ C2] ksys_write (fs/read_write.c:738) 
[ 4696.513214][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4696.513217][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4696.513224][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4696.513228][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4696.513233][    C2] RIP: 0033:0x7f471c970337
[ 4696.513241][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4696.513243][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4696.513246][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4696.513248][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4696.513250][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4696.513252][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4696.513254][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4724.512972][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4724.512976][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4724.512982][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4724.512996][    C2] Tainted: [L]=SOFTLOCKUP
[ 4724.512998][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4724.513001][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4724.513006][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4724.513009][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4724.513012][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4724.513015][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4724.513017][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4724.513019][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4724.513021][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4724.513023][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4724.513026][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4724.513031][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4724.513034][    C2] PKRU: 55555554
[ 4724.513035][    C2] Call Trace:
[ 4724.513039][    C2]  <TASK>
[ 4724.513043][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4724.513051][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4724.513057][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4724.513060][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4724.513063][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4724.513068][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4724.513073][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4724.513080][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4724.513082][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4724.513085][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4724.513090][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4724.513097][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4724.513102][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4724.513110][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4724.513117][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4724.513120][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4724.513123][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4724.513126][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4724.513129][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4724.513135][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4724.513140][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4724.513148][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4724.513151][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4724.513155][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4724.513162][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4724.513166][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4724.513171][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4724.513176][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4724.513183][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4724.513190][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4724.513194][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4724.513196][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4724.513200][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4724.513204][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4724.513211][ C2] ksys_write (fs/read_write.c:738) 
[ 4724.513215][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4724.513217][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4724.513224][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4724.513229][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4724.513233][    C2] RIP: 0033:0x7f471c970337
[ 4724.513242][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4724.513243][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4724.513246][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4724.513248][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4724.513250][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4724.513252][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4724.513254][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4746.613320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4746.613692][    C2] rcu: 2-....: (2520097 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=952451
| [ 4746.614111][    C2] rcu: (t=2522096 jiffies g=1286133 q=47259 ncpus=4)
| [ 4746.614496][    C2] Tainted: [L]=SOFTLOCKUP
[ 4746.614498][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4746.614500][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4746.614510][ C2] Code: 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d 3f e5 fd <41> 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44
All code
========
   0:	01 00                	add    %eax,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	49 c1 ee 03          	shr    $0x3,%r14
   8:	41 83 e5 07          	and    $0x7,%r13d
   c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  13:	fc ff df 
  16:	49 01 c6             	add    %rax,%r14
  19:	41 83 c5 03          	add    $0x3,%r13d
  1d:	be 04 00 00 00       	mov    $0x4,%esi
  22:	48 89 ef             	mov    %rbp,%rdi
  25:	e8 5d 3f e5 fd       	call   0xfffffffffde53f87
  2a:*	41 0f b6 06          	movzbl (%r14),%eax		<-- trapping instruction
  2e:	41 38 c5             	cmp    %al,%r13b
  31:	7c 08                	jl     0x3b
  33:	84 c0                	test   %al,%al
  35:	0f 85 8d 07 00 00    	jne    0x7c8
  3b:	8b 45 00             	mov    0x0(%rbp),%eax
  3e:	89                   	.byte 0x89
  3f:	44                   	rex.R

Code starting with the faulting instruction
===========================================
   0:	41 0f b6 06          	movzbl (%r14),%eax
   4:	41 38 c5             	cmp    %al,%r13b
   7:	7c 08                	jl     0x11
   9:	84 c0                	test   %al,%al
   b:	0f 85 8d 07 00 00    	jne    0x79e
  11:	8b 45 00             	mov    0x0(%rbp),%eax
  14:	89                   	.byte 0x89
  15:	44                   	rex.R
[ 4746.614514][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000246
[ 4746.614518][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4746.614520][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4746.614522][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4746.614524][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4746.614526][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4746.614528][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4746.614531][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4746.614535][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4746.614538][    C2] PKRU: 55555554
[ 4746.614539][    C2] Call Trace:
[ 4746.614541][    C2]  <TASK>
[ 4746.614543][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4746.614551][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4746.614556][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4746.614559][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4746.614562][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4746.614570][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4746.614573][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4746.614579][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4746.614582][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4746.614585][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4746.614590][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4746.614596][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4746.614601][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4746.614608][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4746.614616][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4746.614619][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4746.614622][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4746.614625][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4746.614628][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4746.614634][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4746.614637][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4746.614645][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4746.614649][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4746.614652][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4746.614658][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4746.614662][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4746.614667][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4746.614672][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4746.614678][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4746.614685][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4746.614689][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4746.614691][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4746.614695][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4746.614699][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4746.614706][ C2] ksys_write (fs/read_write.c:738) 
[ 4746.614709][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4746.614712][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4746.614719][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4746.614723][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4746.614727][    C2] RIP: 0033:0x7f471c970337
[ 4746.614736][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4746.614738][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4746.614741][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4746.614743][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4746.614745][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4746.614747][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4746.614749][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4748.701797][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4748.702095][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 4748.702268][    C2] NMI backtrace for cpu 2
| [ 4748.702284][    C2] Tainted: [L]=SOFTLOCKUP
[ 4748.702285][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4748.702288][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 4748.702296][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 4748.702299][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 4748.702303][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 4748.702305][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 4748.702308][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 4748.702310][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 4748.702312][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 4748.702314][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4748.702318][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4748.702322][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4748.702324][    C2] PKRU: 55555554
[ 4748.702325][    C2] Call Trace:
[ 4748.702327][    C2]  <IRQ>
[ 4748.702329][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 4748.702339][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 4748.702346][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 4748.702352][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 4748.702358][    C2]  </IRQ>
[ 4748.702359][    C2]  <TASK>
[ 4748.702361][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 4748.702366][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 4748.702372][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 4748.702375][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 4748.702377][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4748.702379][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4748.702381][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4748.702383][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4748.702385][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4748.702389][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4748.702397][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4748.702402][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4748.702409][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4748.702413][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4748.702416][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4748.702420][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4748.702427][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4748.702432][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4748.702438][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4748.702441][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4748.702444][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4748.702449][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4748.702455][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4748.702460][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4748.702466][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4748.702474][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4748.702477][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4748.702480][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4748.702483][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4748.702486][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4748.702492][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4748.702496][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4748.702503][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4748.702507][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4748.702511][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4748.702517][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4748.702521][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4748.702526][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4748.702531][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4748.702537][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4748.702543][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4748.702547][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4748.702550][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4748.702554][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4748.702557][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4748.702564][ C2] ksys_write (fs/read_write.c:738) 
[ 4748.702568][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4748.702570][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4748.702577][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4748.702581][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4748.702584][    C2] RIP: 0033:0x7f471c970337
[ 4748.702592][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4748.702594][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4748.702597][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4748.702599][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4748.702601][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4748.702603][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4748.702604][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4776.512972][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4776.512977][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4776.512983][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4776.512998][    C2] Tainted: [L]=SOFTLOCKUP
[ 4776.512999][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4776.513002][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4776.513007][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4776.513010][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4776.513014][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4776.513016][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4776.513019][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4776.513021][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4776.513023][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4776.513025][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4776.513028][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4776.513032][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4776.513034][    C2] PKRU: 55555554
[ 4776.513036][    C2] Call Trace:
[ 4776.513039][    C2]  <TASK>
[ 4776.513044][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4776.513052][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4776.513058][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4776.513061][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4776.513065][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4776.513069][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4776.513074][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4776.513080][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4776.513083][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4776.513086][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4776.513091][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4776.513097][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4776.513102][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4776.513110][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4776.513117][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4776.513120][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4776.513123][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4776.513126][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4776.513129][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4776.513135][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4776.513139][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4776.513147][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4776.513151][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4776.513155][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4776.513160][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4776.513164][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4776.513170][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4776.513175][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4776.513182][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4776.513189][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4776.513193][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4776.513195][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4776.513199][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4776.513203][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4776.513210][ C2] ksys_write (fs/read_write.c:738) 
[ 4776.513214][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4776.513217][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4776.513223][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4776.513228][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4776.513232][    C2] RIP: 0033:0x7f471c970337
[ 4776.513240][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4776.513242][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4776.513245][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4776.513248][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4776.513250][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4776.513252][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4776.513254][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4804.512971][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4804.512975][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4804.512982][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4804.512995][    C2] Tainted: [L]=SOFTLOCKUP
[ 4804.512996][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4804.512999][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4804.513004][ C2] Code: 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d 3f e5 fd <41> 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44
All code
========
   0:	01 00                	add    %eax,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	49 c1 ee 03          	shr    $0x3,%r14
   8:	41 83 e5 07          	and    $0x7,%r13d
   c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  13:	fc ff df 
  16:	49 01 c6             	add    %rax,%r14
  19:	41 83 c5 03          	add    $0x3,%r13d
  1d:	be 04 00 00 00       	mov    $0x4,%esi
  22:	48 89 ef             	mov    %rbp,%rdi
  25:	e8 5d 3f e5 fd       	call   0xfffffffffde53f87
  2a:*	41 0f b6 06          	movzbl (%r14),%eax		<-- trapping instruction
  2e:	41 38 c5             	cmp    %al,%r13b
  31:	7c 08                	jl     0x3b
  33:	84 c0                	test   %al,%al
  35:	0f 85 8d 07 00 00    	jne    0x7c8
  3b:	8b 45 00             	mov    0x0(%rbp),%eax
  3e:	89                   	.byte 0x89
  3f:	44                   	rex.R

Code starting with the faulting instruction
===========================================
   0:	41 0f b6 06          	movzbl (%r14),%eax
   4:	41 38 c5             	cmp    %al,%r13b
   7:	7c 08                	jl     0x11
   9:	84 c0                	test   %al,%al
   b:	0f 85 8d 07 00 00    	jne    0x79e
  11:	8b 45 00             	mov    0x0(%rbp),%eax
  14:	89                   	.byte 0x89
  15:	44                   	rex.R
[ 4804.513007][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000246
[ 4804.513011][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4804.513013][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4804.513015][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4804.513017][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4804.513019][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4804.513021][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4804.513024][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4804.513028][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4804.513030][    C2] PKRU: 55555554
[ 4804.513032][    C2] Call Trace:
[ 4804.513036][    C2]  <TASK>
[ 4804.513040][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4804.513048][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4804.513054][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4804.513057][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4804.513061][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4804.513066][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4804.513071][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4804.513077][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4804.513080][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4804.513083][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4804.513088][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4804.513094][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4804.513099][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4804.513107][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4804.513114][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4804.513117][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4804.513120][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4804.513123][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4804.513126][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4804.513132][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4804.513136][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4804.513144][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4804.513148][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4804.513152][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4804.513158][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4804.513162][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4804.513167][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4804.513172][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4804.513179][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4804.513186][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4804.513190][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4804.513192][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4804.513196][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4804.513200][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4804.513207][ C2] ksys_write (fs/read_write.c:738) 
[ 4804.513211][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4804.513213][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4804.513220][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4804.513225][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4804.513229][    C2] RIP: 0033:0x7f471c970337
[ 4804.513238][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4804.513240][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4804.513243][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4804.513245][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4804.513247][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4804.513249][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4804.513251][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4824.616321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4824.616635][    C2] rcu: 2-....: (2598031 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=991348
| [ 4824.617139][    C2] rcu: (t=2600099 jiffies g=1286133 q=48688 ncpus=4)
| [ 4824.617378][    C2] Tainted: [L]=SOFTLOCKUP
[ 4824.617380][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4824.617382][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4824.617392][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4824.617395][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4824.617400][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4824.617402][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4824.617404][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4824.617406][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4824.617408][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4824.617410][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4824.617413][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4824.617417][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4824.617419][    C2] PKRU: 55555554
[ 4824.617421][    C2] Call Trace:
[ 4824.617422][    C2]  <TASK>
[ 4824.617424][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4824.617432][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4824.617437][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4824.617440][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4824.617444][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4824.617451][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4824.617455][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4824.617461][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4824.617464][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4824.617467][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4824.617472][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4824.617478][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4824.617484][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4824.617491][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4824.617499][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4824.617502][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4824.617505][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4824.617507][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4824.617510][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4824.617517][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4824.617520][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4824.617527][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4824.617531][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4824.617535][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4824.617541][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4824.617545][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4824.617550][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4824.617555][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4824.617561][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4824.617568][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4824.617571][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4824.617574][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4824.617578][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4824.617582][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4824.617589][ C2] ksys_write (fs/read_write.c:738) 
[ 4824.617592][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4824.617595][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4824.617602][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4824.617606][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4824.617609][    C2] RIP: 0033:0x7f471c970337
[ 4824.617619][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4824.617620][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4824.617623][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4824.617625][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4824.617627][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4824.617629][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4824.617631][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4847.005838][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4847.006148][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 4847.006358][    C2] NMI backtrace for cpu 2
| [ 4847.006374][    C2] Tainted: [L]=SOFTLOCKUP
[ 4847.006376][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4847.006379][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4847.006388][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4847.006392][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4847.006395][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4847.006398][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4847.006400][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4847.006402][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4847.006404][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4847.006406][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4847.006409][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4847.006413][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4847.006415][    C2] PKRU: 55555554
[ 4847.006417][    C2] Call Trace:
[ 4847.006420][    C2]  <TASK>
[ 4847.006424][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4847.006431][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4847.006438][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4847.006441][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4847.006445][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4847.006452][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4847.006456][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4847.006462][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4847.006465][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4847.006468][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4847.006473][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4847.006479][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4847.006484][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4847.006491][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4847.006499][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4847.006502][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4847.006505][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4847.006508][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4847.006511][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4847.006517][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4847.006521][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4847.006529][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4847.006533][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4847.006537][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4847.006542][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4847.006547][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4847.006552][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4847.006557][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4847.006563][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4847.006570][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4847.006574][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4847.006576][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4847.006580][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4847.006584][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4847.006592][ C2] ksys_write (fs/read_write.c:738) 
[ 4847.006595][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4847.006598][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4847.006604][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4847.006608][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4847.006613][    C2] RIP: 0033:0x7f471c970337
[ 4847.006621][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4847.006623][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4847.006626][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4847.006628][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4847.006630][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4847.006632][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4847.006634][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4872.512971][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4872.512975][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4872.512982][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4872.512995][    C2] Tainted: [L]=SOFTLOCKUP
[ 4872.512997][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4872.512999][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4872.513004][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4872.513007][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4872.513011][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4872.513013][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4872.513015][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4872.513017][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4872.513019][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4872.513021][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4872.513024][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4872.513028][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4872.513030][    C2] PKRU: 55555554
[ 4872.513032][    C2] Call Trace:
[ 4872.513035][    C2]  <TASK>
[ 4872.513039][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4872.513047][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4872.513053][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4872.513055][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4872.513059][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4872.513064][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4872.513069][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4872.513075][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4872.513078][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4872.513081][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4872.513086][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4872.513092][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4872.513097][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4872.513104][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4872.513113][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4872.513115][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4872.513119][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4872.513122][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4872.513125][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4872.513131][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4872.513135][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4872.513143][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4872.513147][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4872.513151][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4872.513157][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4872.513161][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4872.513166][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4872.513172][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4872.513179][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4872.513185][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4872.513189][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4872.513192][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4872.513195][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4872.513199][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4872.513207][ C2] ksys_write (fs/read_write.c:738) 
[ 4872.513210][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4872.513213][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4872.513220][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4872.513224][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4872.513228][    C2] RIP: 0033:0x7f471c970337
[ 4872.513237][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4872.513239][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4872.513242][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4872.513244][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4872.513246][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4872.513248][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4872.513250][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4900.512972][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4900.512977][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4900.512982][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4900.512996][    C2] Tainted: [L]=SOFTLOCKUP
[ 4900.512997][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4900.513000][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4900.513005][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4900.513008][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4900.513011][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4900.513014][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4900.513016][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4900.513018][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4900.513020][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4900.513022][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4900.513025][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4900.513029][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4900.513031][    C2] PKRU: 55555554
[ 4900.513032][    C2] Call Trace:
[ 4900.513036][    C2]  <TASK>
[ 4900.513040][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4900.513048][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4900.513054][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4900.513057][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4900.513061][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4900.513066][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4900.513070][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4900.513077][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4900.513080][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4900.513082][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4900.513087][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4900.513093][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4900.513098][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4900.513105][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4900.513113][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4900.513115][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4900.513118][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4900.513121][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4900.513124][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4900.513130][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4900.513134][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4900.513142][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4900.513145][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4900.513149][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4900.513155][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4900.513159][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4900.513165][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4900.513169][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4900.513176][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4900.513182][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4900.513187][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4900.513190][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4900.513194][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4900.513197][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4900.513205][ C2] ksys_write (fs/read_write.c:738) 
[ 4900.513208][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4900.513211][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4900.513217][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4900.513222][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4900.513227][    C2] RIP: 0033:0x7f471c970337
[ 4900.513235][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4900.513237][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4900.513240][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4900.513242][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4900.513244][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4900.513246][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4900.513248][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4902.619321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4902.619648][    C2] rcu: 2-....: (2675970 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1030271
| [ 4902.620147][    C2] rcu: (t=2678102 jiffies g=1286133 q=50033 ncpus=4)
| [ 4902.620391][    C2] Tainted: [L]=SOFTLOCKUP
[ 4902.620393][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4902.620395][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4902.620405][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4902.620409][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4902.620413][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4902.620416][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4902.620418][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4902.620420][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4902.620422][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4902.620424][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4902.620427][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4902.620431][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4902.620433][    C2] PKRU: 55555554
[ 4902.620435][    C2] Call Trace:
[ 4902.620436][    C2]  <TASK>
[ 4902.620439][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4902.620447][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4902.620452][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4902.620455][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4902.620459][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4902.620466][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4902.620469][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4902.620476][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4902.620479][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4902.620481][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4902.620486][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4902.620492][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4902.620497][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4902.620505][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4902.620512][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4902.620515][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4902.620518][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4902.620521][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4902.620524][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4902.620530][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4902.620534][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4902.620541][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4902.620545][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4902.620549][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4902.620554][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4902.620558][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4902.620563][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4902.620568][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4902.620574][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4902.620581][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4902.620584][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4902.620587][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4902.620591][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4902.620595][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4902.620602][ C2] ksys_write (fs/read_write.c:738) 
[ 4902.620605][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4902.620608][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4902.620614][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4902.620618][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4902.620622][    C2] RIP: 0033:0x7f471c970337
[ 4902.620630][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4902.620632][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4902.620635][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4902.620637][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4902.620639][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4902.620641][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4902.620643][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4928.512974][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4928.512979][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4928.512985][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4928.512999][    C2] Tainted: [L]=SOFTLOCKUP
[ 4928.513001][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4928.513003][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4928.513009][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4928.513013][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4928.513016][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4928.513018][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4928.513020][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4928.513022][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4928.513024][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4928.513027][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4928.513029][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4928.513034][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4928.513037][    C2] PKRU: 55555554
[ 4928.513038][    C2] Call Trace:
[ 4928.513042][    C2]  <TASK>
[ 4928.513047][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4928.513054][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4928.513061][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4928.513064][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4928.513068][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4928.513073][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4928.513077][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4928.513084][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4928.513087][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4928.513090][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4928.513095][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4928.513101][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4928.513106][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4928.513114][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4928.513121][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4928.513124][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4928.513127][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4928.513129][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4928.513132][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4928.513139][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4928.513142][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4928.513150][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4928.513154][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4928.513158][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4928.513164][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4928.513168][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4928.513173][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4928.513178][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4928.513185][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4928.513191][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4928.513195][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4928.513198][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4928.513202][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4928.513205][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4928.513213][ C2] ksys_write (fs/read_write.c:738) 
[ 4928.513217][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4928.513219][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4928.513227][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4928.513231][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4928.513235][    C2] RIP: 0033:0x7f471c970337
[ 4928.513244][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4928.513246][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4928.513249][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4928.513251][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4928.513253][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4928.513255][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4928.513257][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4945.309767][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4945.310020][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 4945.310177][    C2] NMI backtrace for cpu 2
| [ 4945.310194][    C2] Tainted: [L]=SOFTLOCKUP
[ 4945.310195][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4945.310198][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 4945.310207][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 4945.310210][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 4945.310214][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 4945.310216][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 4945.310219][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 4945.310221][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 4945.310223][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 4945.310225][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4945.310228][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4945.310232][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4945.310235][    C2] PKRU: 55555554
[ 4945.310236][    C2] Call Trace:
[ 4945.310239][    C2]  <IRQ>
[ 4945.310241][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 4945.310251][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 4945.310258][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 4945.310264][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 4945.310270][    C2]  </IRQ>
[ 4945.310271][    C2]  <TASK>
[ 4945.310273][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 4945.310277][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 4945.310283][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 4945.310286][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000282
[ 4945.310288][    C2] RAX: ffff88800b85eb34 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4945.310290][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4945.310292][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4945.310294][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4945.310296][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4945.310300][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4945.310309][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4945.310313][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4945.310321][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4945.310326][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4945.310329][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4945.310333][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4945.310340][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4945.310344][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4945.310350][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4945.310353][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4945.310356][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4945.310361][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4945.310368][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4945.310373][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4945.310380][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4945.310387][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4945.310390][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4945.310393][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4945.310395][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4945.310399][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4945.310405][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4945.310408][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4945.310416][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4945.310419][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4945.310423][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4945.310429][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4945.310433][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4945.310439][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4945.310443][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4945.310450][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4945.310456][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4945.310459][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4945.310462][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4945.310466][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4945.310470][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4945.310477][ C2] ksys_write (fs/read_write.c:738) 
[ 4945.310480][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4945.310483][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4945.310490][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4945.310493][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4945.310497][    C2] RIP: 0033:0x7f471c970337
[ 4945.310506][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4945.310508][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4945.310511][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4945.310513][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4945.310515][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4945.310517][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4945.310519][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4972.512975][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 4972.512979][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 4972.512985][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 4972.512999][    C2] Tainted: [L]=SOFTLOCKUP
[ 4972.513001][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4972.513003][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4972.513009][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4972.513012][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4972.513015][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4972.513017][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4972.513020][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4972.513022][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4972.513024][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4972.513026][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4972.513029][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4972.513033][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4972.513035][    C2] PKRU: 55555554
[ 4972.513036][    C2] Call Trace:
[ 4972.513041][    C2]  <TASK>
[ 4972.513044][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4972.513052][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4972.513058][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4972.513061][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4972.513065][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4972.513070][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4972.513074][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4972.513080][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4972.513083][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4972.513086][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4972.513091][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4972.513097][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4972.513102][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4972.513109][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4972.513117][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4972.513119][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4972.513123][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4972.513125][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4972.513128][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4972.513134][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4972.513138][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4972.513146][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4972.513150][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4972.513154][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4972.513160][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4972.513164][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4972.513169][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4972.513174][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4972.513181][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4972.513188][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4972.513192][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4972.513194][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4972.513198][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4972.513202][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4972.513209][ C2] ksys_write (fs/read_write.c:738) 
[ 4972.513213][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4972.513215][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4972.513223][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4972.513227][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4972.513231][    C2] RIP: 0033:0x7f471c970337
[ 4972.513240][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4972.513242][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4972.513245][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4972.513247][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4972.513249][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4972.513251][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4972.513253][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 4980.622323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4980.622675][    C2] rcu: 2-....: (2753907 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1069068
| [ 4980.623183][    C2] rcu: (t=2756105 jiffies g=1286133 q=51462 ncpus=4)
| [ 4980.623438][    C2] Tainted: [L]=SOFTLOCKUP
[ 4980.623440][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4980.623443][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4980.623455][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4980.623459][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 4980.623463][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 4980.623465][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 4980.623467][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 4980.623469][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 4980.623471][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 4980.623474][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 4980.623476][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4980.623481][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 4980.623484][    C2] PKRU: 55555554
[ 4980.623485][    C2] Call Trace:
[ 4980.623487][    C2]  <TASK>
[ 4980.623490][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4980.623498][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4980.623503][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4980.623506][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4980.623511][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4980.623518][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 4980.623522][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 4980.623529][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4980.623532][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 4980.623535][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 4980.623540][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 4980.623545][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 4980.623551][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 4980.623558][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 4980.623566][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4980.623569][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 4980.623572][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4980.623575][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4980.623578][ C2] ? release_sock (net/core/sock.c:3747) 
[ 4980.623584][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 4980.623588][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4980.623595][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 4980.623599][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4980.623603][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 4980.623609][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4980.623613][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4980.623618][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 4980.623623][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4980.623630][ C2] ? ksys_write (fs/read_write.c:738) 
[ 4980.623637][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4980.623640][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 4980.623643][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 4980.623647][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4980.623650][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 4980.623658][ C2] ksys_write (fs/read_write.c:738) 
[ 4980.623661][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4980.623664][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4980.623671][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4980.623675][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4980.623679][    C2] RIP: 0033:0x7f471c970337
[ 4980.623689][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 4980.623691][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4980.623694][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 4980.623696][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 4980.623698][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 4980.623700][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 4980.623702][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5008.513015][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5008.513021][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5008.513033][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5008.513056][    C2] Tainted: [L]=SOFTLOCKUP
[ 5008.513058][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5008.513062][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5008.513069][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5008.513074][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5008.513079][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5008.513082][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5008.513085][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5008.513088][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5008.513092][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5008.513095][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5008.513098][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5008.513103][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5008.513105][    C2] PKRU: 55555554
[ 5008.513106][    C2] Call Trace:
[ 5008.513115][    C2]  <TASK>
[ 5008.513122][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5008.513130][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5008.513141][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5008.513144][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5008.513151][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5008.513158][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5008.513165][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5008.513172][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5008.513175][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5008.513178][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5008.513184][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5008.513191][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5008.513196][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5008.513207][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5008.513216][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5008.513219][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5008.513222][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5008.513225][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5008.513228][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5008.513238][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5008.513243][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5008.513253][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5008.513257][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5008.513261][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5008.513273][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5008.513277][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5008.513286][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5008.513292][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5008.513300][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5008.513310][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5008.513315][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5008.513318][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5008.513322][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5008.513327][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5008.513335][ C2] ksys_write (fs/read_write.c:738) 
[ 5008.513339][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5008.513342][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5008.513352][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5008.513358][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5008.513365][    C2] RIP: 0033:0x7f471c970337
[ 5008.513382][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5008.513385][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5008.513389][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5008.513391][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5008.513394][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5008.513396][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5008.513399][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5036.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5036.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5036.512994][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5036.513011][    C2] Tainted: [L]=SOFTLOCKUP
[ 5036.513012][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5036.513015][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5036.513020][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5036.513024][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5036.513027][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5036.513030][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5036.513032][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5036.513034][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5036.513036][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5036.513038][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5036.513041][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5036.513045][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5036.513047][    C2] PKRU: 55555554
[ 5036.513049][    C2] Call Trace:
[ 5036.513053][    C2]  <TASK>
[ 5036.513057][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5036.513065][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5036.513071][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5036.513074][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5036.513079][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5036.513084][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5036.513088][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5036.513095][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5036.513098][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5036.513101][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5036.513106][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5036.513112][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5036.513118][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5036.513127][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5036.513135][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5036.513137][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5036.513140][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5036.513143][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5036.513146][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5036.513154][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5036.513158][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5036.513166][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5036.513169][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5036.513173][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5036.513180][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5036.513185][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5036.513191][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5036.513196][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5036.513203][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5036.513212][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5036.513215][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5036.513218][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5036.513222][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5036.513226][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5036.513234][ C2] ksys_write (fs/read_write.c:738) 
[ 5036.513238][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5036.513240][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5036.513248][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5036.513253][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5036.513258][    C2] RIP: 0033:0x7f471c970337
[ 5036.513269][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5036.513271][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5036.513275][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5036.513277][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5036.513279][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5036.513281][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5036.513283][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5043.614226][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5043.614526][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 5043.614788][    C2] NMI backtrace for cpu 2
| [ 5043.614804][    C2] Tainted: [L]=SOFTLOCKUP
[ 5043.614805][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5043.614807][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5043.614820][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5043.614824][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5043.614828][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5043.614830][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5043.614832][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5043.614834][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5043.614837][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5043.614839][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5043.614842][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5043.614845][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5043.614847][    C2] PKRU: 55555554
[ 5043.614849][    C2] Call Trace:
[ 5043.614851][    C2]  <TASK>
[ 5043.614855][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5043.614863][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5043.614868][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5043.614871][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5043.614876][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5043.614884][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5043.614888][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5043.614894][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5043.614897][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5043.614900][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5043.614905][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5043.614911][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5043.614917][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5043.614926][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5043.614934][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5043.614936][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5043.614940][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5043.614943][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5043.614946][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5043.614953][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5043.614957][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5043.614965][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5043.614969][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5043.614973][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5043.614980][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5043.614984][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5043.614991][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5043.614996][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5043.615003][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5043.615011][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5043.615015][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5043.615017][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5043.615021][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5043.615025][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5043.615032][ C2] ksys_write (fs/read_write.c:738) 
[ 5043.615036][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5043.615039][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5043.615046][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5043.615051][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5043.615055][    C2] RIP: 0033:0x7f471c970337
[ 5043.615065][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5043.615067][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5043.615070][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5043.615072][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5043.615075][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5043.615077][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5043.615079][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5058.625321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5058.625722][    C2] rcu: 2-....: (2831844 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1106896
| [ 5058.626261][    C2] rcu: (t=2834108 jiffies g=1286133 q=52807 ncpus=4)
| [ 5058.626519][    C2] Tainted: [L]=SOFTLOCKUP
[ 5058.626521][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5058.626523][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5058.626535][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5058.626539][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5058.626543][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5058.626546][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5058.626548][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5058.626550][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5058.626552][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5058.626555][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5058.626557][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5058.626562][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5058.626564][    C2] PKRU: 55555554
[ 5058.626565][    C2] Call Trace:
[ 5058.626567][    C2]  <TASK>
[ 5058.626570][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5058.626578][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5058.626583][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5058.626586][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5058.626592][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5058.626600][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5058.626604][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5058.626611][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5058.626613][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5058.626616][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5058.626622][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5058.626628][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5058.626633][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5058.626642][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5058.626649][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5058.626652][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5058.626655][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5058.626658][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5058.626661][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5058.626669][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5058.626672][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5058.626680][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5058.626684][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5058.626688][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5058.626695][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5058.626699][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5058.626706][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5058.626711][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5058.626718][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5058.626726][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5058.626729][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5058.626732][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5058.626736][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5058.626739][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5058.626747][ C2] ksys_write (fs/read_write.c:738) 
[ 5058.626750][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5058.626753][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5058.626760][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5058.626765][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5058.626769][    C2] RIP: 0033:0x7f471c970337
[ 5058.626779][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5058.626780][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5058.626784][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5058.626786][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5058.626788][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5058.626790][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5058.626792][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5084.512980][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5084.512985][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5084.512992][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5084.513007][    C2] Tainted: [L]=SOFTLOCKUP
[ 5084.513009][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5084.513012][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5084.513018][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5084.513021][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5084.513025][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5084.513027][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5084.513029][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5084.513031][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5084.513034][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5084.513036][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5084.513039][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5084.513043][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5084.513045][    C2] PKRU: 55555554
[ 5084.513046][    C2] Call Trace:
[ 5084.513050][    C2]  <TASK>
[ 5084.513055][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5084.513062][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5084.513069][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5084.513072][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5084.513077][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5084.513082][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5084.513086][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5084.513094][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5084.513097][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5084.513100][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5084.513105][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5084.513111][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5084.513116][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5084.513125][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5084.513133][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5084.513136][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5084.513139][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5084.513142][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5084.513145][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5084.513152][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5084.513156][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5084.513164][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5084.513168][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5084.513173][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5084.513180][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5084.513184][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5084.513190][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5084.513196][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5084.513203][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5084.513212][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5084.513216][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5084.513219][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5084.513223][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5084.513227][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5084.513234][ C2] ksys_write (fs/read_write.c:738) 
[ 5084.513238][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5084.513240][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5084.513249][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5084.513253][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5084.513258][    C2] RIP: 0033:0x7f471c970337
[ 5084.513268][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5084.513270][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5084.513273][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5084.513276][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5084.513278][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5084.513280][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5084.513282][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5112.512981][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5112.512985][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5112.512993][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5112.513009][    C2] Tainted: [L]=SOFTLOCKUP
[ 5112.513010][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5112.513013][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5112.513019][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5112.513022][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5112.513026][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5112.513028][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5112.513030][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5112.513033][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5112.513035][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5112.513037][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5112.513040][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5112.513044][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5112.513046][    C2] PKRU: 55555554
[ 5112.513048][    C2] Call Trace:
[ 5112.513052][    C2]  <TASK>
[ 5112.513056][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5112.513064][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5112.513071][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5112.513074][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5112.513079][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5112.513084][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5112.513088][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5112.513095][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5112.513098][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5112.513101][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5112.513106][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5112.513112][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5112.513118][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5112.513127][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5112.513139][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5112.513142][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5112.513145][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5112.513148][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5112.513151][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5112.513159][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5112.513163][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5112.513171][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5112.513175][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5112.513179][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5112.513186][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5112.513191][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5112.513198][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5112.513204][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5112.513210][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5112.513219][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5112.513223][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5112.513225][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5112.513230][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5112.513234][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5112.513241][ C2] ksys_write (fs/read_write.c:738) 
[ 5112.513245][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5112.513248][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5112.513256][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5112.513260][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5112.513266][    C2] RIP: 0033:0x7f471c970337
[ 5112.513276][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5112.513278][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5112.513281][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5112.513284][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5112.513286][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5112.513288][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5112.513290][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5136.628320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5136.628668][    C2] rcu: 2-....: (2909798 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1145846
| [ 5136.629226][    C2] rcu: (t=2912111 jiffies g=1286133 q=53830 ncpus=4)
| [ 5136.629485][    C2] Tainted: [L]=SOFTLOCKUP
[ 5136.629486][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5136.629489][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5136.629503][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5136.629506][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5136.629510][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5136.629513][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5136.629515][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5136.629517][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5136.629519][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5136.629521][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5136.629524][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5136.629528][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5136.629530][    C2] PKRU: 55555554
[ 5136.629532][    C2] Call Trace:
[ 5136.629533][    C2]  <TASK>
[ 5136.629536][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5136.629544][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5136.629549][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5136.629552][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5136.629558][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5136.629566][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5136.629570][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5136.629577][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5136.629580][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5136.629582][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5136.629588][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5136.629593][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5136.629599][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5136.629607][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5136.629616][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5136.629619][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5136.629622][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5136.629625][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5136.629628][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5136.629636][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5136.629639][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5136.629647][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5136.629651][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5136.629655][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5136.629662][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5136.629666][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5136.629673][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5136.629678][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5136.629685][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5136.629693][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5136.629697][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5136.629699][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5136.629703][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5136.629707][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5136.629715][ C2] ksys_write (fs/read_write.c:738) 
[ 5136.629718][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5136.629720][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5136.629729][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5136.629733][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5136.629737][    C2] RIP: 0033:0x7f471c970337
[ 5136.629748][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5136.629750][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5136.629753][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5136.629755][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5136.629757][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5136.629759][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5136.629761][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5141.917909][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5141.918103][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 5141.918274][    C2] NMI backtrace for cpu 2
| [ 5141.918290][    C2] Tainted: [L]=SOFTLOCKUP
[ 5141.918292][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5141.918294][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 5141.918305][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 5141.918308][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 5141.918312][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 5141.918315][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 5141.918318][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 5141.918320][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 5141.918322][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 5141.918325][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5141.918327][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5141.918332][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5141.918334][    C2] PKRU: 55555554
[ 5141.918336][    C2] Call Trace:
[ 5141.918339][    C2]  <IRQ>
[ 5141.918341][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 5141.918351][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 5141.918359][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 5141.918367][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 5141.918374][    C2]  </IRQ>
[ 5141.918375][    C2]  <TASK>
[ 5141.918377][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 5141.918383][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:31) 
[ 5141.918390][ C2] Code: 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
   0:	41 5c                	pop    %r12
   2:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fb2
   7:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
  2a:*	89 f6                	mov    %esi,%esi		<-- trapping instruction
  2c:	31 d2                	xor    %edx,%edx
  2e:	e9 4f f0 ff ff       	jmp    0xfffffffffffff082
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 f6                	mov    %esi,%esi
   2:	31 d2                	xor    %edx,%edx
   4:	e9 4f f0 ff ff       	jmp    0xfffffffffffff058
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 5141.918393][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 5141.918395][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5141.918397][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5141.918399][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5141.918401][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5141.918403][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5141.918408][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5141.918416][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5141.918420][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5141.918427][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5141.918431][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5141.918434][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5141.918439][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5141.918447][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5141.918451][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5141.918457][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5141.918460][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5141.918463][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5141.918468][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5141.918473][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5141.918478][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5141.918487][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5141.918495][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5141.918497][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5141.918501][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5141.918503][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5141.918507][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5141.918513][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5141.918517][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5141.918525][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5141.918529][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5141.918533][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5141.918539][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5141.918544][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5141.918550][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5141.918555][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5141.918562][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5141.918568][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5141.918572][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5141.918574][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5141.918578][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5141.918582][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5141.918589][ C2] ksys_write (fs/read_write.c:738) 
[ 5141.918592][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5141.918595][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5141.918602][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5141.918606][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5141.918608][    C2] RIP: 0033:0x7f471c970337
[ 5141.918618][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5141.918620][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5141.918622][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5141.918625][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5141.918627][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5141.918629][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5141.918631][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5168.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5168.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5168.512995][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5168.513010][    C2] Tainted: [L]=SOFTLOCKUP
[ 5168.513012][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5168.513014][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:31) 
[ 5168.513023][ C2] Code: 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
   0:	41 5c                	pop    %r12
   2:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fb2
   7:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
  2a:*	89 f6                	mov    %esi,%esi		<-- trapping instruction
  2c:	31 d2                	xor    %edx,%edx
  2e:	e9 4f f0 ff ff       	jmp    0xfffffffffffff082
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 f6                	mov    %esi,%esi
   2:	31 d2                	xor    %edx,%edx
   4:	e9 4f f0 ff ff       	jmp    0xfffffffffffff058
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 5168.513027][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 5168.513030][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5168.513032][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5168.513034][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5168.513036][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5168.513038][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5168.513041][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5168.513043][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5168.513047][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5168.513049][    C2] PKRU: 55555554
[ 5168.513051][    C2] Call Trace:
[ 5168.513056][    C2]  <TASK>
[ 5168.513058][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5168.513066][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5168.513074][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5168.513079][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5168.513082][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5168.513088][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5168.513093][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5168.513097][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5168.513104][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5168.513107][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5168.513110][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5168.513115][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5168.513121][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5168.513126][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5168.513135][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5168.513143][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5168.513146][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5168.513150][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5168.513152][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5168.513156][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5168.513163][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5168.513166][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5168.513174][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5168.513178][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5168.513182][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5168.513189][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5168.513193][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5168.513200][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5168.513205][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5168.513212][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5168.513219][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5168.513224][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5168.513226][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5168.513231][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5168.513235][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5168.513242][ C2] ksys_write (fs/read_write.c:738) 
[ 5168.513246][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5168.513249][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5168.513257][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5168.513262][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5168.513267][    C2] RIP: 0033:0x7f471c970337
[ 5168.513278][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5168.513279][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5168.513283][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5168.513285][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5168.513287][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5168.513289][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5168.513291][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5196.512981][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5196.512986][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5196.512993][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5196.513009][    C2] Tainted: [L]=SOFTLOCKUP
[ 5196.513011][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5196.513014][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5196.513020][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5196.513024][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5196.513027][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5196.513029][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5196.513031][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5196.513033][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5196.513036][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5196.513038][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5196.513040][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5196.513044][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5196.513046][    C2] PKRU: 55555554
[ 5196.513048][    C2] Call Trace:
[ 5196.513052][    C2]  <TASK>
[ 5196.513057][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5196.513065][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5196.513071][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5196.513074][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5196.513079][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5196.513084][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5196.513088][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5196.513095][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5196.513098][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5196.513101][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5196.513106][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5196.513112][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5196.513118][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5196.513127][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5196.513135][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5196.513138][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5196.513141][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5196.513144][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5196.513147][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5196.513155][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5196.513159][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5196.513168][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5196.513172][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5196.513176][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5196.513183][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5196.513187][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5196.513194][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5196.513200][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5196.513207][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5196.513215][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5196.513219][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5196.513222][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5196.513226][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5196.513230][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5196.513238][ C2] ksys_write (fs/read_write.c:738) 
[ 5196.513242][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5196.513245][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5196.513253][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5196.513258][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5196.513263][    C2] RIP: 0033:0x7f471c970337
[ 5196.513273][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5196.513275][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5196.513278][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5196.513281][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5196.513283][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5196.513285][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5196.513287][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5214.631323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5214.631860][    C2] rcu: 2-....: (2987729 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1184623
| [ 5214.632264][    C2] rcu: (t=2990114 jiffies g=1286133 q=55262 ncpus=4)
| [ 5214.632540][    C2] Tainted: [L]=SOFTLOCKUP
[ 5214.632542][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5214.632545][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5214.632559][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5214.632563][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5214.632568][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5214.632570][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5214.632572][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5214.632575][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5214.632577][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5214.632579][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5214.632581][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5214.632586][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5214.632588][    C2] PKRU: 55555554
[ 5214.632590][    C2] Call Trace:
[ 5214.632591][    C2]  <TASK>
[ 5214.632594][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5214.632602][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5214.632608][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5214.632611][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5214.632617][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5214.632626][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5214.632630][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5214.632636][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5214.632639][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5214.632642][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5214.632648][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5214.632653][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5214.632659][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5214.632668][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5214.632676][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5214.632679][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5214.632682][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5214.632685][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5214.632688][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5214.632695][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5214.632699][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5214.632706][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5214.632711][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5214.632715][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5214.632721][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5214.632726][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5214.632732][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5214.632738][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5214.632745][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5214.632753][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5214.632756][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5214.632759][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5214.632763][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5214.632767][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5214.632774][ C2] ksys_write (fs/read_write.c:738) 
[ 5214.632777][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5214.632780][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5214.632788][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5214.632793][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5214.632797][    C2] RIP: 0033:0x7f471c970337
[ 5214.632808][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5214.632810][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5214.632813][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5214.632816][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5214.632818][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5214.632821][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5214.632823][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5240.222240][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5240.222580][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 5240.222846][    C2] NMI backtrace for cpu 2
| [ 5240.222864][    C2] Tainted: [L]=SOFTLOCKUP
[ 5240.222866][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5240.222869][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5240.222882][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5240.222885][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5240.222889][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5240.222892][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5240.222894][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5240.222897][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5240.222899][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5240.222901][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5240.222904][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5240.222908][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5240.222910][    C2] PKRU: 55555554
[ 5240.222911][    C2] Call Trace:
[ 5240.222915][    C2]  <TASK>
[ 5240.222920][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5240.222928][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5240.222935][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5240.222938][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5240.222943][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5240.222951][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5240.222955][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5240.222962][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5240.222965][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5240.222968][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5240.222973][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5240.222979][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5240.222985][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5240.222994][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5240.223002][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5240.223005][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5240.223008][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5240.223011][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5240.223014][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5240.223021][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5240.223026][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5240.223034][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5240.223038][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5240.223042][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5240.223049][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5240.223054][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5240.223060][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5240.223066][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5240.223073][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5240.223081][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5240.223085][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5240.223088][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5240.223092][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5240.223096][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5240.223103][ C2] ksys_write (fs/read_write.c:738) 
[ 5240.223106][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5240.223109][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5240.223117][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5240.223122][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5240.223127][    C2] RIP: 0033:0x7f471c970337
[ 5240.223137][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5240.223140][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5240.223143][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5240.223146][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5240.223148][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5240.223150][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5240.223152][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5264.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5264.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5264.512995][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5264.513011][    C2] Tainted: [L]=SOFTLOCKUP
[ 5264.513013][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5264.513016][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5264.513022][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 5264.513026][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5264.513030][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5264.513032][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5264.513034][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5264.513036][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5264.513039][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5264.513041][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5264.513044][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5264.513048][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5264.513050][    C2] PKRU: 55555554
[ 5264.513052][    C2] Call Trace:
[ 5264.513057][    C2]  <TASK>
[ 5264.513063][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5264.513071][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5264.513078][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5264.513082][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5264.513087][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5264.513092][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5264.513096][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5264.513104][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5264.513107][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5264.513110][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5264.513115][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5264.513121][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5264.513126][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5264.513136][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5264.513144][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5264.513147][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5264.513150][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5264.513153][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5264.513156][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5264.513163][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5264.513168][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5264.513176][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5264.513179][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5264.513184][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5264.513191][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5264.513195][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5264.513202][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5264.513208][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5264.513215][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5264.513224][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5264.513228][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5264.513231][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5264.513236][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5264.513240][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5264.513247][ C2] ksys_write (fs/read_write.c:738) 
[ 5264.513251][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5264.513254][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5264.513262][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5264.513267][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5264.513273][    C2] RIP: 0033:0x7f471c970337
[ 5264.513284][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5264.513286][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5264.513290][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5264.513292][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5264.513295][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5264.513297][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5264.513299][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5292.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5292.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5292.512994][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5292.513011][    C2] Tainted: [L]=SOFTLOCKUP
[ 5292.513012][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5292.513015][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5292.513021][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5292.513024][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5292.513028][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5292.513030][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5292.513033][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5292.513035][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5292.513037][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5292.513039][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5292.513042][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5292.513046][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5292.513048][    C2] PKRU: 55555554
[ 5292.513050][    C2] Call Trace:
[ 5292.513055][    C2]  <TASK>
[ 5292.513060][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5292.513068][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5292.513075][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5292.513078][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5292.513083][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5292.513088][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5292.513092][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5292.513099][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5292.513102][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5292.513105][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5292.513110][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5292.513116][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5292.513122][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5292.513131][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5292.513139][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5292.513141][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5292.513145][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5292.513148][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5292.513151][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5292.513158][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5292.513163][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5292.513171][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5292.513174][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5292.513179][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5292.513186][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5292.513190][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5292.513197][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5292.513203][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5292.513210][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5292.513218][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5292.513223][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5292.513225][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5292.513230][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5292.513233][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5292.513241][ C2] ksys_write (fs/read_write.c:738) 
[ 5292.513245][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5292.513248][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5292.513256][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5292.513261][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5292.513266][    C2] RIP: 0033:0x7f471c970337
[ 5292.513277][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5292.513279][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5292.513282][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5292.513285][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5292.513287][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5292.513289][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5292.513292][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5292.634320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5292.634634][    C2] rcu: 2-....: (3065666 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1223486
| [ 5292.635169][    C2] rcu: (t=3068117 jiffies g=1286133 q=56607 ncpus=4)
| [ 5292.635436][    C2] Tainted: [L]=SOFTLOCKUP
[ 5292.635437][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5292.635440][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5292.635453][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5292.635457][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5292.635461][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5292.635464][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5292.635466][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5292.635469][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5292.635471][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5292.635474][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5292.635476][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5292.635480][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5292.635483][    C2] PKRU: 55555554
[ 5292.635484][    C2] Call Trace:
[ 5292.635486][    C2]  <TASK>
[ 5292.635489][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5292.635496][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5292.635502][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5292.635505][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5292.635509][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5292.635518][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5292.635522][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5292.635528][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5292.635531][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5292.635534][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5292.635539][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5292.635545][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5292.635550][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5292.635559][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5292.635567][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5292.635570][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5292.635573][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5292.635575][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5292.635578][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5292.635586][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5292.635590][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5292.635597][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5292.635601][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5292.635605][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5292.635612][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5292.635617][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5292.635623][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5292.635629][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5292.635635][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5292.635643][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5292.635647][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5292.635650][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5292.635654][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5292.635658][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5292.635665][ C2] ksys_write (fs/read_write.c:738) 
[ 5292.635669][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5292.635671][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5292.635679][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5292.635684][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5292.635687][    C2] RIP: 0033:0x7f471c970337
[ 5292.635698][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5292.635699][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5292.635703][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5292.635705][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5292.635708][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5292.635710][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5292.635712][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5320.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5320.512988][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5320.512996][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5320.513013][    C2] Tainted: [L]=SOFTLOCKUP
[ 5320.513014][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5320.513017][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5320.513023][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5320.513027][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5320.513031][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5320.513033][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5320.513035][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5320.513038][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5320.513040][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5320.513042][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5320.513045][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5320.513050][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5320.513052][    C2] PKRU: 55555554
[ 5320.513053][    C2] Call Trace:
[ 5320.513058][    C2]  <TASK>
[ 5320.513064][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5320.513072][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5320.513079][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5320.513082][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5320.513087][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5320.513092][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5320.513096][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5320.513103][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5320.513106][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5320.513109][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5320.513114][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5320.513120][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5320.513126][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5320.513135][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5320.513143][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5320.513146][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5320.513149][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5320.513152][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5320.513155][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5320.513163][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5320.513167][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5320.513175][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5320.513179][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5320.513183][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5320.513190][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5320.513195][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5320.513202][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5320.513208][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5320.513215][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5320.513223][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5320.513227][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5320.513230][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5320.513234][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5320.513238][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5320.513246][ C2] ksys_write (fs/read_write.c:738) 
[ 5320.513250][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5320.513253][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5320.513261][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5320.513266][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5320.513271][    C2] RIP: 0033:0x7f471c970337
[ 5320.513282][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5320.513285][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5320.513288][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5320.513290][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5320.513292][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5320.513295][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5320.513297][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5338.525894][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5338.526112][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 5338.526382][    C2] NMI backtrace for cpu 2
| [ 5338.526400][    C2] Tainted: [L]=SOFTLOCKUP
[ 5338.526402][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5338.526405][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5338.526418][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5338.526422][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5338.526426][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5338.526429][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5338.526431][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5338.526433][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5338.526435][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5338.526437][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5338.526440][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5338.526444][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5338.526446][    C2] PKRU: 55555554
[ 5338.526447][    C2] Call Trace:
[ 5338.526451][    C2]  <TASK>
[ 5338.526457][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5338.526465][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5338.526472][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5338.526475][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5338.526480][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5338.526489][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5338.526494][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5338.526500][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5338.526503][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5338.526506][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5338.526511][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5338.526518][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5338.526523][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5338.526532][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5338.526540][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5338.526543][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5338.526546][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5338.526549][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5338.526552][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5338.526560][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5338.526564][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5338.526572][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5338.526576][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5338.526581][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5338.526588][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5338.526592][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5338.526599][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5338.526605][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5338.526612][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5338.526620][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5338.526624][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5338.526627][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5338.526631][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5338.526635][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5338.526642][ C2] ksys_write (fs/read_write.c:738) 
[ 5338.526646][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5338.526649][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5338.526657][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5338.526662][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5338.526667][    C2] RIP: 0033:0x7f471c970337
[ 5338.526678][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5338.526680][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5338.526683][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5338.526686][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5338.526688][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5338.526690][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5338.526692][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5364.512986][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5364.512990][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5364.512998][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5364.513015][    C2] Tainted: [L]=SOFTLOCKUP
[ 5364.513018][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5364.513021][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5364.513027][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5364.513031][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5364.513034][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5364.513036][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5364.513039][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5364.513041][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5364.513043][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5364.513046][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5364.513049][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5364.513053][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5364.513055][    C2] PKRU: 55555554
[ 5364.513056][    C2] Call Trace:
[ 5364.513062][    C2]  <TASK>
[ 5364.513068][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5364.513076][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5364.513083][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5364.513086][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5364.513091][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5364.513097][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5364.513101][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5364.513108][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5364.513111][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5364.513114][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5364.513119][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5364.513126][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5364.513131][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5364.513140][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5364.513148][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5364.513151][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5364.513155][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5364.513157][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5364.513160][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5364.513168][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5364.513172][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5364.513181][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5364.513185][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5364.513189][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5364.513196][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5364.513200][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5364.513207][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5364.513213][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5364.513220][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5364.513228][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5364.513232][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5364.513235][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5364.513239][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5364.513243][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5364.513251][ C2] ksys_write (fs/read_write.c:738) 
[ 5364.513255][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5364.513257][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5364.513265][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5364.513271][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5364.513276][    C2] RIP: 0033:0x7f471c970337
[ 5364.513287][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5364.513289][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5364.513293][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5364.513296][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5364.513298][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5364.513300][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5364.513302][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5370.637323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5370.637682][    C2] rcu: 2-....: (3143603 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1262410
| [ 5370.638217][    C2] rcu: (t=3146120 jiffies g=1286133 q=57952 ncpus=4)
| [ 5370.638477][    C2] Tainted: [L]=SOFTLOCKUP
[ 5370.638478][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5370.638481][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5370.638494][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5370.638497][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5370.638502][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5370.638505][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5370.638507][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5370.638509][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5370.638511][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5370.638514][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5370.638517][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5370.638521][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5370.638523][    C2] PKRU: 55555554
[ 5370.638525][    C2] Call Trace:
[ 5370.638527][    C2]  <TASK>
[ 5370.638529][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5370.638537][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5370.638543][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5370.638546][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5370.638552][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5370.638560][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5370.638564][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5370.638571][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5370.638573][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5370.638576][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5370.638582][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5370.638588][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5370.638593][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5370.638603][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5370.638611][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5370.638614][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5370.638617][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5370.638620][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5370.638623][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5370.638631][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5370.638634][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5370.638641][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5370.638646][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5370.638650][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5370.638656][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5370.638661][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5370.638667][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5370.638672][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5370.638679][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5370.638687][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5370.638690][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5370.638693][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5370.638697][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5370.638701][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5370.638709][ C2] ksys_write (fs/read_write.c:738) 
[ 5370.638712][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5370.638715][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5370.638723][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5370.638727][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5370.638731][    C2] RIP: 0033:0x7f471c970337
[ 5370.638742][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5370.638744][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5370.638748][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5370.638750][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5370.638752][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5370.638754][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5370.638756][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5396.512984][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5396.512989][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5396.512997][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5396.513013][    C2] Tainted: [L]=SOFTLOCKUP
[ 5396.513016][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5396.513018][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5396.513024][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5396.513028][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5396.513032][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5396.513034][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5396.513037][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5396.513039][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5396.513041][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5396.513044][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5396.513047][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5396.513052][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5396.513054][    C2] PKRU: 55555554
[ 5396.513055][    C2] Call Trace:
[ 5396.513060][    C2]  <TASK>
[ 5396.513065][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5396.513073][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5396.513081][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5396.513084][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5396.513089][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5396.513094][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5396.513098][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5396.513106][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5396.513109][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5396.513112][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5396.513117][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5396.513123][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5396.513128][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5396.513138][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5396.513146][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5396.513149][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5396.513152][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5396.513155][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5396.513158][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5396.513166][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5396.513170][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5396.513178][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5396.513181][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5396.513185][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5396.513192][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5396.513197][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5396.513203][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5396.513209][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5396.513216][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5396.513224][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5396.513228][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5396.513231][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5396.513235][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5396.513239][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5396.513247][ C2] ksys_write (fs/read_write.c:738) 
[ 5396.513250][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5396.513253][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5396.513261][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5396.513267][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5396.513272][    C2] RIP: 0033:0x7f471c970337
[ 5396.513283][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5396.513285][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5396.513288][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5396.513290][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5396.513293][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5396.513295][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5396.513297][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5424.512986][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5424.512991][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5424.512999][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5424.513015][    C2] Tainted: [L]=SOFTLOCKUP
[ 5424.513017][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5424.513020][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 5424.513029][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 5424.513032][    C2] RSP: 0018:ffffc9000029f5b8 EFLAGS: 00000282
[ 5424.513036][    C2] RAX: ffff88800b85eb34 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5424.513039][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5424.513041][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5424.513043][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5424.513045][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5424.513047][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5424.513050][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5424.513055][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5424.513057][    C2] PKRU: 55555554
[ 5424.513058][    C2] Call Trace:
[ 5424.513063][    C2]  <TASK>
[ 5424.513068][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5424.513075][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5424.513082][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5424.513088][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5424.513091][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5424.513096][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5424.513101][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5424.513106][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5424.513113][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5424.513115][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5424.513118][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5424.513123][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5424.513130][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5424.513135][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5424.513144][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5424.513152][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5424.513155][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5424.513158][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5424.513161][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5424.513164][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5424.513171][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5424.513176][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5424.513184][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5424.513188][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5424.513192][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5424.513199][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5424.513204][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5424.513210][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5424.513217][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5424.513223][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5424.513230][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5424.513234][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5424.513237][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5424.513241][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5424.513245][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5424.513252][ C2] ksys_write (fs/read_write.c:738) 
[ 5424.513257][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5424.513259][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5424.513267][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5424.513273][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5424.513278][    C2] RIP: 0033:0x7f471c970337
[ 5424.513290][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5424.513292][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5424.513295][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5424.513297][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5424.513300][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5424.513302][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5424.513304][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5436.830047][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5436.830358][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 5436.830783][    C2] NMI backtrace for cpu 2
| [ 5436.830804][    C2] Tainted: [L]=SOFTLOCKUP
[ 5436.830806][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5436.830809][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5436.830823][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5436.830827][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5436.830831][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5436.830834][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5436.830836][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5436.830839][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5436.830841][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5436.830843][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5436.830845][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5436.830849][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5436.830852][    C2] PKRU: 55555554
[ 5436.830853][    C2] Call Trace:
[ 5436.830857][    C2]  <TASK>
[ 5436.830862][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5436.830869][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5436.830875][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5436.830878][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5436.830883][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5436.830892][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5436.830896][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5436.830903][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5436.830906][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5436.830909][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5436.830914][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5436.830920][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5436.830925][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5436.830934][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5436.830942][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5436.830945][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5436.830949][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5436.830952][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5436.830955][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5436.830962][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5436.830966][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5436.830974][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5436.830978][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5436.830982][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5436.830989][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5436.830994][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5436.831000][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5436.831006][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5436.831013][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5436.831021][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5436.831025][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5436.831028][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5436.831032][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5436.831037][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5436.831044][ C2] ksys_write (fs/read_write.c:738) 
[ 5436.831048][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5436.831051][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5436.831058][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5436.831063][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5436.831068][    C2] RIP: 0033:0x7f471c970337
[ 5436.831078][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5436.831080][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5436.831083][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5436.831085][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5436.831088][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5436.831090][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5436.831091][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5448.640323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5448.640839][    C2] rcu: 2-....: (3221540 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1300613
| [ 5448.641216][    C2] rcu: (t=3224123 jiffies g=1286133 q=59300 ncpus=4)
| [ 5448.641476][    C2] Tainted: [L]=SOFTLOCKUP
[ 5448.641477][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5448.641480][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5448.641495][ C2] Code: 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d 3f e5 fd <41> 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44
All code
========
   0:	01 00                	add    %eax,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	49 c1 ee 03          	shr    $0x3,%r14
   8:	41 83 e5 07          	and    $0x7,%r13d
   c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  13:	fc ff df 
  16:	49 01 c6             	add    %rax,%r14
  19:	41 83 c5 03          	add    $0x3,%r13d
  1d:	be 04 00 00 00       	mov    $0x4,%esi
  22:	48 89 ef             	mov    %rbp,%rdi
  25:	e8 5d 3f e5 fd       	call   0xfffffffffde53f87
  2a:*	41 0f b6 06          	movzbl (%r14),%eax		<-- trapping instruction
  2e:	41 38 c5             	cmp    %al,%r13b
  31:	7c 08                	jl     0x3b
  33:	84 c0                	test   %al,%al
  35:	0f 85 8d 07 00 00    	jne    0x7c8
  3b:	8b 45 00             	mov    0x0(%rbp),%eax
  3e:	89                   	.byte 0x89
  3f:	44                   	rex.R

Code starting with the faulting instruction
===========================================
   0:	41 0f b6 06          	movzbl (%r14),%eax
   4:	41 38 c5             	cmp    %al,%r13b
   7:	7c 08                	jl     0x11
   9:	84 c0                	test   %al,%al
   b:	0f 85 8d 07 00 00    	jne    0x79e
  11:	8b 45 00             	mov    0x0(%rbp),%eax
  14:	89                   	.byte 0x89
  15:	44                   	rex.R
[ 5448.641498][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000246
[ 5448.641503][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5448.641506][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5448.641508][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5448.641510][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5448.641512][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5448.641515][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5448.641518][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5448.641522][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5448.641524][    C2] PKRU: 55555554
[ 5448.641525][    C2] Call Trace:
[ 5448.641527][    C2]  <TASK>
[ 5448.641529][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5448.641537][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5448.641544][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5448.641547][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5448.641553][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5448.641561][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5448.641565][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5448.641572][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5448.641575][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5448.641577][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5448.641583][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5448.641588][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5448.641594][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5448.641604][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5448.641612][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5448.641615][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5448.641618][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5448.641621][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5448.641625][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5448.641632][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5448.641635][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5448.641643][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5448.641647][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5448.641652][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5448.641659][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5448.641663][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5448.641670][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5448.641676][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5448.641682][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5448.641692][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5448.641695][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5448.641698][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5448.641702][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5448.641706][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5448.641714][ C2] ksys_write (fs/read_write.c:738) 
[ 5448.641717][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5448.641720][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5448.641729][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5448.641733][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5448.641737][    C2] RIP: 0033:0x7f471c970337
[ 5448.641750][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5448.641752][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5448.641755][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5448.641757][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5448.641760][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5448.641762][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5448.641764][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5476.513020][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5476.513026][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5476.513038][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5476.513062][    C2] Tainted: [L]=SOFTLOCKUP
[ 5476.513064][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5476.513068][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5476.513075][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5476.513080][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5476.513085][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5476.513088][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5476.513091][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5476.513094][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5476.513097][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5476.513100][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5476.513103][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5476.513108][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5476.513111][    C2] PKRU: 55555554
[ 5476.513112][    C2] Call Trace:
[ 5476.513121][    C2]  <TASK>
[ 5476.513129][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5476.513138][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5476.513150][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5476.513153][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5476.513161][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5476.513167][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5476.513173][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5476.513181][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5476.513185][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5476.513188][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5476.513193][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5476.513200][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5476.513206][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5476.513221][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5476.513230][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5476.513233][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5476.513237][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5476.513240][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5476.513244][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5476.513253][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5476.513259][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5476.513268][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5476.513272][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5476.513277][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5476.513287][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5476.513292][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5476.513302][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5476.513309][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5476.513317][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5476.513329][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5476.513335][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5476.513338][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5476.513343][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5476.513347][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5476.513355][ C2] ksys_write (fs/read_write.c:738) 
[ 5476.513361][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5476.513363][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5476.513374][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5476.513381][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5476.513387][    C2] RIP: 0033:0x7f471c970337
[ 5476.513408][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5476.513410][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5476.513414][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5476.513417][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5476.513419][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5476.513422][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5476.513424][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5504.512986][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5504.512991][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5504.512999][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5504.513016][    C2] Tainted: [L]=SOFTLOCKUP
[ 5504.513018][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5504.513021][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5504.513027][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 5504.513031][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5504.513035][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5504.513038][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5504.513040][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5504.513042][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5504.513045][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5504.513048][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5504.513051][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5504.513055][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5504.513057][    C2] PKRU: 55555554
[ 5504.513059][    C2] Call Trace:
[ 5504.513064][    C2]  <TASK>
[ 5504.513069][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5504.513077][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5504.513085][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5504.513088][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5504.513094][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5504.513099][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5504.513103][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5504.513110][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5504.513114][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5504.513116][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5504.513121][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5504.513128][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5504.513133][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5504.513142][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5504.513150][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5504.513153][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5504.513157][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5504.513160][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5504.513163][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5504.513171][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5504.513175][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5504.513184][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5504.513188][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5504.513192][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5504.513199][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5504.513203][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5504.513210][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5504.513216][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5504.513223][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5504.513231][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5504.513235][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5504.513238][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5504.513242][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5504.513246][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5504.513254][ C2] ksys_write (fs/read_write.c:738) 
[ 5504.513258][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5504.513261][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5504.513269][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5504.513274][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5504.513279][    C2] RIP: 0033:0x7f471c970337
[ 5504.513294][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5504.513295][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5504.513299][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5504.513301][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5504.513303][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5504.513306][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5504.513308][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5526.643323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5526.643755][    C2] rcu: 2-....: (3299492 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1339101
| [ 5526.644283][    C2] rcu: (t=3302126 jiffies g=1286133 q=60323 ncpus=4)
| [ 5526.644542][    C2] Tainted: [L]=SOFTLOCKUP
[ 5526.644544][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5526.644547][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5526.644560][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 5526.644563][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5526.644568][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5526.644570][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5526.644573][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5526.644575][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5526.644577][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5526.644579][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5526.644582][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5526.644586][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5526.644588][    C2] PKRU: 55555554
[ 5526.644590][    C2] Call Trace:
[ 5526.644591][    C2]  <TASK>
[ 5526.644594][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5526.644602][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5526.644608][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5526.644611][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5526.644616][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5526.644624][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5526.644628][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5526.644635][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5526.644637][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5526.644640][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5526.644646][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5526.644651][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5526.644657][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5526.644666][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5526.644674][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5526.644677][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5526.644680][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5526.644684][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5526.644687][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5526.644694][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5526.644698][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5526.644705][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5526.644710][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5526.644714][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5526.644720][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5526.644725][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5526.644731][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5526.644736][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5526.644744][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5526.644752][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5526.644756][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5526.644758][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5526.644763][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5526.644767][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5526.644774][ C2] ksys_write (fs/read_write.c:738) 
[ 5526.644778][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5526.644781][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5526.644789][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5526.644794][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5526.644797][    C2] RIP: 0033:0x7f471c970337
[ 5526.644809][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5526.644811][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5526.644814][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5526.644816][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5526.644818][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5526.644820][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5526.644822][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5535.134838][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5535.135110][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 5535.135283][    C2] NMI backtrace for cpu 2
| [ 5535.135306][    C2] Tainted: [L]=SOFTLOCKUP
[ 5535.135308][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5535.135311][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 5535.135324][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 5535.135328][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 5535.135333][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 5535.135335][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 5535.135338][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 5535.135340][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 5535.135342][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 5535.135344][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5535.135347][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5535.135351][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5535.135353][    C2] PKRU: 55555554
[ 5535.135354][    C2] Call Trace:
[ 5535.135359][    C2]  <IRQ>
[ 5535.135361][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 5535.135372][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 5535.135381][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 5535.135389][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 5535.135397][    C2]  </IRQ>
[ 5535.135398][    C2]  <TASK>
[ 5535.135400][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 5535.135406][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5535.135413][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5535.135416][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5535.135419][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5535.135421][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5535.135423][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5535.135425][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5535.135427][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5535.135432][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5535.135438][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5535.135445][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5535.135451][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5535.135454][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5535.135459][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5535.135468][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5535.135472][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5535.135479][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5535.135482][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5535.135485][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5535.135490][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5535.135497][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5535.135502][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5535.135510][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5535.135518][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5535.135521][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5535.135524][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5535.135527][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5535.135530][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5535.135538][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5535.135542][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5535.135550][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5535.135554][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5535.135558][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5535.135565][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5535.135569][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5535.135576][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5535.135582][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5535.135588][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5535.135596][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5535.135600][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5535.135603][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5535.135607][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5535.135611][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5535.135618][ C2] ksys_write (fs/read_write.c:738) 
[ 5535.135622][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5535.135625][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5535.135632][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5535.135636][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5535.135640][    C2] RIP: 0033:0x7f471c970337
[ 5535.135652][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5535.135654][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5535.135658][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5535.135660][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5535.135662][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5535.135664][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5535.135667][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5560.513010][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5560.513015][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5560.513023][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5560.513038][    C2] Tainted: [L]=SOFTLOCKUP
[ 5560.513040][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5560.513043][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5560.513049][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5560.513052][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5560.513056][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5560.513058][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5560.513061][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5560.513063][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5560.513065][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5560.513067][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5560.513070][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5560.513075][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5560.513077][    C2] PKRU: 55555554
[ 5560.513079][    C2] Call Trace:
[ 5560.513083][    C2]  <TASK>
[ 5560.513088][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5560.513096][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5560.513104][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5560.513107][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5560.513112][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5560.513117][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5560.513122][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5560.513129][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5560.513132][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5560.513135][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5560.513140][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5560.513146][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5560.513152][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5560.513160][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5560.513169][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5560.513172][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5560.513175][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5560.513178][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5560.513181][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5560.513188][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5560.513193][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5560.513201][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5560.513204][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5560.513209][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5560.513216][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5560.513220][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5560.513227][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5560.513233][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5560.513240][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5560.513248][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5560.513253][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5560.513256][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5560.513260][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5560.513264][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5560.513272][ C2] ksys_write (fs/read_write.c:738) 
[ 5560.513276][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5560.513278][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5560.513286][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5560.513292][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5560.513298][    C2] RIP: 0033:0x7f471c970337
[ 5560.513308][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5560.513310][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5560.513314][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5560.513316][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5560.513318][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5560.513320][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5560.513322][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5588.513010][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5588.513015][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5588.513023][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5588.513039][    C2] Tainted: [L]=SOFTLOCKUP
[ 5588.513041][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5588.513044][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5588.513050][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5588.513054][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5588.513058][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5588.513060][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5588.513063][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5588.513065][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5588.513067][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5588.513069][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5588.513072][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5588.513077][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5588.513079][    C2] PKRU: 55555554
[ 5588.513080][    C2] Call Trace:
[ 5588.513085][    C2]  <TASK>
[ 5588.513091][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5588.513099][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5588.513106][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5588.513109][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5588.513114][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5588.513119][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5588.513124][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5588.513131][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5588.513134][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5588.513137][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5588.513142][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5588.513148][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5588.513154][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5588.513162][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5588.513171][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5588.513174][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5588.513177][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5588.513180][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5588.513183][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5588.513191][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5588.513196][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5588.513204][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5588.513208][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5588.513212][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5588.513219][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5588.513224][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5588.513231][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5588.513237][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5588.513244][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5588.513252][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5588.513256][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5588.513259][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5588.513263][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5588.513267][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5588.513275][ C2] ksys_write (fs/read_write.c:738) 
[ 5588.513278][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5588.513281][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5588.513289][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5588.513295][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5588.513300][    C2] RIP: 0033:0x7f471c970337
[ 5588.513311][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5588.513313][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5588.513316][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5588.513318][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5588.513321][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5588.513323][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5588.513325][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5604.646324][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5604.646780][    C2] rcu: 2-....: (3377425 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1374326
| [ 5604.647314][    C2] rcu: (t=3380129 jiffies g=1286133 q=61749 ncpus=4)
| [ 5604.647579][    C2] Tainted: [L]=SOFTLOCKUP
[ 5604.647581][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5604.647584][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5604.647598][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5604.647602][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5604.647606][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5604.647609][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5604.647611][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5604.647613][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5604.647615][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5604.647618][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5604.647621][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5604.647625][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5604.647627][    C2] PKRU: 55555554
[ 5604.647628][    C2] Call Trace:
[ 5604.647630][    C2]  <TASK>
[ 5604.647633][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5604.647641][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5604.647647][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5604.647650][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5604.647655][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5604.647664][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5604.647667][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5604.647674][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5604.647676][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5604.647679][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5604.647685][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5604.647691][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5604.647696][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5604.647705][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5604.647713][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5604.647716][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5604.647719][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5604.647722][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5604.647725][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5604.647733][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5604.647736][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5604.647744][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5604.647748][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5604.647752][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5604.647759][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5604.647764][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5604.647770][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5604.647776][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5604.647782][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5604.647790][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5604.647794][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5604.647797][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5604.647801][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5604.647804][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5604.647812][ C2] ksys_write (fs/read_write.c:738) 
[ 5604.647815][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5604.647818][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5604.647827][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5604.647831][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5604.647835][    C2] RIP: 0033:0x7f471c970337
[ 5604.647846][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5604.647848][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5604.647852][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5604.647854][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5604.647856][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5604.647858][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5604.647860][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5632.513014][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5632.513018][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5632.513026][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5632.513041][    C2] Tainted: [L]=SOFTLOCKUP
[ 5632.513043][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5632.513046][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5632.513052][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5632.513056][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5632.513059][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5632.513062][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5632.513064][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5632.513066][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5632.513068][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5632.513071][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5632.513074][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5632.513078][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5632.513081][    C2] PKRU: 55555554
[ 5632.513082][    C2] Call Trace:
[ 5632.513087][    C2]  <TASK>
[ 5632.513093][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5632.513101][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5632.513107][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5632.513110][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5632.513115][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5632.513121][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5632.513125][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5632.513132][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5632.513136][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5632.513139][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5632.513144][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5632.513150][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5632.513156][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5632.513164][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5632.513172][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5632.513175][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5632.513179][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5632.513181][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5632.513185][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5632.513192][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5632.513197][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5632.513205][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5632.513209][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5632.513213][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5632.513220][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5632.513225][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5632.513232][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5632.513238][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5632.513245][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5632.513253][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5632.513258][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5632.513260][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5632.513265][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5632.513268][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5632.513276][ C2] ksys_write (fs/read_write.c:738) 
[ 5632.513280][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5632.513283][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5632.513291][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5632.513296][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5632.513302][    C2] RIP: 0033:0x7f471c970337
[ 5632.513312][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5632.513314][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5632.513317][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5632.513319][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5632.513321][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5632.513324][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5632.513326][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5633.437843][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5633.438104][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 5633.438280][    C2] NMI backtrace for cpu 2
| [ 5633.438298][    C2] Tainted: [L]=SOFTLOCKUP
[ 5633.438299][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5633.438302][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 5633.438312][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 5633.438317][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 5633.438321][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 5633.438323][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 5633.438325][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 5633.438328][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 5633.438330][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 5633.438332][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5633.438335][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5633.438339][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5633.438341][    C2] PKRU: 55555554
[ 5633.438343][    C2] Call Trace:
[ 5633.438346][    C2]  <IRQ>
[ 5633.438347][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 5633.438357][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 5633.438365][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 5633.438373][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 5633.438380][    C2]  </IRQ>
[ 5633.438381][    C2]  <TASK>
[ 5633.438383][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 5633.438389][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5633.438395][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5633.438398][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5633.438400][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5633.438402][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5633.438405][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5633.438407][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5633.438409][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5633.438412][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5633.438419][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5633.438425][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5633.438430][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5633.438433][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5633.438437][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5633.438446][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5633.438450][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5633.438456][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5633.438458][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5633.438461][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5633.438466][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5633.438472][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5633.438477][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5633.438485][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5633.438493][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5633.438496][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5633.438499][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5633.438502][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5633.438505][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5633.438512][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5633.438516][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5633.438523][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5633.438527][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5633.438531][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5633.438537][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5633.438541][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5633.438548][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5633.438553][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5633.438560][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5633.438568][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5633.438571][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5633.438574][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5633.438577][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5633.438581][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5633.438588][ C2] ksys_write (fs/read_write.c:738) 
[ 5633.438592][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5633.438594][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5633.438602][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5633.438605][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5633.438608][    C2] RIP: 0033:0x7f471c970337
[ 5633.438618][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5633.438619][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5633.438623][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5633.438625][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5633.438627][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5633.438629][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5633.438631][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5660.513000][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5660.513005][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5660.513013][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5660.513029][    C2] Tainted: [L]=SOFTLOCKUP
[ 5660.513031][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5660.513034][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5660.513040][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5660.513044][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5660.513047][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5660.513049][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5660.513051][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5660.513053][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5660.513056][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5660.513058][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5660.513061][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5660.513065][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5660.513067][    C2] PKRU: 55555554
[ 5660.513069][    C2] Call Trace:
[ 5660.513074][    C2]  <TASK>
[ 5660.513080][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5660.513088][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5660.513096][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5660.513099][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5660.513104][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5660.513109][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5660.513113][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5660.513121][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5660.513124][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5660.513127][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5660.513132][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5660.513138][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5660.513143][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5660.513153][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5660.513161][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5660.513164][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5660.513167][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5660.513169][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5660.513172][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5660.513180][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5660.513184][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5660.513193][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5660.513197][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5660.513201][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5660.513208][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5660.513213][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5660.513220][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5660.513225][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5660.513232][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5660.513240][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5660.513245][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5660.513248][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5660.513252][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5660.513256][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5660.513264][ C2] ksys_write (fs/read_write.c:738) 
[ 5660.513267][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5660.513270][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5660.513278][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5660.513284][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5660.513289][    C2] RIP: 0033:0x7f471c970337
[ 5660.513300][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5660.513301][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5660.513304][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5660.513307][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5660.513309][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5660.513311][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5660.513313][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5682.649338][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5682.649761][    C2] rcu: 2-....: (3455360 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1410266
| [ 5682.650302][    C2] rcu: (t=3458132 jiffies g=1286133 q=63175 ncpus=4)
| [ 5682.650571][    C2] Tainted: [L]=SOFTLOCKUP
[ 5682.650573][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5682.650575][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5682.650588][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 5682.650592][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5682.650596][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5682.650599][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5682.650601][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5682.650603][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5682.650605][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5682.650608][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5682.650611][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5682.650614][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5682.650616][    C2] PKRU: 55555554
[ 5682.650618][    C2] Call Trace:
[ 5682.650620][    C2]  <TASK>
[ 5682.650622][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5682.650630][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5682.650636][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5682.650639][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5682.650644][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5682.650653][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5682.650657][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5682.650663][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5682.650666][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5682.650669][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5682.650674][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5682.650680][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5682.650685][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5682.650694][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5682.650701][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5682.650704][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5682.650708][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5682.650710][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5682.650714][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5682.650721][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5682.650725][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5682.650732][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5682.650736][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5682.650741][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5682.650747][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5682.650752][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5682.650758][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5682.650763][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5682.650770][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5682.650779][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5682.650782][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5682.650785][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5682.650788][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5682.650792][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5682.650800][ C2] ksys_write (fs/read_write.c:738) 
[ 5682.650803][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5682.650806][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5682.650814][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5682.650818][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5682.650823][    C2] RIP: 0033:0x7f471c970337
[ 5682.650833][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5682.650835][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5682.650838][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5682.650840][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5682.650843][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5682.650845][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5682.650847][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5708.512984][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5708.512989][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5708.512996][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5708.513014][    C2] Tainted: [L]=SOFTLOCKUP
[ 5708.513016][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5708.513018][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:86 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 5708.513027][ C2] Code: d0 74 11 80 38 00 74 ef 4d 8d 1c 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea <eb> 09 48 83 c0 01 48 39 d0 74 a5 80 38 00 74 f2 e9 74 ff ff ff b8
All code
========
   0:	d0 74 11 80          	shlb   $1,-0x80(%rcx,%rdx,1)
   4:	38 00                	cmp    %al,(%rax)
   6:	74 ef                	je     0xfffffffffffffff7
   8:	4d 8d 1c 2c          	lea    (%r12,%rbp,1),%r11
   c:	48 89 c2             	mov    %rax,%rdx
   f:	48 85 c0             	test   %rax,%rax
  12:	75 b0                	jne    0xffffffffffffffc4
  14:	48 89 da             	mov    %rbx,%rdx
  17:	4c 89 d8             	mov    %r11,%rax
  1a:	4c 29 da             	sub    %r11,%rdx
  1d:	e9 49 ff ff ff       	jmp    0xffffffffffffff6b
  22:	48 85 d2             	test   %rdx,%rdx
  25:	74 b3                	je     0xffffffffffffffda
  27:	48 01 ea             	add    %rbp,%rdx
  2a:*	eb 09                	jmp    0x35		<-- trapping instruction
  2c:	48 83 c0 01          	add    $0x1,%rax
  30:	48 39 d0             	cmp    %rdx,%rax
  33:	74 a5                	je     0xffffffffffffffda
  35:	80 38 00             	cmpb   $0x0,(%rax)
  38:	74 f2                	je     0x2c
  3a:	e9 74 ff ff ff       	jmp    0xffffffffffffffb3
  3f:	b8                   	.byte 0xb8

Code starting with the faulting instruction
===========================================
   0:	eb 09                	jmp    0xb
   2:	48 83 c0 01          	add    $0x1,%rax
   6:	48 39 d0             	cmp    %rdx,%rax
   9:	74 a5                	je     0xffffffffffffffb0
   b:	80 38 00             	cmpb   $0x0,(%rax)
   e:	74 f2                	je     0x2
  10:	e9 74 ff ff ff       	jmp    0xffffffffffffff89
  15:	b8                   	.byte 0xb8
[ 5708.513030][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000282
[ 5708.513034][    C2] RAX: ffffed100170bd66 RBX: ffffed100170bd67 RCX: ffffffffa2cd0f13
[ 5708.513036][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5708.513039][    C2] RBP: ffffed100170bd66 R08: 0000000000000000 R09: ffffed100170bd66
[ 5708.513041][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5708.513043][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5708.513045][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5708.513048][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5708.513052][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5708.513054][    C2] PKRU: 55555554
[ 5708.513055][    C2] Call Trace:
[ 5708.513060][    C2]  <TASK>
[ 5708.513065][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5708.513072][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5708.513079][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5708.513085][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5708.513088][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5708.513093][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5708.513098][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5708.513103][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5708.513110][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5708.513113][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5708.513116][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5708.513121][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5708.513127][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5708.513132][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5708.513141][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5708.513149][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5708.513152][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5708.513155][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5708.513157][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5708.513160][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5708.513168][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5708.513172][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5708.513180][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5708.513184][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5708.513188][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5708.513194][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5708.513199][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5708.513206][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5708.513211][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5708.513218][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5708.513225][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5708.513229][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5708.513232][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5708.513236][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5708.513240][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5708.513248][ C2] ksys_write (fs/read_write.c:738) 
[ 5708.513252][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5708.513254][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5708.513263][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5708.513268][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5708.513272][    C2] RIP: 0033:0x7f471c970337
[ 5708.513283][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5708.513285][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5708.513288][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5708.513290][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5708.513292][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5708.513295][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5708.513297][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5731.743000][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5731.743449][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 5731.743711][    C2] NMI backtrace for cpu 2
| [ 5731.743735][    C2] Tainted: [L]=SOFTLOCKUP
[ 5731.743737][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5731.743740][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5731.743754][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5731.743758][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5731.743762][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5731.743765][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5731.743767][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5731.743770][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5731.743772][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5731.743774][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5731.743777][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5731.743781][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5731.743783][    C2] PKRU: 55555554
[ 5731.743785][    C2] Call Trace:
[ 5731.743789][    C2]  <TASK>
[ 5731.743795][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5731.743803][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5731.743810][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5731.743813][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5731.743818][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5731.743826][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5731.743831][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5731.743837][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5731.743840][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5731.743843][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5731.743848][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5731.743854][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5731.743860][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5731.743869][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5731.743877][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5731.743880][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5731.743883][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5731.743886][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5731.743889][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5731.743896][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5731.743900][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5731.743908][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5731.743912][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5731.743916][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5731.743924][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5731.743929][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5731.743935][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5731.743941][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5731.743947][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5731.743956][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5731.743960][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5731.743963][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5731.743967][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5731.743971][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5731.743978][ C2] ksys_write (fs/read_write.c:738) 
[ 5731.743982][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5731.743985][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5731.743994][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5731.743999][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5731.744004][    C2] RIP: 0033:0x7f471c970337
[ 5731.744014][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5731.744016][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5731.744019][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5731.744022][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5731.744024][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5731.744026][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5731.744028][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5756.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5756.512988][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5756.512995][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5756.513011][    C2] Tainted: [L]=SOFTLOCKUP
[ 5756.513013][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5756.513016][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5756.513021][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5756.513025][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5756.513028][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5756.513031][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5756.513033][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5756.513035][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5756.513037][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5756.513040][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5756.513043][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5756.513048][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5756.513050][    C2] PKRU: 55555554
[ 5756.513052][    C2] Call Trace:
[ 5756.513056][    C2]  <TASK>
[ 5756.513062][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5756.513070][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5756.513077][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5756.513080][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5756.513085][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5756.513090][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5756.513095][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5756.513102][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5756.513105][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5756.513108][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5756.513113][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5756.513119][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5756.513124][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5756.513133][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5756.513141][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5756.513144][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5756.513148][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5756.513150][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5756.513154][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5756.513161][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5756.513165][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5756.513173][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5756.513177][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5756.513181][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5756.513188][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5756.513193][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5756.513200][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5756.513206][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5756.513213][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5756.513221][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5756.513225][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5756.513228][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5756.513232][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5756.513236][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5756.513244][ C2] ksys_write (fs/read_write.c:738) 
[ 5756.513248][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5756.513251][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5756.513259][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5756.513264][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5756.513269][    C2] RIP: 0033:0x7f471c970337
[ 5756.513280][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5756.513281][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5756.513284][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5756.513287][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5756.513289][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5756.513291][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5756.513293][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5760.652348][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5760.652859][    C2] rcu: 2-....: (3533297 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1445454
| [ 5760.653258][    C2] rcu: (t=3536135 jiffies g=1286133 q=64523 ncpus=4)
| [ 5760.653515][    C2] Tainted: [L]=SOFTLOCKUP
[ 5760.653517][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5760.653519][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5760.653532][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5760.653536][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5760.653540][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5760.653542][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5760.653544][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5760.653546][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5760.653548][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5760.653551][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5760.653553][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5760.653557][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5760.653560][    C2] PKRU: 55555554
[ 5760.653561][    C2] Call Trace:
[ 5760.653562][    C2]  <TASK>
[ 5760.653565][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5760.653573][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5760.653578][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5760.653581][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5760.653587][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5760.653594][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5760.653598][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5760.653605][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5760.653608][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5760.653611][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5760.653616][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5760.653621][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5760.653627][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5760.653636][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5760.653644][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5760.653647][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5760.653651][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5760.653654][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5760.653657][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5760.653664][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5760.653667][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5760.653675][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5760.653680][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5760.653684][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5760.653691][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5760.653695][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5760.653702][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5760.653707][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5760.653713][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5760.653722][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5760.653726][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5760.653728][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5760.653732][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5760.653736][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5760.653744][ C2] ksys_write (fs/read_write.c:738) 
[ 5760.653748][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5760.653750][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5760.653759][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5760.653763][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5760.653767][    C2] RIP: 0033:0x7f471c970337
[ 5760.653776][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5760.653778][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5760.653781][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5760.653784][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5760.653786][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5760.653787][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5760.653789][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5788.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5788.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5788.512995][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5788.513011][    C2] Tainted: [L]=SOFTLOCKUP
[ 5788.513012][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5788.513015][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5788.513021][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5788.513025][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5788.513028][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5788.513031][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5788.513033][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5788.513035][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5788.513037][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5788.513039][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5788.513042][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5788.513046][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5788.513049][    C2] PKRU: 55555554
[ 5788.513050][    C2] Call Trace:
[ 5788.513055][    C2]  <TASK>
[ 5788.513060][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5788.513069][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5788.513076][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5788.513079][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5788.513084][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5788.513090][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5788.513094][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5788.513101][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5788.513104][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5788.513107][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5788.513112][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5788.513118][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5788.513124][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5788.513133][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5788.513141][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5788.513144][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5788.513147][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5788.513150][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5788.513153][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5788.513160][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5788.513165][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5788.513173][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5788.513177][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5788.513181][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5788.513188][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5788.513193][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5788.513200][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5788.513205][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5788.513212][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5788.513221][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5788.513225][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5788.513228][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5788.513232][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5788.513236][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5788.513243][ C2] ksys_write (fs/read_write.c:738) 
[ 5788.513247][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5788.513250][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5788.513258][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5788.513264][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5788.513269][    C2] RIP: 0033:0x7f471c970337
[ 5788.513280][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5788.513281][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5788.513285][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5788.513287][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5788.513289][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5788.513292][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5788.513294][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5816.512991][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5816.512995][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5816.513003][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5816.513019][    C2] Tainted: [L]=SOFTLOCKUP
[ 5816.513021][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5816.513024][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5816.513029][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5816.513033][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5816.513037][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5816.513039][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5816.513041][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5816.513044][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5816.513046][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5816.513048][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5816.513051][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5816.513055][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5816.513057][    C2] PKRU: 55555554
[ 5816.513059][    C2] Call Trace:
[ 5816.513064][    C2]  <TASK>
[ 5816.513070][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5816.513077][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5816.513084][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5816.513087][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5816.513092][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5816.513097][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5816.513102][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5816.513109][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5816.513112][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5816.513115][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5816.513120][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5816.513126][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5816.513131][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5816.513140][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5816.513148][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5816.513151][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5816.513154][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5816.513157][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5816.513160][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5816.513167][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5816.513172][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5816.513180][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5816.513183][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5816.513188][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5816.513195][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5816.513199][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5816.513206][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5816.513212][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5816.513219][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5816.513227][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5816.513231][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5816.513234][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5816.513238][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5816.513242][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5816.513249][ C2] ksys_write (fs/read_write.c:738) 
[ 5816.513253][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5816.513256][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5816.513264][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5816.513269][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5816.513273][    C2] RIP: 0033:0x7f471c970337
[ 5816.513284][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5816.513285][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5816.513288][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5816.513290][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5816.513293][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5816.513295][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5816.513296][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5830.045846][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5830.046031][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 5830.046197][    C2] NMI backtrace for cpu 2
| [ 5830.046219][    C2] Tainted: [L]=SOFTLOCKUP
[ 5830.046221][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5830.046224][ C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:312) 
[ 5830.046246][ C2] Code: 89 f3 48 c1 ea 03 48 83 ec 08 80 3c 02 00 0f 85 fc 00 00 00 48 8b 83 28 05 00 00 44 8b 68 60 48 8b 83 28 05 00 00 44 89 68 64 <45> 89 ec 41 83 e4 02 0f 85 b5 00 00 00 41 83 e5 01 0f 84 95 00 00
All code
========
   0:	89 f3                	mov    %esi,%ebx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	48 83 ec 08          	sub    $0x8,%rsp
   a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   e:	0f 85 fc 00 00 00    	jne    0x110
  14:	48 8b 83 28 05 00 00 	mov    0x528(%rbx),%rax
  1b:	44 8b 68 60          	mov    0x60(%rax),%r13d
  1f:	48 8b 83 28 05 00 00 	mov    0x528(%rbx),%rax
  26:	44 89 68 64          	mov    %r13d,0x64(%rax)
  2a:*	45 89 ec             	mov    %r13d,%r12d		<-- trapping instruction
  2d:	41 83 e4 02          	and    $0x2,%r12d
  31:	0f 85 b5 00 00 00    	jne    0xec
  37:	41 83 e5 01          	and    $0x1,%r13d
  3b:	0f                   	.byte 0xf
  3c:	84                   	.byte 0x84
  3d:	95                   	xchg   %eax,%ebp
	...

Code starting with the faulting instruction
===========================================
   0:	45 89 ec             	mov    %r13d,%r12d
   3:	41 83 e4 02          	and    $0x2,%r12d
   7:	0f 85 b5 00 00 00    	jne    0xc2
   d:	41 83 e5 01          	and    $0x1,%r13d
  11:	0f                   	.byte 0xf
  12:	84                   	.byte 0x84
  13:	95                   	xchg   %eax,%ebp
	...
[ 5830.046250][    C2] RSP: 0018:ffffc90000218ec0 EFLAGS: 00000046
[ 5830.046254][    C2] RAX: ffffc9000002ec00 RBX: ffff88800625b800 RCX: ffffffffa0423c21
[ 5830.046257][    C2] RDX: 1ffff11000c4b7a5 RSI: ffff88800625b800 RDI: ffff88800625bd28
[ 5830.046259][    C2] RBP: 0000000000000032 R08: 0000000000000000 R09: fffffbfff490a2fa
[ 5830.046261][    C2] R10: ffffffffa48517d7 R11: ffffc90000218ff8 R12: ffff88800293e400
[ 5830.046263][    C2] R13: 0000000000000001 R14: ffffffffa14624b0 R15: ffff8880062eab00
[ 5830.046265][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5830.046268][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5830.046272][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5830.046275][    C2] PKRU: 55555554
[ 5830.046276][    C2] Call Trace:
[ 5830.046280][    C2]  <IRQ>
[ 5830.046283][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 5830.046293][ C2] ? __pfx_vm_interrupt (drivers/virtio/virtio_mmio.c:301) 
[ 5830.046297][ C2] __handle_irq_event_percpu (kernel/irq/handle.c:159 (discriminator 1)) 
[ 5830.046305][ C2] handle_irq_event (kernel/irq/handle.c:195 kernel/irq/handle.c:210) 
[ 5830.046309][ C2] handle_fasteoi_irq (kernel/irq/chip.c:644 kernel/irq/chip.c:708) 
[ 5830.046317][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 5830.046326][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 5830.046333][    C2]  </IRQ>
[ 5830.046334][    C2]  <TASK>
[ 5830.046336][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 5830.046342][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5830.046349][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5830.046352][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5830.046355][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5830.046357][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5830.046359][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5830.046361][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5830.046363][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5830.046367][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5830.046374][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5830.046381][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5830.046386][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5830.046388][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5830.046393][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5830.046401][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5830.046405][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5830.046412][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5830.046415][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5830.046417][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5830.046422][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5830.046428][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5830.046434][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5830.046442][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5830.046451][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5830.046453][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5830.046457][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5830.046459][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5830.046462][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5830.046470][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5830.046473][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5830.046481][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5830.046485][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5830.046489][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5830.046496][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5830.046500][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5830.046506][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5830.046512][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5830.046518][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5830.046526][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5830.046530][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5830.046532][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5830.046537][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5830.046540][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5830.046547][ C2] ksys_write (fs/read_write.c:738) 
[ 5830.046551][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5830.046554][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5830.046561][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5830.046565][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5830.046568][    C2] RIP: 0033:0x7f471c970337
[ 5830.046579][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5830.046581][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5830.046584][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5830.046586][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5830.046588][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5830.046590][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5830.046592][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5838.655324][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5838.655737][    C2] rcu: 2-....: (3611229 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1481559
| [ 5838.656231][    C2] rcu: (t=3614138 jiffies g=1286133 q=65961 ncpus=4)
| [ 5838.656475][    C2] Tainted: [L]=SOFTLOCKUP
[ 5838.656476][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5838.656479][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5838.656492][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 5838.656495][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5838.656499][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5838.656502][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5838.656504][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5838.656506][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5838.656508][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5838.656510][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5838.656513][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5838.656517][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5838.656519][    C2] PKRU: 55555554
[ 5838.656520][    C2] Call Trace:
[ 5838.656522][    C2]  <TASK>
[ 5838.656524][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5838.656532][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5838.656538][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5838.656541][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5838.656546][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5838.656554][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5838.656558][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5838.656565][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5838.656567][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5838.656570][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5838.656576][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5838.656581][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5838.656586][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5838.656595][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5838.656602][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5838.656605][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5838.656608][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5838.656610][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5838.656613][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5838.656620][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5838.656623][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5838.656630][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5838.656634][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5838.656638][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5838.656644][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5838.656648][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5838.656654][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5838.656659][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5838.656665][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5838.656673][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5838.656676][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5838.656679][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5838.656682][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5838.656686][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5838.656693][ C2] ksys_write (fs/read_write.c:738) 
[ 5838.656696][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5838.656698][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5838.656706][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5838.656710][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5838.656714][    C2] RIP: 0033:0x7f471c970337
[ 5838.656724][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5838.656726][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5838.656730][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5838.656732][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5838.656734][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5838.656736][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5838.656737][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5864.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5864.512986][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5864.512994][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5864.513009][    C2] Tainted: [L]=SOFTLOCKUP
[ 5864.513011][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5864.513014][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 5864.513022][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 5864.513026][    C2] RSP: 0018:ffffc9000029f5b8 EFLAGS: 00000282
[ 5864.513029][    C2] RAX: ffff88800b85eb34 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5864.513031][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5864.513034][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5864.513036][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5864.513038][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5864.513040][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5864.513043][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5864.513047][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5864.513049][    C2] PKRU: 55555554
[ 5864.513051][    C2] Call Trace:
[ 5864.513055][    C2]  <TASK>
[ 5864.513060][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5864.513067][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5864.513074][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5864.513080][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5864.513083][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5864.513087][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5864.513092][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5864.513097][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5864.513104][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5864.513107][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5864.513110][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5864.513115][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5864.513121][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5864.513126][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5864.513135][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5864.513143][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5864.513145][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5864.513149][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5864.513152][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5864.513155][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5864.513162][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5864.513166][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5864.513174][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5864.513178][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5864.513182][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5864.513189][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5864.513194][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5864.513200][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5864.513206][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5864.513212][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5864.513219][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5864.513223][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5864.513226][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5864.513230][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5864.513234][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5864.513241][ C2] ksys_write (fs/read_write.c:738) 
[ 5864.513245][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5864.513247][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5864.513255][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5864.513260][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5864.513264][    C2] RIP: 0033:0x7f471c970337
[ 5864.513275][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5864.513277][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5864.513280][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5864.513282][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5864.513284][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5864.513286][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5864.513288][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5892.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5892.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5892.512994][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5892.513010][    C2] Tainted: [L]=SOFTLOCKUP
[ 5892.513012][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5892.513015][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:103 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 5892.513024][ C2] Code: 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d 59 01 48 89 da <48> 29 ea 48 83 fa 10 0f 8e c0 00 00 00 41 89 eb 41 83 e3 07 75 7d
All code
========
   0:	37                   	(bad)
   1:	ff 48 89             	decl   -0x77(%rax)
   4:	fd                   	std
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	4d 89 d1             	mov    %r10,%r9
  12:	48 c1 ed 03          	shr    $0x3,%rbp
  16:	49 c1 e9 03          	shr    $0x3,%r9
  1a:	48 01 c5             	add    %rax,%rbp
  1d:	49 01 c1             	add    %rax,%r9
  20:	48 89 e8             	mov    %rbp,%rax
  23:	49 8d 59 01          	lea    0x1(%r9),%rbx
  27:	48 89 da             	mov    %rbx,%rdx
  2a:*	48 29 ea             	sub    %rbp,%rdx		<-- trapping instruction
  2d:	48 83 fa 10          	cmp    $0x10,%rdx
  31:	0f 8e c0 00 00 00    	jle    0xf7
  37:	41 89 eb             	mov    %ebp,%r11d
  3a:	41 83 e3 07          	and    $0x7,%r11d
  3e:	75 7d                	jne    0xbd

Code starting with the faulting instruction
===========================================
   0:	48 29 ea             	sub    %rbp,%rdx
   3:	48 83 fa 10          	cmp    $0x10,%rdx
   7:	0f 8e c0 00 00 00    	jle    0xcd
   d:	41 89 eb             	mov    %ebp,%r11d
  10:	41 83 e3 07          	and    $0x7,%r11d
  14:	75 7d                	jne    0x93
[ 5892.513028][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000286
[ 5892.513031][    C2] RAX: ffffed100170bd66 RBX: ffffed100170bd67 RCX: ffffffffa2cd0f13
[ 5892.513034][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5892.513036][    C2] RBP: ffffed100170bd66 R08: 0000000000000000 R09: ffffed100170bd66
[ 5892.513038][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5892.513040][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5892.513043][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5892.513046][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5892.513050][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5892.513052][    C2] PKRU: 55555554
[ 5892.513054][    C2] Call Trace:
[ 5892.513060][    C2]  <TASK>
[ 5892.513065][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5892.513071][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5892.513078][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5892.513084][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5892.513087][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5892.513092][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5892.513097][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5892.513102][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5892.513109][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5892.513112][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5892.513114][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5892.513119][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5892.513126][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5892.513131][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5892.513139][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5892.513147][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5892.513150][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5892.513153][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5892.513156][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5892.513159][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5892.513166][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5892.513170][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5892.513178][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5892.513181][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5892.513202][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5892.513209][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5892.513213][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5892.513220][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5892.513225][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5892.513232][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5892.513239][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5892.513243][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5892.513246][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5892.513250][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5892.513254][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5892.513262][ C2] ksys_write (fs/read_write.c:738) 
[ 5892.513266][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5892.513268][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5892.513276][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5892.513281][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5892.513287][    C2] RIP: 0033:0x7f471c970337
[ 5892.513297][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5892.513299][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5892.513303][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5892.513305][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5892.513307][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5892.513309][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5892.513311][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5916.658322][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5916.658847][    C2] rcu: 2-....: (3689182 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1518048
| [ 5916.659281][    C2] rcu: (t=3692141 jiffies g=1286133 q=66990 ncpus=4)
| [ 5916.659559][    C2] Tainted: [L]=SOFTLOCKUP
[ 5916.659561][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5916.659564][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5916.659577][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5916.659581][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5916.659585][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5916.659587][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5916.659590][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5916.659592][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5916.659594][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5916.659597][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5916.659600][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5916.659604][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5916.659606][    C2] PKRU: 55555554
[ 5916.659607][    C2] Call Trace:
[ 5916.659609][    C2]  <TASK>
[ 5916.659612][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5916.659620][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5916.659625][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5916.659628][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5916.659633][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5916.659641][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5916.659645][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5916.659652][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5916.659655][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5916.659658][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5916.659663][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5916.659669][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5916.659674][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5916.659683][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5916.659691][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5916.659694][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5916.659698][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5916.659700][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5916.659704][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5916.659711][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5916.659715][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5916.659722][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5916.659727][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5916.659731][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5916.659737][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5916.659741][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5916.659747][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5916.659753][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5916.659759][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5916.659768][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5916.659771][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5916.659774][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5916.659778][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5916.659782][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5916.659789][ C2] ksys_write (fs/read_write.c:738) 
[ 5916.659793][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5916.659796][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5916.659804][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5916.659808][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5916.659812][    C2] RIP: 0033:0x7f471c970337
[ 5916.659823][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5916.659825][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5916.659828][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5916.659830][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5916.659832][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5916.659834][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5916.659836][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5928.349845][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5928.350025][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 5928.350205][    C2] NMI backtrace for cpu 2
| [ 5928.350228][    C2] Tainted: [L]=SOFTLOCKUP
[ 5928.350229][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5928.350232][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 5928.350243][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 5928.350247][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 5928.350251][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 5928.350254][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 5928.350256][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 5928.350258][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 5928.350260][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 5928.350262][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5928.350265][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5928.350269][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5928.350272][    C2] PKRU: 55555554
[ 5928.350273][    C2] Call Trace:
[ 5928.350277][    C2]  <IRQ>
[ 5928.350279][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 5928.350290][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 5928.350299][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 5928.350307][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 5928.350315][    C2]  </IRQ>
[ 5928.350317][    C2]  <TASK>
[ 5928.350319][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 5928.350326][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5928.350332][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5928.350335][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5928.350338][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5928.350340][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5928.350342][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5928.350344][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5928.350345][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5928.350349][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5928.350356][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5928.350362][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5928.350367][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5928.350370][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5928.350375][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5928.350383][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5928.350387][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5928.350394][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5928.350396][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5928.350399][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5928.350404][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5928.350410][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5928.350415][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5928.350423][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5928.350430][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5928.350433][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5928.350436][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5928.350439][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5928.350442][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5928.350449][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5928.350453][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5928.350461][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5928.350465][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5928.350468][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5928.350475][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5928.350479][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5928.350485][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5928.350491][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5928.350497][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5928.350505][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5928.350509][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5928.350512][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5928.350516][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5928.350519][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5928.350526][ C2] ksys_write (fs/read_write.c:738) 
[ 5928.350530][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5928.350533][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5928.350540][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5928.350544][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5928.350547][    C2] RIP: 0033:0x7f471c970337
[ 5928.350557][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5928.350559][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5928.350562][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5928.350565][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5928.350567][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5928.350569][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5928.350571][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5952.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5952.512988][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5952.512995][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5952.513011][    C2] Tainted: [L]=SOFTLOCKUP
[ 5952.513013][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5952.513016][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5952.513022][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 5952.513025][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5952.513029][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5952.513031][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5952.513033][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5952.513035][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5952.513037][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5952.513040][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5952.513043][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5952.513048][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5952.513050][    C2] PKRU: 55555554
[ 5952.513051][    C2] Call Trace:
[ 5952.513056][    C2]  <TASK>
[ 5952.513061][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5952.513069][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5952.513076][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5952.513079][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5952.513084][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5952.513089][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5952.513093][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5952.513100][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5952.513103][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5952.513106][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5952.513110][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5952.513117][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5952.513122][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5952.513130][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5952.513138][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5952.513140][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5952.513144][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5952.513146][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5952.513149][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5952.513156][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5952.513160][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5952.513169][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5952.513172][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5952.513176][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5952.513183][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5952.513188][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5952.513194][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5952.513201][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5952.513207][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5952.513215][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5952.513219][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5952.513222][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5952.513226][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5952.513230][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5952.513237][ C2] ksys_write (fs/read_write.c:738) 
[ 5952.513241][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5952.513244][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5952.513252][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5952.513256][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5952.513261][    C2] RIP: 0033:0x7f471c970337
[ 5952.513272][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5952.513274][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5952.513277][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5952.513280][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5952.513282][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5952.513284][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5952.513286][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5980.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 5980.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 5980.512996][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 5980.513012][    C2] Tainted: [L]=SOFTLOCKUP
[ 5980.513014][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5980.513017][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 5980.513022][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 5980.513025][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 5980.513029][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5980.513031][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5980.513033][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5980.513036][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5980.513037][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5980.513040][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5980.513043][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5980.513046][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5980.513048][    C2] PKRU: 55555554
[ 5980.513050][    C2] Call Trace:
[ 5980.513054][    C2]  <TASK>
[ 5980.513059][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5980.513067][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5980.513074][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5980.513077][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5980.513081][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5980.513086][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5980.513091][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5980.513097][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5980.513100][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5980.513103][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5980.513108][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5980.513114][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5980.513120][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5980.513129][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5980.513137][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5980.513139][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5980.513142][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5980.513145][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5980.513148][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5980.513155][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5980.513159][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5980.513167][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5980.513171][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5980.513175][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5980.513182][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5980.513187][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5980.513193][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5980.513199][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5980.513205][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5980.513214][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5980.513218][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5980.513221][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5980.513225][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5980.513229][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5980.513237][ C2] ksys_write (fs/read_write.c:738) 
[ 5980.513240][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5980.513243][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5980.513251][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5980.513256][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5980.513261][    C2] RIP: 0033:0x7f471c970337
[ 5980.513272][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5980.513274][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5980.513277][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5980.513279][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5980.513282][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5980.513284][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5980.513286][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 5994.661323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5994.661824][    C2] rcu: 2-....: (3767116 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1554176
| [ 5994.662220][    C2] rcu: (t=3770144 jiffies g=1286133 q=68416 ncpus=4)
| [ 5994.662476][    C2] Tainted: [L]=SOFTLOCKUP
[ 5994.662478][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5994.662481][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 5994.662493][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 5994.662496][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 5994.662501][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 5994.662503][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 5994.662505][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 5994.662507][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 5994.662509][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 5994.662512][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 5994.662514][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5994.662518][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 5994.662520][    C2] PKRU: 55555554
[ 5994.662521][    C2] Call Trace:
[ 5994.662523][    C2]  <TASK>
[ 5994.662524][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 5994.662535][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 5994.662542][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 5994.662547][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5994.662550][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5994.662555][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5994.662563][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 5994.662567][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 5994.662574][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5994.662576][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 5994.662579][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 5994.662584][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 5994.662590][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 5994.662595][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 5994.662604][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 5994.662612][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 5994.662614][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 5994.662617][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 5994.662620][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 5994.662623][ C2] ? release_sock (net/core/sock.c:3747) 
[ 5994.662631][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 5994.662634][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5994.662642][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 5994.662646][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 5994.662649][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 5994.662656][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 5994.662661][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 5994.662667][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 5994.662672][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 5994.662678][ C2] ? ksys_write (fs/read_write.c:738) 
[ 5994.662685][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 5994.662688][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 5994.662691][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 5994.662695][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 5994.662699][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 5994.662706][ C2] ksys_write (fs/read_write.c:738) 
[ 5994.662709][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 5994.662712][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 5994.662720][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 5994.662725][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5994.662729][    C2] RIP: 0033:0x7f471c970337
[ 5994.662739][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 5994.662741][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5994.662744][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 5994.662746][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 5994.662748][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 5994.662750][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 5994.662752][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6020.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6020.512988][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6020.512995][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6020.513012][    C2] Tainted: [L]=SOFTLOCKUP
[ 6020.513014][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6020.513017][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 6020.513023][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 6020.513027][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6020.513030][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6020.513033][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6020.513035][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6020.513037][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6020.513040][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6020.513042][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6020.513045][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6020.513049][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6020.513052][    C2] PKRU: 55555554
[ 6020.513053][    C2] Call Trace:
[ 6020.513058][    C2]  <TASK>
[ 6020.513064][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6020.513072][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6020.513079][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6020.513082][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6020.513087][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6020.513092][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6020.513097][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6020.513104][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6020.513107][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6020.513110][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6020.513115][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6020.513121][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6020.513127][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6020.513136][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6020.513144][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6020.513147][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6020.513150][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6020.513152][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6020.513155][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6020.513163][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6020.513168][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6020.513176][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6020.513179][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6020.513184][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6020.513191][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6020.513196][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6020.513202][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6020.513208][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6020.513215][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6020.513223][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6020.513227][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6020.513230][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6020.513234][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6020.513238][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6020.513246][ C2] ksys_write (fs/read_write.c:738) 
[ 6020.513250][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6020.513253][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6020.513261][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6020.513266][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6020.513271][    C2] RIP: 0033:0x7f471c970337
[ 6020.513283][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6020.513285][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6020.513289][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6020.513291][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6020.513293][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6020.513296][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6020.513298][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6026.653833][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6026.654021][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 6026.654185][    C2] NMI backtrace for cpu 2
| [ 6026.654206][    C2] Tainted: [L]=SOFTLOCKUP
[ 6026.654208][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6026.654210][ C2] RIP: 0010:vring_interrupt (drivers/virtio/virtio_ring.c:808 drivers/virtio/virtio_ring.c:2679 drivers/virtio/virtio_ring.c:2694) 
[ 6026.654221][ C2] Code: c1 ea 03 80 3c 02 00 0f 85 d1 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5d 70 48 8d 7b 02 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 b3 00 00 00 66
All code
========
   0:	c1 ea 03             	shr    $0x3,%edx
   3:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   7:	0f 85 d1 00 00 00    	jne    0xde
   d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  14:	fc ff df 
  17:	48 8b 5d 70          	mov    0x70(%rbp),%rbx
  1b:	48 8d 7b 02          	lea    0x2(%rbx),%rdi
  1f:	48 89 fa             	mov    %rdi,%rdx
  22:	48 c1 ea 03          	shr    $0x3,%rdx
  26:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
  2a:*	48 89 f8             	mov    %rdi,%rax		<-- trapping instruction
  2d:	83 e0 07             	and    $0x7,%eax
  30:	83 c0 01             	add    $0x1,%eax
  33:	38 d0                	cmp    %dl,%al
  35:	7c 08                	jl     0x3f
  37:	84 d2                	test   %dl,%dl
  39:	0f 85 b3 00 00 00    	jne    0xf2
  3f:	66                   	data16

Code starting with the faulting instruction
===========================================
   0:	48 89 f8             	mov    %rdi,%rax
   3:	83 e0 07             	and    $0x7,%eax
   6:	83 c0 01             	add    $0x1,%eax
   9:	38 d0                	cmp    %dl,%al
   b:	7c 08                	jl     0x15
   d:	84 d2                	test   %dl,%dl
   f:	0f 85 b3 00 00 00    	jne    0xc8
  15:	66                   	data16
[ 6026.654224][    C2] RSP: 0018:ffffc90000218ea0 EFLAGS: 00000806
[ 6026.654229][    C2] RAX: dffffc0000000000 RBX: ffff88800645d000 RCX: ffffffffa03f1df0
[ 6026.654231][    C2] RDX: 0000000000000000 RSI: ffff888006350700 RDI: ffff88800645d002
[ 6026.654233][    C2] RBP: ffff888006350700 R08: 0000000000000001 R09: fffff520000431c6
[ 6026.654235][    C2] R10: 0000000000000003 R11: ffffc90000218ff8 R12: 0000000000000402
[ 6026.654237][    C2] R13: ffff88800625bd78 R14: dffffc0000000000 R15: ffff88800625bd38
[ 6026.654239][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6026.654241][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6026.654245][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6026.654247][    C2] PKRU: 55555554
[ 6026.654249][    C2] Call Trace:
[ 6026.654252][    C2]  <IRQ>
[ 6026.654257][ C2] vm_interrupt (drivers/virtio/virtio_mmio.c:319 (discriminator 3)) 
[ 6026.654264][ C2] ? __pfx_vm_interrupt (drivers/virtio/virtio_mmio.c:301) 
[ 6026.654268][ C2] __handle_irq_event_percpu (kernel/irq/handle.c:159 (discriminator 1)) 
[ 6026.654276][ C2] handle_irq_event (kernel/irq/handle.c:195 kernel/irq/handle.c:210) 
[ 6026.654280][ C2] handle_fasteoi_irq (kernel/irq/chip.c:644 kernel/irq/chip.c:708) 
[ 6026.654286][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 6026.654294][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 6026.654302][    C2]  </IRQ>
[ 6026.654303][    C2]  <TASK>
[ 6026.654305][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 6026.654310][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6026.654318][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6026.654320][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6026.654323][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6026.654325][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6026.654327][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6026.654328][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6026.654330][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6026.654334][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 6026.654340][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6026.654346][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6026.654351][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6026.654354][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6026.654358][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6026.654366][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6026.654370][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6026.654376][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6026.654378][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6026.654381][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6026.654386][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6026.654392][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6026.654397][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6026.654404][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6026.654412][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6026.654415][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6026.654418][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6026.654421][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6026.654423][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6026.654431][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6026.654434][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6026.654441][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6026.654445][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6026.654449][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6026.654455][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6026.654459][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6026.654466][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6026.654471][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6026.654478][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6026.654485][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6026.654489][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6026.654492][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6026.654496][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6026.654499][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6026.654506][ C2] ksys_write (fs/read_write.c:738) 
[ 6026.654509][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6026.654512][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6026.654520][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6026.654524][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6026.654527][    C2] RIP: 0033:0x7f471c970337
[ 6026.654537][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6026.654539][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6026.654542][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6026.654544][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6026.654546][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6026.654548][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6026.654550][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6052.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6052.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6052.512994][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6052.513010][    C2] Tainted: [L]=SOFTLOCKUP
[ 6052.513012][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6052.513015][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6052.513020][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6052.513024][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6052.513027][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6052.513029][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6052.513031][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6052.513033][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6052.513034][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6052.513036][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6052.513039][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6052.513043][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6052.513045][    C2] PKRU: 55555554
[ 6052.513046][    C2] Call Trace:
[ 6052.513050][    C2]  <TASK>
[ 6052.513055][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6052.513063][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6052.513069][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6052.513071][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6052.513077][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6052.513081][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6052.513085][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6052.513092][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6052.513094][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6052.513097][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6052.513101][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6052.513107][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6052.513112][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6052.513121][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6052.513128][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6052.513131][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6052.513134][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6052.513136][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6052.513139][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6052.513146][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6052.513150][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6052.513158][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6052.513161][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6052.513165][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6052.513172][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6052.513176][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6052.513183][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6052.513188][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6052.513195][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6052.513203][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6052.513207][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6052.513210][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6052.513213][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6052.513217][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6052.513225][ C2] ksys_write (fs/read_write.c:738) 
[ 6052.513228][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6052.513231][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6052.513238][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6052.513243][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6052.513248][    C2] RIP: 0033:0x7f471c970337
[ 6052.513259][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6052.513261][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6052.513264][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6052.513266][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6052.513268][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6052.513270][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6052.513272][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6072.664322][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6072.664800][    C2] rcu: 2-....: (3845049 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1590484
| [ 6072.665192][    C2] rcu: (t=3848147 jiffies g=1286133 q=69857 ncpus=4)
| [ 6072.665472][    C2] Tainted: [L]=SOFTLOCKUP
[ 6072.665474][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6072.665477][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6072.665490][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6072.665493][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6072.665498][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6072.665501][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6072.665503][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6072.665505][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6072.665507][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6072.665509][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6072.665512][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6072.665516][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6072.665518][    C2] PKRU: 55555554
[ 6072.665519][    C2] Call Trace:
[ 6072.665521][    C2]  <TASK>
[ 6072.665523][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6072.665531][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6072.665537][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6072.665540][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6072.665544][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6072.665553][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6072.665556][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6072.665562][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6072.665565][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6072.665568][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6072.665573][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6072.665579][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6072.665584][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6072.665593][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6072.665601][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6072.665604][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6072.665607][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6072.665609][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6072.665612][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6072.665619][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6072.665622][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6072.665630][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6072.665634][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6072.665637][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6072.665644][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6072.665648][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6072.665654][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6072.665660][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6072.665667][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6072.665676][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6072.665679][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6072.665682][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6072.665686][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6072.665690][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6072.665697][ C2] ksys_write (fs/read_write.c:738) 
[ 6072.665700][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6072.665702][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6072.665711][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6072.665715][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6072.665719][    C2] RIP: 0033:0x7f471c970337
[ 6072.665730][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6072.665732][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6072.665735][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6072.665737][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6072.665739][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6072.665740][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6072.665742][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6100.512985][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6100.512990][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6100.512997][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6100.513013][    C2] Tainted: [L]=SOFTLOCKUP
[ 6100.513015][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6100.513019][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6100.513025][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6100.513028][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6100.513032][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6100.513034][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6100.513037][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6100.513039][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6100.513041][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6100.513044][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6100.513047][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6100.513051][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6100.513053][    C2] PKRU: 55555554
[ 6100.513055][    C2] Call Trace:
[ 6100.513060][    C2]  <TASK>
[ 6100.513065][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6100.513073][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6100.513081][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6100.513084][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6100.513089][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6100.513094][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6100.513098][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6100.513105][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6100.513108][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6100.513111][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6100.513116][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6100.513122][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6100.513128][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6100.513137][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6100.513145][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6100.513147][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6100.513151][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6100.513153][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6100.513156][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6100.513164][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6100.513168][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6100.513177][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6100.513180][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6100.513185][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6100.513192][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6100.513196][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6100.513203][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6100.513209][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6100.513216][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6100.513224][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6100.513229][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6100.513232][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6100.513236][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6100.513240][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6100.513247][ C2] ksys_write (fs/read_write.c:738) 
[ 6100.513251][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6100.513254][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6100.513262][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6100.513267][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6100.513273][    C2] RIP: 0033:0x7f471c970337
[ 6100.513284][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6100.513286][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6100.513290][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6100.513292][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6100.513294][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6100.513297][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6100.513299][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6124.958072][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6124.958279][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 6124.958532][    C2] NMI backtrace for cpu 2
| [ 6124.958554][    C2] Tainted: [L]=SOFTLOCKUP
[ 6124.958556][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6124.958559][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6124.958573][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6124.958577][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6124.958581][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6124.958584][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6124.958586][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6124.958588][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6124.958590][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6124.958592][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6124.958595][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6124.958599][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6124.958601][    C2] PKRU: 55555554
[ 6124.958602][    C2] Call Trace:
[ 6124.958606][    C2]  <TASK>
[ 6124.958611][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6124.958618][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6124.958626][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6124.958628][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6124.958633][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6124.958642][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6124.958646][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6124.958652][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6124.958655][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6124.958658][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6124.958663][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6124.958668][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6124.958673][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6124.958683][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6124.958691][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6124.958693][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6124.958696][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6124.958699][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6124.958702][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6124.958709][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6124.958713][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6124.958721][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6124.958725][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6124.958729][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6124.958736][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6124.958740][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6124.958747][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6124.958753][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6124.958759][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6124.958767][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6124.958772][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6124.958774][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6124.958778][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6124.958782][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6124.958789][ C2] ksys_write (fs/read_write.c:738) 
[ 6124.958792][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6124.958794][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6124.958803][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6124.958808][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6124.958813][    C2] RIP: 0033:0x7f471c970337
[ 6124.958824][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6124.958826][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6124.958829][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6124.958832][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6124.958834][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6124.958836][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6124.958838][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6150.667323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6150.667874][    C2] rcu: 2-....: (3923005 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1627969
| [ 6150.668271][    C2] rcu: (t=3926150 jiffies g=1286133 q=70850 ncpus=4)
| [ 6150.668524][    C2] Tainted: [L]=SOFTLOCKUP
[ 6150.668526][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6150.668529][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6150.668542][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6150.668545][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6150.668550][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6150.668552][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6150.668554][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6150.668557][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6150.668559][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6150.668561][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6150.668563][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6150.668567][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6150.668570][    C2] PKRU: 55555554
[ 6150.668571][    C2] Call Trace:
[ 6150.668572][    C2]  <TASK>
[ 6150.668575][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6150.668583][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6150.668588][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6150.668591][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6150.668596][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6150.668604][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6150.668608][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6150.668614][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6150.668617][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6150.668620][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6150.668625][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6150.668631][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6150.668636][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6150.668645][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6150.668653][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6150.668655][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6150.668659][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6150.668661][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6150.668664][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6150.668671][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6150.668675][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6150.668682][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6150.668686][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6150.668690][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6150.668697][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6150.668701][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6150.668707][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6150.668712][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6150.668719][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6150.668727][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6150.668731][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6150.668733][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6150.668737][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6150.668741][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6150.668749][ C2] ksys_write (fs/read_write.c:738) 
[ 6150.668752][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6150.668755][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6150.668763][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6150.668767][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6150.668771][    C2] RIP: 0033:0x7f471c970337
[ 6150.668782][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6150.668784][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6150.668787][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6150.668789][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6150.668791][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6150.668793][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6150.668796][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6176.512976][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6176.512980][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6176.512987][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6176.513001][    C2] Tainted: [L]=SOFTLOCKUP
[ 6176.513003][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6176.513006][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 6176.513014][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 6176.513018][    C2] RSP: 0018:ffffc9000029f5b8 EFLAGS: 00000282
[ 6176.513021][    C2] RAX: ffff88800b85eb34 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6176.513024][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6176.513026][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6176.513028][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6176.513030][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6176.513032][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6176.513035][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6176.513038][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6176.513040][    C2] PKRU: 55555554
[ 6176.513042][    C2] Call Trace:
[ 6176.513045][    C2]  <TASK>
[ 6176.513049][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 6176.513055][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6176.513062][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6176.513068][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6176.513071][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6176.513075][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6176.513080][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6176.513085][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6176.513091][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6176.513094][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6176.513097][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6176.513102][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6176.513108][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6176.513113][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6176.513122][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6176.513129][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6176.513132][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6176.513135][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6176.513138][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6176.513141][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6176.513148][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6176.513152][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6176.513160][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6176.513164][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6176.513168][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6176.513176][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6176.513180][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6176.513186][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6176.513192][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6176.513198][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6176.513205][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6176.513210][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6176.513212][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6176.513216][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6176.513220][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6176.513227][ C2] ksys_write (fs/read_write.c:738) 
[ 6176.513231][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6176.513233][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6176.513241][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6176.513246][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6176.513251][    C2] RIP: 0033:0x7f471c970337
[ 6176.513261][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6176.513263][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6176.513266][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6176.513268][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6176.513270][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6176.513272][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6176.513274][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6204.512971][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6204.512975][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6204.512983][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6204.512996][    C2] Tainted: [L]=SOFTLOCKUP
[ 6204.512998][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6204.513000][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6204.513005][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6204.513008][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6204.513012][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6204.513014][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6204.513017][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6204.513019][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6204.513021][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6204.513023][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6204.513026][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6204.513030][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6204.513032][    C2] PKRU: 55555554
[ 6204.513034][    C2] Call Trace:
[ 6204.513038][    C2]  <TASK>
[ 6204.513041][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6204.513049][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6204.513055][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6204.513058][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6204.513063][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6204.513068][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6204.513072][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6204.513078][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6204.513081][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6204.513084][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6204.513089][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6204.513095][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6204.513100][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6204.513107][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6204.513115][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6204.513118][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6204.513121][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6204.513123][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6204.513126][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6204.513133][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6204.513137][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6204.513144][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6204.513148][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6204.513152][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6204.513159][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6204.513163][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6204.513169][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6204.513174][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6204.513180][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6204.513187][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6204.513192][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6204.513194][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6204.513198][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6204.513202][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6204.513209][ C2] ksys_write (fs/read_write.c:738) 
[ 6204.513213][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6204.513216][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6204.513223][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6204.513228][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6204.513232][    C2] RIP: 0033:0x7f471c970337
[ 6204.513239][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6204.513241][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6204.513245][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6204.513247][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6204.513249][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6204.513251][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6204.513253][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6223.261900][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6223.262095][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 6223.262372][    C2] NMI backtrace for cpu 2
| [ 6223.262387][    C2] Tainted: [L]=SOFTLOCKUP
[ 6223.262389][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6223.262391][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 6223.262403][ C2] Code: 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d 3f e5 fd <41> 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44
All code
========
   0:	01 00                	add    %eax,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	49 c1 ee 03          	shr    $0x3,%r14
   8:	41 83 e5 07          	and    $0x7,%r13d
   c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  13:	fc ff df 
  16:	49 01 c6             	add    %rax,%r14
  19:	41 83 c5 03          	add    $0x3,%r13d
  1d:	be 04 00 00 00       	mov    $0x4,%esi
  22:	48 89 ef             	mov    %rbp,%rdi
  25:	e8 5d 3f e5 fd       	call   0xfffffffffde53f87
  2a:*	41 0f b6 06          	movzbl (%r14),%eax		<-- trapping instruction
  2e:	41 38 c5             	cmp    %al,%r13b
  31:	7c 08                	jl     0x3b
  33:	84 c0                	test   %al,%al
  35:	0f 85 8d 07 00 00    	jne    0x7c8
  3b:	8b 45 00             	mov    0x0(%rbp),%eax
  3e:	89                   	.byte 0x89
  3f:	44                   	rex.R

Code starting with the faulting instruction
===========================================
   0:	41 0f b6 06          	movzbl (%r14),%eax
   4:	41 38 c5             	cmp    %al,%r13b
   7:	7c 08                	jl     0x11
   9:	84 c0                	test   %al,%al
   b:	0f 85 8d 07 00 00    	jne    0x79e
  11:	8b 45 00             	mov    0x0(%rbp),%eax
  14:	89                   	.byte 0x89
  15:	44                   	rex.R
[ 6223.262406][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000246
[ 6223.262411][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6223.262413][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6223.262415][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6223.262417][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6223.262419][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6223.262421][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6223.262424][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6223.262428][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6223.262430][    C2] PKRU: 55555554
[ 6223.262431][    C2] Call Trace:
[ 6223.262434][    C2]  <TASK>
[ 6223.262439][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6223.262446][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6223.262453][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6223.262456][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6223.262460][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6223.262468][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6223.262472][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6223.262479][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6223.262481][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6223.262485][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6223.262489][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6223.262496][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6223.262501][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6223.262509][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6223.262517][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6223.262520][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6223.262523][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6223.262526][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6223.262528][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6223.262536][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6223.262539][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6223.262547][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6223.262551][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6223.262555][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6223.262562][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6223.262566][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6223.262573][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6223.262578][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6223.262585][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6223.262593][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6223.262598][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6223.262600][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6223.262604][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6223.262608][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6223.262615][ C2] ksys_write (fs/read_write.c:738) 
[ 6223.262619][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6223.262622][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6223.262630][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6223.262635][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6223.262639][    C2] RIP: 0033:0x7f471c970337
[ 6223.262648][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6223.262650][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6223.262653][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6223.262655][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6223.262658][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6223.262660][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6223.262662][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6228.670331][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6228.670811][    C2] rcu: 2-....: (4000944 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1665904
| [ 6228.671199][    C2] rcu: (t=4004153 jiffies g=1286133 q=72198 ncpus=4)
| [ 6228.671472][    C2] Tainted: [L]=SOFTLOCKUP
[ 6228.671473][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6228.671476][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6228.671485][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6228.671488][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6228.671492][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6228.671494][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6228.671496][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6228.671498][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6228.671500][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6228.671502][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6228.671504][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6228.671508][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6228.671510][    C2] PKRU: 55555554
[ 6228.671511][    C2] Call Trace:
[ 6228.671513][    C2]  <TASK>
[ 6228.671515][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6228.671522][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6228.671527][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6228.671530][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6228.671534][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6228.671540][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6228.671544][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6228.671550][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6228.671552][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6228.671555][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6228.671560][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6228.671566][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6228.671571][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6228.671577][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6228.671585][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6228.671587][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6228.671590][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6228.671593][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6228.671596][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6228.671601][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6228.671604][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6228.671611][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6228.671615][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6228.671619][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6228.671624][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6228.671629][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6228.671634][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6228.671638][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6228.671645][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6228.671651][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6228.671655][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6228.671657][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6228.671661][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6228.671664][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6228.671672][ C2] ksys_write (fs/read_write.c:738) 
[ 6228.671675][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6228.671677][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6228.671684][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6228.671688][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6228.671691][    C2] RIP: 0033:0x7f471c970337
[ 6228.671698][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6228.671700][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6228.671703][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6228.671705][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6228.671707][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6228.671709][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6228.671711][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6256.512967][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6256.512972][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6256.512977][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6256.512989][    C2] Tainted: [L]=SOFTLOCKUP
[ 6256.512991][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6256.512993][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6256.512998][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6256.513001][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6256.513004][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6256.513007][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6256.513009][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6256.513011][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6256.513013][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6256.513015][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6256.513018][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6256.513022][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6256.513025][    C2] PKRU: 55555554
[ 6256.513026][    C2] Call Trace:
[ 6256.513029][    C2]  <TASK>
[ 6256.513032][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6256.513040][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6256.513045][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6256.513048][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6256.513052][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6256.513057][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6256.513061][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6256.513067][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6256.513070][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6256.513073][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6256.513078][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6256.513083][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6256.513089][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6256.513095][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6256.513102][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6256.513105][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6256.513108][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6256.513111][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6256.513114][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6256.513120][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6256.513124][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6256.513132][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6256.513136][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6256.513140][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6256.513145][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6256.513149][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6256.513155][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6256.513160][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6256.513166][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6256.513173][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6256.513176][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6256.513179][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6256.513183][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6256.513187][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6256.513195][ C2] ksys_write (fs/read_write.c:738) 
[ 6256.513198][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6256.513201][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6256.513207][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6256.513212][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6256.513215][    C2] RIP: 0033:0x7f471c970337
[ 6256.513222][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6256.513223][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6256.513226][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6256.513228][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6256.513230][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6256.513232][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6256.513234][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6284.512966][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6284.512970][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6284.512976][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6284.512988][    C2] Tainted: [L]=SOFTLOCKUP
[ 6284.512990][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6284.512992][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6284.512997][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6284.513000][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6284.513003][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6284.513006][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6284.513008][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6284.513010][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6284.513012][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6284.513015][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6284.513018][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6284.513022][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6284.513024][    C2] PKRU: 55555554
[ 6284.513025][    C2] Call Trace:
[ 6284.513028][    C2]  <TASK>
[ 6284.513031][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6284.513038][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6284.513043][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6284.513046][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6284.513050][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6284.513055][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6284.513060][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6284.513066][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6284.513069][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6284.513071][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6284.513076][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6284.513082][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6284.513087][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6284.513094][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6284.513101][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6284.513104][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6284.513107][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6284.513110][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6284.513113][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6284.513119][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6284.513123][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6284.513130][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6284.513134][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6284.513137][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6284.513143][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6284.513147][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6284.513152][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6284.513157][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6284.513164][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6284.513170][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6284.513174][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6284.513176][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6284.513180][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6284.513184][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6284.513192][ C2] ksys_write (fs/read_write.c:738) 
[ 6284.513195][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6284.513198][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6284.513204][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6284.513208][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6284.513212][    C2] RIP: 0033:0x7f471c970337
[ 6284.513218][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6284.513219][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6284.513223][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6284.513225][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6284.513227][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6284.513229][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6284.513231][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6306.673324][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6306.673869][    C2] rcu: 2-....: (4078897 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1703668
| [ 6306.674274][    C2] rcu: (t=4082156 jiffies g=1286133 q=73227 ncpus=4)
| [ 6306.674534][    C2] Tainted: [L]=SOFTLOCKUP
[ 6306.674536][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6306.674538][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6306.674551][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6306.674555][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6306.674559][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6306.674562][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6306.674564][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6306.674566][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6306.674568][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6306.674571][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6306.674574][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6306.674577][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6306.674579][    C2] PKRU: 55555554
[ 6306.674581][    C2] Call Trace:
[ 6306.674582][    C2]  <TASK>
[ 6306.674585][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6306.674593][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6306.674599][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6306.674602][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6306.674607][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6306.674615][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6306.674619][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6306.674625][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6306.674628][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6306.674631][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6306.674636][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6306.674642][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6306.674647][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6306.674657][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6306.674664][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6306.674667][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6306.674671][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6306.674674][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6306.674677][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6306.674684][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6306.674688][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6306.674695][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6306.674699][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6306.674703][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6306.674710][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6306.674714][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6306.674721][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6306.674726][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6306.674733][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6306.674741][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6306.674744][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6306.674747][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6306.674751][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6306.674755][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6306.674762][ C2] ksys_write (fs/read_write.c:738) 
[ 6306.674765][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6306.674768][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6306.674776][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6306.674780][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6306.674784][    C2] RIP: 0033:0x7f471c970337
[ 6306.674794][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6306.674796][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6306.674799][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6306.674801][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6306.674804][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6306.674805][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6306.674807][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6321.565852][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6321.566160][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 6321.566348][    C2] NMI backtrace for cpu 2
| [ 6321.566366][    C2] Tainted: [L]=SOFTLOCKUP
[ 6321.566367][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6321.566370][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6321.566382][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6321.566386][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6321.566390][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6321.566392][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6321.566395][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6321.566397][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6321.566399][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6321.566401][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6321.566404][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6321.566408][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6321.566410][    C2] PKRU: 55555554
[ 6321.566412][    C2] Call Trace:
[ 6321.566415][    C2]  <TASK>
[ 6321.566420][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6321.566428][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6321.566435][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6321.566438][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6321.566442][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6321.566449][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6321.566454][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6321.566460][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6321.566463][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6321.566467][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6321.566472][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6321.566478][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6321.566483][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6321.566493][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6321.566501][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6321.566504][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6321.566507][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6321.566510][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6321.566513][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6321.566520][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6321.566525][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6321.566533][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6321.566537][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6321.566541][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6321.566549][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6321.566553][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6321.566560][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6321.566565][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6321.566572][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6321.566580][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6321.566584][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6321.566587][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6321.566591][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6321.566595][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6321.566602][ C2] ksys_write (fs/read_write.c:738) 
[ 6321.566606][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6321.566608][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6321.566616][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6321.566620][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6321.566625][    C2] RIP: 0033:0x7f471c970337
[ 6321.566636][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6321.566638][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6321.566641][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6321.566643][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6321.566646][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6321.566648][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6321.566650][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6348.512988][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6348.512993][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6348.513001][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6348.513018][    C2] Tainted: [L]=SOFTLOCKUP
[ 6348.513020][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6348.513023][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6348.513028][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6348.513032][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6348.513035][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6348.513038][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6348.513040][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6348.513043][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6348.513045][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6348.513047][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6348.513050][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6348.513055][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6348.513057][    C2] PKRU: 55555554
[ 6348.513058][    C2] Call Trace:
[ 6348.513063][    C2]  <TASK>
[ 6348.513068][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6348.513076][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6348.513083][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6348.513086][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6348.513091][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6348.513096][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6348.513101][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6348.513108][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6348.513111][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6348.513114][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6348.513119][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6348.513125][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6348.513131][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6348.513140][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6348.513149][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6348.513152][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6348.513155][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6348.513158][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6348.513161][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6348.513169][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6348.513174][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6348.513182][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6348.513186][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6348.513190][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6348.513197][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6348.513202][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6348.513209][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6348.513215][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6348.513222][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6348.513231][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6348.513235][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6348.513238][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6348.513242][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6348.513246][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6348.513254][ C2] ksys_write (fs/read_write.c:738) 
[ 6348.513258][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6348.513261][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6348.513269][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6348.513274][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6348.513280][    C2] RIP: 0033:0x7f471c970337
[ 6348.513292][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6348.513294][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6348.513297][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6348.513299][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6348.513302][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6348.513304][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6348.513306][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6376.512985][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6376.512990][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6376.512998][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6376.513013][    C2] Tainted: [L]=SOFTLOCKUP
[ 6376.513015][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6376.513018][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6376.513024][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6376.513028][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6376.513032][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6376.513034][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6376.513036][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6376.513038][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6376.513041][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6376.513043][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6376.513046][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6376.513050][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6376.513053][    C2] PKRU: 55555554
[ 6376.513055][    C2] Call Trace:
[ 6376.513059][    C2]  <TASK>
[ 6376.513064][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6376.513072][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6376.513079][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6376.513082][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6376.513087][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6376.513092][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6376.513097][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6376.513104][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6376.513107][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6376.513110][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6376.513115][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6376.513121][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6376.513127][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6376.513136][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6376.513144][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6376.513147][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6376.513150][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6376.513153][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6376.513156][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6376.513164][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6376.513168][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6376.513176][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6376.513180][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6376.513184][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6376.513192][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6376.513196][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6376.513203][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6376.513208][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6376.513216][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6376.513224][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6376.513228][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6376.513231][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6376.513235][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6376.513239][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6376.513247][ C2] ksys_write (fs/read_write.c:738) 
[ 6376.513251][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6376.513253][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6376.513261][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6376.513267][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6376.513271][    C2] RIP: 0033:0x7f471c970337
[ 6376.513284][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6376.513286][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6376.513289][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6376.513292][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6376.513294][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6376.513296][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6376.513298][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6384.676323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6384.676915][    C2] rcu: 2-....: (4156830 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1742483
| [ 6384.677443][    C2] rcu: (t=4160159 jiffies g=1286133 q=74572 ncpus=4)
| [ 6384.677776][    C2] Tainted: [L]=SOFTLOCKUP
[ 6384.677778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6384.677781][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6384.677795][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6384.677799][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6384.677804][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6384.677806][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6384.677808][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6384.677811][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6384.677813][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6384.677815][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6384.677818][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6384.677822][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6384.677824][    C2] PKRU: 55555554
[ 6384.677826][    C2] Call Trace:
[ 6384.677827][    C2]  <TASK>
[ 6384.677830][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6384.677838][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6384.677845][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6384.677847][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6384.677852][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6384.677861][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6384.677865][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6384.677872][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6384.677875][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6384.677877][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6384.677883][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6384.677889][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6384.677894][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6384.677903][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6384.677911][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6384.677914][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6384.677917][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6384.677920][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6384.677923][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6384.677932][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6384.677935][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6384.677943][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6384.677947][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6384.677951][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6384.677958][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6384.677963][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6384.677969][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6384.677975][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6384.677982][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6384.677991][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6384.677994][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6384.677997][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6384.678001][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6384.678005][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6384.678012][ C2] ksys_write (fs/read_write.c:738) 
[ 6384.678015][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6384.678018][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6384.678026][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6384.678031][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6384.678035][    C2] RIP: 0033:0x7f471c970337
[ 6384.678046][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6384.678048][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6384.678052][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6384.678054][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6384.678056][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6384.678058][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6384.678060][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6412.512986][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6412.512992][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6412.513000][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6412.513016][    C2] Tainted: [L]=SOFTLOCKUP
[ 6412.513018][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6412.513020][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6412.513026][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6412.513030][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6412.513033][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6412.513036][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6412.513038][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6412.513041][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6412.513043][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6412.513046][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6412.513049][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6412.513053][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6412.513056][    C2] PKRU: 55555554
[ 6412.513057][    C2] Call Trace:
[ 6412.513062][    C2]  <TASK>
[ 6412.513067][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6412.513076][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6412.513083][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6412.513086][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6412.513092][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6412.513097][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6412.513102][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6412.513109][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6412.513112][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6412.513115][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6412.513120][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6412.513126][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6412.513132][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6412.513141][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6412.513149][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6412.513152][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6412.513155][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6412.513158][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6412.513161][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6412.513169][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6412.513174][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6412.513182][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6412.513186][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6412.513190][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6412.513198][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6412.513202][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6412.513210][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6412.513215][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6412.513223][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6412.513231][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6412.513235][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6412.513238][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6412.513242][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6412.513246][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6412.513254][ C2] ksys_write (fs/read_write.c:738) 
[ 6412.513257][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6412.513260][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6412.513268][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6412.513274][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6412.513283][    C2] RIP: 0033:0x7f471c970337
[ 6412.513296][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6412.513298][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6412.513301][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6412.513304][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6412.513306][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6412.513308][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6412.513310][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6419.870931][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6419.871345][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 6419.871595][    C2] NMI backtrace for cpu 2
| [ 6419.871613][    C2] Tainted: [L]=SOFTLOCKUP
[ 6419.871615][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6419.871618][ C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:310) 
[ 6419.871630][ C2] Code: 8d be 28 05 00 00 53 48 89 fa 48 89 f3 48 c1 ea 03 48 83 ec 08 80 3c 02 00 0f 85 fc 00 00 00 48 8b 83 28 05 00 00 44 8b 68 60 <48> 8b 83 28 05 00 00 44 89 68 64 45 89 ec 41 83 e4 02 0f 85 b5 00
All code
========
   0:	8d be 28 05 00 00    	lea    0x528(%rsi),%edi
   6:	53                   	push   %rbx
   7:	48 89 fa             	mov    %rdi,%rdx
   a:	48 89 f3             	mov    %rsi,%rbx
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	48 83 ec 08          	sub    $0x8,%rsp
  15:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  19:	0f 85 fc 00 00 00    	jne    0x11b
  1f:	48 8b 83 28 05 00 00 	mov    0x528(%rbx),%rax
  26:	44 8b 68 60          	mov    0x60(%rax),%r13d
  2a:*	48 8b 83 28 05 00 00 	mov    0x528(%rbx),%rax		<-- trapping instruction
  31:	44 89 68 64          	mov    %r13d,0x64(%rax)
  35:	45 89 ec             	mov    %r13d,%r12d
  38:	41 83 e4 02          	and    $0x2,%r12d
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	b5 00                	mov    $0x0,%ch

Code starting with the faulting instruction
===========================================
   0:	48 8b 83 28 05 00 00 	mov    0x528(%rbx),%rax
   7:	44 89 68 64          	mov    %r13d,0x64(%rax)
   b:	45 89 ec             	mov    %r13d,%r12d
   e:	41 83 e4 02          	and    $0x2,%r12d
  12:	0f                   	.byte 0xf
  13:	85                   	.byte 0x85
  14:	b5 00                	mov    $0x0,%ch
[ 6419.871634][    C2] RSP: 0018:ffffc90000218ec0 EFLAGS: 00000046
[ 6419.871639][    C2] RAX: ffffc9000002ec00 RBX: ffff88800625b800 RCX: ffffffffa0423c21
[ 6419.871641][    C2] RDX: 1ffff11000c4b7a5 RSI: ffff88800625b800 RDI: ffff88800625bd28
[ 6419.871644][    C2] RBP: 0000000000000032 R08: 0000000000000000 R09: fffffbfff490a2fa
[ 6419.871646][    C2] R10: ffffffffa48517d7 R11: ffffc90000218ff8 R12: ffff88800293e400
[ 6419.871648][    C2] R13: 0000000000000001 R14: ffffffffa14624b0 R15: ffff8880062eab00
[ 6419.871650][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6419.871653][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6419.871657][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6419.871659][    C2] PKRU: 55555554
[ 6419.871660][    C2] Call Trace:
[ 6419.871664][    C2]  <IRQ>
[ 6419.871666][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 6419.871678][ C2] ? __pfx_vm_interrupt (drivers/virtio/virtio_mmio.c:301) 
[ 6419.871681][ C2] __handle_irq_event_percpu (kernel/irq/handle.c:159 (discriminator 1)) 
[ 6419.871689][ C2] handle_irq_event (kernel/irq/handle.c:195 kernel/irq/handle.c:210) 
[ 6419.871693][ C2] handle_fasteoi_irq (kernel/irq/chip.c:644 kernel/irq/chip.c:708) 
[ 6419.871699][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 6419.871708][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 6419.871715][    C2]  </IRQ>
[ 6419.871717][    C2]  <TASK>
[ 6419.871719][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 6419.871725][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6419.871732][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6419.871735][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6419.871738][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6419.871740][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6419.871742][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6419.871744][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6419.871746][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6419.871750][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 6419.871757][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6419.871764][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6419.871769][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6419.871772][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6419.871777][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6419.871786][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6419.871790][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6419.871798][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6419.871801][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6419.871804][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6419.871809][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6419.871815][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6419.871820][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6419.871829][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6419.871837][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6419.871839][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6419.871843][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6419.871845][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6419.871848][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6419.871856][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6419.871860][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6419.871868][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6419.871872][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6419.871876][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6419.871883][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6419.871887][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6419.871894][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6419.871900][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6419.871906][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6419.871915][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6419.871918][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6419.871921][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6419.871925][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6419.871929][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6419.871936][ C2] ksys_write (fs/read_write.c:738) 
[ 6419.871940][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6419.871943][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6419.871951][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6419.871954][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6419.871958][    C2] RIP: 0033:0x7f471c970337
[ 6419.871969][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6419.871971][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6419.871975][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6419.871977][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6419.871979][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6419.871982][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6419.871984][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6444.512986][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6444.512991][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6444.512999][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6444.513015][    C2] Tainted: [L]=SOFTLOCKUP
[ 6444.513017][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6444.513020][ C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:64 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 6444.513029][ C2] Code: 5b 5d 41 5c e9 0b fb 1a 02 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df <4d> 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d
All code
========
   0:	5b                   	pop    %rbx
   1:	5d                   	pop    %rbp
   2:	41 5c                	pop    %r12
   4:	e9 0b fb 1a 02       	jmp    0x21afb14
   9:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  10:	7f ff ff 
  13:	48 39 c7             	cmp    %rax,%rdi
  16:	76 dd                	jbe    0xfffffffffffffff5
  18:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  1d:	48 89 fd             	mov    %rdi,%rbp
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df 
  2a:*	4d 89 d1             	mov    %r10,%r9		<-- trapping instruction
  2d:	48 c1 ed 03          	shr    $0x3,%rbp
  31:	49 c1 e9 03          	shr    $0x3,%r9
  35:	48 01 c5             	add    %rax,%rbp
  38:	49 01 c1             	add    %rax,%r9
  3b:	48 89 e8             	mov    %rbp,%rax
  3e:	49                   	rex.WB
  3f:	8d                   	.byte 0x8d

Code starting with the faulting instruction
===========================================
   0:	4d 89 d1             	mov    %r10,%r9
   3:	48 c1 ed 03          	shr    $0x3,%rbp
   7:	49 c1 e9 03          	shr    $0x3,%r9
   b:	48 01 c5             	add    %rax,%rbp
   e:	49 01 c1             	add    %rax,%r9
  11:	48 89 e8             	mov    %rbp,%rax
  14:	49                   	rex.WB
  15:	8d                   	.byte 0x8d
[ 6444.513033][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000212
[ 6444.513036][    C2] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6444.513043][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6444.513045][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6444.513048][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6444.513050][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6444.513052][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6444.513055][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6444.513060][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6444.513062][    C2] PKRU: 55555554
[ 6444.513063][    C2] Call Trace:
[ 6444.513068][    C2]  <TASK>
[ 6444.513081][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 6444.513089][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6444.513096][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6444.513102][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6444.513105][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6444.513110][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6444.513115][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6444.513120][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6444.513127][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6444.513130][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6444.513133][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6444.513138][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6444.513145][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6444.513150][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6444.513160][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6444.513168][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6444.513171][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6444.513174][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6444.513177][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6444.513180][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6444.513188][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6444.513193][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6444.513201][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6444.513204][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6444.513209][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6444.513217][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6444.513221][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6444.513229][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6444.513235][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6444.513242][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6444.513250][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6444.513254][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6444.513256][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6444.513261][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6444.513265][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6444.513272][ C2] ksys_write (fs/read_write.c:738) 
[ 6444.513276][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6444.513279][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6444.513288][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6444.513293][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6444.513299][    C2] RIP: 0033:0x7f471c970337
[ 6444.513310][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6444.513312][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6444.513315][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6444.513318][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6444.513320][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6444.513322][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6444.513324][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6462.679323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6462.679728][    C2] rcu: 2-....: (4234755 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1781212
| [ 6462.680240][    C2] rcu: (t=4238162 jiffies g=1286133 q=76013 ncpus=4)
| [ 6462.680502][    C2] Tainted: [L]=SOFTLOCKUP
[ 6462.680504][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6462.680507][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 6462.680520][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 6462.680523][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6462.680528][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6462.680530][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6462.680532][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6462.680535][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6462.680537][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6462.680539][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6462.680541][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6462.680545][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6462.680548][    C2] PKRU: 55555554
[ 6462.680549][    C2] Call Trace:
[ 6462.680551][    C2]  <TASK>
[ 6462.680553][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6462.680562][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6462.680568][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6462.680571][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6462.680576][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6462.680584][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6462.680588][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6462.680594][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6462.680597][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6462.680600][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6462.680605][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6462.680611][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6462.680616][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6462.680625][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6462.680633][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6462.680635][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6462.680639][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6462.680641][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6462.680644][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6462.680651][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6462.680654][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6462.680661][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6462.680665][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6462.680669][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6462.680676][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6462.680680][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6462.680686][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6462.680691][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6462.680697][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6462.680705][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6462.680708][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6462.680711][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6462.680715][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6462.680718][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6462.680726][ C2] ksys_write (fs/read_write.c:738) 
[ 6462.680729][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6462.680732][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6462.680740][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6462.680745][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6462.680749][    C2] RIP: 0033:0x7f471c970337
[ 6462.680760][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6462.680761][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6462.680765][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6462.680767][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6462.680769][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6462.680771][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6462.680773][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6488.512970][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6488.512975][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6488.512982][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6488.512995][    C2] Tainted: [L]=SOFTLOCKUP
[ 6488.512997][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6488.512999][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6488.513004][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6488.513008][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6488.513012][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6488.513014][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6488.513017][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6488.513019][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6488.513021][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6488.513024][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6488.513026][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6488.513030][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6488.513033][    C2] PKRU: 55555554
[ 6488.513034][    C2] Call Trace:
[ 6488.513037][    C2]  <TASK>
[ 6488.513041][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6488.513048][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6488.513055][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6488.513057][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6488.513062][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6488.513067][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6488.513071][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6488.513079][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6488.513082][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6488.513084][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6488.513089][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6488.513096][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6488.513101][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6488.513108][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6488.513116][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6488.513119][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6488.513122][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6488.513125][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6488.513128][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6488.513135][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6488.513139][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6488.513146][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6488.513150][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6488.513154][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6488.513160][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6488.513164][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6488.513170][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6488.513175][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6488.513182][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6488.513189][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6488.513193][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6488.513196][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6488.513200][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6488.513204][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6488.513211][ C2] ksys_write (fs/read_write.c:738) 
[ 6488.513215][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6488.513217][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6488.513225][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6488.513229][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6488.513233][    C2] RIP: 0033:0x7f471c970337
[ 6488.513241][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6488.513242][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6488.513245][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6488.513248][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6488.513250][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6488.513252][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6488.513254][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6516.512961][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6516.512965][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6516.512970][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6516.512981][    C2] Tainted: [L]=SOFTLOCKUP
[ 6516.512982][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6516.512984][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6516.512989][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6516.512992][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6516.512995][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6516.512998][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6516.513000][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6516.513002][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6516.513004][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6516.513006][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6516.513009][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6516.513013][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6516.513016][    C2] PKRU: 55555554
[ 6516.513017][    C2] Call Trace:
[ 6516.513019][    C2]  <TASK>
[ 6516.513022][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6516.513029][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6516.513034][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6516.513037][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6516.513042][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6516.513047][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6516.513051][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6516.513057][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6516.513060][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6516.513063][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6516.513068][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6516.513074][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6516.513079][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6516.513085][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6516.513091][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6516.513094][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6516.513098][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6516.513100][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6516.513103][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6516.513109][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6516.513112][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6516.513120][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6516.513123][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6516.513128][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6516.513133][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6516.513137][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6516.513141][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6516.513146][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6516.513152][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6516.513158][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6516.513162][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6516.513165][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6516.513169][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6516.513172][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6516.513179][ C2] ksys_write (fs/read_write.c:738) 
[ 6516.513183][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6516.513186][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6516.513192][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6516.513195][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6516.513199][    C2] RIP: 0033:0x7f471c970337
[ 6516.513204][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6516.513205][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6516.513208][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6516.513211][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6516.513213][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6516.513215][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6516.513217][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6518.174813][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6518.175093][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 6518.175261][    C2] NMI backtrace for cpu 2
| [ 6518.175270][    C2] Tainted: [L]=SOFTLOCKUP
[ 6518.175272][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6518.175274][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6518.175281][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6518.175284][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6518.175287][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6518.175289][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6518.175291][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6518.175293][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6518.175295][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6518.175297][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6518.175300][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6518.175303][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6518.175305][    C2] PKRU: 55555554
[ 6518.175307][    C2] Call Trace:
[ 6518.175308][    C2]  <TASK>
[ 6518.175311][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6518.175319][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6518.175323][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6518.175326][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6518.175329][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6518.175335][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6518.175339][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6518.175345][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6518.175347][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6518.175350][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6518.175355][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6518.175361][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6518.175366][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6518.175371][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6518.175378][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6518.175381][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6518.175384][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6518.175387][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6518.175390][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6518.175395][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6518.175399][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6518.175406][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6518.175410][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6518.175414][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6518.175418][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6518.175422][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6518.175426][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6518.175430][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6518.175437][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6518.175442][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6518.175446][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6518.175448][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6518.175452][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6518.175456][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6518.175462][ C2] ksys_write (fs/read_write.c:738) 
[ 6518.175466][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6518.175468][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6518.175474][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6518.175478][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6518.175481][    C2] RIP: 0033:0x7f471c970337
[ 6518.175485][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6518.175487][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6518.175490][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6518.175492][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6518.175494][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6518.175496][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6518.175498][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6540.682321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6540.682734][    C2] rcu: 2-....: (4312694 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1818122
| [ 6540.683252][    C2] rcu: (t=4316165 jiffies g=1286133 q=77358 ncpus=4)
| [ 6540.683502][    C2] Tainted: [L]=SOFTLOCKUP
[ 6540.683503][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6540.683506][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6540.683517][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6540.683521][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6540.683525][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6540.683527][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6540.683530][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6540.683532][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6540.683534][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6540.683536][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6540.683538][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6540.683542][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6540.683544][    C2] PKRU: 55555554
[ 6540.683546][    C2] Call Trace:
[ 6540.683548][    C2]  <TASK>
[ 6540.683550][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6540.683558][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6540.683564][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6540.683566][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6540.683572][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6540.683579][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6540.683583][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6540.683589][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6540.683592][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6540.683595][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6540.683600][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6540.683605][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6540.683611][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6540.683618][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6540.683625][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6540.683628][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6540.683631][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6540.683633][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6540.683636][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6540.683643][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6540.683646][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6540.683653][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6540.683657][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6540.683661][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6540.683666][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6540.683670][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6540.683676][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6540.683681][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6540.683687][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6540.683694][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6540.683698][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6540.683700][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6540.683704][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6540.683708][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6540.683715][ C2] ksys_write (fs/read_write.c:738) 
[ 6540.683718][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6540.683721][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6540.683730][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6540.683733][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6540.683737][    C2] RIP: 0033:0x7f471c970337
[ 6540.683745][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6540.683747][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6540.683750][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6540.683752][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6540.683754][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6540.683756][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6540.683759][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6568.512968][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6568.512973][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6568.512979][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6568.512992][    C2] Tainted: [L]=SOFTLOCKUP
[ 6568.512994][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6568.512996][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6568.513001][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6568.513004][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6568.513007][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6568.513010][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6568.513012][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6568.513014][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6568.513015][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6568.513018][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6568.513021][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6568.513024][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6568.513026][    C2] PKRU: 55555554
[ 6568.513028][    C2] Call Trace:
[ 6568.513031][    C2]  <TASK>
[ 6568.513034][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6568.513042][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6568.513046][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6568.513049][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6568.513054][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6568.513058][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6568.513063][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6568.513070][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6568.513073][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6568.513076][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6568.513081][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6568.513087][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6568.513092][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6568.513098][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6568.513106][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6568.513108][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6568.513112][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6568.513115][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6568.513118][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6568.513123][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6568.513127][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6568.513135][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6568.513139][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6568.513143][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6568.513148][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6568.513152][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6568.513158][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6568.513163][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6568.513170][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6568.513176][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6568.513180][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6568.513183][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6568.513187][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6568.513191][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6568.513198][ C2] ksys_write (fs/read_write.c:738) 
[ 6568.513202][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6568.513204][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6568.513212][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6568.513216][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6568.513220][    C2] RIP: 0033:0x7f471c970337
[ 6568.513226][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6568.513228][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6568.513231][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6568.513234][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6568.513236][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6568.513238][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6568.513240][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6596.512966][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6596.512970][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6596.512976][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6596.512988][    C2] Tainted: [L]=SOFTLOCKUP
[ 6596.512990][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6596.512992][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6596.512997][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6596.513000][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6596.513003][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6596.513006][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6596.513008][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6596.513010][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6596.513012][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6596.513015][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6596.513018][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6596.513021][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6596.513024][    C2] PKRU: 55555554
[ 6596.513025][    C2] Call Trace:
[ 6596.513028][    C2]  <TASK>
[ 6596.513032][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6596.513039][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6596.513044][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6596.513047][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6596.513052][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6596.513057][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6596.513061][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6596.513068][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6596.513071][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6596.513074][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6596.513079][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6596.513085][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6596.513101][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6596.513107][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6596.513115][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6596.513117][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6596.513121][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6596.513123][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6596.513126][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6596.513132][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6596.513135][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6596.513143][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6596.513147][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6596.513151][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6596.513156][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6596.513160][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6596.513166][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6596.513171][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6596.513177][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6596.513184][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6596.513188][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6596.513191][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6596.513195][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6596.513198][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6596.513205][ C2] ksys_write (fs/read_write.c:738) 
[ 6596.513209][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6596.513212][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6596.513219][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6596.513223][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6596.513228][    C2] RIP: 0033:0x7f471c970337
[ 6596.513234][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6596.513236][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6596.513239][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6596.513242][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6596.513244][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6596.513246][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6596.513248][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6616.477946][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6616.478142][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 6616.478342][    C2] NMI backtrace for cpu 2
| [ 6616.478359][    C2] Tainted: [L]=SOFTLOCKUP
[ 6616.478361][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6616.478364][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6616.478377][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6616.478380][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6616.478384][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6616.478386][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6616.478389][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6616.478391][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6616.478393][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6616.478395][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6616.478398][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6616.478402][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6616.478404][    C2] PKRU: 55555554
[ 6616.478405][    C2] Call Trace:
[ 6616.478408][    C2]  <TASK>
[ 6616.478412][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6616.478420][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6616.478427][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6616.478430][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6616.478434][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6616.478443][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6616.478447][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6616.478453][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6616.478456][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6616.478459][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6616.478464][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6616.478470][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6616.478475][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6616.478483][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6616.478491][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6616.478494][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6616.478497][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6616.478500][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6616.478503][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6616.478510][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6616.478514][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6616.478522][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6616.478526][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6616.478530][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6616.478536][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6616.478540][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6616.478547][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6616.478552][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6616.478559][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6616.478566][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6616.478570][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6616.478573][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6616.478577][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6616.478580][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6616.478587][ C2] ksys_write (fs/read_write.c:738) 
[ 6616.478591][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6616.478593][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6616.478601][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6616.478606][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6616.478610][    C2] RIP: 0033:0x7f471c970337
[ 6616.478619][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6616.478621][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6616.478625][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6616.478627][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6616.478629][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6616.478631][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6616.478633][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6618.685336][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6618.685715][    C2] rcu: 2-....: (4390633 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1855064
| [ 6618.686241][    C2] rcu: (t=4394168 jiffies g=1286133 q=78706 ncpus=4)
| [ 6618.686492][    C2] Tainted: [L]=SOFTLOCKUP
[ 6618.686494][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6618.686496][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6618.686505][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6618.686508][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6618.686512][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6618.686515][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6618.686517][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6618.686519][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6618.686521][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6618.686523][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6618.686526][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6618.686530][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6618.686532][    C2] PKRU: 55555554
[ 6618.686533][    C2] Call Trace:
[ 6618.686535][    C2]  <TASK>
[ 6618.686537][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6618.686544][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6618.686549][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6618.686552][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6618.686557][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6618.686564][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6618.686568][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6618.686574][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6618.686577][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6618.686579][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6618.686584][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6618.686590][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6618.686595][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6618.686603][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6618.686611][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6618.686613][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6618.686617][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6618.686619][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6618.686622][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6618.686628][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6618.686632][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6618.686639][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6618.686643][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6618.686647][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6618.686652][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6618.686657][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6618.686663][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6618.686667][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6618.686674][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6618.686681][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6618.686684][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6618.686687][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6618.686690][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6618.686694][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6618.686701][ C2] ksys_write (fs/read_write.c:738) 
[ 6618.686705][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6618.686707][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6618.686715][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6618.686719][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6618.686723][    C2] RIP: 0033:0x7f471c970337
[ 6618.686730][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6618.686732][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6618.686735][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6618.686737][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6618.686739][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6618.686741][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6618.686743][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6644.512967][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6644.512971][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6644.512977][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6644.512990][    C2] Tainted: [L]=SOFTLOCKUP
[ 6644.512992][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6644.512994][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6644.512998][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6644.513001][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6644.513004][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6644.513007][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6644.513009][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6644.513011][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6644.513013][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6644.513016][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6644.513019][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6644.513022][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6644.513024][    C2] PKRU: 55555554
[ 6644.513026][    C2] Call Trace:
[ 6644.513028][    C2]  <TASK>
[ 6644.513030][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6644.513038][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6644.513043][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6644.513045][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6644.513050][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6644.513054][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6644.513058][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6644.513065][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6644.513068][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6644.513072][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6644.513076][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6644.513083][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6644.513088][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6644.513094][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6644.513102][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6644.513105][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6644.513108][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6644.513111][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6644.513114][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6644.513120][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6644.513124][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6644.513131][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6644.513135][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6644.513139][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6644.513145][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6644.513149][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6644.513154][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6644.513160][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6644.513167][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6644.513173][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6644.513177][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6644.513179][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6644.513183][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6644.513187][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6644.513194][ C2] ksys_write (fs/read_write.c:738) 
[ 6644.513198][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6644.513200][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6644.513208][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6644.513212][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6644.513216][    C2] RIP: 0033:0x7f471c970337
[ 6644.513221][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6644.513223][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6644.513226][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6644.513228][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6644.513231][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6644.513233][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6644.513235][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6672.512979][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6672.512983][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6672.512989][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6672.513001][    C2] Tainted: [L]=SOFTLOCKUP
[ 6672.513003][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6672.513005][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6672.513010][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6672.513013][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6672.513016][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6672.513019][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6672.513021][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6672.513023][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6672.513025][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6672.513028][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6672.513031][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6672.513034][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6672.513036][    C2] PKRU: 55555554
[ 6672.513038][    C2] Call Trace:
[ 6672.513040][    C2]  <TASK>
[ 6672.513044][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6672.513051][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6672.513056][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6672.513059][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6672.513063][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6672.513068][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6672.513072][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6672.513079][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6672.513081][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6672.513084][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6672.513089][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6672.513095][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6672.513100][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6672.513107][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6672.513115][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6672.513118][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6672.513121][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6672.513123][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6672.513126][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6672.513133][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6672.513136][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6672.513144][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6672.513147][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6672.513151][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6672.513157][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6672.513161][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6672.513166][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6672.513171][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6672.513178][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6672.513185][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6672.513188][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6672.513191][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6672.513195][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6672.513199][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6672.513206][ C2] ksys_write (fs/read_write.c:738) 
[ 6672.513210][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6672.513212][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6672.513220][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6672.513224][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6672.513228][    C2] RIP: 0033:0x7f471c970337
[ 6672.513235][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6672.513237][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6672.513240][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6672.513242][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6672.513244][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6672.513246][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6672.513248][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6696.688322][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6696.688727][    C2] rcu: 2-....: (4468586 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1892004
| [ 6696.689245][    C2] rcu: (t=4472171 jiffies g=1286133 q=79729 ncpus=4)
| [ 6696.689500][    C2] Tainted: [L]=SOFTLOCKUP
[ 6696.689502][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6696.689505][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6696.689517][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6696.689521][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6696.689525][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6696.689528][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6696.689530][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6696.689532][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6696.689535][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6696.689537][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6696.689539][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6696.689543][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6696.689545][    C2] PKRU: 55555554
[ 6696.689547][    C2] Call Trace:
[ 6696.689548][    C2]  <TASK>
[ 6696.689551][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6696.689558][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6696.689564][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6696.689567][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6696.689572][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6696.689579][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6696.689583][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6696.689589][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6696.689592][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6696.689595][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6696.689599][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6696.689605][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6696.689611][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6696.689620][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6696.689627][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6696.689630][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6696.689633][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6696.689636][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6696.689639][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6696.689647][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6696.689650][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6696.689658][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6696.689662][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6696.689666][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6696.689673][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6696.689677][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6696.689682][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6696.689688][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6696.689694][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6696.689702][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6696.689706][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6696.689708][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6696.689712][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6696.689716][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6696.689723][ C2] ksys_write (fs/read_write.c:738) 
[ 6696.689726][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6696.689729][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6696.689737][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6696.689741][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6696.689745][    C2] RIP: 0033:0x7f471c970337
[ 6696.689755][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6696.689757][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6696.689760][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6696.689762][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6696.689764][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6696.689766][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6696.689768][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6714.781873][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6714.782067][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 6714.782234][    C2] NMI backtrace for cpu 2
| [ 6714.782247][    C2] Tainted: [L]=SOFTLOCKUP
[ 6714.782248][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6714.782251][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6714.782258][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6714.782261][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6714.782265][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6714.782267][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6714.782269][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6714.782272][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6714.782274][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6714.782276][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6714.782279][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6714.782282][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6714.782285][    C2] PKRU: 55555554
[ 6714.782286][    C2] Call Trace:
[ 6714.782288][    C2]  <TASK>
[ 6714.782291][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6714.782298][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6714.782302][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6714.782305][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6714.782309][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6714.782317][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6714.782320][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6714.782327][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6714.782329][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6714.782332][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6714.782337][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6714.782343][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6714.782348][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6714.782355][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6714.782362][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6714.782365][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6714.782368][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6714.782371][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6714.782374][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6714.782378][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6714.782382][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6714.782389][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6714.782392][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6714.782396][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6714.782401][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6714.782405][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6714.782410][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6714.782415][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6714.782422][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6714.782427][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6714.782431][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6714.782433][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6714.782437][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6714.782441][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6714.782448][ C2] ksys_write (fs/read_write.c:738) 
[ 6714.782451][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6714.782454][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6714.782460][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6714.782464][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6714.782468][    C2] RIP: 0033:0x7f471c970337
[ 6714.782474][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6714.782476][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6714.782479][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6714.782481][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6714.782483][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6714.782485][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6714.782487][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6740.512975][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6740.512980][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6740.512986][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6740.513000][    C2] Tainted: [L]=SOFTLOCKUP
[ 6740.513002][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6740.513004][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 6740.513009][ C2] Code: 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d 3f e5 fd <41> 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44
All code
========
   0:	01 00                	add    %eax,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	49 c1 ee 03          	shr    $0x3,%r14
   8:	41 83 e5 07          	and    $0x7,%r13d
   c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  13:	fc ff df 
  16:	49 01 c6             	add    %rax,%r14
  19:	41 83 c5 03          	add    $0x3,%r13d
  1d:	be 04 00 00 00       	mov    $0x4,%esi
  22:	48 89 ef             	mov    %rbp,%rdi
  25:	e8 5d 3f e5 fd       	call   0xfffffffffde53f87
  2a:*	41 0f b6 06          	movzbl (%r14),%eax		<-- trapping instruction
  2e:	41 38 c5             	cmp    %al,%r13b
  31:	7c 08                	jl     0x3b
  33:	84 c0                	test   %al,%al
  35:	0f 85 8d 07 00 00    	jne    0x7c8
  3b:	8b 45 00             	mov    0x0(%rbp),%eax
  3e:	89                   	.byte 0x89
  3f:	44                   	rex.R

Code starting with the faulting instruction
===========================================
   0:	41 0f b6 06          	movzbl (%r14),%eax
   4:	41 38 c5             	cmp    %al,%r13b
   7:	7c 08                	jl     0x11
   9:	84 c0                	test   %al,%al
   b:	0f 85 8d 07 00 00    	jne    0x79e
  11:	8b 45 00             	mov    0x0(%rbp),%eax
  14:	89                   	.byte 0x89
  15:	44                   	rex.R
[ 6740.513012][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000246
[ 6740.513016][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6740.513018][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6740.513020][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6740.513022][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6740.513024][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6740.513027][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6740.513030][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6740.513033][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6740.513036][    C2] PKRU: 55555554
[ 6740.513037][    C2] Call Trace:
[ 6740.513041][    C2]  <TASK>
[ 6740.513045][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6740.513052][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6740.513058][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6740.513061][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6740.513065][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6740.513070][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6740.513074][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6740.513081][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6740.513084][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6740.513087][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6740.513092][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6740.513098][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6740.513103][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6740.513111][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6740.513119][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6740.513122][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6740.513125][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6740.513128][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6740.513131][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6740.513137][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6740.513140][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6740.513148][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6740.513151][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6740.513156][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6740.513161][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6740.513166][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6740.513172][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6740.513177][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6740.513184][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6740.513191][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6740.513195][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6740.513197][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6740.513201][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6740.513205][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6740.513213][ C2] ksys_write (fs/read_write.c:738) 
[ 6740.513216][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6740.513219][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6740.513227][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6740.513231][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6740.513236][    C2] RIP: 0033:0x7f471c970337
[ 6740.513245][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6740.513246][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6740.513249][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6740.513251][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6740.513253][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6740.513256][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6740.513258][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6768.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6768.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6768.512994][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6768.513009][    C2] Tainted: [L]=SOFTLOCKUP
[ 6768.513012][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6768.513014][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6768.513019][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6768.513023][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6768.513026][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6768.513028][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6768.513030][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6768.513032][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6768.513034][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6768.513037][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6768.513040][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6768.513043][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6768.513046][    C2] PKRU: 55555554
[ 6768.513047][    C2] Call Trace:
[ 6768.513051][    C2]  <TASK>
[ 6768.513056][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6768.513064][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6768.513071][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6768.513074][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6768.513079][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6768.513084][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6768.513089][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6768.513095][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6768.513098][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6768.513101][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6768.513106][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6768.513112][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6768.513117][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6768.513126][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6768.513134][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6768.513137][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6768.513140][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6768.513142][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6768.513145][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6768.513152][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6768.513156][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6768.513164][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6768.513168][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6768.513171][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6768.513179][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6768.513183][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6768.513189][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6768.513195][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6768.513202][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6768.513209][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6768.513214][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6768.513216][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6768.513220][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6768.513224][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6768.513232][ C2] ksys_write (fs/read_write.c:738) 
[ 6768.513235][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6768.513239][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6768.513247][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6768.513252][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6768.513257][    C2] RIP: 0033:0x7f471c970337
[ 6768.513267][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6768.513269][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6768.513272][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6768.513274][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6768.513277][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6768.513279][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6768.513281][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6774.691322][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6774.691682][    C2] rcu: 2-....: (4546525 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1928779
| [ 6774.692194][    C2] rcu: (t=4550174 jiffies g=1286133 q=81074 ncpus=4)
| [ 6774.692443][    C2] Tainted: [L]=SOFTLOCKUP
[ 6774.692445][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6774.692447][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6774.692456][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6774.692460][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6774.692463][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6774.692466][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6774.692468][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6774.692470][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6774.692472][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6774.692474][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6774.692477][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6774.692480][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6774.692482][    C2] PKRU: 55555554
[ 6774.692484][    C2] Call Trace:
[ 6774.692485][    C2]  <TASK>
[ 6774.692487][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6774.692495][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6774.692500][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6774.692503][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6774.692508][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6774.692516][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6774.692519][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6774.692525][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6774.692528][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6774.692531][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6774.692536][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6774.692541][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6774.692546][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6774.692554][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6774.692562][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6774.692565][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6774.692568][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6774.692571][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6774.692574][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6774.692580][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6774.692584][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6774.692591][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6774.692595][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6774.692599][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6774.692605][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6774.692609][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6774.692615][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6774.692620][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6774.692627][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6774.692635][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6774.692638][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6774.692641][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6774.692645][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6774.692649][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6774.692656][ C2] ksys_write (fs/read_write.c:738) 
[ 6774.692659][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6774.692662][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6774.692669][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6774.692673][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6774.692677][    C2] RIP: 0033:0x7f471c970337
[ 6774.692683][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6774.692685][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6774.692688][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6774.692690][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6774.692692][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6774.692694][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6774.692696][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6800.512965][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6800.512970][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6800.512977][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6800.512988][    C2] Tainted: [L]=SOFTLOCKUP
[ 6800.512989][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6800.512992][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 6800.512997][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 6800.513000][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6800.513003][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6800.513006][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6800.513008][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6800.513010][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6800.513012][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6800.513014][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6800.513017][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6800.513021][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6800.513023][    C2] PKRU: 55555554
[ 6800.513024][    C2] Call Trace:
[ 6800.513027][    C2]  <TASK>
[ 6800.513030][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6800.513037][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6800.513043][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6800.513045][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6800.513049][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6800.513054][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6800.513058][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6800.513065][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6800.513068][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6800.513071][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6800.513075][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6800.513081][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6800.513086][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6800.513092][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6800.513100][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6800.513102][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6800.513105][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6800.513108][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6800.513111][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6800.513117][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6800.513121][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6800.513128][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6800.513132][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6800.513136][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6800.513141][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6800.513145][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6800.513151][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6800.513156][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6800.513162][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6800.513169][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6800.513173][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6800.513175][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6800.513180][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6800.513183][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6800.513190][ C2] ksys_write (fs/read_write.c:738) 
[ 6800.513194][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6800.513197][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6800.513204][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6800.513208][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6800.513212][    C2] RIP: 0033:0x7f471c970337
[ 6800.513217][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6800.513219][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6800.513222][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6800.513225][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6800.513227][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6800.513229][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6800.513231][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6813.085913][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6813.086102][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 6813.086270][    C2] NMI backtrace for cpu 2
| [ 6813.086281][    C2] Tainted: [L]=SOFTLOCKUP
[ 6813.086283][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6813.086285][ C2] RIP: 0010:vring_interrupt (drivers/virtio/virtio_ring.c:808 drivers/virtio/virtio_ring.c:2679 drivers/virtio/virtio_ring.c:2694) 
[ 6813.086292][ C2] Code: c1 ea 03 80 3c 02 00 0f 85 d1 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5d 70 48 8d 7b 02 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 b3 00 00 00 66
All code
========
   0:	c1 ea 03             	shr    $0x3,%edx
   3:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   7:	0f 85 d1 00 00 00    	jne    0xde
   d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  14:	fc ff df 
  17:	48 8b 5d 70          	mov    0x70(%rbp),%rbx
  1b:	48 8d 7b 02          	lea    0x2(%rbx),%rdi
  1f:	48 89 fa             	mov    %rdi,%rdx
  22:	48 c1 ea 03          	shr    $0x3,%rdx
  26:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
  2a:*	48 89 f8             	mov    %rdi,%rax		<-- trapping instruction
  2d:	83 e0 07             	and    $0x7,%eax
  30:	83 c0 01             	add    $0x1,%eax
  33:	38 d0                	cmp    %dl,%al
  35:	7c 08                	jl     0x3f
  37:	84 d2                	test   %dl,%dl
  39:	0f 85 b3 00 00 00    	jne    0xf2
  3f:	66                   	data16

Code starting with the faulting instruction
===========================================
   0:	48 89 f8             	mov    %rdi,%rax
   3:	83 e0 07             	and    $0x7,%eax
   6:	83 c0 01             	add    $0x1,%eax
   9:	38 d0                	cmp    %dl,%al
   b:	7c 08                	jl     0x15
   d:	84 d2                	test   %dl,%dl
   f:	0f 85 b3 00 00 00    	jne    0xc8
  15:	66                   	data16
[ 6813.086296][    C2] RSP: 0018:ffffc90000218ea0 EFLAGS: 00000806
[ 6813.086299][    C2] RAX: dffffc0000000000 RBX: ffff888006805000 RCX: ffffffffa03f1df0
[ 6813.086301][    C2] RDX: 0000000000000000 RSI: ffff8880066df400 RDI: ffff888006805002
[ 6813.086303][    C2] RBP: ffff8880066df400 R08: 0000000000000001 R09: fffff520000431c6
[ 6813.086306][    C2] R10: 0000000000000003 R11: ffffc90000218ff8 R12: 0000000000000000
[ 6813.086308][    C2] R13: ffff88800625bd78 R14: dffffc0000000000 R15: ffff88800625bd38
[ 6813.086310][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6813.086312][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6813.086317][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6813.086319][    C2] PKRU: 55555554
[ 6813.086320][    C2] Call Trace:
[ 6813.086323][    C2]  <IRQ>
[ 6813.086325][ C2] vm_interrupt (drivers/virtio/virtio_mmio.c:319 (discriminator 3)) 
[ 6813.086333][ C2] ? __pfx_vm_interrupt (drivers/virtio/virtio_mmio.c:301) 
[ 6813.086336][ C2] __handle_irq_event_percpu (kernel/irq/handle.c:159 (discriminator 1)) 
[ 6813.086344][ C2] handle_irq_event (kernel/irq/handle.c:195 kernel/irq/handle.c:210) 
[ 6813.086348][ C2] handle_fasteoi_irq (kernel/irq/chip.c:644 kernel/irq/chip.c:708) 
[ 6813.086354][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 6813.086362][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 6813.086368][    C2]  </IRQ>
[ 6813.086369][    C2]  <TASK>
[ 6813.086371][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 6813.086375][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 6813.086382][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 6813.086386][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 6813.086388][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6813.086390][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6813.086392][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6813.086394][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6813.086397][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6813.086400][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 6813.086407][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 6813.086411][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6813.086418][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6813.086422][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6813.086425][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6813.086429][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6813.086436][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6813.086439][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6813.086446][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6813.086449][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6813.086452][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6813.086457][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6813.086462][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6813.086467][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6813.086472][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6813.086479][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6813.086482][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6813.086485][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6813.086488][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6813.086491][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6813.086496][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6813.086500][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6813.086507][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6813.086511][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6813.086514][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6813.086520][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6813.086523][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6813.086528][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6813.086532][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6813.086538][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6813.086543][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6813.086547][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6813.086549][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6813.086553][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6813.086557][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6813.086564][ C2] ksys_write (fs/read_write.c:738) 
[ 6813.086568][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6813.086570][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6813.086577][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6813.086580][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6813.086583][    C2] RIP: 0033:0x7f471c970337
[ 6813.086589][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6813.086590][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6813.086593][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6813.086596][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6813.086598][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6813.086600][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6813.086602][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6840.512983][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6840.512987][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6840.512995][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6840.513011][    C2] Tainted: [L]=SOFTLOCKUP
[ 6840.513012][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6840.513014][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6840.513020][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6840.513023][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6840.513027][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6840.513029][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6840.513032][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6840.513034][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6840.513036][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6840.513038][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6840.513041][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6840.513046][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6840.513048][    C2] PKRU: 55555554
[ 6840.513049][    C2] Call Trace:
[ 6840.513054][    C2]  <TASK>
[ 6840.513058][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6840.513066][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6840.513074][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6840.513076][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6840.513081][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6840.513086][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6840.513091][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6840.513099][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6840.513102][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6840.513104][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6840.513109][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6840.513116][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6840.513121][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6840.513130][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6840.513138][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6840.513142][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6840.513145][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6840.513148][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6840.513151][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6840.513158][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6840.513162][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6840.513171][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6840.513174][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6840.513179][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6840.513186][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6840.513191][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6840.513198][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6840.513203][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6840.513210][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6840.513219][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6840.513223][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6840.513226][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6840.513230][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6840.513234][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6840.513242][ C2] ksys_write (fs/read_write.c:738) 
[ 6840.513246][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6840.513248][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6840.513256][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6840.513261][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6840.513266][    C2] RIP: 0033:0x7f471c970337
[ 6840.513276][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6840.513278][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6840.513281][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6840.513283][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6840.513286][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6840.513288][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6840.513290][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6852.694321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6852.694624][    C2] rcu: 2-....: (4624459 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=1966128
| [ 6852.695120][    C2] rcu: (t=4628177 jiffies g=1286133 q=82515 ncpus=4)
| [ 6852.695366][    C2] Tainted: [L]=SOFTLOCKUP
[ 6852.695368][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6852.695371][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6852.695382][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6852.695386][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6852.695390][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6852.695392][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6852.695394][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6852.695396][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6852.695398][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6852.695401][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6852.695404][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6852.695408][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6852.695410][    C2] PKRU: 55555554
[ 6852.695411][    C2] Call Trace:
[ 6852.695413][    C2]  <TASK>
[ 6852.695415][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6852.695423][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6852.695429][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6852.695432][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6852.695436][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6852.695443][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6852.695447][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6852.695454][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6852.695457][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6852.695460][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6852.695465][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6852.695470][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6852.695476][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6852.695485][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6852.695492][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6852.695495][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6852.695499][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6852.695501][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6852.695504][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6852.695512][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6852.695515][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6852.695522][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6852.695526][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6852.695530][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6852.695537][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6852.695541][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6852.695547][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6852.695552][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6852.695559][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6852.695566][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6852.695570][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6852.695573][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6852.695577][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6852.695581][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6852.695588][ C2] ksys_write (fs/read_write.c:738) 
[ 6852.695591][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6852.695594][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6852.695603][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6852.695607][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6852.695611][    C2] RIP: 0033:0x7f471c970337
[ 6852.695621][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6852.695623][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6852.695626][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6852.695628][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6852.695631][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6852.695633][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6852.695635][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6880.512971][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6880.512976][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6880.512982][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6880.512994][    C2] Tainted: [L]=SOFTLOCKUP
[ 6880.512996][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6880.512998][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6880.513003][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6880.513007][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6880.513010][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6880.513012][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6880.513014][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6880.513016][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6880.513018][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6880.513021][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6880.513024][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6880.513028][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6880.513030][    C2] PKRU: 55555554
[ 6880.513031][    C2] Call Trace:
[ 6880.513034][    C2]  <TASK>
[ 6880.513037][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6880.513045][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6880.513050][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6880.513053][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6880.513058][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6880.513063][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6880.513067][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6880.513073][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6880.513076][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6880.513079][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6880.513084][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6880.513090][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6880.513096][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6880.513104][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6880.513111][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6880.513114][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6880.513118][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6880.513120][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6880.513123][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6880.513130][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6880.513134][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6880.513142][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6880.513146][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6880.513150][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6880.513156][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6880.513160][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6880.513166][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6880.513171][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6880.513178][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6880.513184][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6880.513188][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6880.513190][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6880.513195][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6880.513199][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6880.513206][ C2] ksys_write (fs/read_write.c:738) 
[ 6880.513210][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6880.513213][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6880.513220][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6880.513224][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6880.513228][    C2] RIP: 0033:0x7f471c970337
[ 6880.513236][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6880.513238][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6880.513241][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6880.513243][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6880.513246][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6880.513248][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6880.513250][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6908.512963][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6908.512967][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6908.512972][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6908.512983][    C2] Tainted: [L]=SOFTLOCKUP
[ 6908.512985][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6908.512987][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 6908.512992][ C2] Code: 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d 3f e5 fd <41> 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44
All code
========
   0:	01 00                	add    %eax,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	49 c1 ee 03          	shr    $0x3,%r14
   8:	41 83 e5 07          	and    $0x7,%r13d
   c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  13:	fc ff df 
  16:	49 01 c6             	add    %rax,%r14
  19:	41 83 c5 03          	add    $0x3,%r13d
  1d:	be 04 00 00 00       	mov    $0x4,%esi
  22:	48 89 ef             	mov    %rbp,%rdi
  25:	e8 5d 3f e5 fd       	call   0xfffffffffde53f87
  2a:*	41 0f b6 06          	movzbl (%r14),%eax		<-- trapping instruction
  2e:	41 38 c5             	cmp    %al,%r13b
  31:	7c 08                	jl     0x3b
  33:	84 c0                	test   %al,%al
  35:	0f 85 8d 07 00 00    	jne    0x7c8
  3b:	8b 45 00             	mov    0x0(%rbp),%eax
  3e:	89                   	.byte 0x89
  3f:	44                   	rex.R

Code starting with the faulting instruction
===========================================
   0:	41 0f b6 06          	movzbl (%r14),%eax
   4:	41 38 c5             	cmp    %al,%r13b
   7:	7c 08                	jl     0x11
   9:	84 c0                	test   %al,%al
   b:	0f 85 8d 07 00 00    	jne    0x79e
  11:	8b 45 00             	mov    0x0(%rbp),%eax
  14:	89                   	.byte 0x89
  15:	44                   	rex.R
[ 6908.512995][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000246
[ 6908.512998][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6908.513001][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6908.513003][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6908.513005][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6908.513007][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6908.513009][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6908.513012][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6908.513015][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6908.513018][    C2] PKRU: 55555554
[ 6908.513019][    C2] Call Trace:
[ 6908.513021][    C2]  <TASK>
[ 6908.513024][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6908.513032][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6908.513036][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6908.513039][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6908.513044][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6908.513048][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6908.513052][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6908.513059][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6908.513062][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6908.513065][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6908.513070][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6908.513076][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6908.513081][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6908.513088][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6908.513095][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6908.513098][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6908.513101][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6908.513104][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6908.513107][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6908.513112][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6908.513116][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6908.513123][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6908.513127][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6908.513131][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6908.513136][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6908.513141][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6908.513147][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6908.513151][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6908.513158][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6908.513165][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6908.513168][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6908.513171][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6908.513176][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6908.513180][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6908.513187][ C2] ksys_write (fs/read_write.c:738) 
[ 6908.513191][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6908.513194][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6908.513201][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6908.513206][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6908.513210][    C2] RIP: 0033:0x7f471c970337
[ 6908.513215][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6908.513217][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6908.513221][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6908.513223][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6908.513225][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6908.513227][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6908.513229][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6911.389773][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6911.389978][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 6911.390212][    C2] NMI backtrace for cpu 2
| [ 6911.390222][    C2] Tainted: [L]=SOFTLOCKUP
[ 6911.390223][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6911.390225][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:31) 
[ 6911.390233][ C2] Code: 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
   0:	41 5c                	pop    %r12
   2:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fb2
   7:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
  2a:*	89 f6                	mov    %esi,%esi		<-- trapping instruction
  2c:	31 d2                	xor    %edx,%edx
  2e:	e9 4f f0 ff ff       	jmp    0xfffffffffffff082
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 f6                	mov    %esi,%esi
   2:	31 d2                	xor    %edx,%edx
   4:	e9 4f f0 ff ff       	jmp    0xfffffffffffff058
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 6911.390236][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 6911.390239][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6911.390241][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6911.390244][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6911.390246][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6911.390248][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6911.390250][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6911.390253][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6911.390256][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6911.390258][    C2] PKRU: 55555554
[ 6911.390260][    C2] Call Trace:
[ 6911.390262][    C2]  <TASK>
[ 6911.390263][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 6911.390270][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6911.390277][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6911.390280][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6911.390283][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6911.390287][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6911.390292][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6911.390296][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6911.390302][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6911.390305][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6911.390308][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6911.390313][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6911.390320][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6911.390325][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6911.390330][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6911.390337][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6911.390340][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6911.390343][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6911.390346][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6911.390349][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6911.390354][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6911.390358][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6911.390365][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6911.390368][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6911.390373][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6911.390377][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6911.390381][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6911.390385][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6911.390389][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6911.390395][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6911.390401][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6911.390404][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6911.390407][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6911.390411][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6911.390415][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6911.390422][ C2] ksys_write (fs/read_write.c:738) 
[ 6911.390425][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6911.390428][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6911.390433][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6911.390437][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6911.390440][    C2] RIP: 0033:0x7f471c970337
[ 6911.390444][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6911.390446][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6911.390449][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6911.390451][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6911.390453][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6911.390455][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6911.390457][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6930.697321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6930.697708][    C2] rcu: 2-....: (4702401 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2005035
| [ 6930.698216][    C2] rcu: (t=4706180 jiffies g=1286133 q=83869 ncpus=4)
| [ 6930.698460][    C2] Tainted: [L]=SOFTLOCKUP
[ 6930.698462][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6930.698464][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 6930.698473][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 6930.698476][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000282
[ 6930.698481][    C2] RAX: ffff88800b85eb34 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6930.698483][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6930.698485][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6930.698487][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6930.698490][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6930.698492][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6930.698495][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6930.698498][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6930.698501][    C2] PKRU: 55555554
[ 6930.698502][    C2] Call Trace:
[ 6930.698504][    C2]  <TASK>
[ 6930.698506][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 6930.698513][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6930.698520][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6930.698525][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6930.698528][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6930.698532][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6930.698539][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6930.698543][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6930.698550][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6930.698553][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6930.698556][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6930.698561][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6930.698567][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6930.698572][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6930.698580][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6930.698588][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6930.698590][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6930.698594][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6930.698596][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6930.698599][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6930.698605][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6930.698609][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6930.698616][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6930.698620][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6930.698624][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6930.698629][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6930.698633][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6930.698639][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6930.698644][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6930.698650][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6930.698656][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6930.698659][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6930.698661][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6930.698665][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6930.698669][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6930.698676][ C2] ksys_write (fs/read_write.c:738) 
[ 6930.698679][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6930.698682][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6930.698689][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6930.698693][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6930.698697][    C2] RIP: 0033:0x7f471c970337
[ 6930.698705][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6930.698707][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6930.698710][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6930.698713][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6930.698715][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6930.698717][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6930.698719][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6956.512968][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6956.512972][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6956.512976][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6956.512988][    C2] Tainted: [L]=SOFTLOCKUP
[ 6956.512990][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6956.512992][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6956.512996][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6956.512999][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6956.513002][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6956.513005][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6956.513007][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6956.513009][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6956.513011][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6956.513014][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6956.513016][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6956.513020][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6956.513023][    C2] PKRU: 55555554
[ 6956.513024][    C2] Call Trace:
[ 6956.513026][    C2]  <TASK>
[ 6956.513030][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6956.513037][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6956.513042][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6956.513045][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6956.513049][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6956.513054][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6956.513058][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6956.513064][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6956.513067][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6956.513071][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6956.513076][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6956.513082][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6956.513087][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6956.513094][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6956.513102][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6956.513104][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6956.513108][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6956.513111][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6956.513114][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6956.513119][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6956.513123][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6956.513131][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6956.513134][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6956.513138][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6956.513143][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6956.513147][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6956.513152][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6956.513156][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6956.513163][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6956.513169][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6956.513173][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6956.513175][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6956.513179][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6956.513183][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6956.513191][ C2] ksys_write (fs/read_write.c:738) 
[ 6956.513194][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6956.513197][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6956.513204][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6956.513208][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6956.513211][    C2] RIP: 0033:0x7f471c970337
[ 6956.513217][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6956.513218][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6956.513222][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6956.513224][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6956.513226][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6956.513228][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6956.513231][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 6984.512963][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 6984.512967][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 6984.512972][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 6984.512984][    C2] Tainted: [L]=SOFTLOCKUP
[ 6984.512985][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6984.512987][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 6984.512992][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 6984.512996][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 6984.512998][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 6984.513001][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 6984.513003][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 6984.513005][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 6984.513007][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 6984.513010][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 6984.513013][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6984.513017][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 6984.513019][    C2] PKRU: 55555554
[ 6984.513020][    C2] Call Trace:
[ 6984.513022][    C2]  <TASK>
[ 6984.513025][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 6984.513033][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 6984.513038][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6984.513041][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6984.513045][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6984.513050][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 6984.513055][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 6984.513061][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6984.513064][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 6984.513067][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 6984.513072][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 6984.513078][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 6984.513084][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 6984.513090][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 6984.513098][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 6984.513100][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 6984.513103][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 6984.513106][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 6984.513110][ C2] ? release_sock (net/core/sock.c:3747) 
[ 6984.513115][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 6984.513119][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6984.513127][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 6984.513131][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 6984.513135][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 6984.513140][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 6984.513145][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 6984.513149][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 6984.513153][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 6984.513161][ C2] ? ksys_write (fs/read_write.c:738) 
[ 6984.513166][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 6984.513170][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 6984.513172][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 6984.513176][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 6984.513180][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 6984.513187][ C2] ksys_write (fs/read_write.c:738) 
[ 6984.513191][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 6984.513194][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 6984.513200][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 6984.513204][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 6984.513207][    C2] RIP: 0033:0x7f471c970337
[ 6984.513213][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 6984.513215][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 6984.513219][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 6984.513221][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 6984.513223][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 6984.513225][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 6984.513227][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7008.700320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7008.700723][    C2] rcu: 2-....: (4780357 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2044012
| [ 7008.701231][    C2] rcu: (t=4784183 jiffies g=1286133 q=84895 ncpus=4)
| [ 7008.701474][    C2] Tainted: [L]=SOFTLOCKUP
[ 7008.701476][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7008.701479][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7008.701492][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7008.701496][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7008.701501][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7008.701504][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7008.701506][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7008.701508][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7008.701510][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7008.701512][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7008.701515][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7008.701519][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7008.701521][    C2] PKRU: 55555554
[ 7008.701523][    C2] Call Trace:
[ 7008.701524][    C2]  <TASK>
[ 7008.701527][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7008.701535][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7008.701541][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7008.701544][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7008.701549][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7008.701558][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7008.701561][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7008.701568][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7008.701571][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7008.701574][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7008.701580][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7008.701586][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7008.701591][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7008.701601][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7008.701609][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7008.701612][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7008.701615][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7008.701618][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7008.701621][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7008.701629][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7008.701632][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7008.701640][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7008.701644][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7008.701648][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7008.701655][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7008.701660][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7008.701666][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7008.701672][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7008.701678][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7008.701687][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7008.701690][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7008.701693][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7008.701697][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7008.701700][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7008.701708][ C2] ksys_write (fs/read_write.c:738) 
[ 7008.701711][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7008.701715][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7008.701724][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7008.701728][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7008.701732][    C2] RIP: 0033:0x7f471c970337
[ 7008.701743][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7008.701745][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7008.701748][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7008.701751][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7008.701753][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7008.701755][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7008.701757][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7009.693787][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7009.693963][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 7009.694126][    C2] NMI backtrace for cpu 2
| [ 7009.694138][    C2] Tainted: [L]=SOFTLOCKUP
[ 7009.694139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7009.694141][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7009.694151][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7009.694154][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7009.694158][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7009.694160][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7009.694162][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7009.694165][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7009.694167][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7009.694169][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7009.694172][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7009.694175][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7009.694177][    C2] PKRU: 55555554
[ 7009.694179][    C2] Call Trace:
[ 7009.694180][    C2]  <TASK>
[ 7009.694183][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7009.694190][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7009.694196][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7009.694199][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7009.694204][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7009.694212][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7009.694216][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7009.694223][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7009.694226][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7009.694229][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7009.694234][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7009.694240][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7009.694246][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7009.694253][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7009.694262][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7009.694265][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7009.694268][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7009.694271][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7009.694274][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7009.694281][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7009.694285][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7009.694292][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7009.694296][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7009.694300][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7009.694307][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7009.694311][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7009.694318][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7009.694324][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7009.694330][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7009.694338][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7009.694342][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7009.694345][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7009.694349][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7009.694353][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7009.694360][ C2] ksys_write (fs/read_write.c:738) 
[ 7009.694363][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7009.694366][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7009.694374][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7009.694378][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7009.694382][    C2] RIP: 0033:0x7f471c970337
[ 7009.694388][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7009.694390][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7009.694393][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7009.694395][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7009.694397][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7009.694399][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7009.694401][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7036.512969][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7036.512973][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7036.512978][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7036.512990][    C2] Tainted: [L]=SOFTLOCKUP
[ 7036.512991][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7036.512993][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7036.512998][ C2] Code: 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d 3f e5 fd <41> 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44
All code
========
   0:	01 00                	add    %eax,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	49 c1 ee 03          	shr    $0x3,%r14
   8:	41 83 e5 07          	and    $0x7,%r13d
   c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  13:	fc ff df 
  16:	49 01 c6             	add    %rax,%r14
  19:	41 83 c5 03          	add    $0x3,%r13d
  1d:	be 04 00 00 00       	mov    $0x4,%esi
  22:	48 89 ef             	mov    %rbp,%rdi
  25:	e8 5d 3f e5 fd       	call   0xfffffffffde53f87
  2a:*	41 0f b6 06          	movzbl (%r14),%eax		<-- trapping instruction
  2e:	41 38 c5             	cmp    %al,%r13b
  31:	7c 08                	jl     0x3b
  33:	84 c0                	test   %al,%al
  35:	0f 85 8d 07 00 00    	jne    0x7c8
  3b:	8b 45 00             	mov    0x0(%rbp),%eax
  3e:	89                   	.byte 0x89
  3f:	44                   	rex.R

Code starting with the faulting instruction
===========================================
   0:	41 0f b6 06          	movzbl (%r14),%eax
   4:	41 38 c5             	cmp    %al,%r13b
   7:	7c 08                	jl     0x11
   9:	84 c0                	test   %al,%al
   b:	0f 85 8d 07 00 00    	jne    0x79e
  11:	8b 45 00             	mov    0x0(%rbp),%eax
  14:	89                   	.byte 0x89
  15:	44                   	rex.R
[ 7036.513002][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000246
[ 7036.513005][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7036.513008][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7036.513010][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7036.513012][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7036.513015][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7036.513017][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7036.513020][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7036.513023][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7036.513026][    C2] PKRU: 55555554
[ 7036.513027][    C2] Call Trace:
[ 7036.513029][    C2]  <TASK>
[ 7036.513032][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7036.513040][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7036.513045][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7036.513048][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7036.513052][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7036.513057][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7036.513062][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7036.513069][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7036.513072][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7036.513075][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7036.513080][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7036.513086][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7036.513092][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7036.513099][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7036.513107][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7036.513109][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7036.513113][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7036.513115][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7036.513119][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7036.513125][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7036.513129][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7036.513137][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7036.513140][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7036.513145][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7036.513150][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7036.513154][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7036.513159][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7036.513164][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7036.513171][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7036.513178][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7036.513181][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7036.513184][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7036.513188][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7036.513192][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7036.513199][ C2] ksys_write (fs/read_write.c:738) 
[ 7036.513203][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7036.513206][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7036.513212][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7036.513216][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7036.513219][    C2] RIP: 0033:0x7f471c970337
[ 7036.513225][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7036.513227][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7036.513229][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7036.513232][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7036.513234][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7036.513236][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7036.513238][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7064.512963][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7064.512967][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7064.512972][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7064.512983][    C2] Tainted: [L]=SOFTLOCKUP
[ 7064.512984][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7064.512986][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7064.512991][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7064.512995][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7064.512998][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7064.513000][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7064.513002][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7064.513005][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7064.513007][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7064.513009][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7064.513012][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7064.513016][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7064.513018][    C2] PKRU: 55555554
[ 7064.513019][    C2] Call Trace:
[ 7064.513021][    C2]  <TASK>
[ 7064.513024][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7064.513032][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7064.513036][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7064.513039][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7064.513044][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7064.513048][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7064.513053][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7064.513059][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7064.513062][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7064.513065][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7064.513070][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7064.513076][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7064.513082][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7064.513089][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7064.513096][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7064.513099][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7064.513102][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7064.513105][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7064.513108][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7064.513115][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7064.513118][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7064.513126][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7064.513130][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7064.513134][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7064.513139][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7064.513143][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7064.513148][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7064.513153][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7064.513159][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7064.513165][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7064.513169][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7064.513172][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7064.513176][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7064.513179][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7064.513187][ C2] ksys_write (fs/read_write.c:738) 
[ 7064.513190][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7064.513193][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7064.513199][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7064.513203][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7064.513207][    C2] RIP: 0033:0x7f471c970337
[ 7064.513212][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7064.513214][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7064.513217][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7064.513219][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7064.513221][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7064.513223][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7064.513225][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7086.703318][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7086.703661][    C2] rcu: 2-....: (4858300 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2082988
| [ 7086.704158][    C2] rcu: (t=4862186 jiffies g=1286133 q=86240 ncpus=4)
| [ 7086.704396][    C2] Tainted: [L]=SOFTLOCKUP
[ 7086.704398][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7086.704400][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7086.704407][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7086.704410][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7086.704414][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7086.704416][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7086.704419][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7086.704421][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7086.704423][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7086.704425][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7086.704427][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7086.704431][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7086.704433][    C2] PKRU: 55555554
[ 7086.704435][    C2] Call Trace:
[ 7086.704436][    C2]  <TASK>
[ 7086.704438][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7086.704446][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7086.704450][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7086.704453][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7086.704457][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7086.704463][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7086.704466][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7086.704473][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7086.704476][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7086.704479][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7086.704484][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7086.704490][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7086.704496][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7086.704501][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7086.704509][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7086.704512][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7086.704515][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7086.704518][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7086.704521][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7086.704527][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7086.704530][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7086.704538][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7086.704541][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7086.704546][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7086.704550][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7086.704554][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7086.704559][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7086.704563][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7086.704569][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7086.704575][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7086.704578][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7086.704580][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7086.704584][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7086.704588][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7086.704595][ C2] ksys_write (fs/read_write.c:738) 
[ 7086.704599][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7086.704601][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7086.704607][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7086.704611][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7086.704614][    C2] RIP: 0033:0x7f471c970337
[ 7086.704619][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7086.704621][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7086.704624][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7086.704626][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7086.704629][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7086.704631][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7086.704633][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7107.997761][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7107.998028][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 7107.998190][    C2] NMI backtrace for cpu 2
| [ 7107.998201][    C2] Tainted: [L]=SOFTLOCKUP
[ 7107.998202][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7107.998204][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 7107.998211][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 7107.998214][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 7107.998217][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 7107.998220][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 7107.998222][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 7107.998224][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 7107.998226][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 7107.998228][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7107.998231][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7107.998234][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7107.998236][    C2] PKRU: 55555554
[ 7107.998238][    C2] Call Trace:
[ 7107.998240][    C2]  <IRQ>
[ 7107.998241][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 7107.998251][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 7107.998258][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 7107.998266][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 7107.998271][    C2]  </IRQ>
[ 7107.998272][    C2]  <TASK>
[ 7107.998274][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 7107.998279][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7107.998284][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7107.998287][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7107.998289][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7107.998291][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7107.998294][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7107.998296][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7107.998298][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7107.998302][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7107.998308][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7107.998316][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7107.998320][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7107.998323][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7107.998327][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7107.998332][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7107.998336][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7107.998342][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7107.998345][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7107.998348][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7107.998353][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7107.998359][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7107.998364][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7107.998370][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7107.998377][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7107.998380][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7107.998384][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7107.998386][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7107.998390][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7107.998395][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7107.998399][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7107.998406][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7107.998410][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7107.998414][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7107.998418][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7107.998422][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7107.998427][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7107.998431][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7107.998438][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7107.998443][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7107.998447][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7107.998450][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7107.998454][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7107.998457][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7107.998465][ C2] ksys_write (fs/read_write.c:738) 
[ 7107.998468][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7107.998471][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7107.998477][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7107.998480][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7107.998483][    C2] RIP: 0033:0x7f471c970337
[ 7107.998488][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7107.998489][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7107.998493][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7107.998495][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7107.998497][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7107.998499][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7107.998501][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7132.512961][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7132.512965][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7132.512970][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7132.512980][    C2] Tainted: [L]=SOFTLOCKUP
[ 7132.512982][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7132.512984][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 7132.512991][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 7132.512995][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 7132.512998][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7132.513000][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7132.513002][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7132.513005][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7132.513007][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7132.513009][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7132.513012][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7132.513016][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7132.513018][    C2] PKRU: 55555554
[ 7132.513019][    C2] Call Trace:
[ 7132.513022][    C2]  <TASK>
[ 7132.513023][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7132.513029][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7132.513037][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7132.513040][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7132.513043][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7132.513047][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7132.513052][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7132.513056][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7132.513063][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7132.513066][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7132.513069][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7132.513074][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7132.513080][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7132.513085][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7132.513090][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7132.513098][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7132.513100][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7132.513103][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7132.513106][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7132.513109][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7132.513114][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7132.513118][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7132.513126][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7132.513130][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7132.513134][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7132.513138][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7132.513143][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7132.513147][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7132.513151][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7132.513158][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7132.513163][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7132.513167][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7132.513169][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7132.513173][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7132.513177][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7132.513184][ C2] ksys_write (fs/read_write.c:738) 
[ 7132.513188][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7132.513191][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7132.513197][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7132.513200][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7132.513204][    C2] RIP: 0033:0x7f471c970337
[ 7132.513208][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7132.513210][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7132.513213][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7132.513215][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7132.513218][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7132.513220][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7132.513222][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7160.512960][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7160.512965][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7160.512969][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7160.512979][    C2] Tainted: [L]=SOFTLOCKUP
[ 7160.512981][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7160.512983][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7160.512987][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7160.512991][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7160.512994][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7160.512996][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7160.512999][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7160.513001][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7160.513003][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7160.513005][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7160.513008][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7160.513012][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7160.513014][    C2] PKRU: 55555554
[ 7160.513015][    C2] Call Trace:
[ 7160.513017][    C2]  <TASK>
[ 7160.513020][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7160.513028][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7160.513031][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7160.513034][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7160.513038][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7160.513043][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7160.513047][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7160.513053][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7160.513056][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7160.513059][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7160.513064][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7160.513070][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7160.513076][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7160.513081][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7160.513089][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7160.513092][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7160.513095][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7160.513098][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7160.513101][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7160.513106][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7160.513109][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7160.513117][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7160.513121][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7160.513125][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7160.513129][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7160.513133][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7160.513138][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7160.513142][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7160.513149][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7160.513154][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7160.513158][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7160.513161][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7160.513165][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7160.513169][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7160.513176][ C2] ksys_write (fs/read_write.c:738) 
[ 7160.513180][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7160.513182][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7160.513189][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7160.513193][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7160.513196][    C2] RIP: 0033:0x7f471c970337
[ 7160.513200][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7160.513202][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7160.513205][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7160.513207][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7160.513209][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7160.513212][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7160.513214][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7164.706319][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7164.706766][    C2] rcu: 2-....: (4936238 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2121967
| [ 7164.707138][    C2] rcu: (t=4940189 jiffies g=1286133 q=87672 ncpus=4)
| [ 7164.707373][    C2] Tainted: [L]=SOFTLOCKUP
[ 7164.707375][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7164.707377][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7164.707383][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7164.707386][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7164.707389][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7164.707391][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7164.707393][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7164.707395][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7164.707398][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7164.707400][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7164.707403][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7164.707406][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7164.707408][    C2] PKRU: 55555554
[ 7164.707410][    C2] Call Trace:
[ 7164.707411][    C2]  <TASK>
[ 7164.707413][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7164.707421][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7164.707424][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7164.707427][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7164.707431][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7164.707436][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7164.707440][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7164.707446][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7164.707448][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7164.707451][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7164.707457][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7164.707462][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7164.707467][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7164.707473][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7164.707480][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7164.707483][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7164.707487][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7164.707490][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7164.707493][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7164.707498][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7164.707502][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7164.707509][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7164.707513][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7164.707517][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7164.707521][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7164.707525][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7164.707530][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7164.707534][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7164.707541][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7164.707546][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7164.707550][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7164.707552][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7164.707556][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7164.707560][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7164.707568][ C2] ksys_write (fs/read_write.c:738) 
[ 7164.707571][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7164.707574][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7164.707579][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7164.707583][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7164.707586][    C2] RIP: 0033:0x7f471c970337
[ 7164.707591][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7164.707592][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7164.707595][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7164.707597][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7164.707599][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7164.707602][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7164.707604][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7192.512958][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7192.512962][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7192.512967][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7192.512977][    C2] Tainted: [L]=SOFTLOCKUP
[ 7192.512979][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7192.512981][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 7192.512987][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 7192.512990][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 7192.512993][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7192.512996][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7192.512998][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7192.513000][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7192.513003][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7192.513005][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7192.513007][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7192.513011][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7192.513013][    C2] PKRU: 55555554
[ 7192.513014][    C2] Call Trace:
[ 7192.513016][    C2]  <TASK>
[ 7192.513018][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7192.513023][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7192.513031][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7192.513034][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7192.513037][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7192.513041][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7192.513045][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7192.513049][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7192.513056][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7192.513059][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7192.513062][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7192.513067][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7192.513072][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7192.513078][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7192.513084][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7192.513091][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7192.513094][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7192.513097][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7192.513099][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7192.513103][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7192.513108][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7192.513111][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7192.513119][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7192.513123][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7192.513126][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7192.513131][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7192.513135][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7192.513139][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7192.513143][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7192.513150][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7192.513155][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7192.513158][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7192.513161][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7192.513165][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7192.513169][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7192.513176][ C2] ksys_write (fs/read_write.c:738) 
[ 7192.513180][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7192.513183][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7192.513188][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7192.513192][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7192.513195][    C2] RIP: 0033:0x7f471c970337
[ 7192.513200][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7192.513202][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7192.513204][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7192.513206][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7192.513209][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7192.513211][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7192.513213][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7206.301697][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7206.301964][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 7206.302130][    C2] NMI backtrace for cpu 2
| [ 7206.302140][    C2] Tainted: [L]=SOFTLOCKUP
[ 7206.302141][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7206.302143][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7206.302149][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7206.302153][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7206.302156][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7206.302158][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7206.302160][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7206.302162][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7206.302165][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7206.302167][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7206.302169][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7206.302173][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7206.302175][    C2] PKRU: 55555554
[ 7206.302176][    C2] Call Trace:
[ 7206.302178][    C2]  <TASK>
[ 7206.302181][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7206.302188][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7206.302192][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7206.302195][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7206.302198][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7206.302203][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7206.302207][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7206.302213][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7206.302216][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7206.302219][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7206.302224][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7206.302230][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7206.302235][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7206.302240][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7206.302247][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7206.302250][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7206.302254][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7206.302256][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7206.302259][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7206.302264][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7206.302268][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7206.302275][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7206.302279][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7206.302283][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7206.302287][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7206.302291][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7206.302295][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7206.302299][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7206.302306][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7206.302311][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7206.302316][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7206.302319][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7206.302323][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7206.302327][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7206.302334][ C2] ksys_write (fs/read_write.c:738) 
[ 7206.302338][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7206.302341][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7206.302346][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7206.302350][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7206.302353][    C2] RIP: 0033:0x7f471c970337
[ 7206.302358][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7206.302360][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7206.302363][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7206.302365][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7206.302367][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7206.302370][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7206.302372][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7232.512959][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7232.512963][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7232.512967][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7232.512978][    C2] Tainted: [L]=SOFTLOCKUP
[ 7232.512979][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7232.512981][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7232.512986][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7232.512990][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7232.512992][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7232.512995][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7232.512997][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7232.512999][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7232.513001][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7232.513004][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7232.513006][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7232.513010][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7232.513012][    C2] PKRU: 55555554
[ 7232.513013][    C2] Call Trace:
[ 7232.513015][    C2]  <TASK>
[ 7232.513018][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7232.513026][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7232.513030][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7232.513033][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7232.513036][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7232.513041][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7232.513045][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7232.513052][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7232.513055][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7232.513058][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7232.513062][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7232.513068][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7232.513074][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7232.513079][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7232.513087][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7232.513089][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7232.513093][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7232.513096][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7232.513099][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7232.513104][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7232.513108][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7232.513116][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7232.513119][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7232.513124][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7232.513128][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7232.513133][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7232.513137][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7232.513141][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7232.513147][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7232.513153][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7232.513156][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7232.513159][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7232.513163][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7232.513167][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7232.513174][ C2] ksys_write (fs/read_write.c:738) 
[ 7232.513178][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7232.513181][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7232.513187][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7232.513191][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7232.513194][    C2] RIP: 0033:0x7f471c970337
[ 7232.513199][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7232.513200][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7232.513203][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7232.513206][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7232.513208][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7232.513210][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7232.513212][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7242.709319][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7242.709773][    C2] rcu: 2-....: (5014180 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2160946
| [ 7242.710151][    C2] rcu: (t=5018192 jiffies g=1286133 q=89020 ncpus=4)
| [ 7242.710387][    C2] Tainted: [L]=SOFTLOCKUP
[ 7242.710388][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7242.710390][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7242.710396][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7242.710400][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7242.710403][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7242.710405][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7242.710408][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7242.710410][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7242.710411][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7242.710414][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7242.710417][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7242.710420][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7242.710422][    C2] PKRU: 55555554
[ 7242.710424][    C2] Call Trace:
[ 7242.710425][    C2]  <TASK>
[ 7242.710427][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7242.710435][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7242.710438][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7242.710441][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7242.710445][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7242.710450][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7242.710454][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7242.710460][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7242.710463][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7242.710465][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7242.710471][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7242.710477][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7242.710482][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7242.710488][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7242.710495][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7242.710497][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7242.710501][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7242.710504][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7242.710507][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7242.710512][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7242.710516][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7242.710523][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7242.710526][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7242.710531][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7242.710535][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7242.710539][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7242.710542][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7242.710546][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7242.710553][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7242.710558][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7242.710562][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7242.710564][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7242.710569][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7242.710572][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7242.710580][ C2] ksys_write (fs/read_write.c:738) 
[ 7242.710583][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7242.710586][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7242.710592][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7242.710595][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7242.710598][    C2] RIP: 0033:0x7f471c970337
[ 7242.710603][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7242.710605][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7242.710608][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7242.710610][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7242.710612][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7242.710614][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7242.710616][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7268.512959][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7268.512963][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7268.512967][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7268.512978][    C2] Tainted: [L]=SOFTLOCKUP
[ 7268.512979][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7268.512981][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7268.512986][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7268.512989][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7268.512992][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7268.512994][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7268.512997][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7268.512999][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7268.513001][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7268.513003][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7268.513006][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7268.513010][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7268.513012][    C2] PKRU: 55555554
[ 7268.513013][    C2] Call Trace:
[ 7268.513015][    C2]  <TASK>
[ 7268.513018][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7268.513025][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7268.513029][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7268.513032][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7268.513036][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7268.513040][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7268.513044][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7268.513051][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7268.513054][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7268.513057][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7268.513062][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7268.513067][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7268.513073][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7268.513078][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7268.513085][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7268.513088][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7268.513092][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7268.513095][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7268.513097][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7268.513103][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7268.513106][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7268.513113][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7268.513117][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7268.513121][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7268.513125][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7268.513129][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7268.513133][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7268.513137][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7268.513144][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7268.513150][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7268.513153][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7268.513156][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7268.513160][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7268.513164][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7268.513171][ C2] ksys_write (fs/read_write.c:738) 
[ 7268.513175][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7268.513178][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7268.513183][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7268.513187][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7268.513191][    C2] RIP: 0033:0x7f471c970337
[ 7268.513195][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7268.513197][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7268.513200][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7268.513203][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7268.513205][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7268.513207][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7268.513209][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7296.512959][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7296.512963][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7296.512967][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7296.512978][    C2] Tainted: [L]=SOFTLOCKUP
[ 7296.512980][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7296.512981][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7296.512986][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7296.512989][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7296.512992][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7296.512994][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7296.512997][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7296.512999][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7296.513001][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7296.513003][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7296.513005][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7296.513009][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7296.513011][    C2] PKRU: 55555554
[ 7296.513012][    C2] Call Trace:
[ 7296.513014][    C2]  <TASK>
[ 7296.513017][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7296.513024][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7296.513028][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7296.513031][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7296.513035][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7296.513040][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7296.513044][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7296.513050][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7296.513053][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7296.513056][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7296.513061][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7296.513067][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7296.513073][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7296.513078][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7296.513085][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7296.513088][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7296.513092][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7296.513094][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7296.513097][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7296.513102][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7296.513106][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7296.513113][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7296.513117][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7296.513121][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7296.513125][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7296.513130][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7296.513134][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7296.513138][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7296.513145][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7296.513150][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7296.513154][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7296.513157][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7296.513161][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7296.513165][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7296.513172][ C2] ksys_write (fs/read_write.c:738) 
[ 7296.513176][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7296.513179][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7296.513185][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7296.513188][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7296.513192][    C2] RIP: 0033:0x7f471c970337
[ 7296.513197][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7296.513199][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7296.513201][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7296.513204][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7296.513206][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7296.513208][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7296.513210][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7304.605758][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7304.605933][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 7304.606085][    C2] NMI backtrace for cpu 2
| [ 7304.606096][    C2] Tainted: [L]=SOFTLOCKUP
[ 7304.606097][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7304.606099][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 7304.606106][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 7304.606109][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 7304.606112][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 7304.606114][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 7304.606117][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 7304.606119][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 7304.606121][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 7304.606123][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7304.606126][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7304.606129][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7304.606131][    C2] PKRU: 55555554
[ 7304.606133][    C2] Call Trace:
[ 7304.606135][    C2]  <IRQ>
[ 7304.606137][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 7304.606146][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 7304.606153][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 7304.606161][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 7304.606166][    C2]  </IRQ>
[ 7304.606167][    C2]  <TASK>
[ 7304.606169][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 7304.606173][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7304.606177][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 7304.606180][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7304.606183][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7304.606185][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7304.606187][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7304.606189][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7304.606192][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7304.606196][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7304.606202][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7304.606209][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7304.606212][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7304.606215][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7304.606218][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7304.606223][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7304.606227][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7304.606233][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7304.606236][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7304.606239][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7304.606244][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7304.606249][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7304.606255][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7304.606260][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7304.606267][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7304.606270][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7304.606273][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7304.606276][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7304.606279][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7304.606284][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7304.606287][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7304.606295][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7304.606299][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7304.606303][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7304.606307][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7304.606311][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7304.606315][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7304.606320][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7304.606327][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7304.606332][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7304.606336][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7304.606339][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7304.606343][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7304.606346][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7304.606354][ C2] ksys_write (fs/read_write.c:738) 
[ 7304.606357][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7304.606360][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7304.606365][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7304.606369][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7304.606372][    C2] RIP: 0033:0x7f471c970337
[ 7304.606377][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7304.606378][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7304.606382][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7304.606384][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7304.606386][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7304.606388][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7304.606390][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7320.712318][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7320.712777][    C2] rcu: 2-....: (5092118 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2199925
| [ 7320.713158][    C2] rcu: (t=5096195 jiffies g=1286133 q=90446 ncpus=4)
| [ 7320.713395][    C2] Tainted: [L]=SOFTLOCKUP
[ 7320.713396][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7320.713398][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7320.713403][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7320.713407][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7320.713410][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7320.713412][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7320.713414][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7320.713416][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7320.713418][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7320.713420][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7320.713423][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7320.713427][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7320.713429][    C2] PKRU: 55555554
[ 7320.713430][    C2] Call Trace:
[ 7320.713431][    C2]  <TASK>
[ 7320.713433][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7320.713441][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7320.713445][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7320.713447][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7320.713451][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7320.713456][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7320.713460][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7320.713466][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7320.713468][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7320.713471][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7320.713476][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7320.713482][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7320.713487][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7320.713492][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7320.713499][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7320.713502][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7320.713505][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7320.713508][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7320.713512][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7320.713517][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7320.713520][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7320.713528][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7320.713532][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7320.713536][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7320.713541][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7320.713545][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7320.713549][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7320.713553][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7320.713559][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7320.713565][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7320.713568][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7320.713570][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7320.713574][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7320.713578][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7320.713585][ C2] ksys_write (fs/read_write.c:738) 
[ 7320.713589][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7320.713592][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7320.713597][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7320.713601][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7320.713604][    C2] RIP: 0033:0x7f471c970337
[ 7320.713609][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7320.713610][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7320.713614][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7320.713616][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7320.713618][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7320.713620][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7320.713622][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7348.512957][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7348.512960][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7348.512965][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7348.512975][    C2] Tainted: [L]=SOFTLOCKUP
[ 7348.512977][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7348.512979][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 7348.512984][ C2] Code: ff fe 48 39 c7 77 23 44 89 c2 e8 b7 e7 ff ff 83 f0 01 5b 5d 41 5c e9 0b fb 1a 02 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd <4c> 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48
All code
========
   0:	ff                   	(bad)
   1:	fe 48 39             	decb   0x39(%rax)
   4:	c7                   	(bad)
   5:	77 23                	ja     0x2a
   7:	44 89 c2             	mov    %r8d,%edx
   a:	e8 b7 e7 ff ff       	call   0xffffffffffffe7c6
   f:	83 f0 01             	xor    $0x1,%eax
  12:	5b                   	pop    %rbx
  13:	5d                   	pop    %rbp
  14:	41 5c                	pop    %r12
  16:	e9 0b fb 1a 02       	jmp    0x21afb26
  1b:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  22:	7f ff ff 
  25:	48 39 c7             	cmp    %rax,%rdi
  28:	76 dd                	jbe    0x7
  2a:*	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10		<-- trapping instruction
  2f:	48 89 fd             	mov    %rdi,%rbp
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4d 89 d1             	mov    %r10,%r9
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   5:	48 89 fd             	mov    %rdi,%rbp
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4d 89 d1             	mov    %r10,%r9
  15:	48                   	rex.W
[ 7348.512988][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000212
[ 7348.512990][    C2] RAX: ffff7fffffffffff RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7348.512993][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7348.512995][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7348.512997][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7348.512999][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7348.513001][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7348.513004][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7348.513008][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7348.513010][    C2] PKRU: 55555554
[ 7348.513011][    C2] Call Trace:
[ 7348.513013][    C2]  <TASK>
[ 7348.513015][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7348.513020][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7348.513027][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7348.513031][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7348.513034][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7348.513037][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7348.513042][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7348.513046][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7348.513053][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7348.513055][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7348.513058][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7348.513063][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7348.513069][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7348.513074][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7348.513079][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7348.513086][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7348.513089][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7348.513093][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7348.513095][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7348.513098][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7348.513103][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7348.513107][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7348.513114][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7348.513118][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7348.513122][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7348.513127][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7348.513131][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7348.513135][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7348.513139][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7348.513146][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7348.513152][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7348.513155][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7348.513158][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7348.513162][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7348.513166][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7348.513174][ C2] ksys_write (fs/read_write.c:738) 
[ 7348.513177][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7348.513180][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7348.513186][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7348.513190][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7348.513193][    C2] RIP: 0033:0x7f471c970337
[ 7348.513198][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7348.513199][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7348.513203][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7348.513205][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7348.513207][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7348.513210][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7348.513212][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7376.512957][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7376.512961][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7376.512965][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7376.512976][    C2] Tainted: [L]=SOFTLOCKUP
[ 7376.512978][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7376.512979][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:31) 
[ 7376.512984][ C2] Code: 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
   0:	41 5c                	pop    %r12
   2:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fb2
   7:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
  2a:*	89 f6                	mov    %esi,%esi		<-- trapping instruction
  2c:	31 d2                	xor    %edx,%edx
  2e:	e9 4f f0 ff ff       	jmp    0xfffffffffffff082
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 f6                	mov    %esi,%esi
   2:	31 d2                	xor    %edx,%edx
   4:	e9 4f f0 ff ff       	jmp    0xfffffffffffff058
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 7376.512987][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 7376.512990][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7376.512993][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7376.512995][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7376.512997][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7376.512999][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7376.513001][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7376.513003][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7376.513007][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7376.513009][    C2] PKRU: 55555554
[ 7376.513010][    C2] Call Trace:
[ 7376.513012][    C2]  <TASK>
[ 7376.513014][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7376.513019][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7376.513026][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7376.513030][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7376.513032][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7376.513036][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7376.513040][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7376.513044][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7376.513051][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7376.513054][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7376.513057][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7376.513062][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7376.513068][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7376.513073][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7376.513078][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7376.513086][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7376.513088][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7376.513092][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7376.513094][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7376.513097][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7376.513102][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7376.513106][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7376.513113][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7376.513117][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7376.513121][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7376.513125][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7376.513130][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7376.513133][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7376.513137][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7376.513144][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7376.513149][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7376.513153][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7376.513156][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7376.513160][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7376.513164][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7376.513171][ C2] ksys_write (fs/read_write.c:738) 
[ 7376.513175][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7376.513177][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7376.513183][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7376.513186][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7376.513190][    C2] RIP: 0033:0x7f471c970337
[ 7376.513195][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7376.513196][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7376.513199][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7376.513202][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7376.513204][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7376.513206][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7376.513208][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7398.715319][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7398.715681][    C2] rcu: 2-....: (5170074 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2238911
| [ 7398.716055][    C2] rcu: (t=5174198 jiffies g=1286133 q=91475 ncpus=4)
| [ 7398.716414][    C2] Tainted: [L]=SOFTLOCKUP
[ 7398.716416][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7398.716418][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7398.716425][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7398.716429][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7398.716432][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7398.716434][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7398.716437][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7398.716439][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7398.716441][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7398.716443][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7398.716445][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7398.716449][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7398.716451][    C2] PKRU: 55555554
[ 7398.716452][    C2] Call Trace:
[ 7398.716454][    C2]  <TASK>
[ 7398.716456][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7398.716464][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7398.716467][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7398.716470][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7398.716474][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7398.716479][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7398.716483][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7398.716489][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7398.716492][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7398.716495][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7398.716499][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7398.716505][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7398.716511][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7398.716517][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7398.716524][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7398.716527][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7398.716530][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7398.716533][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7398.716536][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7398.716541][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7398.716545][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7398.716552][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7398.716556][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7398.716560][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7398.716565][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7398.716569][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7398.716573][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7398.716577][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7398.716584][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7398.716589][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7398.716592][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7398.716595][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7398.716599][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7398.716603][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7398.716611][ C2] ksys_write (fs/read_write.c:738) 
[ 7398.716614][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7398.716617][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7398.716623][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7398.716627][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7398.716631][    C2] RIP: 0033:0x7f471c970337
[ 7398.716636][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7398.716638][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7398.716641][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7398.716643][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7398.716645][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7398.716647][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7398.716650][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7402.909835][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7402.910016][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 7402.910181][    C2] NMI backtrace for cpu 2
| [ 7402.910192][    C2] Tainted: [L]=SOFTLOCKUP
[ 7402.910194][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7402.910195][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 7402.910202][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 7402.910205][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 7402.910209][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 7402.910211][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 7402.910213][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 7402.910215][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 7402.910218][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 7402.910219][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7402.910222][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7402.910225][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7402.910228][    C2] PKRU: 55555554
[ 7402.910229][    C2] Call Trace:
[ 7402.910231][    C2]  <IRQ>
[ 7402.910233][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 7402.910242][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 7402.910249][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 7402.910256][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 7402.910261][    C2]  </IRQ>
[ 7402.910262][    C2]  <TASK>
[ 7402.910264][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 7402.910268][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7402.910273][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7402.910275][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7402.910278][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7402.910280][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7402.910282][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7402.910284][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7402.910287][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7402.910291][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7402.910297][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7402.910304][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7402.910308][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7402.910310][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7402.910314][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7402.910321][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7402.910324][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7402.910331][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7402.910333][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7402.910336][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7402.910341][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7402.910347][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7402.910352][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7402.910357][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7402.910364][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7402.910367][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7402.910371][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7402.910374][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7402.910377][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7402.910382][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7402.910386][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7402.910393][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7402.910397][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7402.910401][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7402.910405][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7402.910409][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7402.910413][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7402.910417][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7402.910424][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7402.910430][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7402.910433][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7402.910436][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7402.910440][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7402.910444][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7402.910451][ C2] ksys_write (fs/read_write.c:738) 
[ 7402.910455][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7402.910458][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7402.910463][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7402.910467][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7402.910470][    C2] RIP: 0033:0x7f471c970337
[ 7402.910475][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7402.910476][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7402.910479][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7402.910482][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7402.910484][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7402.910486][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7402.910488][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7428.512958][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7428.512962][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7428.512966][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7428.512977][    C2] Tainted: [L]=SOFTLOCKUP
[ 7428.512978][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7428.512980][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7428.512984][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7428.512988][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7428.512990][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7428.512993][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7428.512995][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7428.512998][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7428.512999][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7428.513002][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7428.513004][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7428.513008][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7428.513010][    C2] PKRU: 55555554
[ 7428.513012][    C2] Call Trace:
[ 7428.513014][    C2]  <TASK>
[ 7428.513017][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7428.513024][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7428.513028][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7428.513031][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7428.513034][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7428.513039][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7428.513043][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7428.513050][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7428.513052][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7428.513055][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7428.513060][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7428.513066][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7428.513072][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7428.513077][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7428.513084][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7428.513087][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7428.513091][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7428.513094][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7428.513097][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7428.513102][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7428.513106][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7428.513114][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7428.513117][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7428.513121][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7428.513126][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7428.513131][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7428.513135][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7428.513139][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7428.513146][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7428.513151][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7428.513155][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7428.513158][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7428.513161][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7428.513165][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7428.513172][ C2] ksys_write (fs/read_write.c:738) 
[ 7428.513176][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7428.513178][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7428.513184][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7428.513188][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7428.513192][    C2] RIP: 0033:0x7f471c970337
[ 7428.513196][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7428.513198][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7428.513201][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7428.513203][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7428.513206][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7428.513208][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7428.513210][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7456.512957][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7456.512961][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7456.512966][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7456.512976][    C2] Tainted: [L]=SOFTLOCKUP
[ 7456.512978][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7456.512980][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 7456.512985][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 7456.512988][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 7456.512991][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7456.512993][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7456.512996][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7456.512998][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7456.513000][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7456.513002][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7456.513005][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7456.513009][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7456.513011][    C2] PKRU: 55555554
[ 7456.513012][    C2] Call Trace:
[ 7456.513014][    C2]  <TASK>
[ 7456.513015][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7456.513021][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7456.513028][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7456.513032][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7456.513035][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7456.513038][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7456.513043][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7456.513047][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7456.513053][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7456.513056][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7456.513059][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7456.513064][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7456.513070][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7456.513075][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7456.513081][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7456.513088][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7456.513091][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7456.513094][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7456.513097][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7456.513100][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7456.513105][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7456.513109][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7456.513116][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7456.513120][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7456.513124][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7456.513128][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7456.513132][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7456.513136][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7456.513140][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7456.513147][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7456.513152][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7456.513156][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7456.513158][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7456.513163][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7456.513166][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7456.513174][ C2] ksys_write (fs/read_write.c:738) 
[ 7456.513177][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7456.513180][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7456.513186][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7456.513190][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7456.513193][    C2] RIP: 0033:0x7f471c970337
[ 7456.513197][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7456.513199][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7456.513202][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7456.513205][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7456.513207][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7456.513209][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7456.513211][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7476.718318][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7476.718651][    C2] rcu: 2-....: (5248012 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2277887
| [ 7476.719144][    C2] rcu: (t=5252201 jiffies g=1286133 q=92904 ncpus=4)
| [ 7476.719383][    C2] Tainted: [L]=SOFTLOCKUP
[ 7476.719385][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7476.719387][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7476.719392][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 7476.719396][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7476.719399][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7476.719402][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7476.719404][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7476.719406][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7476.719408][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7476.719410][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7476.719413][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7476.719416][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7476.719418][    C2] PKRU: 55555554
[ 7476.719420][    C2] Call Trace:
[ 7476.719421][    C2]  <TASK>
[ 7476.719423][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7476.719431][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7476.719435][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7476.719437][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7476.719441][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7476.719446][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7476.719450][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7476.719456][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7476.719459][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7476.719462][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7476.719467][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7476.719472][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7476.719477][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7476.719482][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7476.719489][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7476.719492][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7476.719496][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7476.719499][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7476.719502][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7476.719507][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7476.719510][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7476.719517][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7476.719521][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7476.719525][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7476.719529][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7476.719533][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7476.719537][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7476.719541][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7476.719547][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7476.719553][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7476.719556][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7476.719559][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7476.719563][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7476.719567][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7476.719574][ C2] ksys_write (fs/read_write.c:738) 
[ 7476.719578][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7476.719580][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7476.719586][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7476.719590][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7476.719593][    C2] RIP: 0033:0x7f471c970337
[ 7476.719597][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7476.719599][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7476.719602][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7476.719604][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7476.719606][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7476.719608][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7476.719610][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7501.213857][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7501.214040][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 7501.214195][    C2] NMI backtrace for cpu 2
| [ 7501.214206][    C2] Tainted: [L]=SOFTLOCKUP
[ 7501.214207][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7501.214209][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 7501.214216][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 7501.214220][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 7501.214223][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 7501.214225][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 7501.214228][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 7501.214230][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 7501.214232][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 7501.214234][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7501.214237][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7501.214240][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7501.214243][    C2] PKRU: 55555554
[ 7501.214244][    C2] Call Trace:
[ 7501.214246][    C2]  <IRQ>
[ 7501.214248][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 7501.214257][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 7501.214265][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 7501.214272][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 7501.214276][    C2]  </IRQ>
[ 7501.214278][    C2]  <TASK>
[ 7501.214280][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 7501.214284][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7501.214288][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7501.214291][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7501.214294][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7501.214296][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7501.214298][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7501.214300][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7501.214302][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7501.214307][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7501.214313][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7501.214321][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7501.214325][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7501.214328][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7501.214332][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7501.214337][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7501.214341][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7501.214348][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7501.214350][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7501.214354][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7501.214359][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7501.214364][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7501.214370][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7501.214375][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7501.214382][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7501.214385][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7501.214388][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7501.214391][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7501.214394][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7501.214399][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7501.214403][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7501.214411][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7501.214414][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7501.214419][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7501.214423][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7501.214427][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7501.214432][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7501.214436][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7501.214443][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7501.214449][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7501.214452][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7501.214455][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7501.214459][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7501.214463][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7501.214470][ C2] ksys_write (fs/read_write.c:738) 
[ 7501.214473][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7501.214475][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7501.214481][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7501.214485][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7501.214488][    C2] RIP: 0033:0x7f471c970337
[ 7501.214492][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7501.214494][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7501.214497][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7501.214500][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7501.214502][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7501.214504][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7501.214506][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7528.512960][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7528.512965][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7528.512969][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7528.512980][    C2] Tainted: [L]=SOFTLOCKUP
[ 7528.512982][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7528.512984][ C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 7528.512989][ C2] Code: ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 <49> 01 c1 48 89 e8 49 8d 59 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	7f ff                	jg     0x3
   4:	ff 48 39             	decl   0x39(%rax)
   7:	c7                   	(bad)
   8:	76 dd                	jbe    0xffffffffffffffe7
   a:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df 
  1c:	4d 89 d1             	mov    %r10,%r9
  1f:	48 c1 ed 03          	shr    $0x3,%rbp
  23:	49 c1 e9 03          	shr    $0x3,%r9
  27:	48 01 c5             	add    %rax,%rbp
  2a:*	49 01 c1             	add    %rax,%r9		<-- trapping instruction
  2d:	48 89 e8             	mov    %rbp,%rax
  30:	49 8d 59 01          	lea    0x1(%r9),%rbx
  34:	48 89 da             	mov    %rbx,%rdx
  37:	48 29 ea             	sub    %rbp,%rdx
  3a:	48 83 fa 10          	cmp    $0x10,%rdx
  3e:	0f                   	.byte 0xf
  3f:	8e                   	.byte 0x8e

Code starting with the faulting instruction
===========================================
   0:	49 01 c1             	add    %rax,%r9
   3:	48 89 e8             	mov    %rbp,%rax
   6:	49 8d 59 01          	lea    0x1(%r9),%rbx
   a:	48 89 da             	mov    %rbx,%rdx
   d:	48 29 ea             	sub    %rbp,%rdx
  10:	48 83 fa 10          	cmp    $0x10,%rdx
  14:	0f                   	.byte 0xf
  15:	8e                   	.byte 0x8e
[ 7528.512992][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000286
[ 7528.512995][    C2] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7528.512997][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7528.512999][    C2] RBP: ffffed100170bd66 R08: 0000000000000000 R09: 1ffff1100170bd66
[ 7528.513002][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7528.513004][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7528.513006][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7528.513009][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7528.513012][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7528.513015][    C2] PKRU: 55555554
[ 7528.513016][    C2] Call Trace:
[ 7528.513018][    C2]  <TASK>
[ 7528.513021][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7528.513027][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7528.513034][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7528.513038][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7528.513041][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7528.513045][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7528.513050][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7528.513054][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7528.513060][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7528.513063][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7528.513066][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7528.513071][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7528.513077][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7528.513082][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7528.513087][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7528.513094][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7528.513097][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7528.513100][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7528.513103][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7528.513106][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7528.513111][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7528.513115][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7528.513122][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7528.513126][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7528.513130][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7528.513135][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7528.513139][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7528.513144][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7528.513148][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7528.513155][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7528.513160][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7528.513163][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7528.513166][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7528.513170][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7528.513174][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7528.513181][ C2] ksys_write (fs/read_write.c:738) 
[ 7528.513184][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7528.513187][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7528.513194][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7528.513198][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7528.513201][    C2] RIP: 0033:0x7f471c970337
[ 7528.513206][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7528.513208][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7528.513211][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7528.513213][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7528.513216][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7528.513218][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7528.513220][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7554.721320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7554.721713][    C2] rcu: 2-....: (5325966 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2316871
| [ 7554.722220][    C2] rcu: (t=5330204 jiffies g=1286133 q=93981 ncpus=4)
| [ 7554.722461][    C2] Tainted: [L]=SOFTLOCKUP
[ 7554.722463][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7554.722465][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7554.722477][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7554.722480][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7554.722484][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7554.722487][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7554.722489][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7554.722491][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7554.722493][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7554.722496][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7554.722498][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7554.722502][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7554.722504][    C2] PKRU: 55555554
[ 7554.722506][    C2] Call Trace:
[ 7554.722507][    C2]  <TASK>
[ 7554.722510][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7554.722518][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7554.722523][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7554.722525][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7554.722530][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7554.722538][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7554.722542][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7554.722548][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7554.722551][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7554.722554][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7554.722559][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7554.722565][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7554.722570][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7554.722579][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7554.722587][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7554.722590][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7554.722593][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7554.722596][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7554.722599][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7554.722606][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7554.722610][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7554.722617][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7554.722621][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7554.722625][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7554.722632][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7554.722636][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7554.722642][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7554.722648][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7554.722654][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7554.722662][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7554.722665][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7554.722668][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7554.722672][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7554.722675][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7554.722683][ C2] ksys_write (fs/read_write.c:738) 
[ 7554.722686][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7554.722689][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7554.722697][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7554.722702][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7554.722706][    C2] RIP: 0033:0x7f471c970337
[ 7554.722715][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7554.722717][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7554.722720][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7554.722722][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7554.722725][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7554.722727][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7554.722729][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7580.512980][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7580.512985][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7580.512992][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7580.513006][    C2] Tainted: [L]=SOFTLOCKUP
[ 7580.513008][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7580.513010][ C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 7580.513019][ C2] Code: ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 <49> 01 c1 48 89 e8 49 8d 59 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	7f ff                	jg     0x3
   4:	ff 48 39             	decl   0x39(%rax)
   7:	c7                   	(bad)
   8:	76 dd                	jbe    0xffffffffffffffe7
   a:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df 
  1c:	4d 89 d1             	mov    %r10,%r9
  1f:	48 c1 ed 03          	shr    $0x3,%rbp
  23:	49 c1 e9 03          	shr    $0x3,%r9
  27:	48 01 c5             	add    %rax,%rbp
  2a:*	49 01 c1             	add    %rax,%r9		<-- trapping instruction
  2d:	48 89 e8             	mov    %rbp,%rax
  30:	49 8d 59 01          	lea    0x1(%r9),%rbx
  34:	48 89 da             	mov    %rbx,%rdx
  37:	48 29 ea             	sub    %rbp,%rdx
  3a:	48 83 fa 10          	cmp    $0x10,%rdx
  3e:	0f                   	.byte 0xf
  3f:	8e                   	.byte 0x8e

Code starting with the faulting instruction
===========================================
   0:	49 01 c1             	add    %rax,%r9
   3:	48 89 e8             	mov    %rbp,%rax
   6:	49 8d 59 01          	lea    0x1(%r9),%rbx
   a:	48 89 da             	mov    %rbx,%rdx
   d:	48 29 ea             	sub    %rbp,%rdx
  10:	48 83 fa 10          	cmp    $0x10,%rdx
  14:	0f                   	.byte 0xf
  15:	8e                   	.byte 0x8e
[ 7580.513023][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000286
[ 7580.513026][    C2] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7580.513029][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7580.513032][    C2] RBP: ffffed100170bd66 R08: 0000000000000000 R09: 1ffff1100170bd66
[ 7580.513034][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7580.513036][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7580.513039][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7580.513041][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7580.513046][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7580.513048][    C2] PKRU: 55555554
[ 7580.513050][    C2] Call Trace:
[ 7580.513053][    C2]  <TASK>
[ 7580.513058][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7580.513064][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7580.513072][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7580.513077][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7580.513080][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7580.513085][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7580.513090][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7580.513095][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7580.513102][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7580.513105][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7580.513108][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7580.513112][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7580.513119][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7580.513124][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7580.513133][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7580.513140][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7580.513143][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7580.513146][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7580.513149][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7580.513152][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7580.513160][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7580.513164][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7580.513172][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7580.513176][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7580.513180][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7580.513186][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7580.513191][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7580.513198][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7580.513204][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7580.513211][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7580.513218][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7580.513222][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7580.513225][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7580.513229][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7580.513232][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7580.513240][ C2] ksys_write (fs/read_write.c:738) 
[ 7580.513243][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7580.513246][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7580.513254][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7580.513259][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7580.513264][    C2] RIP: 0033:0x7f471c970337
[ 7580.513274][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7580.513276][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7580.513279][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7580.513281][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7580.513284][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7580.513286][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7580.513288][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7599.517839][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7599.518026][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 7599.518181][    C2] NMI backtrace for cpu 2
| [ 7599.518192][    C2] Tainted: [L]=SOFTLOCKUP
[ 7599.518194][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7599.518196][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7599.518204][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 7599.518207][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7599.518211][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7599.518213][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7599.518215][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7599.518217][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7599.518220][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7599.518222][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7599.518225][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7599.518228][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7599.518230][    C2] PKRU: 55555554
[ 7599.518231][    C2] Call Trace:
[ 7599.518233][    C2]  <TASK>
[ 7599.518237][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7599.518244][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7599.518248][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7599.518251][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7599.518256][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7599.518262][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7599.518266][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7599.518273][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7599.518275][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7599.518278][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7599.518284][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7599.518289][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7599.518294][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7599.518301][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7599.518308][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7599.518310][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7599.518314][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7599.518318][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7599.518321][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7599.518326][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7599.518330][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7599.518337][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7599.518341][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7599.518346][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7599.518350][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7599.518354][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7599.518359][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7599.518363][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7599.518370][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7599.518376][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7599.518379][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7599.518382][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7599.518386][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7599.518390][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7599.518397][ C2] ksys_write (fs/read_write.c:738) 
[ 7599.518400][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7599.518403][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7599.518409][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7599.518412][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7599.518416][    C2] RIP: 0033:0x7f471c970337
[ 7599.518420][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7599.518422][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7599.518425][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7599.518427][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7599.518430][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7599.518432][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7599.518434][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7624.512959][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7624.512963][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7624.512968][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7624.512979][    C2] Tainted: [L]=SOFTLOCKUP
[ 7624.512980][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7624.512982][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 7624.512988][ C2] Code: ff fe 48 39 c7 77 23 44 89 c2 e8 b7 e7 ff ff 83 f0 01 5b 5d 41 5c e9 0b fb 1a 02 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd <4c> 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48
All code
========
   0:	ff                   	(bad)
   1:	fe 48 39             	decb   0x39(%rax)
   4:	c7                   	(bad)
   5:	77 23                	ja     0x2a
   7:	44 89 c2             	mov    %r8d,%edx
   a:	e8 b7 e7 ff ff       	call   0xffffffffffffe7c6
   f:	83 f0 01             	xor    $0x1,%eax
  12:	5b                   	pop    %rbx
  13:	5d                   	pop    %rbp
  14:	41 5c                	pop    %r12
  16:	e9 0b fb 1a 02       	jmp    0x21afb26
  1b:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  22:	7f ff ff 
  25:	48 39 c7             	cmp    %rax,%rdi
  28:	76 dd                	jbe    0x7
  2a:*	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10		<-- trapping instruction
  2f:	48 89 fd             	mov    %rdi,%rbp
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4d 89 d1             	mov    %r10,%r9
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   5:	48 89 fd             	mov    %rdi,%rbp
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4d 89 d1             	mov    %r10,%r9
  15:	48                   	rex.W
[ 7624.512991][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000212
[ 7624.512994][    C2] RAX: ffff7fffffffffff RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7624.512997][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7624.512999][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7624.513001][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7624.513003][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7624.513006][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7624.513009][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7624.513012][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7624.513014][    C2] PKRU: 55555554
[ 7624.513016][    C2] Call Trace:
[ 7624.513018][    C2]  <TASK>
[ 7624.513021][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7624.513026][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7624.513034][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7624.513038][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7624.513041][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7624.513045][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7624.513050][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7624.513054][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7624.513060][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7624.513063][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7624.513066][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7624.513071][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7624.513077][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7624.513082][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7624.513088][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7624.513095][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7624.513098][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7624.513101][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7624.513104][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7624.513107][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7624.513112][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7624.513116][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7624.513124][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7624.513127][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7624.513132][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7624.513136][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7624.513140][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7624.513145][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7624.513149][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7624.513156][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7624.513161][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7624.513165][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7624.513167][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7624.513171][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7624.513175][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7624.513182][ C2] ksys_write (fs/read_write.c:738) 
[ 7624.513186][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7624.513189][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7624.513195][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7624.513199][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7624.513202][    C2] RIP: 0033:0x7f471c970337
[ 7624.513207][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7624.513209][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7624.513212][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7624.513214][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7624.513217][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7624.513219][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7624.513221][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7632.724319][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7632.724777][    C2] rcu: 2-....: (5403908 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2355848
| [ 7632.725153][    C2] rcu: (t=5408207 jiffies g=1286133 q=95332 ncpus=4)
| [ 7632.725389][    C2] Tainted: [L]=SOFTLOCKUP
[ 7632.725390][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7632.725392][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7632.725399][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7632.725402][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7632.725405][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7632.725407][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7632.725410][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7632.725412][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7632.725414][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7632.725416][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7632.725418][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7632.725422][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7632.725424][    C2] PKRU: 55555554
[ 7632.725425][    C2] Call Trace:
[ 7632.725427][    C2]  <TASK>
[ 7632.725429][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7632.725437][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7632.725441][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7632.725443][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7632.725448][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7632.725454][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7632.725458][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7632.725464][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7632.725466][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7632.725469][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7632.725474][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7632.725479][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7632.725485][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7632.725490][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7632.725498][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7632.725501][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7632.725504][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7632.725507][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7632.725510][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7632.725515][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7632.725519][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7632.725526][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7632.725530][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7632.725534][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7632.725539][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7632.725543][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7632.725547][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7632.725551][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7632.725558][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7632.725563][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7632.725566][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7632.725569][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7632.725573][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7632.725577][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7632.725584][ C2] ksys_write (fs/read_write.c:738) 
[ 7632.725588][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7632.725591][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7632.725597][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7632.725600][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7632.725603][    C2] RIP: 0033:0x7f471c970337
[ 7632.725608][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7632.725609][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7632.725612][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7632.725615][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7632.725616][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7632.725619][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7632.725621][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7660.512966][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7660.512970][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7660.512975][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7660.512987][    C2] Tainted: [L]=SOFTLOCKUP
[ 7660.512989][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7660.512991][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 7660.512997][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 7660.513001][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 7660.513004][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7660.513006][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7660.513009][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7660.513011][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7660.513013][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7660.513016][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7660.513018][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7660.513022][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7660.513025][    C2] PKRU: 55555554
[ 7660.513026][    C2] Call Trace:
[ 7660.513029][    C2]  <TASK>
[ 7660.513031][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7660.513038][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7660.513045][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7660.513050][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7660.513052][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7660.513056][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7660.513061][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7660.513065][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7660.513072][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7660.513075][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7660.513078][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7660.513083][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7660.513088][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7660.513094][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7660.513101][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7660.513108][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7660.513110][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7660.513114][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7660.513116][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7660.513119][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7660.513125][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7660.513129][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7660.513136][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7660.513140][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7660.513144][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7660.513148][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7660.513153][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7660.513157][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7660.513162][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7660.513168][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7660.513174][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7660.513177][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7660.513180][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7660.513184][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7660.513188][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7660.513196][ C2] ksys_write (fs/read_write.c:738) 
[ 7660.513199][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7660.513202][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7660.513208][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7660.513212][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7660.513216][    C2] RIP: 0033:0x7f471c970337
[ 7660.513222][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7660.513224][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7660.513227][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7660.513230][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7660.513232][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7660.513234][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7660.513236][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7688.512957][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7688.512961][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7688.512965][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7688.512976][    C2] Tainted: [L]=SOFTLOCKUP
[ 7688.512977][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7688.512979][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7688.512983][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7688.512986][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7688.512989][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7688.512991][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7688.512994][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7688.512996][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7688.512998][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7688.513000][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7688.513003][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7688.513007][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7688.513009][    C2] PKRU: 55555554
[ 7688.513011][    C2] Call Trace:
[ 7688.513012][    C2]  <TASK>
[ 7688.513015][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7688.513023][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7688.513027][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7688.513029][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7688.513033][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7688.513037][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7688.513041][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7688.513047][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7688.513050][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7688.513053][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7688.513059][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7688.513064][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7688.513070][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7688.513075][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7688.513082][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7688.513085][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7688.513089][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7688.513092][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7688.513095][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7688.513100][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7688.513103][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7688.513111][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7688.513114][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7688.513119][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7688.513123][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7688.513127][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7688.513131][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7688.513135][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7688.513142][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7688.513148][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7688.513151][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7688.513153][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7688.513158][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7688.513161][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7688.513169][ C2] ksys_write (fs/read_write.c:738) 
[ 7688.513172][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7688.513175][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7688.513181][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7688.513185][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7688.513188][    C2] RIP: 0033:0x7f471c970337
[ 7688.513193][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7688.513194][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7688.513197][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7688.513199][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7688.513202][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7688.513204][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7688.513206][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7697.821765][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7697.821944][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 7697.822179][    C2] NMI backtrace for cpu 2
| [ 7697.822190][    C2] Tainted: [L]=SOFTLOCKUP
[ 7697.822192][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7697.822193][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7697.822199][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7697.822203][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7697.822205][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7697.822208][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7697.822210][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7697.822213][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7697.822215][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7697.822217][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7697.822219][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7697.822223][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7697.822225][    C2] PKRU: 55555554
[ 7697.822226][    C2] Call Trace:
[ 7697.822228][    C2]  <TASK>
[ 7697.822231][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7697.822238][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7697.822242][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7697.822245][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7697.822248][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7697.822253][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7697.822257][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7697.822263][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7697.822265][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7697.822269][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7697.822273][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7697.822279][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7697.822284][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7697.822290][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7697.822297][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7697.822300][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7697.822303][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7697.822306][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7697.822308][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7697.822313][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7697.822318][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7697.822325][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7697.822329][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7697.822333][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7697.822337][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7697.822341][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7697.822345][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7697.822349][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7697.822356][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7697.822361][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7697.822364][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7697.822367][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7697.822371][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7697.822375][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7697.822382][ C2] ksys_write (fs/read_write.c:738) 
[ 7697.822385][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7697.822389][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7697.822394][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7697.822398][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7697.822401][    C2] RIP: 0033:0x7f471c970337
[ 7697.822405][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7697.822407][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7697.822411][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7697.822413][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7697.822415][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7697.822417][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7697.822419][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7710.727318][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7710.727648][    C2] rcu: 2-....: (5481850 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2394827
| [ 7710.728025][    C2] rcu: (t=5486210 jiffies g=1286133 q=96680 ncpus=4)
| [ 7710.728385][    C2] Tainted: [L]=SOFTLOCKUP
[ 7710.728386][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7710.728388][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7710.728394][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7710.728397][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7710.728400][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7710.728403][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7710.728405][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7710.728407][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7710.728409][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7710.728411][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7710.728414][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7710.728418][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7710.728420][    C2] PKRU: 55555554
[ 7710.728421][    C2] Call Trace:
[ 7710.728422][    C2]  <TASK>
[ 7710.728424][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7710.728432][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7710.728436][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7710.728439][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7710.728442][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7710.728447][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7710.728451][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7710.728457][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7710.728459][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7710.728462][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7710.728467][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7710.728473][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7710.728478][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7710.728484][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7710.728491][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7710.728494][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7710.728497][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7710.728500][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7710.728503][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7710.728508][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7710.728511][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7710.728519][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7710.728522][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7710.728526][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7710.728530][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7710.728534][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7710.728538][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7710.728542][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7710.728549][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7710.728554][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7710.728557][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7710.728560][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7710.728564][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7710.728568][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7710.728575][ C2] ksys_write (fs/read_write.c:738) 
[ 7710.728579][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7710.728581][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7710.728587][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7710.728591][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7710.728594][    C2] RIP: 0033:0x7f471c970337
[ 7710.728598][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7710.728599][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7710.728602][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7710.728604][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7710.728606][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7710.728608][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7710.728610][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7736.512957][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7736.512961][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7736.512966][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7736.512977][    C2] Tainted: [L]=SOFTLOCKUP
[ 7736.512978][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7736.512980][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 7736.512985][ C2] Code: ff fe 48 39 c7 77 23 44 89 c2 e8 b7 e7 ff ff 83 f0 01 5b 5d 41 5c e9 0b fb 1a 02 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd <4c> 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48
All code
========
   0:	ff                   	(bad)
   1:	fe 48 39             	decb   0x39(%rax)
   4:	c7                   	(bad)
   5:	77 23                	ja     0x2a
   7:	44 89 c2             	mov    %r8d,%edx
   a:	e8 b7 e7 ff ff       	call   0xffffffffffffe7c6
   f:	83 f0 01             	xor    $0x1,%eax
  12:	5b                   	pop    %rbx
  13:	5d                   	pop    %rbp
  14:	41 5c                	pop    %r12
  16:	e9 0b fb 1a 02       	jmp    0x21afb26
  1b:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  22:	7f ff ff 
  25:	48 39 c7             	cmp    %rax,%rdi
  28:	76 dd                	jbe    0x7
  2a:*	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10		<-- trapping instruction
  2f:	48 89 fd             	mov    %rdi,%rbp
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4d 89 d1             	mov    %r10,%r9
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   5:	48 89 fd             	mov    %rdi,%rbp
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4d 89 d1             	mov    %r10,%r9
  15:	48                   	rex.W
[ 7736.512988][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000212
[ 7736.512991][    C2] RAX: ffff7fffffffffff RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7736.512993][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7736.512996][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7736.512998][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7736.513000][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7736.513002][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7736.513004][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7736.513008][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7736.513010][    C2] PKRU: 55555554
[ 7736.513011][    C2] Call Trace:
[ 7736.513013][    C2]  <TASK>
[ 7736.513016][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7736.513021][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7736.513028][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7736.513032][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7736.513034][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7736.513038][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7736.513042][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7736.513046][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7736.513053][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7736.513055][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7736.513058][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7736.513064][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7736.513070][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7736.513075][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7736.513080][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7736.513087][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7736.513090][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7736.513094][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7736.513096][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7736.513100][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7736.513105][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7736.513109][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7736.513117][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7736.513121][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7736.513125][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7736.513129][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7736.513133][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7736.513137][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7736.513141][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7736.513148][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7736.513153][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7736.513157][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7736.513159][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7736.513163][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7736.513167][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7736.513175][ C2] ksys_write (fs/read_write.c:738) 
[ 7736.513178][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7736.513181][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7736.513187][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7736.513191][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7736.513195][    C2] RIP: 0033:0x7f471c970337
[ 7736.513199][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7736.513201][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7736.513204][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7736.513206][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7736.513208][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7736.513210][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7736.513212][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7764.512957][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7764.512961][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7764.512966][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7764.512977][    C2] Tainted: [L]=SOFTLOCKUP
[ 7764.512978][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7764.512980][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7764.512985][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7764.512989][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7764.512992][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7764.512994][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7764.512997][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7764.512999][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7764.513001][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7764.513003][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7764.513006][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7764.513010][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7764.513013][    C2] PKRU: 55555554
[ 7764.513014][    C2] Call Trace:
[ 7764.513016][    C2]  <TASK>
[ 7764.513019][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7764.513026][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7764.513030][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7764.513033][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7764.513036][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7764.513041][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7764.513045][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7764.513052][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7764.513055][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7764.513058][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7764.513063][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7764.513069][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7764.513074][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7764.513079][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7764.513087][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7764.513090][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7764.513093][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7764.513095][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7764.513099][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7764.513104][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7764.513107][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7764.513115][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7764.513118][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7764.513122][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7764.513126][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7764.513130][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7764.513134][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7764.513138][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7764.513145][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7764.513150][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7764.513153][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7764.513156][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7764.513160][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7764.513164][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7764.513172][ C2] ksys_write (fs/read_write.c:738) 
[ 7764.513175][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7764.513178][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7764.513184][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7764.513188][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7764.513191][    C2] RIP: 0033:0x7f471c970337
[ 7764.513195][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7764.513197][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7764.513207][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7764.513209][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7764.513211][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7764.513213][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7764.513215][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7788.730318][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7788.730662][    C2] rcu: 2-....: (5559806 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2433811
| [ 7788.731040][    C2] rcu: (t=5564213 jiffies g=1286133 q=97706 ncpus=4)
| [ 7788.731405][    C2] Tainted: [L]=SOFTLOCKUP
[ 7788.731407][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7788.731409][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:31) 
[ 7788.731415][ C2] Code: 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
   0:	41 5c                	pop    %r12
   2:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fb2
   7:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
  2a:*	89 f6                	mov    %esi,%esi		<-- trapping instruction
  2c:	31 d2                	xor    %edx,%edx
  2e:	e9 4f f0 ff ff       	jmp    0xfffffffffffff082
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 f6                	mov    %esi,%esi
   2:	31 d2                	xor    %edx,%edx
   4:	e9 4f f0 ff ff       	jmp    0xfffffffffffff058
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 7788.731418][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 7788.731421][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7788.731423][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7788.731425][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7788.731427][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7788.731429][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7788.731432][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7788.731435][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7788.731438][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7788.731440][    C2] PKRU: 55555554
[ 7788.731442][    C2] Call Trace:
[ 7788.731443][    C2]  <TASK>
[ 7788.731444][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7788.731450][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7788.731457][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7788.731461][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7788.731464][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7788.731467][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7788.731472][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7788.731476][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7788.731482][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7788.731485][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7788.731488][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7788.731493][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7788.731499][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7788.731504][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7788.731510][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7788.731517][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7788.731520][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7788.731523][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7788.731526][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7788.731529][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7788.731534][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7788.731537][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7788.731545][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7788.731548][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7788.731552][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7788.731556][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7788.731560][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7788.731564][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7788.731568][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7788.731574][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7788.731580][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7788.731583][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7788.731586][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7788.731590][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7788.731593][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7788.731601][ C2] ksys_write (fs/read_write.c:738) 
[ 7788.731604][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7788.731607][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7788.731613][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7788.731616][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7788.731619][    C2] RIP: 0033:0x7f471c970337
[ 7788.731624][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7788.731626][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7788.731629][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7788.731631][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7788.731633][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7788.731636][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7788.731637][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7796.125767][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7796.125942][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 7796.126183][    C2] NMI backtrace for cpu 2
| [ 7796.126193][    C2] Tainted: [L]=SOFTLOCKUP
[ 7796.126195][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7796.126197][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7796.126203][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7796.126206][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7796.126209][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7796.126212][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7796.126214][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7796.126216][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7796.126218][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7796.126220][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7796.126223][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7796.126226][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7796.126229][    C2] PKRU: 55555554
[ 7796.126230][    C2] Call Trace:
[ 7796.126232][    C2]  <TASK>
[ 7796.126234][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7796.126242][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7796.126246][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7796.126249][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7796.126252][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7796.126257][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7796.126261][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7796.126267][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7796.126270][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7796.126273][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7796.126278][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7796.126283][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7796.126289][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7796.126294][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7796.126301][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7796.126304][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7796.126307][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7796.126310][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7796.126313][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7796.126319][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7796.126322][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7796.126329][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7796.126333][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7796.126337][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7796.126341][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7796.126346][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7796.126349][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7796.126353][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7796.126360][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7796.126365][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7796.126369][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7796.126372][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7796.126376][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7796.126380][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7796.126387][ C2] ksys_write (fs/read_write.c:738) 
[ 7796.126390][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7796.126393][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7796.126399][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7796.126402][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7796.126406][    C2] RIP: 0033:0x7f471c970337
[ 7796.126410][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7796.126412][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7796.126415][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7796.126417][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7796.126420][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7796.126422][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7796.126424][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7820.512958][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7820.512962][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7820.512967][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7820.512977][    C2] Tainted: [L]=SOFTLOCKUP
[ 7820.512979][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7820.512981][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 7820.512985][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 7820.512988][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000282
[ 7820.512991][    C2] RAX: ffff88800b85eb34 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7820.512994][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7820.512996][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7820.512998][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7820.513000][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7820.513002][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7820.513005][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7820.513008][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7820.513011][    C2] PKRU: 55555554
[ 7820.513012][    C2] Call Trace:
[ 7820.513014][    C2]  <TASK>
[ 7820.513016][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7820.513022][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7820.513029][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7820.513032][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7820.513035][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7820.513038][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7820.513043][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7820.513047][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7820.513054][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7820.513056][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7820.513059][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7820.513064][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7820.513070][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7820.513076][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7820.513082][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7820.513089][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7820.513091][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7820.513095][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7820.513098][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7820.513101][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7820.513106][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7820.513110][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7820.513117][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7820.513121][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7820.513125][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7820.513129][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7820.513134][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7820.513138][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7820.513142][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7820.513149][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7820.513154][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7820.513157][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7820.513160][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7820.513164][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7820.513168][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7820.513175][ C2] ksys_write (fs/read_write.c:738) 
[ 7820.513179][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7820.513182][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7820.513188][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7820.513191][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7820.513194][    C2] RIP: 0033:0x7f471c970337
[ 7820.513199][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7820.513200][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7820.513203][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7820.513206][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7820.513208][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7820.513210][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7820.513212][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7848.512958][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7848.512962][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7848.512966][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7848.512977][    C2] Tainted: [L]=SOFTLOCKUP
[ 7848.512979][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7848.512981][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7848.512985][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7848.512988][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7848.512991][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7848.512994][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7848.512996][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7848.512998][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7848.513001][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7848.513003][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7848.513006][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7848.513009][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7848.513011][    C2] PKRU: 55555554
[ 7848.513013][    C2] Call Trace:
[ 7848.513015][    C2]  <TASK>
[ 7848.513017][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7848.513025][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7848.513029][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7848.513032][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7848.513035][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7848.513040][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7848.513044][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7848.513050][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7848.513053][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7848.513056][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7848.513062][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7848.513068][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7848.513073][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7848.513079][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7848.513085][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7848.513088][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7848.513092][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7848.513094][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7848.513097][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7848.513102][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7848.513106][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7848.513113][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7848.513117][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7848.513121][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7848.513125][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7848.513130][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7848.513133][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7848.513137][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7848.513144][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7848.513149][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7848.513153][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7848.513155][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7848.513159][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7848.513163][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7848.513171][ C2] ksys_write (fs/read_write.c:738) 
[ 7848.513174][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7848.513177][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7848.513183][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7848.513186][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7848.513190][    C2] RIP: 0033:0x7f471c970337
[ 7848.513194][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7848.513196][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7848.513199][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7848.513201][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7848.513204][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7848.513206][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7848.513208][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7866.733319][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7866.733660][    C2] rcu: 2-....: (5637748 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2472789
| [ 7866.734157][    C2] rcu: (t=5642216 jiffies g=1286133 q=99057 ncpus=4)
| [ 7866.734392][    C2] Tainted: [L]=SOFTLOCKUP
[ 7866.734394][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7866.734395][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7866.734401][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 7866.734404][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7866.734407][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7866.734410][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7866.734412][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7866.734415][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7866.734417][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7866.734419][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7866.734421][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7866.734425][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7866.734428][    C2] PKRU: 55555554
[ 7866.734429][    C2] Call Trace:
[ 7866.734430][    C2]  <TASK>
[ 7866.734433][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7866.734440][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7866.734444][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7866.734447][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7866.734450][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7866.734455][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7866.734459][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7866.734465][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7866.734468][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7866.734471][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7866.734476][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7866.734482][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7866.734488][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7866.734493][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7866.734500][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7866.734503][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7866.734506][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7866.734509][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7866.734512][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7866.734517][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7866.734521][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7866.734528][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7866.734532][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7866.734536][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7866.734540][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7866.734544][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7866.734548][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7866.734552][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7866.734559][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7866.734564][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7866.734567][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7866.734570][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7866.734574][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7866.734578][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7866.734585][ C2] ksys_write (fs/read_write.c:738) 
[ 7866.734589][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7866.734592][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7866.734597][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7866.734601][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7866.734604][    C2] RIP: 0033:0x7f471c970337
[ 7866.734608][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7866.734610][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7866.734613][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7866.734615][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7866.734617][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7866.734619][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7866.734621][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7892.512958][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7892.512962][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7892.512966][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7892.512977][    C2] Tainted: [L]=SOFTLOCKUP
[ 7892.512978][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7892.512980][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7892.512985][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7892.512988][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7892.512991][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7892.512993][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7892.512996][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7892.512998][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7892.513000][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7892.513002][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7892.513005][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7892.513009][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7892.513012][    C2] PKRU: 55555554
[ 7892.513013][    C2] Call Trace:
[ 7892.513015][    C2]  <TASK>
[ 7892.513018][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7892.513026][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7892.513030][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7892.513032][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7892.513036][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7892.513041][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7892.513045][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7892.513051][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7892.513054][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7892.513057][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7892.513063][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7892.513068][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7892.513074][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7892.513079][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7892.513086][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7892.513089][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7892.513092][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7892.513095][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7892.513098][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7892.513103][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7892.513107][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7892.513114][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7892.513118][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7892.513122][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7892.513127][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7892.513131][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7892.513135][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7892.513139][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7892.513146][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7892.513151][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7892.513155][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7892.513157][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7892.513162][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7892.513165][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7892.513173][ C2] ksys_write (fs/read_write.c:738) 
[ 7892.513176][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7892.513179][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7892.513184][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7892.513188][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7892.513191][    C2] RIP: 0033:0x7f471c970337
[ 7892.513196][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7892.513198][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7892.513201][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7892.513203][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7892.513205][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7892.513207][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7892.513209][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7894.429699][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7894.429951][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 7894.430103][    C2] NMI backtrace for cpu 2
| [ 7894.430113][    C2] Tainted: [L]=SOFTLOCKUP
[ 7894.430115][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7894.430117][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 7894.430124][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 7894.430127][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 7894.430130][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 7894.430133][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 7894.430135][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 7894.430137][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 7894.430139][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 7894.430141][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7894.430144][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7894.430147][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7894.430149][    C2] PKRU: 55555554
[ 7894.430151][    C2] Call Trace:
[ 7894.430153][    C2]  <IRQ>
[ 7894.430155][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 7894.430164][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 7894.430173][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 7894.430181][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 7894.430186][    C2]  </IRQ>
[ 7894.430187][    C2]  <TASK>
[ 7894.430189][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 7894.430193][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7894.430197][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7894.430200][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7894.430203][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7894.430205][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7894.430207][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7894.430209][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7894.430211][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7894.430215][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7894.430222][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7894.430229][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7894.430232][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7894.430235][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7894.430239][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7894.430244][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7894.430248][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7894.430254][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7894.430257][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7894.430260][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7894.430265][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7894.430271][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7894.430276][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7894.430282][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7894.430289][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7894.430292][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7894.430295][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7894.430298][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7894.430301][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7894.430306][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7894.430310][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7894.430318][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7894.430322][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7894.430326][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7894.430330][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7894.430334][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7894.430338][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7894.430341][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7894.430348][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7894.430353][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7894.430356][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7894.430359][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7894.430363][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7894.430367][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7894.430374][ C2] ksys_write (fs/read_write.c:738) 
[ 7894.430378][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7894.430381][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7894.430386][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7894.430389][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7894.430392][    C2] RIP: 0033:0x7f471c970337
[ 7894.430397][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7894.430398][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7894.430401][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7894.430403][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7894.430405][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7894.430407][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7894.430410][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7920.512957][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7920.512962][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7920.512966][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7920.512977][    C2] Tainted: [L]=SOFTLOCKUP
[ 7920.512978][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7920.512980][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:31) 
[ 7920.512985][ C2] Code: 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
   0:	41 5c                	pop    %r12
   2:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fb2
   7:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
  2a:*	89 f6                	mov    %esi,%esi		<-- trapping instruction
  2c:	31 d2                	xor    %edx,%edx
  2e:	e9 4f f0 ff ff       	jmp    0xfffffffffffff082
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 f6                	mov    %esi,%esi
   2:	31 d2                	xor    %edx,%edx
   4:	e9 4f f0 ff ff       	jmp    0xfffffffffffff058
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 7920.512989][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 7920.512991][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7920.512994][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7920.512996][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7920.512998][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7920.513000][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7920.513003][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7920.513006][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7920.513009][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7920.513011][    C2] PKRU: 55555554
[ 7920.513013][    C2] Call Trace:
[ 7920.513015][    C2]  <TASK>
[ 7920.513017][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7920.513023][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7920.513030][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7920.513034][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7920.513036][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7920.513040][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7920.513045][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7920.513049][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7920.513055][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7920.513058][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7920.513062][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7920.513066][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7920.513072][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7920.513077][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7920.513083][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7920.513090][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7920.513093][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7920.513096][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7920.513098][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7920.513102][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7920.513107][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7920.513110][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7920.513118][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7920.513122][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7920.513126][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7920.513130][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7920.513135][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7920.513139][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7920.513142][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7920.513149][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7920.513154][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7920.513158][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7920.513160][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7920.513164][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7920.513168][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7920.513175][ C2] ksys_write (fs/read_write.c:738) 
[ 7920.513179][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7920.513182][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7920.513188][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7920.513191][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7920.513195][    C2] RIP: 0033:0x7f471c970337
[ 7920.513199][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7920.513201][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7920.513204][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7920.513206][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7920.513209][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7920.513211][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7920.513213][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7944.736319][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7944.736655][    C2] rcu: 2-....: (5715686 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2511768
| [ 7944.737162][    C2] rcu: (t=5720219 jiffies g=1286133 q=100486 ncpus=4)
| [ 7944.737406][    C2] Tainted: [L]=SOFTLOCKUP
[ 7944.737408][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7944.737409][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7944.737415][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7944.737418][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7944.737422][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7944.737424][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7944.737426][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7944.737428][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7944.737430][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7944.737432][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7944.737435][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7944.737439][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7944.737441][    C2] PKRU: 55555554
[ 7944.737443][    C2] Call Trace:
[ 7944.737444][    C2]  <TASK>
[ 7944.737446][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7944.737454][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7944.737458][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7944.737461][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7944.737464][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7944.737470][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7944.737474][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7944.737480][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7944.737483][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7944.737486][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7944.737491][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7944.737496][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7944.737502][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7944.737507][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7944.737514][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7944.737517][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7944.737521][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7944.737524][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7944.737526][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7944.737532][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7944.737535][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7944.737542][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7944.737546][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7944.737550][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7944.737554][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7944.737558][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7944.737561][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7944.737565][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7944.737571][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7944.737577][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7944.737580][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7944.737582][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7944.737586][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7944.737590][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7944.737598][ C2] ksys_write (fs/read_write.c:738) 
[ 7944.737601][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7944.737604][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7944.737610][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7944.737614][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7944.737617][    C2] RIP: 0033:0x7f471c970337
[ 7944.737621][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7944.737623][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7944.737626][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7944.737628][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7944.737630][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7944.737632][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7944.737634][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7972.512958][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 7972.512962][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 7972.512966][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 7972.512977][    C2] Tainted: [L]=SOFTLOCKUP
[ 7972.512979][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7972.512980][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7972.512985][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7972.512989][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7972.512991][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7972.512994][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7972.512997][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7972.512999][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7972.513001][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7972.513003][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7972.513006][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7972.513010][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7972.513012][    C2] PKRU: 55555554
[ 7972.513014][    C2] Call Trace:
[ 7972.513016][    C2]  <TASK>
[ 7972.513019][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7972.513026][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7972.513030][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7972.513033][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7972.513036][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7972.513041][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7972.513045][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7972.513052][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7972.513055][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7972.513058][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7972.513063][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7972.513069][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7972.513074][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7972.513079][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7972.513086][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7972.513089][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7972.513092][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7972.513095][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7972.513098][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7972.513103][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7972.513107][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7972.513114][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7972.513117][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7972.513122][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7972.513126][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7972.513130][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7972.513134][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7972.513138][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7972.513145][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7972.513150][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7972.513154][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7972.513156][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7972.513160][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7972.513165][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7972.513172][ C2] ksys_write (fs/read_write.c:738) 
[ 7972.513175][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7972.513178][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7972.513184][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7972.513188][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7972.513191][    C2] RIP: 0033:0x7f471c970337
[ 7972.513195][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7972.513197][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7972.513200][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7972.513202][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7972.513204][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7972.513207][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7972.513209][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 7992.733767][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7992.734028][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 7992.734179][    C2] NMI backtrace for cpu 2
| [ 7992.734191][    C2] Tainted: [L]=SOFTLOCKUP
[ 7992.734192][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7992.734194][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 7992.734201][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 7992.734204][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 7992.734207][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 7992.734210][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 7992.734212][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 7992.734214][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 7992.734217][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 7992.734219][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 7992.734221][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7992.734225][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 7992.734227][    C2] PKRU: 55555554
[ 7992.734229][    C2] Call Trace:
[ 7992.734232][    C2]  <IRQ>
[ 7992.734233][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 7992.734242][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 7992.734250][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 7992.734258][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 7992.734263][    C2]  </IRQ>
[ 7992.734264][    C2]  <TASK>
[ 7992.734266][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 7992.734270][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 7992.734275][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 7992.734278][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 7992.734281][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 7992.734283][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 7992.734285][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 7992.734287][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 7992.734289][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 7992.734293][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 7992.734299][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 7992.734306][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 7992.734310][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7992.734312][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7992.734317][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7992.734322][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 7992.734326][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 7992.734332][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7992.734334][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 7992.734337][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 7992.734342][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 7992.734348][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 7992.734353][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 7992.734358][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 7992.734365][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 7992.734368][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 7992.734371][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 7992.734373][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 7992.734376][ C2] ? release_sock (net/core/sock.c:3747) 
[ 7992.734381][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 7992.734385][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7992.734392][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 7992.734396][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 7992.734400][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 7992.734404][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 7992.734408][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 7992.734411][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 7992.734416][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 7992.734422][ C2] ? ksys_write (fs/read_write.c:738) 
[ 7992.734427][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 7992.734431][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 7992.734433][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 7992.734437][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 7992.734441][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 7992.734448][ C2] ksys_write (fs/read_write.c:738) 
[ 7992.734452][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 7992.734455][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 7992.734460][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 7992.734464][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 7992.734467][    C2] RIP: 0033:0x7f471c970337
[ 7992.734472][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 7992.734473][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 7992.734477][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 7992.734479][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 7992.734481][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 7992.734484][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 7992.734486][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8020.512958][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8020.512962][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8020.512966][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8020.512978][    C2] Tainted: [L]=SOFTLOCKUP
[ 8020.512979][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8020.512981][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 8020.512986][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 8020.512990][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000282
[ 8020.512992][    C2] RAX: ffff88800b85eb34 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8020.512995][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8020.512997][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8020.512999][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8020.513001][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8020.513003][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8020.513005][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8020.513009][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8020.513011][    C2] PKRU: 55555554
[ 8020.513013][    C2] Call Trace:
[ 8020.513015][    C2]  <TASK>
[ 8020.513017][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8020.513022][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8020.513030][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8020.513033][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8020.513036][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8020.513039][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8020.513044][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8020.513048][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8020.513055][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8020.513057][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8020.513060][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8020.513065][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8020.513071][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8020.513077][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8020.513082][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8020.513089][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8020.513092][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8020.513096][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8020.513099][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8020.513102][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8020.513107][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8020.513111][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8020.513118][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8020.513122][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8020.513126][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8020.513131][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8020.513135][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8020.513139][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8020.513143][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8020.513150][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8020.513155][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8020.513158][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8020.513161][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8020.513165][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8020.513169][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8020.513176][ C2] ksys_write (fs/read_write.c:738) 
[ 8020.513180][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8020.513183][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8020.513189][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8020.513192][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8020.513195][    C2] RIP: 0033:0x7f471c970337
[ 8020.513200][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8020.513202][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8020.513205][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8020.513207][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8020.513210][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8020.513212][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8020.513214][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8022.739319][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8022.739789][    C2] rcu: 2-....: (5793624 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2550743
| [ 8022.740162][    C2] rcu: (t=5798222 jiffies g=1286133 q=101915 ncpus=4)
| [ 8022.740399][    C2] Tainted: [L]=SOFTLOCKUP
[ 8022.740401][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8022.740402][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8022.740408][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8022.740411][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8022.740414][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8022.740417][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8022.740419][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8022.740421][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8022.740423][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8022.740426][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8022.740428][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8022.740432][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8022.740434][    C2] PKRU: 55555554
[ 8022.740436][    C2] Call Trace:
[ 8022.740437][    C2]  <TASK>
[ 8022.740439][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8022.740447][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8022.740450][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8022.740453][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8022.740457][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8022.740462][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8022.740465][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8022.740471][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8022.740474][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8022.740477][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8022.740482][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8022.740488][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8022.740494][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8022.740499][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8022.740506][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8022.740509][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8022.740512][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8022.740515][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8022.740518][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8022.740523][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8022.740526][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8022.740534][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8022.740538][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8022.740542][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8022.740546][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8022.740550][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8022.740554][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8022.740557][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8022.740564][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8022.740569][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8022.740572][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8022.740575][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8022.740579][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8022.740582][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8022.740590][ C2] ksys_write (fs/read_write.c:738) 
[ 8022.740593][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8022.740596][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8022.740602][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8022.740605][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8022.740608][    C2] RIP: 0033:0x7f471c970337
[ 8022.740613][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8022.740614][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8022.740618][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8022.740620][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8022.740623][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8022.740625][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8022.740627][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8048.512958][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8048.512962][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8048.512967][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8048.512977][    C2] Tainted: [L]=SOFTLOCKUP
[ 8048.512979][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8048.512981][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8048.512986][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8048.512989][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8048.512992][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8048.512994][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8048.512996][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8048.512998][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8048.513000][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8048.513003][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8048.513006][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8048.513010][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8048.513012][    C2] PKRU: 55555554
[ 8048.513013][    C2] Call Trace:
[ 8048.513015][    C2]  <TASK>
[ 8048.513018][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8048.513025][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8048.513029][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8048.513032][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8048.513035][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8048.513040][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8048.513044][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8048.513050][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8048.513053][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8048.513056][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8048.513061][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8048.513067][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8048.513073][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8048.513078][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8048.513085][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8048.513088][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8048.513091][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8048.513094][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8048.513097][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8048.513103][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8048.513106][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8048.513114][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8048.513117][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8048.513121][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8048.513125][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8048.513129][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8048.513133][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8048.513137][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8048.513144][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8048.513150][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8048.513153][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8048.513156][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8048.513160][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8048.513164][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8048.513171][ C2] ksys_write (fs/read_write.c:738) 
[ 8048.513174][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8048.513178][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8048.513183][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8048.513187][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8048.513191][    C2] RIP: 0033:0x7f471c970337
[ 8048.513195][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8048.513197][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8048.513200][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8048.513202][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8048.513204][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8048.513206][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8048.513209][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8076.512958][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8076.512962][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8076.512967][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8076.512978][    C2] Tainted: [L]=SOFTLOCKUP
[ 8076.512980][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8076.512981][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8076.512986][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8076.512989][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8076.512992][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8076.512994][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8076.512997][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8076.512999][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8076.513001][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8076.513003][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8076.513006][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8076.513010][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8076.513012][    C2] PKRU: 55555554
[ 8076.513013][    C2] Call Trace:
[ 8076.513015][    C2]  <TASK>
[ 8076.513018][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8076.513025][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8076.513029][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8076.513032][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8076.513035][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8076.513040][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8076.513044][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8076.513051][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8076.513053][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8076.513056][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8076.513061][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8076.513067][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8076.513073][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8076.513078][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8076.513085][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8076.513088][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8076.513091][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8076.513093][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8076.513097][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8076.513102][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8076.513105][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8076.513112][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8076.513116][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8076.513120][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8076.513124][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8076.513128][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8076.513132][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8076.513136][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8076.513142][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8076.513148][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8076.513151][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8076.513154][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8076.513158][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8076.513162][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8076.513169][ C2] ksys_write (fs/read_write.c:738) 
[ 8076.513172][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8076.513175][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8076.513181][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8076.513185][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8076.513188][    C2] RIP: 0033:0x7f471c970337
[ 8076.513193][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8076.513195][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8076.513198][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8076.513201][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8076.513204][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8076.513206][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8076.513208][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8091.037753][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8091.038010][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 8091.038163][    C2] NMI backtrace for cpu 2
| [ 8091.038175][    C2] Tainted: [L]=SOFTLOCKUP
[ 8091.038176][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8091.038178][ C2] RIP: 0010:vring_interrupt (drivers/virtio/virtio_ring.c:2679 drivers/virtio/virtio_ring.c:2694) 
[ 8091.038185][ C2] Code: 7e 40 41 54 48 89 fa 55 48 89 f5 48 c1 ea 03 53 0f b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 97 02 00 00 0f b6 5d 40 <80> fb 01 0f 87 ac 8f a0 fe 48 b8 00 00 00 00 00 fc ff df 48 8d 7d
All code
========
   0:	7e 40                	jle    0x42
   2:	41 54                	push   %r12
   4:	48 89 fa             	mov    %rdi,%rdx
   7:	55                   	push   %rbp
   8:	48 89 f5             	mov    %rsi,%rbp
   b:	48 c1 ea 03          	shr    $0x3,%rdx
   f:	53                   	push   %rbx
  10:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax
  14:	48 89 fa             	mov    %rdi,%rdx
  17:	83 e2 07             	and    $0x7,%edx
  1a:	38 d0                	cmp    %dl,%al
  1c:	7f 08                	jg     0x26
  1e:	84 c0                	test   %al,%al
  20:	0f 85 97 02 00 00    	jne    0x2bd
  26:	0f b6 5d 40          	movzbl 0x40(%rbp),%ebx
  2a:*	80 fb 01             	cmp    $0x1,%bl		<-- trapping instruction
  2d:	0f 87 ac 8f a0 fe    	ja     0xfffffffffea08fdf
  33:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  3a:	fc ff df 
  3d:	48                   	rex.W
  3e:	8d                   	.byte 0x8d
  3f:	7d                   	.byte 0x7d

Code starting with the faulting instruction
===========================================
   0:	80 fb 01             	cmp    $0x1,%bl
   3:	0f 87 ac 8f a0 fe    	ja     0xfffffffffea08fb5
   9:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  10:	fc ff df 
  13:	48                   	rex.W
  14:	8d                   	.byte 0x8d
  15:	7d                   	.byte 0x7d
[ 8091.038189][    C2] RSP: 0018:ffffc90000218ea0 EFLAGS: 00000046
[ 8091.038192][    C2] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffa03f1df0
[ 8091.038195][    C2] RDX: 0000000000000000 RSI: ffff888006350a00 RDI: ffff888006350a40
[ 8091.038197][    C2] RBP: ffff888006350a00 R08: 0000000000000001 R09: fffff520000431c6
[ 8091.038199][    C2] R10: 0000000000000003 R11: ffffc90000218ff8 R12: 0000000000000000
[ 8091.038201][    C2] R13: ffff88800625bd78 R14: dffffc0000000000 R15: ffff88800625bd38
[ 8091.038203][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8091.038206][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8091.038209][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8091.038211][    C2] PKRU: 55555554
[ 8091.038213][    C2] Call Trace:
[ 8091.038215][    C2]  <IRQ>
[ 8091.038218][ C2] vm_interrupt (drivers/virtio/virtio_mmio.c:319 (discriminator 3)) 
[ 8091.038226][ C2] ? __pfx_vm_interrupt (drivers/virtio/virtio_mmio.c:301) 
[ 8091.038229][ C2] __handle_irq_event_percpu (kernel/irq/handle.c:159 (discriminator 1)) 
[ 8091.038237][ C2] handle_irq_event (kernel/irq/handle.c:195 kernel/irq/handle.c:210) 
[ 8091.038241][ C2] handle_fasteoi_irq (kernel/irq/chip.c:644 kernel/irq/chip.c:708) 
[ 8091.038247][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 8091.038254][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 8091.038259][    C2]  </IRQ>
[ 8091.038260][    C2]  <TASK>
[ 8091.038262][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 8091.038266][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8091.038270][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8091.038273][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8091.038276][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8091.038278][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8091.038280][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8091.038282][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8091.038285][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8091.038289][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8091.038295][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8091.038302][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8091.038305][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8091.038308][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8091.038311][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8091.038317][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8091.038321][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8091.038328][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8091.038330][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8091.038333][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8091.038338][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8091.038344][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8091.038349][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8091.038354][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8091.038361][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8091.038364][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8091.038367][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8091.038370][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8091.038373][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8091.038378][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8091.038382][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8091.038389][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8091.038393][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8091.038397][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8091.038401][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8091.038405][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8091.038409][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8091.038413][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8091.038420][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8091.038425][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8091.038429][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8091.038432][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8091.038436][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8091.038440][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8091.038447][ C2] ksys_write (fs/read_write.c:738) 
[ 8091.038450][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8091.038453][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8091.038459][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8091.038463][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8091.038466][    C2] RIP: 0033:0x7f471c970337
[ 8091.038471][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8091.038473][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8091.038476][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8091.038478][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8091.038480][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8091.038482][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8091.038485][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8100.742318][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8100.742646][    C2] rcu: 2-....: (5871562 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2589722
| [ 8100.743153][    C2] rcu: (t=5876225 jiffies g=1286133 q=103353 ncpus=4)
| [ 8100.743387][    C2] Tainted: [L]=SOFTLOCKUP
[ 8100.743388][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8100.743390][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8100.743396][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8100.743399][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8100.743402][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8100.743405][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8100.743407][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8100.743409][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8100.743411][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8100.743413][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8100.743415][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8100.743419][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8100.743421][    C2] PKRU: 55555554
[ 8100.743422][    C2] Call Trace:
[ 8100.743424][    C2]  <TASK>
[ 8100.743426][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8100.743434][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8100.743437][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8100.743440][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8100.743443][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8100.743448][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8100.743452][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8100.743458][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8100.743461][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8100.743464][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8100.743469][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8100.743475][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8100.743480][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8100.743485][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8100.743493][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8100.743495][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8100.743499][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8100.743502][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8100.743505][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8100.743510][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8100.743513][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8100.743521][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8100.743524][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8100.743528][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8100.743533][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8100.743537][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8100.743540][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8100.743544][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8100.743551][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8100.743556][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8100.743559][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8100.743562][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8100.743566][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8100.743570][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8100.743577][ C2] ksys_write (fs/read_write.c:738) 
[ 8100.743581][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8100.743584][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8100.743589][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8100.743593][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8100.743596][    C2] RIP: 0033:0x7f471c970337
[ 8100.743600][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8100.743602][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8100.743605][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8100.743607][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8100.743609][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8100.743612][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8100.743613][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8128.512958][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8128.512963][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8128.512967][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8128.512978][    C2] Tainted: [L]=SOFTLOCKUP
[ 8128.512979][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8128.512981][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8128.512986][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8128.512989][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8128.512992][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8128.512994][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8128.512997][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8128.512999][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8128.513001][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8128.513003][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8128.513005][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8128.513009][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8128.513012][    C2] PKRU: 55555554
[ 8128.513013][    C2] Call Trace:
[ 8128.513015][    C2]  <TASK>
[ 8128.513018][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8128.513025][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8128.513029][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8128.513032][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8128.513035][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8128.513040][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8128.513044][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8128.513050][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8128.513053][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8128.513056][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8128.513061][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8128.513067][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8128.513072][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8128.513078][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8128.513085][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8128.513087][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8128.513091][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8128.513093][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8128.513096][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8128.513101][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8128.513105][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8128.513112][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8128.513115][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8128.513119][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8128.513124][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8128.513128][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8128.513131][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8128.513135][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8128.513142][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8128.513148][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8128.513151][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8128.513154][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8128.513158][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8128.513162][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8128.513169][ C2] ksys_write (fs/read_write.c:738) 
[ 8128.513172][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8128.513175][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8128.513181][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8128.513185][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8128.513188][    C2] RIP: 0033:0x7f471c970337
[ 8128.513193][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8128.513195][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8128.513198][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8128.513200][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8128.513203][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8128.513205][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8128.513207][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8156.512958][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8156.512962][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8156.512966][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8156.512977][    C2] Tainted: [L]=SOFTLOCKUP
[ 8156.512979][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8156.512981][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8156.512985][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8156.512989][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8156.512991][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8156.512994][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8156.512996][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8156.512998][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8156.513000][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8156.513002][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8156.513005][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8156.513009][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8156.513011][    C2] PKRU: 55555554
[ 8156.513013][    C2] Call Trace:
[ 8156.513015][    C2]  <TASK>
[ 8156.513017][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8156.513025][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8156.513029][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8156.513031][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8156.513035][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8156.513039][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8156.513043][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8156.513050][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8156.513053][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8156.513056][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8156.513061][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8156.513067][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8156.513072][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8156.513078][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8156.513084][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8156.513088][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8156.513091][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8156.513094][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8156.513097][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8156.513102][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8156.513106][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8156.513113][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8156.513116][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8156.513120][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8156.513125][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8156.513129][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8156.513133][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8156.513137][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8156.513144][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8156.513149][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8156.513153][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8156.513156][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8156.513160][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8156.513164][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8156.513171][ C2] ksys_write (fs/read_write.c:738) 
[ 8156.513174][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8156.513177][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8156.513183][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8156.513187][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8156.513190][    C2] RIP: 0033:0x7f471c970337
[ 8156.513195][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8156.513197][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8156.513200][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8156.513202][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8156.513204][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8156.513207][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8156.513209][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8178.745320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8178.745728][    C2] rcu: 2-....: (5949518 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2628707
| [ 8178.746255][    C2] rcu: (t=5954228 jiffies g=1286133 q=104376 ncpus=4)
| [ 8178.746509][    C2] Tainted: [L]=SOFTLOCKUP
[ 8178.746510][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8178.746513][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8178.746526][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8178.746530][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8178.746534][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8178.746536][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8178.746539][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8178.746541][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8178.746543][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8178.746546][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8178.746549][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8178.746553][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8178.746555][    C2] PKRU: 55555554
[ 8178.746556][    C2] Call Trace:
[ 8178.746558][    C2]  <TASK>
[ 8178.746561][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8178.746568][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8178.746574][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8178.746577][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8178.746583][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8178.746591][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8178.746595][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8178.746602][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8178.746605][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8178.746607][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8178.746612][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8178.746619][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8178.746624][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8178.746633][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8178.746641][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8178.746644][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8178.746647][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8178.746650][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8178.746653][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8178.746660][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8178.746664][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8178.746671][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8178.746675][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8178.746679][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8178.746686][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8178.746691][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8178.746697][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8178.746703][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8178.746709][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8178.746718][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8178.746721][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8178.746724][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8178.746728][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8178.746732][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8178.746739][ C2] ksys_write (fs/read_write.c:738) 
[ 8178.746743][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8178.746746][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8178.746754][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8178.746759][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8178.746763][    C2] RIP: 0033:0x7f471c970337
[ 8178.746773][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8178.746775][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8178.746779][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8178.746781][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8178.746783][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8178.746785][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8178.746787][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8189.341856][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8189.342032][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 8189.342190][    C2] NMI backtrace for cpu 2
| [ 8189.342203][    C2] Tainted: [L]=SOFTLOCKUP
[ 8189.342205][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8189.342208][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 8189.342218][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 8189.342221][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 8189.342225][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 8189.342228][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 8189.342230][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 8189.342232][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 8189.342235][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 8189.342237][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8189.342240][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8189.342243][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8189.342245][    C2] PKRU: 55555554
[ 8189.342246][    C2] Call Trace:
[ 8189.342249][    C2]  <IRQ>
[ 8189.342250][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 8189.342260][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 8189.342268][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 8189.342276][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 8189.342282][    C2]  </IRQ>
[ 8189.342283][    C2]  <TASK>
[ 8189.342285][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 8189.342291][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8189.342297][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8189.342299][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8189.342302][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8189.342304][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8189.342306][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8189.342308][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8189.342310][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8189.342314][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8189.342322][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8189.342329][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8189.342334][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8189.342336][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8189.342341][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8189.342349][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8189.342353][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8189.342360][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8189.342363][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8189.342366][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8189.342372][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8189.342377][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8189.342383][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8189.342390][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8189.342398][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8189.342401][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8189.342404][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8189.342407][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8189.342410][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8189.342417][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8189.342421][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8189.342428][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8189.342432][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8189.342436][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8189.342442][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8189.342446][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8189.342452][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8189.342458][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8189.342464][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8189.342472][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8189.342476][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8189.342479][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8189.342483][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8189.342487][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8189.342494][ C2] ksys_write (fs/read_write.c:738) 
[ 8189.342497][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8189.342500][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8189.342507][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8189.342511][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8189.342514][    C2] RIP: 0033:0x7f471c970337
[ 8189.342520][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8189.342522][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8189.342525][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8189.342528][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8189.342530][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8189.342532][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8189.342534][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8216.512967][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8216.512971][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8216.512977][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8216.512989][    C2] Tainted: [L]=SOFTLOCKUP
[ 8216.512991][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8216.512993][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8216.512998][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8216.513000][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8216.513004][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8216.513006][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8216.513009][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8216.513011][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8216.513013][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8216.513015][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8216.513018][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8216.513022][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8216.513024][    C2] PKRU: 55555554
[ 8216.513026][    C2] Call Trace:
[ 8216.513028][    C2]  <TASK>
[ 8216.513030][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8216.513038][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8216.513043][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8216.513046][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8216.513050][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8216.513055][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8216.513059][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8216.513066][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8216.513069][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8216.513072][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8216.513077][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8216.513083][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8216.513089][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8216.513096][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8216.513104][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8216.513107][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8216.513111][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8216.513113][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8216.513117][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8216.513124][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8216.513127][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8216.513135][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8216.513139][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8216.513143][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8216.513150][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8216.513155][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8216.513161][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8216.513166][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8216.513173][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8216.513181][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8216.513185][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8216.513188][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8216.513192][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8216.513196][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8216.513203][ C2] ksys_write (fs/read_write.c:738) 
[ 8216.513207][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8216.513210][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8216.513217][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8216.513221][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8216.513225][    C2] RIP: 0033:0x7f471c970337
[ 8216.513231][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8216.513233][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8216.513236][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8216.513239][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8216.513241][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8216.513244][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8216.513246][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8244.512962][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8244.512966][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8244.512972][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8244.512984][    C2] Tainted: [L]=SOFTLOCKUP
[ 8244.512986][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8244.512988][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8244.512992][ C2] Code: 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d 3f e5 fd <41> 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44
All code
========
   0:	01 00                	add    %eax,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	49 c1 ee 03          	shr    $0x3,%r14
   8:	41 83 e5 07          	and    $0x7,%r13d
   c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  13:	fc ff df 
  16:	49 01 c6             	add    %rax,%r14
  19:	41 83 c5 03          	add    $0x3,%r13d
  1d:	be 04 00 00 00       	mov    $0x4,%esi
  22:	48 89 ef             	mov    %rbp,%rdi
  25:	e8 5d 3f e5 fd       	call   0xfffffffffde53f87
  2a:*	41 0f b6 06          	movzbl (%r14),%eax		<-- trapping instruction
  2e:	41 38 c5             	cmp    %al,%r13b
  31:	7c 08                	jl     0x3b
  33:	84 c0                	test   %al,%al
  35:	0f 85 8d 07 00 00    	jne    0x7c8
  3b:	8b 45 00             	mov    0x0(%rbp),%eax
  3e:	89                   	.byte 0x89
  3f:	44                   	rex.R

Code starting with the faulting instruction
===========================================
   0:	41 0f b6 06          	movzbl (%r14),%eax
   4:	41 38 c5             	cmp    %al,%r13b
   7:	7c 08                	jl     0x11
   9:	84 c0                	test   %al,%al
   b:	0f 85 8d 07 00 00    	jne    0x79e
  11:	8b 45 00             	mov    0x0(%rbp),%eax
  14:	89                   	.byte 0x89
  15:	44                   	rex.R
[ 8244.512996][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000246
[ 8244.512999][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8244.513001][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8244.513004][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8244.513006][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8244.513008][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8244.513010][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8244.513013][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8244.513016][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8244.513019][    C2] PKRU: 55555554
[ 8244.513020][    C2] Call Trace:
[ 8244.513023][    C2]  <TASK>
[ 8244.513026][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8244.513033][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8244.513038][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8244.513042][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8244.513046][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8244.513051][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8244.513055][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8244.513062][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8244.513065][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8244.513068][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8244.513073][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8244.513079][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8244.513084][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8244.513091][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8244.513098][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8244.513101][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8244.513104][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8244.513107][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8244.513110][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8244.513116][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8244.513120][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8244.513127][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8244.513131][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8244.513135][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8244.513140][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8244.513144][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8244.513150][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8244.513155][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8244.513161][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8244.513168][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8244.513172][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8244.513175][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8244.513179][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8244.513183][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8244.513190][ C2] ksys_write (fs/read_write.c:738) 
[ 8244.513194][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8244.513197][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8244.513204][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8244.513207][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8244.513211][    C2] RIP: 0033:0x7f471c970337
[ 8244.513216][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8244.513218][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8244.513221][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8244.513224][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8244.513226][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8244.513228][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8244.513230][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8256.748319][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8256.748654][    C2] rcu: 2-....: (6027456 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2667683
| [ 8256.749168][    C2] rcu: (t=6032231 jiffies g=1286133 q=105802 ncpus=4)
| [ 8256.749419][    C2] Tainted: [L]=SOFTLOCKUP
[ 8256.749420][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8256.749422][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 8256.749429][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 8256.749433][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000282
[ 8256.749436][    C2] RAX: ffff88800b85eb34 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8256.749439][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8256.749441][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8256.749442][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8256.749445][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8256.749447][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8256.749450][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8256.749453][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8256.749455][    C2] PKRU: 55555554
[ 8256.749457][    C2] Call Trace:
[ 8256.749458][    C2]  <TASK>
[ 8256.749460][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8256.749467][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8256.749474][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8256.749478][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8256.749480][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8256.749485][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8256.749491][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8256.749495][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8256.749501][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8256.749504][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8256.749507][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8256.749512][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8256.749518][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8256.749523][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8256.749529][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8256.749536][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8256.749539][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8256.749547][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8256.749550][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8256.749554][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8256.749559][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8256.749562][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8256.749570][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8256.749574][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8256.749578][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8256.749582][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8256.749587][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8256.749591][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8256.749595][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8256.749602][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8256.749608][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8256.749611][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8256.749613][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8256.749617][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8256.749621][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8256.749628][ C2] ksys_write (fs/read_write.c:738) 
[ 8256.749632][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8256.749635][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8256.749641][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8256.749644][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8256.749648][    C2] RIP: 0033:0x7f471c970337
[ 8256.749653][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8256.749655][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8256.749658][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8256.749660][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8256.749662][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8256.749665][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8256.749667][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8284.512959][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8284.512964][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8284.512969][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8284.512980][    C2] Tainted: [L]=SOFTLOCKUP
[ 8284.512981][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8284.512984][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 8284.512989][ C2] Code: 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff <5b> b8 01 00 00 00 5d 41 5c e9 3c fa 1a 02 41 bc 08 00 00 00 45 29
All code
========
   0:	00 74 f2 48          	add    %dh,0x48(%rdx,%rsi,8)
   4:	89 c2                	mov    %eax,%edx
   6:	b8 01 00 00 00       	mov    $0x1,%eax
   b:	48 85 d2             	test   %rdx,%rdx
   e:	0f 84 4c ff ff ff    	je     0xffffffffffffff60
  14:	41 83 e2 07          	and    $0x7,%r10d
  18:	49 39 d1             	cmp    %rdx,%r9
  1b:	0f 85 34 ff ff ff    	jne    0xffffffffffffff55
  21:	45 3a 11             	cmp    (%r9),%r10b
  24:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff55
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	b8 01 00 00 00       	mov    $0x1,%eax
  30:	5d                   	pop    %rbp
  31:	41 5c                	pop    %r12
  33:	e9 3c fa 1a 02       	jmp    0x21afa74
  38:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  3e:	45                   	rex.RB
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	b8 01 00 00 00       	mov    $0x1,%eax
   6:	5d                   	pop    %rbp
   7:	41 5c                	pop    %r12
   9:	e9 3c fa 1a 02       	jmp    0x21afa4a
   e:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  14:	45                   	rex.RB
  15:	29                   	.byte 0x29
[ 8284.512992][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000246
[ 8284.512995][    C2] RAX: ffffed100170bd67 RBX: ffffed100170bd67 RCX: ffffffffa2cd0f13
[ 8284.512998][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8284.513000][    C2] RBP: ffffed100170bd66 R08: 0000000000000000 R09: ffffed100170bd66
[ 8284.513002][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8284.513005][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8284.513007][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8284.513009][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8284.513013][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8284.513015][    C2] PKRU: 55555554
[ 8284.513017][    C2] Call Trace:
[ 8284.513019][    C2]  <TASK>
[ 8284.513022][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8284.513027][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8284.513034][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8284.513038][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8284.513041][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8284.513045][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8284.513050][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8284.513054][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8284.513060][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8284.513063][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8284.513066][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8284.513071][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8284.513077][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8284.513082][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8284.513088][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8284.513095][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8284.513098][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8284.513101][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8284.513104][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8284.513107][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8284.513112][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8284.513116][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8284.513124][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8284.513127][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8284.513132][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8284.513136][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8284.513140][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8284.513145][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8284.513149][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8284.513156][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8284.513161][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8284.513165][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8284.513167][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8284.513172][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8284.513175][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8284.513183][ C2] ksys_write (fs/read_write.c:738) 
[ 8284.513187][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8284.513190][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8284.513196][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8284.513199][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8284.513203][    C2] RIP: 0033:0x7f471c970337
[ 8284.513208][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8284.513210][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8284.513213][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8284.513215][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8284.513218][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8284.513220][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8284.513222][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8287.645829][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8287.646004][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 8287.646164][    C2] NMI backtrace for cpu 2
| [ 8287.646175][    C2] Tainted: [L]=SOFTLOCKUP
[ 8287.646176][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8287.646178][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 8287.646185][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 8287.646188][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 8287.646191][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 8287.646194][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 8287.646196][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 8287.646198][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 8287.646200][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 8287.646202][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8287.646204][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8287.646208][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8287.646210][    C2] PKRU: 55555554
[ 8287.646211][    C2] Call Trace:
[ 8287.646214][    C2]  <IRQ>
[ 8287.646215][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 8287.646225][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 8287.646233][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 8287.646240][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 8287.646245][    C2]  </IRQ>
[ 8287.646246][    C2]  <TASK>
[ 8287.646248][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 8287.646252][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8287.646257][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8287.646259][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8287.646262][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8287.646264][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8287.646266][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8287.646268][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8287.646271][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8287.646275][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8287.646281][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8287.646288][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8287.646292][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8287.646295][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8287.646299][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8287.646305][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8287.646309][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8287.646316][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8287.646319][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8287.646322][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8287.646327][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8287.646333][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8287.646339][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8287.646344][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8287.646351][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8287.646354][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8287.646357][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8287.646360][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8287.646363][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8287.646368][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8287.646372][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8287.646379][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8287.646383][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8287.646387][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8287.646391][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8287.646395][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8287.646399][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8287.646403][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8287.646409][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8287.646415][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8287.646418][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8287.646421][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8287.646425][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8287.646429][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8287.646436][ C2] ksys_write (fs/read_write.c:738) 
[ 8287.646439][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8287.646441][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8287.646447][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8287.646450][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8287.646453][    C2] RIP: 0033:0x7f471c970337
[ 8287.646458][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8287.646459][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8287.646463][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8287.646465][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8287.646467][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8287.646469][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8287.646472][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8312.512958][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8312.512962][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8312.512967][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8312.512978][    C2] Tainted: [L]=SOFTLOCKUP
[ 8312.512979][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8312.512981][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 8312.512986][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 8312.512990][    C2] RSP: 0018:ffffc9000029f5b8 EFLAGS: 00000282
[ 8312.512993][    C2] RAX: ffff88800b85eb34 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8312.512995][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8312.512997][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8312.513000][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8312.513002][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8312.513004][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8312.513007][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8312.513010][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8312.513013][    C2] PKRU: 55555554
[ 8312.513014][    C2] Call Trace:
[ 8312.513016][    C2]  <TASK>
[ 8312.513019][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8312.513024][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8312.513031][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8312.513035][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8312.513038][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8312.513041][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8312.513046][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8312.513050][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8312.513056][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8312.513060][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8312.513063][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8312.513068][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8312.513074][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8312.513079][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8312.513085][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8312.513092][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8312.513095][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8312.513098][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8312.513101][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8312.513104][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8312.513110][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8312.513113][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8312.513121][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8312.513125][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8312.513129][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8312.513133][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8312.513137][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8312.513142][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8312.513146][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8312.513152][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8312.513158][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8312.513161][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8312.513164][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8312.513168][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8312.513172][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8312.513179][ C2] ksys_write (fs/read_write.c:738) 
[ 8312.513182][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8312.513185][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8312.513191][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8312.513194][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8312.513197][    C2] RIP: 0033:0x7f471c970337
[ 8312.513202][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8312.513203][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8312.513207][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8312.513209][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8312.513211][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8312.513214][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8312.513216][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8334.751319][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8334.751664][    C2] rcu: 2-....: (6105394 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2706662
| [ 8334.752058][    C2] rcu: (t=6110234 jiffies g=1286133 q=107237 ncpus=4)
| [ 8334.752412][    C2] Tainted: [L]=SOFTLOCKUP
[ 8334.752414][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8334.752416][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8334.752422][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8334.752425][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8334.752428][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8334.752430][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8334.752433][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8334.752435][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8334.752437][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8334.752440][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8334.752442][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8334.752446][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8334.752448][    C2] PKRU: 55555554
[ 8334.752450][    C2] Call Trace:
[ 8334.752451][    C2]  <TASK>
[ 8334.752453][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8334.752461][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8334.752465][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8334.752468][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8334.752472][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8334.752478][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8334.752482][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8334.752488][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8334.752491][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8334.752495][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8334.752500][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8334.752505][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8334.752511][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8334.752516][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8334.752523][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8334.752526][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8334.752529][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8334.752532][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8334.752535][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8334.752539][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8334.752543][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8334.752550][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8334.752554][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8334.752558][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8334.752563][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8334.752567][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8334.752571][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8334.752575][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8334.752581][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8334.752586][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8334.752589][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8334.752592][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8334.752596][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8334.752600][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8334.752607][ C2] ksys_write (fs/read_write.c:738) 
[ 8334.752611][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8334.752614][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8334.752620][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8334.752623][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8334.752626][    C2] RIP: 0033:0x7f471c970337
[ 8334.752631][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8334.752633][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8334.752636][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8334.752638][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8334.752640][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8334.752642][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8334.752644][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8360.512958][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8360.512962][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8360.512966][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8360.512977][    C2] Tainted: [L]=SOFTLOCKUP
[ 8360.512978][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8360.512981][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 8360.512986][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 8360.512989][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 8360.512992][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8360.512994][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8360.512996][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8360.512999][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8360.513001][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8360.513003][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8360.513006][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8360.513009][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8360.513011][    C2] PKRU: 55555554
[ 8360.513013][    C2] Call Trace:
[ 8360.513015][    C2]  <TASK>
[ 8360.513017][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8360.513022][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8360.513030][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8360.513034][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8360.513036][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8360.513040][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8360.513044][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8360.513049][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8360.513055][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8360.513058][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8360.513061][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8360.513066][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8360.513072][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8360.513077][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8360.513083][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8360.513090][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8360.513093][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8360.513096][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8360.513099][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8360.513102][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8360.513107][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8360.513111][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8360.513119][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8360.513122][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8360.513127][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8360.513131][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8360.513135][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8360.513139][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8360.513143][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8360.513150][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8360.513155][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8360.513159][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8360.513162][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8360.513166][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8360.513169][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8360.513177][ C2] ksys_write (fs/read_write.c:738) 
[ 8360.513180][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8360.513183][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8360.513189][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8360.513192][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8360.513196][    C2] RIP: 0033:0x7f471c970337
[ 8360.513200][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8360.513202][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8360.513206][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8360.513208][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8360.513210][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8360.513212][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8360.513214][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8385.949842][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8385.950022][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 8385.950175][    C2] NMI backtrace for cpu 2
| [ 8385.950186][    C2] Tainted: [L]=SOFTLOCKUP
[ 8385.950187][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8385.950189][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 8385.950196][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 8385.950200][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 8385.950203][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 8385.950206][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 8385.950208][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 8385.950210][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 8385.950212][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 8385.950214][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8385.950217][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8385.950221][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8385.950223][    C2] PKRU: 55555554
[ 8385.950225][    C2] Call Trace:
[ 8385.950227][    C2]  <IRQ>
[ 8385.950229][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 8385.950238][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 8385.950246][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 8385.950252][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 8385.950257][    C2]  </IRQ>
[ 8385.950259][    C2]  <TASK>
[ 8385.950261][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 8385.950264][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8385.950269][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8385.950272][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8385.950275][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8385.950277][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8385.950279][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8385.950281][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8385.950283][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8385.950287][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8385.950294][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8385.950301][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8385.950304][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8385.950307][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8385.950310][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8385.950317][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8385.950321][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8385.950327][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8385.950330][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8385.950333][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8385.950338][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8385.950344][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8385.950349][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8385.950354][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8385.950361][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8385.950364][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8385.950367][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8385.950370][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8385.950373][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8385.950378][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8385.950381][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8385.950388][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8385.950392][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8385.950396][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8385.950400][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8385.950404][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8385.950408][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8385.950412][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8385.950419][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8385.950424][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8385.950427][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8385.950430][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8385.950434][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8385.950438][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8385.950445][ C2] ksys_write (fs/read_write.c:738) 
[ 8385.950448][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8385.950451][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8385.950456][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8385.950460][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8385.950463][    C2] RIP: 0033:0x7f471c970337
[ 8385.950467][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8385.950469][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8385.950471][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8385.950474][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8385.950476][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8385.950478][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8385.950480][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8412.512959][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8412.512963][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8412.512967][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8412.512978][    C2] Tainted: [L]=SOFTLOCKUP
[ 8412.512980][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8412.512981][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8412.512986][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8412.512990][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8412.512992][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8412.512995][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8412.512997][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8412.512999][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8412.513001][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8412.513004][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8412.513007][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8412.513011][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8412.513013][    C2] PKRU: 55555554
[ 8412.513014][    C2] Call Trace:
[ 8412.513016][    C2]  <TASK>
[ 8412.513019][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8412.513027][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8412.513030][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8412.513033][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8412.513037][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8412.513042][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8412.513046][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8412.513052][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8412.513055][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8412.513058][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8412.513063][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8412.513069][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8412.513074][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8412.513080][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8412.513086][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8412.513089][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8412.513092][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8412.513095][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8412.513098][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8412.513103][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8412.513107][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8412.513115][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8412.513119][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8412.513123][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8412.513127][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8412.513131][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8412.513135][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8412.513139][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8412.513146][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8412.513151][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8412.513155][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8412.513158][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8412.513162][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8412.513166][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8412.513173][ C2] ksys_write (fs/read_write.c:738) 
[ 8412.513176][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8412.513179][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8412.513185][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8412.513189][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8412.513192][    C2] RIP: 0033:0x7f471c970337
[ 8412.513196][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8412.513198][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8412.513201][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8412.513203][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8412.513205][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8412.513208][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8412.513210][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8412.754318][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8412.754635][    C2] rcu: 2-....: (6183332 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2745639
| [ 8412.755145][    C2] rcu: (t=6188237 jiffies g=1286133 q=108666 ncpus=4)
| [ 8412.755382][    C2] Tainted: [L]=SOFTLOCKUP
[ 8412.755384][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8412.755385][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:31) 
[ 8412.755391][ C2] Code: 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
   0:	41 5c                	pop    %r12
   2:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fb2
   7:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
  2a:*	89 f6                	mov    %esi,%esi		<-- trapping instruction
  2c:	31 d2                	xor    %edx,%edx
  2e:	e9 4f f0 ff ff       	jmp    0xfffffffffffff082
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 f6                	mov    %esi,%esi
   2:	31 d2                	xor    %edx,%edx
   4:	e9 4f f0 ff ff       	jmp    0xfffffffffffff058
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 8412.755394][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 8412.755397][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8412.755400][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8412.755402][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8412.755404][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8412.755407][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8412.755409][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8412.755411][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8412.755415][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8412.755417][    C2] PKRU: 55555554
[ 8412.755418][    C2] Call Trace:
[ 8412.755419][    C2]  <TASK>
[ 8412.755421][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8412.755427][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8412.755434][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8412.755437][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8412.755440][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8412.755443][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8412.755448][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8412.755452][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8412.755458][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8412.755461][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8412.755464][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8412.755469][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8412.755475][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8412.755480][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8412.755485][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8412.755492][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8412.755495][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8412.755498][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8412.755501][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8412.755504][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8412.755509][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8412.755513][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8412.755520][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8412.755524][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8412.755528][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8412.755532][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8412.755536][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8412.755540][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8412.755544][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8412.755551][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8412.755556][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8412.755559][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8412.755562][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8412.755566][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8412.755570][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8412.755577][ C2] ksys_write (fs/read_write.c:738) 
[ 8412.755580][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8412.755583][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8412.755588][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8412.755592][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8412.755595][    C2] RIP: 0033:0x7f471c970337
[ 8412.755600][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8412.755601][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8412.755604][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8412.755606][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8412.755608][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8412.755610][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8412.755612][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8440.512958][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8440.512962][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8440.512967][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8440.512977][    C2] Tainted: [L]=SOFTLOCKUP
[ 8440.512979][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8440.512981][ C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 8440.512986][ C2] Code: ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 <48> 89 e8 49 8d 59 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e c0 00 00
All code
========
   0:	ff                   	(bad)
   1:	ff 48 39             	decl   0x39(%rax)
   4:	c7                   	(bad)
   5:	76 dd                	jbe    0xffffffffffffffe4
   7:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   c:	48 89 fd             	mov    %rdi,%rbp
   f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  16:	fc ff df 
  19:	4d 89 d1             	mov    %r10,%r9
  1c:	48 c1 ed 03          	shr    $0x3,%rbp
  20:	49 c1 e9 03          	shr    $0x3,%r9
  24:	48 01 c5             	add    %rax,%rbp
  27:	49 01 c1             	add    %rax,%r9
  2a:*	48 89 e8             	mov    %rbp,%rax		<-- trapping instruction
  2d:	49 8d 59 01          	lea    0x1(%r9),%rbx
  31:	48 89 da             	mov    %rbx,%rdx
  34:	48 29 ea             	sub    %rbp,%rdx
  37:	48 83 fa 10          	cmp    $0x10,%rdx
  3b:	0f                   	.byte 0xf
  3c:	8e c0                	mov    %eax,%es
	...

Code starting with the faulting instruction
===========================================
   0:	48 89 e8             	mov    %rbp,%rax
   3:	49 8d 59 01          	lea    0x1(%r9),%rbx
   7:	48 89 da             	mov    %rbx,%rdx
   a:	48 29 ea             	sub    %rbp,%rdx
   d:	48 83 fa 10          	cmp    $0x10,%rdx
  11:	0f                   	.byte 0xf
  12:	8e c0                	mov    %eax,%es
	...
[ 8440.512989][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000286
[ 8440.512992][    C2] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8440.512994][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8440.512997][    C2] RBP: ffffed100170bd66 R08: 0000000000000000 R09: ffffed100170bd66
[ 8440.512999][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8440.513001][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8440.513003][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8440.513006][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8440.513009][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8440.513011][    C2] PKRU: 55555554
[ 8440.513012][    C2] Call Trace:
[ 8440.513014][    C2]  <TASK>
[ 8440.513017][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8440.513022][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8440.513030][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8440.513034][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8440.513037][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8440.513040][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8440.513045][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8440.513049][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8440.513055][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8440.513058][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8440.513061][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8440.513066][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8440.513072][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8440.513077][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8440.513083][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8440.513090][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8440.513092][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8440.513096][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8440.513099][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8440.513102][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8440.513107][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8440.513110][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8440.513118][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8440.513122][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8440.513126][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8440.513130][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8440.513134][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8440.513139][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8440.513143][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8440.513150][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8440.513155][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8440.513158][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8440.513161][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8440.513165][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8440.513169][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8440.513176][ C2] ksys_write (fs/read_write.c:738) 
[ 8440.513179][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8440.513182][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8440.513188][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8440.513192][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8440.513195][    C2] RIP: 0033:0x7f471c970337
[ 8440.513199][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8440.513201][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8440.513204][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8440.513207][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8440.513209][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8440.513211][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8440.513213][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8468.512957][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8468.512961][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8468.512965][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8468.512976][    C2] Tainted: [L]=SOFTLOCKUP
[ 8468.512977][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8468.512979][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8468.512984][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8468.512987][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8468.512990][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8468.512992][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8468.512995][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8468.512997][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8468.512999][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8468.513001][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8468.513005][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8468.513008][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8468.513010][    C2] PKRU: 55555554
[ 8468.513012][    C2] Call Trace:
[ 8468.513014][    C2]  <TASK>
[ 8468.513017][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8468.513024][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8468.513028][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8468.513031][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8468.513034][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8468.513039][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8468.513043][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8468.513049][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8468.513052][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8468.513055][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8468.513060][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8468.513066][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8468.513072][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8468.513077][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8468.513084][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8468.513087][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8468.513090][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8468.513093][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8468.513096][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8468.513101][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8468.513105][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8468.513112][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8468.513116][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8468.513120][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8468.513124][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8468.513129][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8468.513133][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8468.513137][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8468.513143][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8468.513149][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8468.513152][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8468.513155][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8468.513159][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8468.513163][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8468.513171][ C2] ksys_write (fs/read_write.c:738) 
[ 8468.513174][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8468.513177][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8468.513183][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8468.513186][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8468.513190][    C2] RIP: 0033:0x7f471c970337
[ 8468.513195][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8468.513197][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8468.513200][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8468.513202][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8468.513204][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8468.513206][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8468.513208][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8484.253756][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8484.253932][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 8484.254165][    C2] NMI backtrace for cpu 2
| [ 8484.254176][    C2] Tainted: [L]=SOFTLOCKUP
[ 8484.254177][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8484.254179][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8484.254185][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8484.254188][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8484.254192][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8484.254194][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8484.254197][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8484.254199][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8484.254201][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8484.254203][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8484.254206][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8484.254209][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8484.254211][    C2] PKRU: 55555554
[ 8484.254212][    C2] Call Trace:
[ 8484.254215][    C2]  <TASK>
[ 8484.254217][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8484.254225][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8484.254229][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8484.254232][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8484.254235][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8484.254241][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8484.254245][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8484.254251][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8484.254254][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8484.254257][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8484.254262][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8484.254268][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8484.254273][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8484.254278][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8484.254285][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8484.254288][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8484.254291][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8484.254294][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8484.254297][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8484.254302][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8484.254306][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8484.254313][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8484.254318][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8484.254323][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8484.254327][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8484.254331][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8484.254335][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8484.254339][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8484.254346][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8484.254351][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8484.254354][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8484.254357][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8484.254361][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8484.254365][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8484.254372][ C2] ksys_write (fs/read_write.c:738) 
[ 8484.254375][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8484.254378][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8484.254383][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8484.254387][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8484.254390][    C2] RIP: 0033:0x7f471c970337
[ 8484.254394][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8484.254396][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8484.254400][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8484.254402][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8484.254404][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8484.254406][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8484.254408][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8490.757318][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8490.757645][    C2] rcu: 2-....: (6261274 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2784619
| [ 8490.758148][    C2] rcu: (t=6266240 jiffies g=1286133 q=110017 ncpus=4)
| [ 8490.758398][    C2] Tainted: [L]=SOFTLOCKUP
[ 8490.758399][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8490.758401][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8490.758407][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8490.758410][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8490.758413][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8490.758415][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8490.758418][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8490.758420][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8490.758422][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8490.758424][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8490.758427][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8490.758430][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8490.758433][    C2] PKRU: 55555554
[ 8490.758434][    C2] Call Trace:
[ 8490.758435][    C2]  <TASK>
[ 8490.758437][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8490.758445][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8490.758449][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8490.758451][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8490.758455][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8490.758460][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8490.758464][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8490.758470][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8490.758473][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8490.758476][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8490.758481][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8490.758486][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8490.758492][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8490.758497][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8490.758504][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8490.758507][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8490.758510][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8490.758513][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8490.758516][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8490.758521][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8490.758524][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8490.758532][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8490.758535][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8490.758539][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8490.758544][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8490.758548][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8490.758552][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8490.758556][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8490.758562][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8490.758568][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8490.758571][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8490.758574][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8490.758578][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8490.758581][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8490.758589][ C2] ksys_write (fs/read_write.c:738) 
[ 8490.758592][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8490.758595][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8490.758600][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8490.758604][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8490.758607][    C2] RIP: 0033:0x7f471c970337
[ 8490.758611][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8490.758613][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8490.758615][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8490.758618][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8490.758620][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8490.758622][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8490.758623][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8516.512957][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8516.512961][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8516.512966][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8516.512976][    C2] Tainted: [L]=SOFTLOCKUP
[ 8516.512978][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8516.512980][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:103 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 8516.512984][ C2] Code: 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d 59 01 48 89 da <48> 29 ea 48 83 fa 10 0f 8e c0 00 00 00 41 89 eb 41 83 e3 07 75 7d
All code
========
   0:	37                   	(bad)
   1:	ff 48 89             	decl   -0x77(%rax)
   4:	fd                   	std
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	4d 89 d1             	mov    %r10,%r9
  12:	48 c1 ed 03          	shr    $0x3,%rbp
  16:	49 c1 e9 03          	shr    $0x3,%r9
  1a:	48 01 c5             	add    %rax,%rbp
  1d:	49 01 c1             	add    %rax,%r9
  20:	48 89 e8             	mov    %rbp,%rax
  23:	49 8d 59 01          	lea    0x1(%r9),%rbx
  27:	48 89 da             	mov    %rbx,%rdx
  2a:*	48 29 ea             	sub    %rbp,%rdx		<-- trapping instruction
  2d:	48 83 fa 10          	cmp    $0x10,%rdx
  31:	0f 8e c0 00 00 00    	jle    0xf7
  37:	41 89 eb             	mov    %ebp,%r11d
  3a:	41 83 e3 07          	and    $0x7,%r11d
  3e:	75 7d                	jne    0xbd

Code starting with the faulting instruction
===========================================
   0:	48 29 ea             	sub    %rbp,%rdx
   3:	48 83 fa 10          	cmp    $0x10,%rdx
   7:	0f 8e c0 00 00 00    	jle    0xcd
   d:	41 89 eb             	mov    %ebp,%r11d
  10:	41 83 e3 07          	and    $0x7,%r11d
  14:	75 7d                	jne    0x93
[ 8516.512988][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000286
[ 8516.512991][    C2] RAX: ffffed100170bd66 RBX: ffffed100170bd67 RCX: ffffffffa2cd0f13
[ 8516.512993][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8516.512996][    C2] RBP: ffffed100170bd66 R08: 0000000000000000 R09: ffffed100170bd66
[ 8516.512998][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8516.513000][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8516.513002][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8516.513004][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8516.513008][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8516.513010][    C2] PKRU: 55555554
[ 8516.513012][    C2] Call Trace:
[ 8516.513014][    C2]  <TASK>
[ 8516.513016][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8516.513022][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8516.513029][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8516.513033][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8516.513036][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8516.513040][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8516.513044][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8516.513049][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8516.513055][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8516.513058][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8516.513062][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8516.513067][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8516.513072][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8516.513078][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8516.513083][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8516.513090][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8516.513093][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8516.513096][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8516.513099][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8516.513102][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8516.513107][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8516.513111][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8516.513118][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8516.513122][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8516.513126][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8516.513131][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8516.513135][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8516.513139][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8516.513143][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8516.513150][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8516.513155][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8516.513158][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8516.513161][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8516.513165][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8516.513169][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8516.513176][ C2] ksys_write (fs/read_write.c:738) 
[ 8516.513180][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8516.513183][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8516.513189][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8516.513193][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8516.513196][    C2] RIP: 0033:0x7f471c970337
[ 8516.513200][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8516.513202][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8516.513205][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8516.513207][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8516.513210][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8516.513212][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8516.513214][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8544.512958][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8544.512962][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8544.512966][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8544.512977][    C2] Tainted: [L]=SOFTLOCKUP
[ 8544.512978][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8544.512980][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8544.512985][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8544.512988][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8544.512991][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8544.512993][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8544.512996][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8544.512998][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8544.513000][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8544.513002][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8544.513005][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8544.513009][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8544.513011][    C2] PKRU: 55555554
[ 8544.513013][    C2] Call Trace:
[ 8544.513015][    C2]  <TASK>
[ 8544.513017][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8544.513025][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8544.513030][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8544.513032][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8544.513036][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8544.513041][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8544.513044][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8544.513051][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8544.513054][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8544.513057][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8544.513062][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8544.513068][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8544.513073][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8544.513079][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8544.513086][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8544.513089][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8544.513092][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8544.513095][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8544.513098][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8544.513103][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8544.513107][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8544.513114][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8544.513118][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8544.513122][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8544.513126][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8544.513130][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8544.513134][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8544.513139][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8544.513146][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8544.513151][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8544.513154][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8544.513157][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8544.513161][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8544.513165][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8544.513173][ C2] ksys_write (fs/read_write.c:738) 
[ 8544.513176][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8544.513179][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8544.513185][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8544.513188][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8544.513191][    C2] RIP: 0033:0x7f471c970337
[ 8544.513196][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8544.513198][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8544.513200][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8544.513203][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8544.513205][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8544.513207][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8544.513209][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8568.760318][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8568.760664][    C2] rcu: 2-....: (6339230 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2823604
| [ 8568.761161][    C2] rcu: (t=6344243 jiffies g=1286133 q=111043 ncpus=4)
| [ 8568.761395][    C2] Tainted: [L]=SOFTLOCKUP
[ 8568.761396][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8568.761398][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8568.761404][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8568.761408][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8568.761411][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8568.761413][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8568.761416][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8568.761418][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8568.761420][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8568.761422][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8568.761424][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8568.761428][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8568.761430][    C2] PKRU: 55555554
[ 8568.761432][    C2] Call Trace:
[ 8568.761433][    C2]  <TASK>
[ 8568.761436][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8568.761443][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8568.761447][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8568.761450][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8568.761454][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8568.761459][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8568.761463][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8568.761469][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8568.761472][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8568.761475][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8568.761480][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8568.761486][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8568.761491][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8568.761497][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8568.761504][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8568.761507][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8568.761510][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8568.761513][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8568.761516][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8568.761521][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8568.761524][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8568.761532][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8568.761535][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8568.761539][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8568.761543][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8568.761547][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8568.761552][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8568.761555][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8568.761562][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8568.761568][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8568.761571][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8568.761574][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8568.761578][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8568.761582][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8568.761589][ C2] ksys_write (fs/read_write.c:738) 
[ 8568.761592][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8568.761595][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8568.761600][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8568.761604][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8568.761607][    C2] RIP: 0033:0x7f471c970337
[ 8568.761611][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8568.761613][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8568.761616][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8568.761618][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8568.761621][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8568.761623][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8568.761625][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8582.557751][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8582.557927][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 8582.558159][    C2] NMI backtrace for cpu 2
| [ 8582.558170][    C2] Tainted: [L]=SOFTLOCKUP
[ 8582.558171][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8582.558173][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 8582.558180][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 8582.558183][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 8582.558186][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 8582.558188][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 8582.558191][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 8582.558193][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 8582.558195][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 8582.558197][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8582.558200][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8582.558203][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8582.558205][    C2] PKRU: 55555554
[ 8582.558207][    C2] Call Trace:
[ 8582.558209][    C2]  <IRQ>
[ 8582.558211][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 8582.558220][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 8582.558227][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 8582.558234][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 8582.558238][    C2]  </IRQ>
[ 8582.558240][    C2]  <TASK>
[ 8582.558242][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 8582.558245][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8582.558250][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8582.558252][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8582.558255][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8582.558258][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8582.558260][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8582.558262][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8582.558264][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8582.558268][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8582.558274][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8582.558281][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8582.558285][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8582.558288][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8582.558291][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8582.558296][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8582.558300][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8582.558306][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8582.558309][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8582.558312][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8582.558318][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8582.558325][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8582.558330][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8582.558335][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8582.558341][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8582.558344][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8582.558348][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8582.558350][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8582.558353][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8582.558358][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8582.558362][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8582.558369][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8582.558373][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8582.558377][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8582.558381][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8582.558385][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8582.558389][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8582.558393][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8582.558400][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8582.558405][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8582.558408][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8582.558411][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8582.558415][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8582.558419][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8582.558426][ C2] ksys_write (fs/read_write.c:738) 
[ 8582.558430][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8582.558433][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8582.558438][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8582.558442][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8582.558445][    C2] RIP: 0033:0x7f471c970337
[ 8582.558449][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8582.558451][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8582.558454][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8582.558456][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8582.558458][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8582.558460][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8582.558462][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8608.512959][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8608.512963][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8608.512968][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8608.512978][    C2] Tainted: [L]=SOFTLOCKUP
[ 8608.512980][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8608.512982][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8608.512986][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8608.512989][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8608.512992][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8608.512995][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8608.512997][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8608.512999][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8608.513001][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8608.513004][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8608.513007][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8608.513010][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8608.513012][    C2] PKRU: 55555554
[ 8608.513014][    C2] Call Trace:
[ 8608.513016][    C2]  <TASK>
[ 8608.513019][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8608.513026][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8608.513030][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8608.513033][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8608.513036][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8608.513041][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8608.513045][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8608.513051][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8608.513054][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8608.513057][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8608.513062][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8608.513069][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8608.513074][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8608.513079][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8608.513086][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8608.513089][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8608.513093][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8608.513095][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8608.513098][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8608.513104][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8608.513107][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8608.513115][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8608.513118][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8608.513122][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8608.513126][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8608.513130][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8608.513134][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8608.513138][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8608.513145][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8608.513150][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8608.513154][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8608.513157][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8608.513161][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8608.513165][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8608.513172][ C2] ksys_write (fs/read_write.c:738) 
[ 8608.513176][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8608.513178][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8608.513184][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8608.513188][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8608.513191][    C2] RIP: 0033:0x7f471c970337
[ 8608.513196][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8608.513197][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8608.513200][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8608.513202][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8608.513205][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8608.513207][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8608.513209][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8636.512957][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8636.512961][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8636.512966][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8636.512977][    C2] Tainted: [L]=SOFTLOCKUP
[ 8636.512979][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8636.512981][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8636.512985][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8636.512989][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8636.512992][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8636.512994][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8636.512997][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8636.512999][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8636.513001][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8636.513004][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8636.513006][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8636.513010][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8636.513013][    C2] PKRU: 55555554
[ 8636.513014][    C2] Call Trace:
[ 8636.513016][    C2]  <TASK>
[ 8636.513019][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8636.513027][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8636.513031][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8636.513034][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8636.513037][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8636.513042][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8636.513046][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8636.513052][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8636.513056][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8636.513058][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8636.513063][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8636.513069][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8636.513074][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8636.513080][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8636.513087][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8636.513090][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8636.513093][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8636.513096][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8636.513099][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8636.513104][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8636.513107][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8636.513115][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8636.513118][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8636.513122][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8636.513127][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8636.513131][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8636.513135][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8636.513139][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8636.513145][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8636.513151][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8636.513155][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8636.513157][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8636.513162][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8636.513166][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8636.513173][ C2] ksys_write (fs/read_write.c:738) 
[ 8636.513176][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8636.513179][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8636.513185][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8636.513189][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8636.513192][    C2] RIP: 0033:0x7f471c970337
[ 8636.513197][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8636.513199][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8636.513202][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8636.513204][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8636.513206][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8636.513209][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8636.513211][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8646.763319][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8646.763626][    C2] rcu: 2-....: (6417168 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2862582
| [ 8646.764134][    C2] rcu: (t=6422246 jiffies g=1286133 q=112469 ncpus=4)
| [ 8646.764368][    C2] Tainted: [L]=SOFTLOCKUP
[ 8646.764370][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8646.764372][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8646.764378][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8646.764381][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8646.764384][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8646.764387][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8646.764389][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8646.764392][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8646.764394][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8646.764396][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8646.764398][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8646.764402][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8646.764404][    C2] PKRU: 55555554
[ 8646.764405][    C2] Call Trace:
[ 8646.764407][    C2]  <TASK>
[ 8646.764409][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8646.764417][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8646.764420][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8646.764423][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8646.764426][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8646.764431][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8646.764435][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8646.764441][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8646.764444][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8646.764447][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8646.764452][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8646.764458][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8646.764464][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8646.764469][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8646.764476][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8646.764480][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8646.764483][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8646.764486][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8646.764489][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8646.764493][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8646.764497][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8646.764504][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8646.764508][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8646.764512][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8646.764516][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8646.764520][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8646.764524][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8646.764528][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8646.764535][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8646.764540][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8646.764544][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8646.764547][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8646.764551][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8646.764555][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8646.764562][ C2] ksys_write (fs/read_write.c:738) 
[ 8646.764565][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8646.764568][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8646.764573][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8646.764577][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8646.764580][    C2] RIP: 0033:0x7f471c970337
[ 8646.764584][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8646.764586][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8646.764589][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8646.764591][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8646.764593][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8646.764595][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8646.764597][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8672.512959][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8672.512963][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8672.512967][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8672.512978][    C2] Tainted: [L]=SOFTLOCKUP
[ 8672.512980][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8672.512982][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8672.512987][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8672.512991][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8672.512994][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8672.512996][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8672.512998][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8672.513000][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8672.513003][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8672.513005][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8672.513008][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8672.513012][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8672.513014][    C2] PKRU: 55555554
[ 8672.513015][    C2] Call Trace:
[ 8672.513017][    C2]  <TASK>
[ 8672.513020][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8672.513028][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8672.513032][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8672.513035][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8672.513039][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8672.513043][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8672.513047][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8672.513054][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8672.513057][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8672.513060][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8672.513065][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8672.513071][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8672.513076][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8672.513081][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8672.513088][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8672.513091][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8672.513094][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8672.513097][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8672.513100][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8672.513105][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8672.513109][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8672.513116][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8672.513120][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8672.513124][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8672.513129][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8672.513133][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8672.513137][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8672.513141][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8672.513148][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8672.513154][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8672.513157][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8672.513160][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8672.513164][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8672.513168][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8672.513175][ C2] ksys_write (fs/read_write.c:738) 
[ 8672.513178][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8672.513181][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8672.513187][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8672.513191][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8672.513194][    C2] RIP: 0033:0x7f471c970337
[ 8672.513199][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8672.513200][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8672.513203][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8672.513206][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8672.513208][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8672.513210][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8672.513212][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8680.861755][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8680.862011][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 8680.862163][    C2] NMI backtrace for cpu 2
| [ 8680.862173][    C2] Tainted: [L]=SOFTLOCKUP
[ 8680.862175][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8680.862177][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 8680.862183][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 8680.862187][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 8680.862190][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 8680.862192][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 8680.862195][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 8680.862197][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 8680.862199][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 8680.862201][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8680.862204][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8680.862207][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8680.862210][    C2] PKRU: 55555554
[ 8680.862211][    C2] Call Trace:
[ 8680.862213][    C2]  <IRQ>
[ 8680.862214][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 8680.862223][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 8680.862230][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 8680.862236][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 8680.862240][    C2]  </IRQ>
[ 8680.862241][    C2]  <TASK>
[ 8680.862243][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 8680.862247][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8680.862252][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8680.862255][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8680.862257][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8680.862259][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8680.862261][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8680.862264][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8680.862266][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8680.862270][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8680.862276][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8680.862283][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8680.862287][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8680.862289][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8680.862293][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8680.862298][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8680.862301][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8680.862308][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8680.862310][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8680.862314][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8680.862320][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8680.862326][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8680.862331][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8680.862336][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8680.862343][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8680.862346][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8680.862349][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8680.862352][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8680.862355][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8680.862360][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8680.862363][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8680.862370][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8680.862374][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8680.862378][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8680.862382][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8680.862386][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8680.862390][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8680.862394][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8680.862400][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8680.862406][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8680.862409][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8680.862412][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8680.862416][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8680.862420][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8680.862427][ C2] ksys_write (fs/read_write.c:738) 
[ 8680.862431][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8680.862433][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8680.862439][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8680.862442][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8680.862445][    C2] RIP: 0033:0x7f471c970337
[ 8680.862450][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8680.862451][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8680.862454][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8680.862456][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8680.862459][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8680.862461][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8680.862463][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8708.512978][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8708.512983][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8708.512992][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8708.513007][    C2] Tainted: [L]=SOFTLOCKUP
[ 8708.513009][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8708.513011][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8708.513017][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8708.513020][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8708.513024][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8708.513027][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8708.513029][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8708.513032][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8708.513034][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8708.513036][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8708.513039][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8708.513043][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8708.513045][    C2] PKRU: 55555554
[ 8708.513046][    C2] Call Trace:
[ 8708.513050][    C2]  <TASK>
[ 8708.513054][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8708.513062][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8708.513068][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8708.513071][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8708.513077][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8708.513081][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8708.513085][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8708.513092][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8708.513095][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8708.513098][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8708.513103][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8708.513108][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8708.513114][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8708.513123][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8708.513130][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8708.513133][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8708.513136][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8708.513139][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8708.513142][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8708.513150][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8708.513154][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8708.513161][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8708.513165][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8708.513169][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8708.513176][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8708.513180][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8708.513188][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8708.513194][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8708.513201][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8708.513209][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8708.513213][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8708.513216][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8708.513220][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8708.513224][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8708.513231][ C2] ksys_write (fs/read_write.c:738) 
[ 8708.513234][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8708.513237][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8708.513245][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8708.513250][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8708.513255][    C2] RIP: 0033:0x7f471c970337
[ 8708.513266][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8708.513267][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8708.513271][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8708.513273][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8708.513276][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8708.513278][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8708.513280][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8724.766323][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8724.766807][    C2] rcu: 2-....: (6495104 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2901499
| [ 8724.767459][    C2] rcu: (t=6500249 jiffies g=1286133 q=113895 ncpus=4)
| [ 8724.767781][    C2] Tainted: [L]=SOFTLOCKUP
[ 8724.767783][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8724.767785][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8724.767799][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8724.767802][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8724.767806][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8724.767809][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8724.767811][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8724.767814][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8724.767816][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8724.767818][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8724.767821][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8724.767824][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8724.767827][    C2] PKRU: 55555554
[ 8724.767828][    C2] Call Trace:
[ 8724.767829][    C2]  <TASK>
[ 8724.767831][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8724.767839][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8724.767846][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8724.767848][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8724.767854][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8724.767863][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8724.767866][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8724.767872][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8724.767875][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8724.767878][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8724.767883][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8724.767888][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8724.767893][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8724.767903][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8724.767911][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8724.767913][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8724.767917][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8724.767919][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8724.767922][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8724.767930][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8724.767933][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8724.767940][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8724.767944][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8724.767948][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8724.767955][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8724.767959][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8724.767966][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8724.767972][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8724.767978][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8724.767986][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8724.767989][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8724.767992][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8724.767996][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8724.768000][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8724.768007][ C2] ksys_write (fs/read_write.c:738) 
[ 8724.768010][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8724.768012][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8724.768021][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8724.768026][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8724.768031][    C2] RIP: 0033:0x7f471c970337
[ 8724.768040][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8724.768042][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8724.768045][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8724.768047][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8724.768050][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8724.768051][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8724.768054][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8752.512974][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8752.512978][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8752.512984][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8752.512997][    C2] Tainted: [L]=SOFTLOCKUP
[ 8752.512998][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8752.513001][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8752.513006][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8752.513009][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8752.513013][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8752.513015][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8752.513018][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8752.513020][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8752.513022][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8752.513024][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8752.513027][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8752.513031][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8752.513033][    C2] PKRU: 55555554
[ 8752.513034][    C2] Call Trace:
[ 8752.513038][    C2]  <TASK>
[ 8752.513042][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8752.513049][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8752.513054][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8752.513057][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8752.513061][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8752.513065][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8752.513069][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8752.513076][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8752.513079][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8752.513081][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8752.513086][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8752.513092][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8752.513097][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8752.513104][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8752.513112][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8752.513114][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8752.513117][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8752.513120][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8752.513123][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8752.513129][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8752.513133][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8752.513140][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8752.513144][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8752.513147][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8752.513153][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8752.513157][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8752.513162][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8752.513167][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8752.513173][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8752.513179][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8752.513183][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8752.513185][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8752.513189][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8752.513193][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8752.513200][ C2] ksys_write (fs/read_write.c:738) 
[ 8752.513204][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8752.513207][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8752.513213][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8752.513217][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8752.513221][    C2] RIP: 0033:0x7f471c970337
[ 8752.513229][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8752.513230][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8752.513233][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8752.513236][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8752.513238][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8752.513240][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8752.513242][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8779.165932][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8779.166192][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 8779.166381][    C2] NMI backtrace for cpu 2
| [ 8779.166399][    C2] Tainted: [L]=SOFTLOCKUP
[ 8779.166400][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8779.166403][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8779.166414][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8779.166417][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8779.166421][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8779.166424][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8779.166426][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8779.166429][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8779.166431][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8779.166433][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8779.166435][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8779.166439][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8779.166441][    C2] PKRU: 55555554
[ 8779.166442][    C2] Call Trace:
[ 8779.166445][    C2]  <TASK>
[ 8779.166449][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8779.166457][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8779.166462][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8779.166465][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8779.166469][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8779.166476][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8779.166480][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8779.166485][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8779.166488][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8779.166491][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8779.166496][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8779.166501][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8779.166507][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8779.166514][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8779.166521][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8779.166524][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8779.166527][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8779.166530][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8779.166532][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8779.166539][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8779.166543][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8779.166550][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8779.166553][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8779.166557][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8779.166564][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8779.166568][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8779.166572][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8779.166577][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8779.166583][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8779.166590][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8779.166594][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8779.166596][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8779.166600][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8779.166604][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8779.166610][ C2] ksys_write (fs/read_write.c:738) 
[ 8779.166614][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8779.166616][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8779.166623][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8779.166627][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8779.166631][    C2] RIP: 0033:0x7f471c970337
[ 8779.166639][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8779.166641][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8779.166644][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8779.166646][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8779.166648][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8779.166650][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8779.166653][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8802.769321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8802.769853][    C2] rcu: 2-....: (6573057 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2940098
| [ 8802.770483][    C2] rcu: (t=6578252 jiffies g=1286133 q=114888 ncpus=4)
| [ 8802.770806][    C2] Tainted: [L]=SOFTLOCKUP
[ 8802.770808][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8802.770810][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8802.770820][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8802.770823][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8802.770827][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8802.770830][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8802.770833][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8802.770835][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8802.770837][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8802.770839][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8802.770841][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8802.770845][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8802.770847][    C2] PKRU: 55555554
[ 8802.770848][    C2] Call Trace:
[ 8802.770850][    C2]  <TASK>
[ 8802.770852][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8802.770859][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8802.770864][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8802.770866][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8802.770870][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8802.770877][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8802.770881][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8802.770886][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8802.770889][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8802.770892][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8802.770896][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8802.770902][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8802.770907][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8802.770914][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8802.770921][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8802.770924][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8802.770927][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8802.770930][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8802.770933][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8802.770939][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8802.770942][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8802.770949][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8802.770953][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8802.770957][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8802.770962][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8802.770966][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8802.770971][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8802.770975][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8802.770981][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8802.770988][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8802.770991][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8802.770993][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8802.770997][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8802.771001][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8802.771008][ C2] ksys_write (fs/read_write.c:738) 
[ 8802.771011][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8802.771013][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8802.771020][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8802.771024][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8802.771028][    C2] RIP: 0033:0x7f471c970337
[ 8802.771037][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8802.771038][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8802.771042][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8802.771044][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8802.771046][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8802.771049][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8802.771050][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8828.512980][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8828.512984][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8828.512991][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8828.513004][    C2] Tainted: [L]=SOFTLOCKUP
[ 8828.513005][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8828.513008][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8828.513013][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8828.513016][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8828.513020][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8828.513022][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8828.513024][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8828.513026][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8828.513028][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8828.513030][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8828.513033][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8828.513037][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8828.513039][    C2] PKRU: 55555554
[ 8828.513040][    C2] Call Trace:
[ 8828.513042][    C2]  <TASK>
[ 8828.513046][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8828.513053][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8828.513058][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8828.513061][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8828.513065][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8828.513069][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8828.513074][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8828.513080][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8828.513083][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8828.513086][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8828.513090][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8828.513096][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8828.513101][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8828.513109][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8828.513116][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8828.513118][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8828.513121][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8828.513124][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8828.513127][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8828.513133][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8828.513137][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8828.513144][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8828.513147][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8828.513151][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8828.513157][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8828.513160][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8828.513166][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8828.513171][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8828.513177][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8828.513183][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8828.513187][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8828.513189][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8828.513193][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8828.513197][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8828.513205][ C2] ksys_write (fs/read_write.c:738) 
[ 8828.513208][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8828.513211][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8828.513218][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8828.513222][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8828.513226][    C2] RIP: 0033:0x7f471c970337
[ 8828.513234][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8828.513236][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8828.513239][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8828.513242][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8828.513244][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8828.513246][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8828.513248][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8856.512972][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8856.512977][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8856.512983][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8856.512995][    C2] Tainted: [L]=SOFTLOCKUP
[ 8856.512997][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8856.512999][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8856.513005][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8856.513008][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8856.513011][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8856.513013][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8856.513015][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8856.513017][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8856.513020][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8856.513022][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8856.513024][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8856.513028][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8856.513029][    C2] PKRU: 55555554
[ 8856.513031][    C2] Call Trace:
[ 8856.513033][    C2]  <TASK>
[ 8856.513037][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8856.513045][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8856.513050][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8856.513053][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8856.513057][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8856.513062][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8856.513066][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8856.513072][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8856.513075][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8856.513078][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8856.513083][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8856.513089][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8856.513094][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8856.513101][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8856.513108][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8856.513110][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8856.513113][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8856.513116][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8856.513119][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8856.513125][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8856.513129][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8856.513136][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8856.513139][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8856.513143][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8856.513149][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8856.513153][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8856.513159][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8856.513163][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8856.513169][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8856.513176][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8856.513180][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8856.513183][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8856.513186][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8856.513190][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8856.513198][ C2] ksys_write (fs/read_write.c:738) 
[ 8856.513201][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8856.513203][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8856.513210][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8856.513214][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8856.513218][    C2] RIP: 0033:0x7f471c970337
[ 8856.513226][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8856.513228][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8856.513231][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8856.513234][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8856.513236][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8856.513238][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8856.513240][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8877.470534][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8877.470746][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 8877.470910][    C2] NMI backtrace for cpu 2
| [ 8877.470929][    C2] Tainted: [L]=SOFTLOCKUP
[ 8877.470930][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8877.470933][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 8877.470942][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 8877.470945][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 8877.470949][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 8877.470951][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 8877.470953][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 8877.470956][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 8877.470958][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 8877.470959][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8877.470962][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8877.470966][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8877.470968][    C2] PKRU: 55555554
[ 8877.470969][    C2] Call Trace:
[ 8877.470972][    C2]  <IRQ>
[ 8877.470974][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 8877.470984][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 8877.470993][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 8877.471001][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 8877.471007][    C2]  </IRQ>
[ 8877.471008][    C2]  <TASK>
[ 8877.471010][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 8877.471015][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 8877.471022][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 8877.471025][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 8877.471027][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8877.471029][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8877.471031][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8877.471033][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8877.471035][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8877.471039][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8877.471046][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8877.471051][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8877.471057][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8877.471062][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8877.471064][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8877.471069][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8877.471075][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8877.471079][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8877.471085][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8877.471088][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8877.471091][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8877.471096][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8877.471102][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8877.471107][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8877.471113][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8877.471121][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8877.471123][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8877.471126][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8877.471129][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8877.471132][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8877.471137][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8877.471141][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8877.471148][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8877.471152][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8877.471156][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8877.471161][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8877.471165][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8877.471169][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8877.471174][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8877.471180][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8877.471185][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8877.471189][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8877.471191][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8877.471195][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8877.471199][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8877.471205][ C2] ksys_write (fs/read_write.c:738) 
[ 8877.471209][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8877.471212][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8877.471218][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8877.471221][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8877.471225][    C2] RIP: 0033:0x7f471c970337
[ 8877.471233][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8877.471235][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8877.471238][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8877.471240][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8877.471242][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8877.471244][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8877.471246][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8880.772335][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8880.772907][    C2] rcu: 2-....: (6650984 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=2976099
| [ 8880.773426][    C2] rcu: (t=6656255 jiffies g=1286133 q=116317 ncpus=4)
| [ 8880.773689][    C2] Tainted: [L]=SOFTLOCKUP
[ 8880.773691][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8880.773693][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8880.773700][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8880.773704][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8880.773707][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8880.773710][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8880.773713][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8880.773715][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8880.773717][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8880.773719][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8880.773721][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8880.773725][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8880.773728][    C2] PKRU: 55555554
[ 8880.773729][    C2] Call Trace:
[ 8880.773731][    C2]  <TASK>
[ 8880.773733][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8880.773740][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8880.773745][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8880.773747][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8880.773751][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8880.773757][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8880.773761][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8880.773767][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8880.773770][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8880.773773][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8880.773778][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8880.773784][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8880.773789][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8880.773796][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8880.773803][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8880.773806][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8880.773809][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8880.773812][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8880.773815][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8880.773821][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8880.773825][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8880.773832][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8880.773835][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8880.773839][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8880.773844][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8880.773848][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8880.773852][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8880.773856][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8880.773863][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8880.773868][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8880.773872][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8880.773875][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8880.773895][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8880.773899][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8880.773906][ C2] ksys_write (fs/read_write.c:738) 
[ 8880.773910][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8880.773912][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8880.773918][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8880.773922][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8880.773925][    C2] RIP: 0033:0x7f471c970337
[ 8880.773932][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8880.773934][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8880.773937][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8880.773939][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8880.773941][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8880.773943][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8880.773945][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8908.512970][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8908.512975][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8908.512981][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8908.512994][    C2] Tainted: [L]=SOFTLOCKUP
[ 8908.512995][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8908.512997][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8908.513002][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8908.513006][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8908.513009][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8908.513011][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8908.513014][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8908.513016][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8908.513018][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8908.513020][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8908.513023][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8908.513026][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8908.513029][    C2] PKRU: 55555554
[ 8908.513030][    C2] Call Trace:
[ 8908.513034][    C2]  <TASK>
[ 8908.513038][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8908.513045][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8908.513051][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8908.513054][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8908.513057][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8908.513062][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8908.513066][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8908.513073][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8908.513075][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8908.513078][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8908.513083][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8908.513089][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8908.513094][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8908.513101][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8908.513108][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8908.513111][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8908.513114][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8908.513117][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8908.513120][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8908.513125][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8908.513129][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8908.513137][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8908.513140][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8908.513144][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8908.513149][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8908.513153][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8908.513158][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8908.513162][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8908.513168][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8908.513175][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8908.513178][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8908.513181][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8908.513185][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8908.513189][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8908.513196][ C2] ksys_write (fs/read_write.c:738) 
[ 8908.513199][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8908.513202][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8908.513209][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8908.513213][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8908.513218][    C2] RIP: 0033:0x7f471c970337
[ 8908.513226][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8908.513228][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8908.513231][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8908.513233][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8908.513235][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8908.513237][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8908.513239][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8936.512969][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 8936.512974][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 8936.512980][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 8936.512993][    C2] Tainted: [L]=SOFTLOCKUP
[ 8936.512995][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8936.512998][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8936.513003][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8936.513007][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8936.513010][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8936.513012][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8936.513015][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8936.513017][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8936.513019][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8936.513022][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8936.513025][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8936.513029][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8936.513031][    C2] PKRU: 55555554
[ 8936.513032][    C2] Call Trace:
[ 8936.513035][    C2]  <TASK>
[ 8936.513040][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8936.513047][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8936.513053][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8936.513056][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8936.513060][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8936.513065][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8936.513069][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8936.513076][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8936.513079][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8936.513082][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8936.513087][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8936.513093][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8936.513098][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8936.513106][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8936.513113][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8936.513116][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8936.513120][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8936.513122][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8936.513125][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8936.513132][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8936.513135][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8936.513154][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8936.513157][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8936.513161][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8936.513167][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8936.513171][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8936.513176][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8936.513180][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8936.513187][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8936.513193][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8936.513197][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8936.513200][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8936.513204][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8936.513207][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8936.513214][ C2] ksys_write (fs/read_write.c:738) 
[ 8936.513218][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8936.513220][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8936.513227][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8936.513231][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8936.513235][    C2] RIP: 0033:0x7f471c970337
[ 8936.513243][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8936.513245][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8936.513248][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8936.513250][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8936.513252][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8936.513254][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8936.513256][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8958.775337][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8958.775972][    C2] rcu: 2-....: (6728930 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=3011059
| [ 8958.776404][    C2] rcu: (t=6734258 jiffies g=1286133 q=117340 ncpus=4)
| [ 8958.776671][    C2] Tainted: [L]=SOFTLOCKUP
[ 8958.776672][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8958.776675][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 8958.776684][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 8958.776688][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 8958.776691][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8958.776694][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8958.776696][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8958.776698][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8958.776700][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8958.776702][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8958.776704][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8958.776708][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8958.776710][    C2] PKRU: 55555554
[ 8958.776712][    C2] Call Trace:
[ 8958.776713][    C2]  <TASK>
[ 8958.776714][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8958.776722][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8958.776729][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8958.776733][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8958.776736][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8958.776740][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8958.776747][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8958.776751][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8958.776757][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8958.776760][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8958.776763][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8958.776767][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8958.776773][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8958.776778][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8958.776786][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8958.776793][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8958.776795][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8958.776799][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8958.776801][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8958.776804][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8958.776810][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8958.776813][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8958.776820][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8958.776824][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8958.776828][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8958.776833][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8958.776837][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8958.776842][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8958.776847][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8958.776853][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8958.776859][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8958.776862][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8958.776865][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8958.776869][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8958.776872][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8958.776880][ C2] ksys_write (fs/read_write.c:738) 
[ 8958.776883][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8958.776886][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8958.776892][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8958.776896][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8958.776900][    C2] RIP: 0033:0x7f471c970337
[ 8958.776908][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8958.776910][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8958.776913][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8958.776915][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8958.776918][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8958.776920][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8958.776922][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 8975.774540][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8975.774729][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 8975.774924][    C2] NMI backtrace for cpu 2
| [ 8975.774941][    C2] Tainted: [L]=SOFTLOCKUP
[ 8975.774942][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8975.774945][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 8975.774954][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 8975.774957][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 8975.774962][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 8975.774964][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 8975.774967][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 8975.774969][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 8975.774971][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 8975.774973][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 8975.774975][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8975.774979][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 8975.774981][    C2] PKRU: 55555554
[ 8975.774982][    C2] Call Trace:
[ 8975.774985][    C2]  <IRQ>
[ 8975.774987][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 8975.774994][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 8975.775001][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 8975.775007][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 8975.775013][    C2]  </IRQ>
[ 8975.775014][    C2]  <TASK>
[ 8975.775016][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 8975.775021][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 8975.775028][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 8975.775031][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 8975.775033][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 8975.775036][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 8975.775038][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 8975.775040][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 8975.775042][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 8975.775046][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 8975.775052][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 8975.775060][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 8975.775064][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8975.775067][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8975.775070][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8975.775077][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 8975.775081][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 8975.775087][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8975.775090][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 8975.775093][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 8975.775098][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 8975.775104][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 8975.775109][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 8975.775116][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 8975.775124][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 8975.775126][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 8975.775130][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 8975.775132][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 8975.775135][ C2] ? release_sock (net/core/sock.c:3747) 
[ 8975.775142][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 8975.775145][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8975.775152][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 8975.775156][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 8975.775160][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 8975.775166][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 8975.775170][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 8975.775174][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 8975.775179][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 8975.775185][ C2] ? ksys_write (fs/read_write.c:738) 
[ 8975.775192][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 8975.775196][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 8975.775199][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 8975.775203][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 8975.775207][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 8975.775214][ C2] ksys_write (fs/read_write.c:738) 
[ 8975.775217][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 8975.775220][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 8975.775226][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 8975.775230][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 8975.775233][    C2] RIP: 0033:0x7f471c970337
[ 8975.775241][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 8975.775243][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 8975.775246][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 8975.775248][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 8975.775250][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 8975.775253][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 8975.775255][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9000.512972][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9000.512976][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9000.512983][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9000.512995][    C2] Tainted: [L]=SOFTLOCKUP
[ 9000.512997][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9000.512999][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9000.513005][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9000.513008][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9000.513011][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9000.513014][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9000.513016][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9000.513018][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9000.513020][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9000.513022][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9000.513025][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9000.513029][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9000.513031][    C2] PKRU: 55555554
[ 9000.513032][    C2] Call Trace:
[ 9000.513036][    C2]  <TASK>
[ 9000.513040][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9000.513047][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9000.513052][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9000.513055][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9000.513059][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9000.513063][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9000.513067][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9000.513074][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9000.513076][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9000.513079][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9000.513084][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9000.513089][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9000.513094][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9000.513102][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9000.513110][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9000.513112][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9000.513116][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9000.513118][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9000.513121][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9000.513128][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9000.513131][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9000.513139][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9000.513142][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9000.513146][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9000.513151][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9000.513156][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9000.513161][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9000.513166][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9000.513172][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9000.513179][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9000.513183][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9000.513185][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9000.513189][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9000.513193][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9000.513199][ C2] ksys_write (fs/read_write.c:738) 
[ 9000.513203][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9000.513205][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9000.513212][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9000.513216][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9000.513220][    C2] RIP: 0033:0x7f471c970337
[ 9000.513227][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9000.513229][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9000.513232][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9000.513235][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9000.513237][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9000.513239][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9000.513241][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9028.512982][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9028.512986][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9028.512992][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9028.513005][    C2] Tainted: [L]=SOFTLOCKUP
[ 9028.513007][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9028.513009][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9028.513014][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9028.513018][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9028.513021][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9028.513024][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9028.513026][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9028.513028][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9028.513030][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9028.513032][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9028.513035][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9028.513039][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9028.513041][    C2] PKRU: 55555554
[ 9028.513042][    C2] Call Trace:
[ 9028.513045][    C2]  <TASK>
[ 9028.513049][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9028.513056][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9028.513061][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9028.513064][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9028.513068][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9028.513073][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9028.513077][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9028.513084][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9028.513086][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9028.513089][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9028.513094][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9028.513100][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9028.513105][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9028.513112][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9028.513119][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9028.513121][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9028.513124][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9028.513127][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9028.513130][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9028.513136][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9028.513140][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9028.513147][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9028.513151][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9028.513154][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9028.513160][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9028.513164][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9028.513169][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9028.513174][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9028.513180][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9028.513187][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9028.513191][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9028.513193][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9028.513197][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9028.513201][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9028.513208][ C2] ksys_write (fs/read_write.c:738) 
[ 9028.513211][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9028.513214][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9028.513220][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9028.513225][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9028.513229][    C2] RIP: 0033:0x7f471c970337
[ 9028.513237][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9028.513239][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9028.513242][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9028.513244][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9028.513246][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9028.513248][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9028.513250][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9036.778336][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9036.778931][    C2] rcu: 2-....: (6806856 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=3045606
| [ 9036.779396][    C2] rcu: (t=6812261 jiffies g=1286133 q=118769 ncpus=4)
| [ 9036.779746][    C2] Tainted: [L]=SOFTLOCKUP
[ 9036.779748][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9036.779750][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9036.779759][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9036.779763][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9036.779767][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9036.779769][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9036.779771][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9036.779773][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9036.779775][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9036.779777][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9036.779779][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9036.779783][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9036.779785][    C2] PKRU: 55555554
[ 9036.779787][    C2] Call Trace:
[ 9036.779788][    C2]  <TASK>
[ 9036.779790][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9036.779797][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9036.779802][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9036.779804][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9036.779808][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9036.779815][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9036.779818][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9036.779824][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9036.779827][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9036.779829][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9036.779834][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9036.779839][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9036.779844][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9036.779851][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9036.779858][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9036.779860][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9036.779863][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9036.779866][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9036.779869][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9036.779875][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9036.779878][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9036.779885][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9036.779889][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9036.779893][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9036.779898][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9036.779901][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9036.779906][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9036.779910][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9036.779916][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9036.779922][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9036.779925][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9036.779928][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9036.779931][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9036.779935][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9036.779942][ C2] ksys_write (fs/read_write.c:738) 
[ 9036.779945][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9036.779948][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9036.779955][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9036.779958][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9036.779962][    C2] RIP: 0033:0x7f471c970337
[ 9036.779969][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9036.779970][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9036.779973][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9036.779975][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9036.779977][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9036.779979][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9036.779982][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9064.512971][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9064.512976][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9064.512982][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9064.512995][    C2] Tainted: [L]=SOFTLOCKUP
[ 9064.512996][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9064.512999][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9064.513004][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9064.513007][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9064.513010][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9064.513012][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9064.513015][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9064.513017][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9064.513019][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9064.513022][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9064.513025][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9064.513029][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9064.513031][    C2] PKRU: 55555554
[ 9064.513032][    C2] Call Trace:
[ 9064.513035][    C2]  <TASK>
[ 9064.513039][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9064.513046][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9064.513051][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9064.513054][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9064.513058][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9064.513063][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9064.513067][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9064.513074][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9064.513077][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9064.513080][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9064.513085][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9064.513091][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9064.513096][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9064.513103][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9064.513109][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9064.513112][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9064.513115][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9064.513117][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9064.513120][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9064.513126][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9064.513129][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9064.513137][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9064.513140][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9064.513144][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9064.513149][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9064.513153][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9064.513158][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9064.513163][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9064.513169][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9064.513175][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9064.513179][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9064.513182][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9064.513185][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9064.513189][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9064.513196][ C2] ksys_write (fs/read_write.c:738) 
[ 9064.513200][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9064.513202][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9064.513209][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9064.513213][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9064.513217][    C2] RIP: 0033:0x7f471c970337
[ 9064.513226][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9064.513228][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9064.513231][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9064.513233][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9064.513236][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9064.513238][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9064.513240][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9074.078536][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9074.078719][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 9074.078882][    C2] NMI backtrace for cpu 2
| [ 9074.078902][    C2] Tainted: [L]=SOFTLOCKUP
[ 9074.078903][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9074.078906][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 9074.078914][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 9074.078918][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 9074.078921][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 9074.078924][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 9074.078926][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 9074.078929][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 9074.078931][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 9074.078933][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9074.078935][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9074.078939][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9074.078941][    C2] PKRU: 55555554
[ 9074.078943][    C2] Call Trace:
[ 9074.078945][    C2]  <IRQ>
[ 9074.078947][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 9074.078956][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 9074.078963][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 9074.078968][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 9074.078974][    C2]  </IRQ>
[ 9074.078975][    C2]  <TASK>
[ 9074.078977][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 9074.078981][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9074.078986][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9074.078989][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9074.078991][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9074.078993][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9074.078996][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9074.078998][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9074.079000][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9074.079004][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 9074.079010][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9074.079017][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9074.079021][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9074.079023][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9074.079027][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9074.079034][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9074.079038][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9074.079045][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9074.079047][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9074.079050][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9074.079055][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9074.079060][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9074.079066][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9074.079072][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9074.079079][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9074.079082][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9074.079085][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9074.079087][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9074.079090][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9074.079096][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9074.079099][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9074.079106][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9074.079110][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9074.079113][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9074.079119][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9074.079122][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9074.079127][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9074.079132][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9074.079138][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9074.079144][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9074.079148][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9074.079150][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9074.079154][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9074.079158][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9074.079164][ C2] ksys_write (fs/read_write.c:738) 
[ 9074.079168][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9074.079171][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9074.079177][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9074.079181][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9074.079184][    C2] RIP: 0033:0x7f471c970337
[ 9074.079193][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9074.079194][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9074.079198][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9074.079200][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9074.079202][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9074.079205][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9074.079207][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9100.512972][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9100.512976][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9100.512982][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9100.512996][    C2] Tainted: [L]=SOFTLOCKUP
[ 9100.512998][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9100.513000][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 9100.513007][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 9100.513011][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000282
[ 9100.513014][    C2] RAX: ffff88800b85eb34 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9100.513017][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9100.513019][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9100.513021][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9100.513023][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9100.513025][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9100.513028][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9100.513032][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9100.513034][    C2] PKRU: 55555554
[ 9100.513035][    C2] Call Trace:
[ 9100.513038][    C2]  <TASK>
[ 9100.513041][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 9100.513047][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9100.513054][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9100.513059][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9100.513062][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9100.513066][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9100.513071][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9100.513075][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9100.513082][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9100.513085][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9100.513088][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9100.513093][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9100.513099][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9100.513105][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9100.513112][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9100.513120][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9100.513123][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9100.513126][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9100.513129][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9100.513132][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9100.513138][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9100.513143][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9100.513150][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9100.513154][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9100.513158][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9100.513164][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9100.513179][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9100.513185][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9100.513190][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9100.513197][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9100.513203][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9100.513206][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9100.513209][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9100.513213][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9100.513217][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9100.513224][ C2] ksys_write (fs/read_write.c:738) 
[ 9100.513228][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9100.513231][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9100.513238][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9100.513243][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9100.513247][    C2] RIP: 0033:0x7f471c970337
[ 9100.513255][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9100.513257][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9100.513260][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9100.513263][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9100.513265][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9100.513267][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9100.513269][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9114.781321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9114.781726][    C2] rcu: 2-....: (6884782 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=3081011
| [ 9114.782264][    C2] rcu: (t=6890264 jiffies g=1286133 q=120198 ncpus=4)
| [ 9114.782518][    C2] Tainted: [L]=SOFTLOCKUP
[ 9114.782519][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9114.782522][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9114.782532][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9114.782536][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9114.782540][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9114.782542][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9114.782544][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9114.782547][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9114.782548][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9114.782551][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9114.782554][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9114.782557][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9114.782560][    C2] PKRU: 55555554
[ 9114.782561][    C2] Call Trace:
[ 9114.782563][    C2]  <TASK>
[ 9114.782565][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9114.782573][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9114.782578][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9114.782581][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9114.782585][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9114.782592][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9114.782596][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9114.782602][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9114.782605][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9114.782608][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9114.782613][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9114.782618][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9114.782623][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9114.782630][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9114.782638][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9114.782640][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9114.782643][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9114.782646][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9114.782649][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9114.782655][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9114.782658][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9114.782665][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9114.782669][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9114.782673][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9114.782679][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9114.782683][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9114.782687][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9114.782692][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9114.782698][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9114.782705][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9114.782708][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9114.782710][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9114.782714][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9114.782718][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9114.782725][ C2] ksys_write (fs/read_write.c:738) 
[ 9114.782728][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9114.782731][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9114.782738][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9114.782742][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9114.782746][    C2] RIP: 0033:0x7f471c970337
[ 9114.782755][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9114.782757][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9114.782760][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9114.782763][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9114.782765][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9114.782767][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9114.782769][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9140.512973][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9140.512977][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9140.512984][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9140.513000][    C2] Tainted: [L]=SOFTLOCKUP
[ 9140.513002][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9140.513004][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9140.513009][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9140.513014][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9140.513017][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9140.513019][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9140.513021][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9140.513024][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9140.513026][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9140.513028][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9140.513031][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9140.513034][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9140.513036][    C2] PKRU: 55555554
[ 9140.513037][    C2] Call Trace:
[ 9140.513040][    C2]  <TASK>
[ 9140.513045][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9140.513052][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9140.513057][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9140.513060][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9140.513064][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9140.513069][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9140.513073][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9140.513079][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9140.513082][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9140.513085][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9140.513090][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9140.513096][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9140.513101][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9140.513108][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9140.513116][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9140.513119][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9140.513122][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9140.513124][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9140.513128][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9140.513134][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9140.513138][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9140.513146][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9140.513149][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9140.513154][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9140.513160][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9140.513164][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9140.513169][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9140.513174][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9140.513181][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9140.513187][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9140.513191][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9140.513194][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9140.513198][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9140.513202][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9140.513209][ C2] ksys_write (fs/read_write.c:738) 
[ 9140.513213][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9140.513216][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9140.513223][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9140.513227][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9140.513232][    C2] RIP: 0033:0x7f471c970337
[ 9140.513241][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9140.513243][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9140.513247][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9140.513249][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9140.513252][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9140.513254][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9140.513256][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9168.512973][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9168.512977][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9168.512983][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9168.512996][    C2] Tainted: [L]=SOFTLOCKUP
[ 9168.512998][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9168.513000][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9168.513006][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9168.513009][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9168.513012][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9168.513015][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9168.513017][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9168.513019][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9168.513021][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9168.513023][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9168.513026][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9168.513030][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9168.513032][    C2] PKRU: 55555554
[ 9168.513034][    C2] Call Trace:
[ 9168.513036][    C2]  <TASK>
[ 9168.513040][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9168.513048][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9168.513054][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9168.513057][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9168.513061][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9168.513066][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9168.513070][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9168.513077][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9168.513079][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9168.513082][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9168.513087][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9168.513093][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9168.513098][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9168.513105][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9168.513112][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9168.513115][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9168.513118][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9168.513121][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9168.513124][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9168.513130][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9168.513134][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9168.513142][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9168.513145][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9168.513150][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9168.513156][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9168.513160][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9168.513165][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9168.513170][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9168.513177][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9168.513184][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9168.513187][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9168.513190][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9168.513194][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9168.513199][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9168.513206][ C2] ksys_write (fs/read_write.c:738) 
[ 9168.513210][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9168.513212][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9168.513219][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9168.513224][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9168.513229][    C2] RIP: 0033:0x7f471c970337
[ 9168.513237][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9168.513239][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9168.513242][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9168.513244][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9168.513246][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9168.513248][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9168.513251][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9172.382546][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9172.382730][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 9172.382915][    C2] NMI backtrace for cpu 2
| [ 9172.382930][    C2] Tainted: [L]=SOFTLOCKUP
[ 9172.382932][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9172.382934][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 9172.382941][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 9172.382945][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 9172.382948][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 9172.382951][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 9172.382953][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 9172.382955][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 9172.382957][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 9172.382959][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9172.382962][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9172.382966][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9172.382968][    C2] PKRU: 55555554
[ 9172.382969][    C2] Call Trace:
[ 9172.382972][    C2]  <IRQ>
[ 9172.382974][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 9172.382982][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 9172.382988][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 9172.382994][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 9172.382999][    C2]  </IRQ>
[ 9172.383000][    C2]  <TASK>
[ 9172.383002][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 9172.383005][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9172.383010][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9172.383013][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9172.383015][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9172.383017][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9172.383020][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9172.383022][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9172.383024][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9172.383028][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 9172.383034][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9172.383042][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9172.383046][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9172.383049][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9172.383053][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9172.383059][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9172.383063][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9172.383070][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9172.383073][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9172.383076][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9172.383081][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9172.383087][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9172.383093][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9172.383098][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9172.383105][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9172.383108][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9172.383111][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9172.383113][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9172.383116][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9172.383122][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9172.383125][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9172.383133][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9172.383136][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9172.383140][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9172.383145][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9172.383149][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9172.383154][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9172.383158][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9172.383165][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9172.383171][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9172.383175][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9172.383178][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9172.383182][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9172.383186][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9172.383193][ C2] ksys_write (fs/read_write.c:738) 
[ 9172.383196][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9172.383199][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9172.383205][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9172.383209][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9172.383212][    C2] RIP: 0033:0x7f471c970337
[ 9172.383218][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9172.383220][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9172.383223][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9172.383226][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9172.383228][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9172.383230][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9172.383232][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9192.784346][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9192.784824][    C2] rcu: 2-....: (6962708 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=3117468
| [ 9192.785352][    C2] rcu: (t=6968267 jiffies g=1286133 q=121624 ncpus=4)
| [ 9192.785639][    C2] Tainted: [L]=SOFTLOCKUP
[ 9192.785641][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9192.785643][ C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:64 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 9192.785652][ C2] Code: 5b 5d 41 5c e9 0b fb 1a 02 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df <4d> 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d
All code
========
   0:	5b                   	pop    %rbx
   1:	5d                   	pop    %rbp
   2:	41 5c                	pop    %r12
   4:	e9 0b fb 1a 02       	jmp    0x21afb14
   9:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  10:	7f ff ff 
  13:	48 39 c7             	cmp    %rax,%rdi
  16:	76 dd                	jbe    0xfffffffffffffff5
  18:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  1d:	48 89 fd             	mov    %rdi,%rbp
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df 
  2a:*	4d 89 d1             	mov    %r10,%r9		<-- trapping instruction
  2d:	48 c1 ed 03          	shr    $0x3,%rbp
  31:	49 c1 e9 03          	shr    $0x3,%r9
  35:	48 01 c5             	add    %rax,%rbp
  38:	49 01 c1             	add    %rax,%r9
  3b:	48 89 e8             	mov    %rbp,%rax
  3e:	49                   	rex.WB
  3f:	8d                   	.byte 0x8d

Code starting with the faulting instruction
===========================================
   0:	4d 89 d1             	mov    %r10,%r9
   3:	48 c1 ed 03          	shr    $0x3,%rbp
   7:	49 c1 e9 03          	shr    $0x3,%r9
   b:	48 01 c5             	add    %rax,%rbp
   e:	49 01 c1             	add    %rax,%r9
  11:	48 89 e8             	mov    %rbp,%rax
  14:	49                   	rex.WB
  15:	8d                   	.byte 0x8d
[ 9192.785656][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000212
[ 9192.785660][    C2] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9192.785662][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9192.785664][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9192.785666][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9192.785668][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9192.785670][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9192.785673][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9192.785677][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9192.785679][    C2] PKRU: 55555554
[ 9192.785680][    C2] Call Trace:
[ 9192.785681][    C2]  <TASK>
[ 9192.785683][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 9192.785690][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9192.785698][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9192.785702][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9192.785705][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9192.785709][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9192.785716][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9192.785719][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9192.785726][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9192.785728][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9192.785731][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9192.785736][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9192.785742][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9192.785748][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9192.785754][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9192.785761][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9192.785764][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9192.785767][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9192.785770][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9192.785773][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9192.785779][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9192.785783][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9192.785789][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9192.785793][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9192.785798][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9192.785804][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9192.785808][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9192.785812][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9192.785817][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9192.785823][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9192.785829][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9192.785833][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9192.785835][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9192.785839][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9192.785843][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9192.785850][ C2] ksys_write (fs/read_write.c:738) 
[ 9192.785853][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9192.785856][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9192.785862][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9192.785867][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9192.785870][    C2] RIP: 0033:0x7f471c970337
[ 9192.785877][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9192.785879][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9192.785882][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9192.785885][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9192.785886][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9192.785888][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9192.785891][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9220.512987][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9220.512991][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9220.512997][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9220.513011][    C2] Tainted: [L]=SOFTLOCKUP
[ 9220.513012][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9220.513015][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9220.513020][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9220.513024][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9220.513027][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9220.513030][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9220.513032][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9220.513034][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9220.513037][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9220.513039][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9220.513042][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9220.513045][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9220.513047][    C2] PKRU: 55555554
[ 9220.513049][    C2] Call Trace:
[ 9220.513052][    C2]  <TASK>
[ 9220.513056][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9220.513063][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9220.513069][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9220.513072][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9220.513076][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9220.513081][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9220.513086][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9220.513093][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9220.513095][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9220.513098][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9220.513103][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9220.513110][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9220.513115][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9220.513122][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9220.513129][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9220.513132][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9220.513135][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9220.513138][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9220.513141][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9220.513147][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9220.513151][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9220.513159][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9220.513163][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9220.513167][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9220.513173][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9220.513177][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9220.513182][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9220.513186][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9220.513194][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9220.513200][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9220.513204][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9220.513207][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9220.513211][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9220.513215][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9220.513223][ C2] ksys_write (fs/read_write.c:738) 
[ 9220.513226][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9220.513229][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9220.513236][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9220.513240][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9220.513244][    C2] RIP: 0033:0x7f471c970337
[ 9220.513253][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9220.513255][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9220.513258][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9220.513261][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9220.513263][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9220.513265][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9220.513268][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9248.512972][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9248.512976][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9248.512983][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9248.512996][    C2] Tainted: [L]=SOFTLOCKUP
[ 9248.512998][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9248.513000][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9248.513005][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9248.513009][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9248.513012][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9248.513015][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9248.513017][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9248.513019][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9248.513021][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9248.513023][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9248.513026][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9248.513030][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9248.513033][    C2] PKRU: 55555554
[ 9248.513034][    C2] Call Trace:
[ 9248.513037][    C2]  <TASK>
[ 9248.513041][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9248.513049][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9248.513055][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9248.513058][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9248.513062][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9248.513066][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9248.513071][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9248.513077][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9248.513080][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9248.513083][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9248.513088][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9248.513094][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9248.513099][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9248.513106][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9248.513114][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9248.513117][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9248.513120][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9248.513123][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9248.513126][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9248.513132][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9248.513136][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9248.513144][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9248.513148][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9248.513152][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9248.513157][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9248.513162][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9248.513167][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9248.513172][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9248.513179][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9248.513185][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9248.513189][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9248.513192][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9248.513196][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9248.513200][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9248.513208][ C2] ksys_write (fs/read_write.c:738) 
[ 9248.513211][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9248.513214][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9248.513221][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9248.513226][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9248.513231][    C2] RIP: 0033:0x7f471c970337
[ 9248.513238][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9248.513240][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9248.513243][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9248.513246][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9248.513248][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9248.513250][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9248.513252][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9270.685940][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9270.686118][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 9270.686402][    C2] NMI backtrace for cpu 2
| [ 9270.686420][    C2] Tainted: [L]=SOFTLOCKUP
[ 9270.686422][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9270.686425][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:89 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 9270.686434][ C2] Code: 11 80 38 00 74 ef 4d 8d 1c 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea eb 09 <48> 83 c0 01 48 39 d0 74 a5 80 38 00 74 f2 e9 74 ff ff ff b8 01 00
All code
========
   0:	11 80 38 00 74 ef    	adc    %eax,-0x108bffc8(%rax)
   6:	4d 8d 1c 2c          	lea    (%r12,%rbp,1),%r11
   a:	48 89 c2             	mov    %rax,%rdx
   d:	48 85 c0             	test   %rax,%rax
  10:	75 b0                	jne    0xffffffffffffffc2
  12:	48 89 da             	mov    %rbx,%rdx
  15:	4c 89 d8             	mov    %r11,%rax
  18:	4c 29 da             	sub    %r11,%rdx
  1b:	e9 49 ff ff ff       	jmp    0xffffffffffffff69
  20:	48 85 d2             	test   %rdx,%rdx
  23:	74 b3                	je     0xffffffffffffffd8
  25:	48 01 ea             	add    %rbp,%rdx
  28:	eb 09                	jmp    0x33
  2a:*	48 83 c0 01          	add    $0x1,%rax		<-- trapping instruction
  2e:	48 39 d0             	cmp    %rdx,%rax
  31:	74 a5                	je     0xffffffffffffffd8
  33:	80 38 00             	cmpb   $0x0,(%rax)
  36:	74 f2                	je     0x2a
  38:	e9 74 ff ff ff       	jmp    0xffffffffffffffb1
  3d:	b8                   	.byte 0xb8
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	48 83 c0 01          	add    $0x1,%rax
   4:	48 39 d0             	cmp    %rdx,%rax
   7:	74 a5                	je     0xffffffffffffffae
   9:	80 38 00             	cmpb   $0x0,(%rax)
   c:	74 f2                	je     0x0
   e:	e9 74 ff ff ff       	jmp    0xffffffffffffff87
  13:	b8                   	.byte 0xb8
  14:	01 00                	add    %eax,(%rax)
[ 9270.686437][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000246
[ 9270.686441][    C2] RAX: ffffed100170bd66 RBX: ffffed100170bd67 RCX: ffffffffa2cd0f13
[ 9270.686444][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9270.686446][    C2] RBP: ffffed100170bd66 R08: 0000000000000000 R09: ffffed100170bd66
[ 9270.686449][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9270.686451][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9270.686453][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9270.686455][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9270.686459][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9270.686461][    C2] PKRU: 55555554
[ 9270.686463][    C2] Call Trace:
[ 9270.686466][    C2]  <TASK>
[ 9270.686470][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 9270.686479][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9270.686486][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9270.686491][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9270.686494][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9270.686498][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9270.686505][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9270.686509][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9270.686515][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9270.686518][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9270.686521][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9270.686526][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9270.686532][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9270.686537][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9270.686544][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9270.686552][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9270.686555][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9270.686558][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9270.686561][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9270.686564][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9270.686570][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9270.686574][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9270.686581][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9270.686585][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9270.686589][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9270.686595][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9270.686600][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9270.686605][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9270.686610][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9270.686616][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9270.686622][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9270.686626][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9270.686628][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9270.686633][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9270.686637][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9270.686644][ C2] ksys_write (fs/read_write.c:738) 
[ 9270.686648][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9270.686650][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9270.686657][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9270.686661][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9270.686665][    C2] RIP: 0033:0x7f471c970337
[ 9270.686673][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9270.686675][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9270.686678][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9270.686680][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9270.686683][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9270.686685][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9270.686687][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9270.787319][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9270.787680][    C2] rcu: 2-....: (7040637 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=3153923
| [ 9270.788321][    C2] rcu: (t=7046270 jiffies g=1286133 q=122975 ncpus=4)
| [ 9270.788585][    C2] Tainted: [L]=SOFTLOCKUP
[ 9270.788587][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9270.788589][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9270.788595][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9270.788599][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9270.788602][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9270.788604][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9270.788607][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9270.788609][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9270.788611][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9270.788613][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9270.788616][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9270.788619][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9270.788621][    C2] PKRU: 55555554
[ 9270.788623][    C2] Call Trace:
[ 9270.788624][    C2]  <TASK>
[ 9270.788626][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9270.788634][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9270.788637][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9270.788640][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9270.788644][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9270.788649][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9270.788653][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9270.788659][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9270.788662][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9270.788665][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9270.788670][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9270.788675][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9270.788681][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9270.788686][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9270.788693][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9270.788696][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9270.788699][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9270.788702][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9270.788705][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9270.788710][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9270.788714][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9270.788721][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9270.788725][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9270.788730][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9270.788734][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9270.788738][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9270.788743][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9270.788747][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9270.788753][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9270.788759][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9270.788762][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9270.788764][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9270.788768][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9270.788772][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9270.788779][ C2] ksys_write (fs/read_write.c:738) 
[ 9270.788783][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9270.788785][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9270.788791][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9270.788795][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9270.788798][    C2] RIP: 0033:0x7f471c970337
[ 9270.788803][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9270.788804][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9270.788808][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9270.788810][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9270.788812][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9270.788814][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9270.788816][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9296.512971][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9296.512975][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9296.512981][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9296.512994][    C2] Tainted: [L]=SOFTLOCKUP
[ 9296.512996][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9296.512999][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9296.513004][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9296.513007][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9296.513010][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9296.513013][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9296.513015][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9296.513017][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9296.513019][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9296.513021][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9296.513024][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9296.513028][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9296.513030][    C2] PKRU: 55555554
[ 9296.513031][    C2] Call Trace:
[ 9296.513036][    C2]  <TASK>
[ 9296.513039][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9296.513047][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9296.513053][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9296.513056][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9296.513060][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9296.513065][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9296.513070][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9296.513076][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9296.513079][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9296.513082][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9296.513087][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9296.513093][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9296.513098][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9296.513104][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9296.513112][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9296.513115][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9296.513118][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9296.513120][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9296.513123][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9296.513130][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9296.513134][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9296.513142][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9296.513146][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9296.513150][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9296.513156][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9296.513160][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9296.513165][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9296.513170][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9296.513176][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9296.513183][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9296.513186][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9296.513189][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9296.513193][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9296.513197][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9296.513204][ C2] ksys_write (fs/read_write.c:738) 
[ 9296.513207][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9296.513210][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9296.513217][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9296.513221][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9296.513225][    C2] RIP: 0033:0x7f471c970337
[ 9296.513232][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9296.513234][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9296.513237][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9296.513239][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9296.513242][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9296.513244][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9296.513246][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9324.512971][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9324.512976][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9324.512981][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9324.512995][    C2] Tainted: [L]=SOFTLOCKUP
[ 9324.512996][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9324.512999][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9324.513004][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9324.513008][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9324.513011][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9324.513013][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9324.513016][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9324.513018][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9324.513020][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9324.513022][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9324.513025][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9324.513029][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9324.513031][    C2] PKRU: 55555554
[ 9324.513032][    C2] Call Trace:
[ 9324.513035][    C2]  <TASK>
[ 9324.513039][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9324.513047][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9324.513052][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9324.513055][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9324.513059][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9324.513064][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9324.513068][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9324.513075][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9324.513078][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9324.513081][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9324.513086][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9324.513092][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9324.513097][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9324.513104][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9324.513112][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9324.513114][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9324.513117][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9324.513120][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9324.513124][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9324.513130][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9324.513134][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9324.513142][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9324.513146][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9324.513150][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9324.513156][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9324.513160][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9324.513165][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9324.513170][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9324.513177][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9324.513184][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9324.513188][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9324.513190][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9324.513194][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9324.513198][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9324.513205][ C2] ksys_write (fs/read_write.c:738) 
[ 9324.513209][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9324.513212][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9324.513219][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9324.513223][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9324.513227][    C2] RIP: 0033:0x7f471c970337
[ 9324.513235][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9324.513237][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9324.513240][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9324.513243][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9324.513245][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9324.513247][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9324.513249][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9348.790321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9348.790799][    C2] rcu: 2-....: (7118584 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=3190247
| [ 9348.791424][    C2] rcu: (t=7124273 jiffies g=1286133 q=123998 ncpus=4)
| [ 9348.791701][    C2] Tainted: [L]=SOFTLOCKUP
[ 9348.791703][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9348.791705][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9348.791716][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9348.791720][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9348.791723][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9348.791726][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9348.791729][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9348.791731][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9348.791733][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9348.791735][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9348.791738][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9348.791742][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9348.791744][    C2] PKRU: 55555554
[ 9348.791746][    C2] Call Trace:
[ 9348.791748][    C2]  <TASK>
[ 9348.791751][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9348.791759][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9348.791764][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9348.791767][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9348.791771][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9348.791778][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9348.791782][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9348.791789][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9348.791792][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9348.791795][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9348.791800][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9348.791805][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9348.791811][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9348.791818][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9348.791825][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9348.791828][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9348.791831][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9348.791834][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9348.791837][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9348.791844][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9348.791847][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9348.791855][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9348.791859][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9348.791863][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9348.791869][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9348.791873][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9348.791878][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9348.791884][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9348.791891][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9348.791897][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9348.791901][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9348.791903][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9348.791907][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9348.791911][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9348.791919][ C2] ksys_write (fs/read_write.c:738) 
[ 9348.791923][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9348.791925][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9348.791933][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9348.791937][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9348.791940][    C2] RIP: 0033:0x7f471c970337
[ 9348.791948][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9348.791950][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9348.791953][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9348.791955][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9348.791958][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9348.791960][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9348.791962][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9368.989957][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9368.990147][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 9368.990421][    C2] NMI backtrace for cpu 2
| [ 9368.990440][    C2] Tainted: [L]=SOFTLOCKUP
[ 9368.990442][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9368.990444][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9368.990454][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9368.990458][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9368.990462][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9368.990465][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9368.990467][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9368.990470][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9368.990472][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9368.990474][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9368.990477][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9368.990481][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9368.990483][    C2] PKRU: 55555554
[ 9368.990484][    C2] Call Trace:
[ 9368.990488][    C2]  <TASK>
[ 9368.990492][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9368.990499][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9368.990505][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9368.990508][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9368.990512][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9368.990519][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9368.990523][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9368.990529][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9368.990532][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9368.990535][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9368.990541][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9368.990547][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9368.990552][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9368.990559][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9368.990567][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9368.990569][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9368.990573][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9368.990576][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9368.990579][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9368.990586][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9368.990589][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9368.990597][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9368.990601][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9368.990605][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9368.990611][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9368.990615][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9368.990620][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9368.990625][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9368.990632][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9368.990639][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9368.990642][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9368.990645][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9368.990649][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9368.990653][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9368.990660][ C2] ksys_write (fs/read_write.c:738) 
[ 9368.990664][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9368.990667][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9368.990673][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9368.990678][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9368.990682][    C2] RIP: 0033:0x7f471c970337
[ 9368.990690][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9368.990691][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9368.990695][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9368.990697][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9368.990699][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9368.990702][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9368.990704][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9396.512973][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9396.512978][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9396.512984][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9396.512997][    C2] Tainted: [L]=SOFTLOCKUP
[ 9396.512999][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9396.513002][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9396.513007][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9396.513011][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9396.513014][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9396.513017][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9396.513019][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9396.513021][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9396.513023][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9396.513026][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9396.513029][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9396.513033][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9396.513035][    C2] PKRU: 55555554
[ 9396.513037][    C2] Call Trace:
[ 9396.513040][    C2]  <TASK>
[ 9396.513044][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9396.513052][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9396.513058][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9396.513061][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9396.513065][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9396.513070][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9396.513075][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9396.513082][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9396.513085][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9396.513088][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9396.513093][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9396.513099][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9396.513104][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9396.513112][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9396.513119][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9396.513122][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9396.513125][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9396.513128][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9396.513132][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9396.513138][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9396.513142][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9396.513150][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9396.513153][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9396.513158][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9396.513163][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9396.513167][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9396.513173][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9396.513178][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9396.513185][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9396.513192][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9396.513196][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9396.513198][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9396.513202][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9396.513206][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9396.513213][ C2] ksys_write (fs/read_write.c:738) 
[ 9396.513217][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9396.513220][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9396.513227][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9396.513231][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9396.513235][    C2] RIP: 0033:0x7f471c970337
[ 9396.513244][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9396.513246][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9396.513249][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9396.513252][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9396.513254][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9396.513256][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9396.513258][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9424.512971][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9424.512975][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9424.512981][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9424.512994][    C2] Tainted: [L]=SOFTLOCKUP
[ 9424.512996][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9424.512998][ C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 9424.513004][ C2] Code: ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 <49> 01 c1 48 89 e8 49 8d 59 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	7f ff                	jg     0x3
   4:	ff 48 39             	decl   0x39(%rax)
   7:	c7                   	(bad)
   8:	76 dd                	jbe    0xffffffffffffffe7
   a:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df 
  1c:	4d 89 d1             	mov    %r10,%r9
  1f:	48 c1 ed 03          	shr    $0x3,%rbp
  23:	49 c1 e9 03          	shr    $0x3,%r9
  27:	48 01 c5             	add    %rax,%rbp
  2a:*	49 01 c1             	add    %rax,%r9		<-- trapping instruction
  2d:	48 89 e8             	mov    %rbp,%rax
  30:	49 8d 59 01          	lea    0x1(%r9),%rbx
  34:	48 89 da             	mov    %rbx,%rdx
  37:	48 29 ea             	sub    %rbp,%rdx
  3a:	48 83 fa 10          	cmp    $0x10,%rdx
  3e:	0f                   	.byte 0xf
  3f:	8e                   	.byte 0x8e

Code starting with the faulting instruction
===========================================
   0:	49 01 c1             	add    %rax,%r9
   3:	48 89 e8             	mov    %rbp,%rax
   6:	49 8d 59 01          	lea    0x1(%r9),%rbx
   a:	48 89 da             	mov    %rbx,%rdx
   d:	48 29 ea             	sub    %rbp,%rdx
  10:	48 83 fa 10          	cmp    $0x10,%rdx
  14:	0f                   	.byte 0xf
  15:	8e                   	.byte 0x8e
[ 9424.513008][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000286
[ 9424.513011][    C2] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9424.513013][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9424.513015][    C2] RBP: ffffed100170bd66 R08: 0000000000000000 R09: 1ffff1100170bd66
[ 9424.513017][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9424.513019][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9424.513021][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9424.513023][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9424.513027][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9424.513029][    C2] PKRU: 55555554
[ 9424.513030][    C2] Call Trace:
[ 9424.513034][    C2]  <TASK>
[ 9424.513038][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 9424.513044][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9424.513051][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9424.513056][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9424.513058][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9424.513062][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9424.513067][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9424.513071][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9424.513078][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9424.513081][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9424.513084][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9424.513089][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9424.513094][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9424.513099][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9424.513107][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9424.513114][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9424.513117][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9424.513120][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9424.513123][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9424.513126][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9424.513133][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9424.513136][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9424.513144][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9424.513147][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9424.513151][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9424.513157][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9424.513161][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9424.513166][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9424.513171][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9424.513177][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9424.513183][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9424.513187][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9424.513189][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9424.513193][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9424.513197][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9424.513204][ C2] ksys_write (fs/read_write.c:738) 
[ 9424.513207][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9424.513210][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9424.513217][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9424.513221][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9424.513225][    C2] RIP: 0033:0x7f471c970337
[ 9424.513232][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9424.513234][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9424.513237][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9424.513239][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9424.513241][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9424.513243][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9424.513245][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9426.793320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9426.793715][    C2] rcu: 2-....: (7196516 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=3226720
| [ 9426.794237][    C2] rcu: (t=7202276 jiffies g=1286133 q=125346 ncpus=4)
| [ 9426.794499][    C2] Tainted: [L]=SOFTLOCKUP
[ 9426.794500][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9426.794502][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9426.794510][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9426.794513][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9426.794516][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9426.794519][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9426.794521][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9426.794522][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9426.794524][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9426.794527][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9426.794529][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9426.794533][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9426.794535][    C2] PKRU: 55555554
[ 9426.794536][    C2] Call Trace:
[ 9426.794538][    C2]  <TASK>
[ 9426.794540][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9426.794548][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9426.794552][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9426.794555][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9426.794558][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9426.794563][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9426.794567][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9426.794573][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9426.794576][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9426.794578][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9426.794583][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9426.794589][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9426.794594][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9426.794600][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9426.794607][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9426.794609][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9426.794613][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9426.794615][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9426.794618][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9426.794624][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9426.794627][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9426.794634][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9426.794638][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9426.794642][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9426.794647][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9426.794651][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9426.794655][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9426.794659][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9426.794665][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9426.794671][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9426.794674][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9426.794677][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9426.794681][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9426.794684][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9426.794691][ C2] ksys_write (fs/read_write.c:738) 
[ 9426.794695][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9426.794697][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9426.794704][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9426.794707][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9426.794710][    C2] RIP: 0033:0x7f471c970337
[ 9426.794716][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9426.794718][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9426.794720][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9426.794723][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9426.794724][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9426.794726][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9426.794728][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9452.512970][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9452.512974][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9452.512980][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9452.512992][    C2] Tainted: [L]=SOFTLOCKUP
[ 9452.512994][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9452.512996][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9452.513001][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9452.513004][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9452.513007][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9452.513010][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9452.513012][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9452.513014][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9452.513016][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9452.513018][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9452.513021][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9452.513025][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9452.513027][    C2] PKRU: 55555554
[ 9452.513028][    C2] Call Trace:
[ 9452.513031][    C2]  <TASK>
[ 9452.513035][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9452.513043][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9452.513048][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9452.513051][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9452.513055][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9452.513059][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9452.513064][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9452.513070][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9452.513073][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9452.513076][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9452.513081][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9452.513086][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9452.513091][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9452.513099][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9452.513107][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9452.513109][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9452.513113][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9452.513115][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9452.513118][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9452.513124][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9452.513128][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9452.513136][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9452.513139][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9452.513143][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9452.513149][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9452.513153][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9452.513159][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9452.513163][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9452.513170][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9452.513176][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9452.513180][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9452.513183][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9452.513187][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9452.513191][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9452.513198][ C2] ksys_write (fs/read_write.c:738) 
[ 9452.513202][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9452.513204][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9452.513211][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9452.513215][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9452.513219][    C2] RIP: 0033:0x7f471c970337
[ 9452.513227][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9452.513228][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9452.513231][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9452.513233][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9452.513235][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9452.513237][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9452.513239][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9467.294023][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9467.294282][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 9467.294487][    C2] NMI backtrace for cpu 2
| [ 9467.294511][    C2] Tainted: [L]=SOFTLOCKUP
[ 9467.294512][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9467.294515][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9467.294525][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9467.294528][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9467.294531][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9467.294534][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9467.294536][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9467.294538][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9467.294540][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9467.294542][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9467.294544][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9467.294548][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9467.294550][    C2] PKRU: 55555554
[ 9467.294552][    C2] Call Trace:
[ 9467.294554][    C2]  <TASK>
[ 9467.294558][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9467.294565][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9467.294570][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9467.294573][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9467.294577][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9467.294584][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9467.294588][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9467.294594][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9467.294597][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9467.294599][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9467.294604][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9467.294610][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9467.294615][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9467.294622][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9467.294629][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9467.294631][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9467.294634][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9467.294637][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9467.294640][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9467.294646][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9467.294650][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9467.294657][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9467.294661][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9467.294665][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9467.294671][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9467.294675][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9467.294680][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9467.294684][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9467.294691][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9467.294697][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9467.294700][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9467.294703][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9467.294707][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9467.294710][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9467.294717][ C2] ksys_write (fs/read_write.c:738) 
[ 9467.294721][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9467.294724][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9467.294730][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9467.294734][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9467.294738][    C2] RIP: 0033:0x7f471c970337
[ 9467.294746][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9467.294748][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9467.294751][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9467.294753][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9467.294755][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9467.294757][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9467.294759][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9492.512971][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9492.512976][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9492.512982][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9492.512995][    C2] Tainted: [L]=SOFTLOCKUP
[ 9492.512997][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9492.512999][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9492.513004][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9492.513008][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9492.513011][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9492.513013][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9492.513015][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9492.513017][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9492.513019][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9492.513022][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9492.513024][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9492.513028][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9492.513030][    C2] PKRU: 55555554
[ 9492.513031][    C2] Call Trace:
[ 9492.513034][    C2]  <TASK>
[ 9492.513038][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9492.513046][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9492.513051][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9492.513054][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9492.513057][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9492.513062][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9492.513066][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9492.513073][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9492.513076][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9492.513079][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9492.513083][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9492.513089][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9492.513094][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9492.513101][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9492.513109][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9492.513111][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9492.513115][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9492.513117][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9492.513120][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9492.513127][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9492.513131][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9492.513138][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9492.513142][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9492.513146][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9492.513151][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9492.513155][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9492.513160][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9492.513165][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9492.513172][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9492.513178][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9492.513182][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9492.513184][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9492.513188][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9492.513192][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9492.513199][ C2] ksys_write (fs/read_write.c:738) 
[ 9492.513203][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9492.513205][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9492.513212][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9492.513216][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9492.513220][    C2] RIP: 0033:0x7f471c970337
[ 9492.513229][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9492.513231][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9492.513233][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9492.513236][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9492.513238][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9492.513239][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9492.513241][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9504.796320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9504.796755][    C2] rcu: 2-....: (7274446 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=3262661
| [ 9504.797397][    C2] rcu: (t=7280279 jiffies g=1286133 q=126691 ncpus=4)
| [ 9504.797666][    C2] Tainted: [L]=SOFTLOCKUP
[ 9504.797667][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9504.797670][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9504.797680][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9504.797683][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9504.797687][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9504.797689][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9504.797691][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9504.797693][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9504.797695][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9504.797697][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9504.797700][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9504.797704][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9504.797706][    C2] PKRU: 55555554
[ 9504.797707][    C2] Call Trace:
[ 9504.797709][    C2]  <TASK>
[ 9504.797711][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9504.797718][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9504.797723][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9504.797726][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9504.797730][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9504.797737][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9504.797741][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9504.797747][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9504.797749][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9504.797752][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9504.797757][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9504.797762][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9504.797768][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9504.797774][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9504.797782][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9504.797784][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9504.797788][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9504.797790][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9504.797793][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9504.797799][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9504.797802][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9504.797810][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9504.797813][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9504.797817][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9504.797823][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9504.797827][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9504.797831][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9504.797836][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9504.797842][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9504.797849][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9504.797852][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9504.797855][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9504.797859][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9504.797862][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9504.797870][ C2] ksys_write (fs/read_write.c:738) 
[ 9504.797873][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9504.797875][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9504.797882][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9504.797886][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9504.797889][    C2] RIP: 0033:0x7f471c970337
[ 9504.797897][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9504.797900][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9504.797903][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9504.797905][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9504.797907][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9504.797909][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9504.797911][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9532.512970][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9532.512974][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9532.512980][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9532.512993][    C2] Tainted: [L]=SOFTLOCKUP
[ 9532.512995][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9532.512997][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9532.513002][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9532.513005][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9532.513008][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9532.513011][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9532.513013][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9532.513015][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9532.513017][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9532.513019][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9532.513022][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9532.513025][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9532.513027][    C2] PKRU: 55555554
[ 9532.513029][    C2] Call Trace:
[ 9532.513031][    C2]  <TASK>
[ 9532.513035][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9532.513042][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9532.513048][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9532.513051][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9532.513055][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9532.513060][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9532.513064][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9532.513070][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9532.513073][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9532.513076][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9532.513081][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9532.513087][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9532.513092][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9532.513099][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9532.513107][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9532.513109][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9532.513113][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9532.513115][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9532.513118][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9532.513124][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9532.513128][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9532.513136][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9532.513139][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9532.513143][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9532.513149][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9532.513153][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9532.513157][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9532.513162][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9532.513169][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9532.513175][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9532.513178][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9532.513181][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9532.513185][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9532.513189][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9532.513196][ C2] ksys_write (fs/read_write.c:738) 
[ 9532.513200][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9532.513202][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9532.513209][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9532.513213][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9532.513217][    C2] RIP: 0033:0x7f471c970337
[ 9532.513224][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9532.513226][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9532.513229][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9532.513231][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9532.513233][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9532.513235][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9532.513237][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9560.512972][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9560.512977][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9560.512983][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9560.512996][    C2] Tainted: [L]=SOFTLOCKUP
[ 9560.512997][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9560.513000][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9560.513004][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9560.513008][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9560.513011][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9560.513013][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9560.513015][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9560.513017][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9560.513019][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9560.513021][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9560.513024][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9560.513027][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9560.513030][    C2] PKRU: 55555554
[ 9560.513031][    C2] Call Trace:
[ 9560.513034][    C2]  <TASK>
[ 9560.513038][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9560.513046][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9560.513051][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9560.513054][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9560.513058][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9560.513063][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9560.513067][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9560.513074][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9560.513077][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9560.513080][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9560.513085][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9560.513090][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9560.513096][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9560.513103][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9560.513110][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9560.513113][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9560.513116][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9560.513119][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9560.513122][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9560.513128][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9560.513131][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9560.513139][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9560.513142][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9560.513146][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9560.513152][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9560.513156][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9560.513161][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9560.513166][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9560.513173][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9560.513179][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9560.513183][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9560.513186][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9560.513190][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9560.513193][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9560.513201][ C2] ksys_write (fs/read_write.c:738) 
[ 9560.513204][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9560.513207][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9560.513214][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9560.513218][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9560.513222][    C2] RIP: 0033:0x7f471c970337
[ 9560.513230][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9560.513232][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9560.513235][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9560.513237][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9560.513239][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9560.513242][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9560.513243][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9565.598630][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9565.598965][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 9565.599138][    C2] NMI backtrace for cpu 2
| [ 9565.599153][    C2] Tainted: [L]=SOFTLOCKUP
[ 9565.599155][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9565.599157][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 9565.599164][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 9565.599167][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9565.599171][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9565.599173][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9565.599175][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9565.599177][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9565.599179][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9565.599181][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9565.599184][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9565.599188][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9565.599190][    C2] PKRU: 55555554
[ 9565.599191][    C2] Call Trace:
[ 9565.599193][    C2]  <TASK>
[ 9565.599196][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9565.599204][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9565.599208][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9565.599211][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9565.599214][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9565.599220][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9565.599224][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9565.599230][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9565.599233][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9565.599236][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9565.599240][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9565.599246][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9565.599251][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9565.599257][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9565.599265][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9565.599267][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9565.599271][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9565.599273][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9565.599276][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9565.599282][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9565.599285][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9565.599293][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9565.599297][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9565.599301][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9565.599306][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9565.599310][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9565.599314][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9565.599320][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9565.599326][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9565.599332][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9565.599335][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9565.599338][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9565.599342][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9565.599345][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9565.599352][ C2] ksys_write (fs/read_write.c:738) 
[ 9565.599355][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9565.599358][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9565.599364][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9565.599368][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9565.599371][    C2] RIP: 0033:0x7f471c970337
[ 9565.599377][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9565.599379][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9565.599382][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9565.599384][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9565.599386][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9565.599388][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9565.599390][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9582.799320][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9582.799813][    C2] rcu: 2-....: (7352379 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=3298928
| [ 9582.800479][    C2] rcu: (t=7358282 jiffies g=1286133 q=128036 ncpus=4)
| [ 9582.800733][    C2] Tainted: [L]=SOFTLOCKUP
[ 9582.800735][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9582.800737][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9582.800744][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9582.800747][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9582.800751][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9582.800753][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9582.800755][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9582.800757][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9582.800759][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9582.800761][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9582.800764][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9582.800768][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9582.800770][    C2] PKRU: 55555554
[ 9582.800771][    C2] Call Trace:
[ 9582.800772][    C2]  <TASK>
[ 9582.800775][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9582.800782][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9582.800786][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9582.800789][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9582.800793][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9582.800799][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9582.800803][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9582.800809][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9582.800811][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9582.800814][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9582.800819][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9582.800824][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9582.800829][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9582.800836][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9582.800843][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9582.800846][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9582.800849][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9582.800851][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9582.800854][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9582.800860][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9582.800864][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9582.800871][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9582.800875][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9582.800878][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9582.800884][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9582.800887][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9582.800892][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9582.800896][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9582.800902][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9582.800908][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9582.800911][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9582.800914][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9582.800918][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9582.800921][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9582.800928][ C2] ksys_write (fs/read_write.c:738) 
[ 9582.800931][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9582.800934][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9582.800940][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9582.800944][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9582.800947][    C2] RIP: 0033:0x7f471c970337
[ 9582.800953][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9582.800955][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9582.800958][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9582.800960][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9582.800962][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9582.800964][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9582.800966][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9608.512971][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9608.512976][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9608.512982][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9608.512994][    C2] Tainted: [L]=SOFTLOCKUP
[ 9608.512996][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9608.512998][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 9608.513002][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d 3f e5 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d 3f e5 fd       	call   0xfffffffffde53f94
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d 3f e5 fd       	call   0xfffffffffde53f6a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 9608.513006][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9608.513009][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9608.513011][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9608.513013][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9608.513015][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9608.513017][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9608.513019][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9608.513022][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9608.513026][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9608.513028][    C2] PKRU: 55555554
[ 9608.513030][    C2] Call Trace:
[ 9608.513032][    C2]  <TASK>
[ 9608.513036][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9608.513043][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9608.513049][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9608.513051][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9608.513056][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9608.513060][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9608.513064][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9608.513071][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9608.513074][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9608.513077][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9608.513081][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9608.513087][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9608.513093][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9608.513099][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9608.513107][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9608.513109][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9608.513112][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9608.513115][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9608.513118][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9608.513124][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9608.513128][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9608.513135][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9608.513139][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9608.513143][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9608.513149][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9608.513153][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9608.513158][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9608.513163][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9608.513169][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9608.513176][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9608.513179][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9608.513182][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9608.513185][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9608.513189][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9608.513196][ C2] ksys_write (fs/read_write.c:738) 
[ 9608.513200][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9608.513203][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9608.513209][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9608.513213][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9608.513218][    C2] RIP: 0033:0x7f471c970337
[ 9608.513225][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9608.513227][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9608.513230][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9608.513232][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9608.513234][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9608.513236][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9608.513238][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9636.512970][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9636.512974][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9636.512981][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9636.512993][    C2] Tainted: [L]=SOFTLOCKUP
[ 9636.512995][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9636.512997][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9636.513002][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9636.513005][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9636.513009][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9636.513011][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9636.513013][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9636.513015][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9636.513016][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9636.513019][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9636.513021][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9636.513025][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9636.513027][    C2] PKRU: 55555554
[ 9636.513029][    C2] Call Trace:
[ 9636.513032][    C2]  <TASK>
[ 9636.513036][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9636.513043][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9636.513049][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9636.513051][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9636.513055][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9636.513060][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9636.513064][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9636.513070][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9636.513073][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9636.513076][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9636.513081][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9636.513086][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9636.513092][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9636.513099][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9636.513106][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9636.513109][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9636.513112][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9636.513115][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9636.513118][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9636.513123][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9636.513127][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9636.513134][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9636.513138][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9636.513142][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9636.513147][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9636.513151][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9636.513156][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9636.513161][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9636.513168][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9636.513174][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9636.513178][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9636.513180][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9636.513184][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9636.513188][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9636.513195][ C2] ksys_write (fs/read_write.c:738) 
[ 9636.513199][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9636.513201][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9636.513208][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9636.513212][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9636.513216][    C2] RIP: 0033:0x7f471c970337
[ 9636.513224][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9636.513226][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9636.513229][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9636.513231][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9636.513233][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9636.513235][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9636.513237][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9660.802321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9660.802735][    C2] rcu: 2-....: (7430326 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=3335705
| [ 9660.803264][    C2] rcu: (t=7436285 jiffies g=1286133 q=129059 ncpus=4)
| [ 9660.803607][    C2] Tainted: [L]=SOFTLOCKUP
[ 9660.803608][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9660.803610][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9660.803620][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9660.803624][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9660.803627][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9660.803629][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9660.803631][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9660.803633][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9660.803635][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9660.803637][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9660.803640][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9660.803643][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9660.803645][    C2] PKRU: 55555554
[ 9660.803647][    C2] Call Trace:
[ 9660.803648][    C2]  <TASK>
[ 9660.803650][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9660.803658][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9660.803662][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9660.803665][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9660.803669][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9660.803676][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9660.803679][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9660.803685][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9660.803688][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9660.803690][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9660.803695][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9660.803701][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9660.803706][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9660.803713][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9660.803720][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9660.803723][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9660.803726][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9660.803729][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9660.803732][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9660.803738][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9660.803741][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9660.803748][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9660.803752][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9660.803755][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9660.803761][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9660.803765][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9660.803769][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9660.803774][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9660.803780][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9660.803787][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9660.803790][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9660.803792][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9660.803796][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9660.803800][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9660.803807][ C2] ksys_write (fs/read_write.c:738) 
[ 9660.803811][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9660.803813][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9660.803820][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9660.803823][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9660.803827][    C2] RIP: 0033:0x7f471c970337
[ 9660.803835][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9660.803837][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9660.803840][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9660.803842][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9660.803844][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9660.803846][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9660.803848][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9663.901932][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9663.902190][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 9663.902371][    C2] NMI backtrace for cpu 2
| [ 9663.902385][    C2] Tainted: [L]=SOFTLOCKUP
[ 9663.902387][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9663.902389][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9663.902397][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9663.902400][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9663.902403][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9663.902406][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9663.902408][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9663.902410][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9663.902411][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9663.902413][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9663.902416][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9663.902419][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9663.902421][    C2] PKRU: 55555554
[ 9663.902423][    C2] Call Trace:
[ 9663.902425][    C2]  <TASK>
[ 9663.902428][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9663.902436][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9663.902440][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9663.902443][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9663.902446][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9663.902452][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9663.902456][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9663.902462][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9663.902465][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9663.902467][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9663.902472][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9663.902478][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9663.902483][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9663.902489][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9663.902496][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9663.902499][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9663.902502][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9663.902505][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9663.902508][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9663.902513][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9663.902516][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9663.902524][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9663.902527][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9663.902531][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9663.902536][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9663.902540][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9663.902544][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9663.902549][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9663.902555][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9663.902561][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9663.902564][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9663.902566][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9663.902570][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9663.902574][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9663.902581][ C2] ksys_write (fs/read_write.c:738) 
[ 9663.902584][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9663.902586][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9663.902592][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9663.902596][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9663.902600][    C2] RIP: 0033:0x7f471c970337
[ 9663.902606][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9663.902608][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9663.902611][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9663.902613][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9663.902615][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9663.902617][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9663.902619][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9688.512969][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9688.512973][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9688.512979][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9688.512992][    C2] Tainted: [L]=SOFTLOCKUP
[ 9688.512994][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9688.512996][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9688.513001][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9688.513004][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9688.513008][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9688.513010][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9688.513012][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9688.513014][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9688.513016][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9688.513018][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9688.513021][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9688.513024][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9688.513027][    C2] PKRU: 55555554
[ 9688.513028][    C2] Call Trace:
[ 9688.513030][    C2]  <TASK>
[ 9688.513034][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9688.513041][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9688.513047][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9688.513049][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9688.513053][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9688.513058][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9688.513062][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9688.513069][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9688.513072][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9688.513074][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9688.513079][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9688.513085][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9688.513090][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9688.513097][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9688.513105][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9688.513108][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9688.513111][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9688.513113][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9688.513116][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9688.513122][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9688.513126][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9688.513133][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9688.513137][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9688.513141][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9688.513146][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9688.513150][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9688.513155][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9688.513160][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9688.513167][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9688.513173][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9688.513177][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9688.513179][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9688.513183][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9688.513187][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9688.513194][ C2] ksys_write (fs/read_write.c:738) 
[ 9688.513197][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9688.513200][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9688.513207][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9688.513211][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9688.513215][    C2] RIP: 0033:0x7f471c970337
[ 9688.513222][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9688.513224][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9688.513227][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9688.513229][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9688.513231][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9688.513233][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9688.513235][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9716.512970][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9716.512975][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9716.512981][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9716.512994][    C2] Tainted: [L]=SOFTLOCKUP
[ 9716.512996][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9716.512998][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9716.513003][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9716.513006][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9716.513009][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9716.513011][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9716.513013][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9716.513015][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9716.513018][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9716.513020][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9716.513022][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9716.513026][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9716.513028][    C2] PKRU: 55555554
[ 9716.513030][    C2] Call Trace:
[ 9716.513032][    C2]  <TASK>
[ 9716.513036][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9716.513043][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9716.513048][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9716.513051][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9716.513055][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9716.513060][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9716.513065][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9716.513071][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9716.513074][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9716.513077][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9716.513081][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9716.513087][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9716.513092][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9716.513099][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9716.513107][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9716.513109][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9716.513112][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9716.513115][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9716.513118][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9716.513124][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9716.513128][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9716.513135][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9716.513138][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9716.513143][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9716.513148][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9716.513152][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9716.513157][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9716.513161][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9716.513168][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9716.513174][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9716.513178][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9716.513180][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9716.513184][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9716.513188][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9716.513195][ C2] ksys_write (fs/read_write.c:738) 
[ 9716.513198][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9716.513201][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9716.513207][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9716.513212][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9716.513215][    C2] RIP: 0033:0x7f471c970337
[ 9716.513222][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9716.513224][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9716.513227][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9716.513229][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9716.513231][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9716.513233][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9716.513235][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9738.805321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9738.805792][    C2] rcu: 2-....: (7508257 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=3372281
| [ 9738.806320][    C2] rcu: (t=7514288 jiffies g=1286133 q=130404 ncpus=4)
| [ 9738.806572][    C2] Tainted: [L]=SOFTLOCKUP
[ 9738.806573][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9738.806575][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9738.806584][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9738.806587][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9738.806591][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9738.806593][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9738.806595][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9738.806597][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9738.806599][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9738.806601][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9738.806603][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9738.806607][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9738.806609][    C2] PKRU: 55555554
[ 9738.806611][    C2] Call Trace:
[ 9738.806612][    C2]  <TASK>
[ 9738.806614][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9738.806622][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9738.806626][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9738.806629][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9738.806633][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9738.806640][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9738.806644][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9738.806650][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9738.806653][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9738.806655][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9738.806661][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9738.806666][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9738.806671][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9738.806679][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9738.806686][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9738.806689][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9738.806692][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9738.806694][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9738.806697][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9738.806703][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9738.806707][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9738.806714][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9738.806717][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9738.806721][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9738.806727][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9738.806731][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9738.806735][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9738.806740][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9738.806746][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9738.806752][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9738.806756][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9738.806758][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9738.806762][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9738.806765][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9738.806773][ C2] ksys_write (fs/read_write.c:738) 
[ 9738.806776][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9738.806779][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9738.806785][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9738.806789][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9738.806793][    C2] RIP: 0033:0x7f471c970337
[ 9738.806801][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9738.806802][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9738.806805][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9738.806807][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9738.806809][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9738.806811][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9738.806813][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9762.206615][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9762.206813][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 9762.206996][    C2] NMI backtrace for cpu 2
| [ 9762.207013][    C2] Tainted: [L]=SOFTLOCKUP
[ 9762.207014][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9762.207017][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 9762.207025][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 9762.207028][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 9762.207032][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 9762.207035][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 9762.207036][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 9762.207038][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 9762.207041][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 9762.207043][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9762.207046][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9762.207050][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9762.207052][    C2] PKRU: 55555554
[ 9762.207053][    C2] Call Trace:
[ 9762.207057][    C2]  <IRQ>
[ 9762.207058][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 9762.207067][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 9762.207074][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 9762.207079][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 9762.207085][    C2]  </IRQ>
[ 9762.207087][    C2]  <TASK>
[ 9762.207088][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 9762.207093][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9762.207098][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9762.207101][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9762.207104][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9762.207106][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9762.207107][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9762.207109][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9762.207111][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9762.207115][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 9762.207122][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9762.207129][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9762.207133][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9762.207135][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9762.207139][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9762.207146][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9762.207150][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9762.207156][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9762.207159][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9762.207161][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9762.207166][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9762.207172][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9762.207177][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9762.207184][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9762.207191][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9762.207193][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9762.207196][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9762.207199][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9762.207202][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9762.207208][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9762.207212][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9762.207219][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9762.207223][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9762.207227][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9762.207233][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9762.207236][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9762.207241][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9762.207246][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9762.207252][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9762.207258][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9762.207262][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9762.207264][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9762.207268][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9762.207272][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9762.207279][ C2] ksys_write (fs/read_write.c:738) 
[ 9762.207282][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9762.207284][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9762.207291][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9762.207294][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9762.207297][    C2] RIP: 0033:0x7f471c970337
[ 9762.207305][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9762.207307][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9762.207310][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9762.207312][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9762.207314][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9762.207317][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9762.207319][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9788.512971][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9788.512975][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9788.512981][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9788.512995][    C2] Tainted: [L]=SOFTLOCKUP
[ 9788.512996][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9788.512998][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 9788.513005][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 9788.513008][    C2] RSP: 0018:ffffc9000029f5b0 EFLAGS: 00000282
[ 9788.513011][    C2] RAX: ffff88800b85eb34 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9788.513014][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9788.513016][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9788.513018][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9788.513019][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9788.513022][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9788.513024][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9788.513028][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9788.513030][    C2] PKRU: 55555554
[ 9788.513031][    C2] Call Trace:
[ 9788.513035][    C2]  <TASK>
[ 9788.513038][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 9788.513044][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9788.513051][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9788.513055][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9788.513058][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9788.513062][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9788.513067][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9788.513071][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9788.513078][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9788.513081][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9788.513084][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9788.513088][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9788.513094][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9788.513099][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9788.513107][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9788.513114][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9788.513117][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9788.513120][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9788.513123][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9788.513126][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9788.513132][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9788.513135][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9788.513143][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9788.513146][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9788.513150][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9788.513156][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9788.513160][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9788.513165][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9788.513170][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9788.513177][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9788.513182][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9788.513186][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9788.513188][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9788.513192][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9788.513196][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9788.513203][ C2] ksys_write (fs/read_write.c:738) 
[ 9788.513206][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9788.513209][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9788.513216][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9788.513220][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9788.513224][    C2] RIP: 0033:0x7f471c970337
[ 9788.513231][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9788.513233][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9788.513236][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9788.513239][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9788.513241][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9788.513243][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9788.513245][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9816.512971][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9816.512976][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9816.512981][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9816.512994][    C2] Tainted: [L]=SOFTLOCKUP
[ 9816.512995][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9816.512997][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9816.513002][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9816.513006][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9816.513009][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9816.513011][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9816.513013][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9816.513016][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9816.513018][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9816.513020][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9816.513023][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9816.513026][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9816.513029][    C2] PKRU: 55555554
[ 9816.513030][    C2] Call Trace:
[ 9816.513032][    C2]  <TASK>
[ 9816.513036][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9816.513044][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9816.513050][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9816.513053][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9816.513057][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9816.513062][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9816.513066][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9816.513073][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9816.513075][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9816.513078][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9816.513083][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9816.513089][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9816.513094][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9816.513101][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9816.513108][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9816.513111][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9816.513114][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9816.513117][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9816.513120][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9816.513126][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9816.513130][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9816.513137][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9816.513141][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9816.513145][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9816.513151][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9816.513155][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9816.513160][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9816.513165][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9816.513171][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9816.513178][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9816.513181][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9816.513184][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9816.513188][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9816.513191][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9816.513198][ C2] ksys_write (fs/read_write.c:738) 
[ 9816.513202][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9816.513205][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9816.513211][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9816.513215][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9816.513220][    C2] RIP: 0033:0x7f471c970337
[ 9816.513227][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9816.513229][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9816.513232][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9816.513234][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9816.513236][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9816.513238][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9816.513240][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9816.808319][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9816.808719][    C2] rcu: 2-....: (7586183 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=3409095
| [ 9816.809358][    C2] rcu: (t=7592291 jiffies g=1286133 q=131833 ncpus=4)
| [ 9816.809669][    C2] Tainted: [L]=SOFTLOCKUP
[ 9816.809670][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9816.809672][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9816.809678][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9816.809681][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9816.809684][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9816.809686][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9816.809688][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9816.809690][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9816.809692][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9816.809694][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9816.809697][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9816.809701][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9816.809703][    C2] PKRU: 55555554
[ 9816.809704][    C2] Call Trace:
[ 9816.809706][    C2]  <TASK>
[ 9816.809708][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9816.809715][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9816.809719][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9816.809721][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9816.809725][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9816.809730][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9816.809733][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9816.809739][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9816.809742][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9816.809745][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9816.809750][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9816.809755][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9816.809760][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9816.809765][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9816.809772][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9816.809775][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9816.809778][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9816.809781][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9816.809784][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9816.809789][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9816.809792][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9816.809799][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9816.809803][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9816.809807][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9816.809811][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9816.809814][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9816.809818][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9816.809822][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9816.809828][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9816.809834][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9816.809837][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9816.809839][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9816.809843][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9816.809847][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9816.809854][ C2] ksys_write (fs/read_write.c:738) 
[ 9816.809857][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9816.809860][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9816.809866][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9816.809869][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9816.809872][    C2] RIP: 0033:0x7f471c970337
[ 9816.809877][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9816.809879][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9816.809882][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9816.809884][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9816.809886][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9816.809888][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9816.809890][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9844.512970][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9844.512974][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9844.512980][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9844.512992][    C2] Tainted: [L]=SOFTLOCKUP
[ 9844.512993][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9844.512995][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 9844.513002][ C2] Code: c7 c7 40 05 87 a3 5b 5d 41 5c e9 ab 6f 8e ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 40 05 87 a3    	mov    $0xa3870540,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 ab 6f 8e ff       	jmp    0xffffffffff8e6fba
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 9844.513005][    C2] RSP: 0018:ffffc9000029f5c8 EFLAGS: 00000202
[ 9844.513008][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9844.513011][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9844.513013][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9844.513015][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9844.513016][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9844.513019][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9844.513021][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9844.513025][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9844.513027][    C2] PKRU: 55555554
[ 9844.513028][    C2] Call Trace:
[ 9844.513030][    C2]  <TASK>
[ 9844.513032][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 9844.513039][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9844.513046][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9844.513050][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9844.513053][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9844.513057][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9844.513061][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9844.513066][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9844.513072][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9844.513075][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9844.513077][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9844.513082][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9844.513088][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9844.513093][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9844.513100][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9844.513107][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9844.513110][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9844.513113][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9844.513115][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9844.513118][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9844.513124][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9844.513128][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9844.513135][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9844.513139][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9844.513143][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9844.513149][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9844.513153][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9844.513157][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9844.513161][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9844.513168][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9844.513173][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9844.513177][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9844.513180][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9844.513183][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9844.513187][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9844.513194][ C2] ksys_write (fs/read_write.c:738) 
[ 9844.513197][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9844.513200][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9844.513207][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9844.513211][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9844.513215][    C2] RIP: 0033:0x7f471c970337
[ 9844.513222][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9844.513224][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9844.513227][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9844.513229][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9844.513231][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9844.513233][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9844.513235][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9860.510157][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9860.510359][   T17] Sending NMI from CPU 0 to CPUs 2:
| [ 9860.510539][    C2] NMI backtrace for cpu 2
| [ 9860.510557][    C2] Tainted: [L]=SOFTLOCKUP
[ 9860.510559][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9860.510561][ C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218) 
[ 9860.510569][ C2] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <e9> 3c 30 ad 02 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
All code
========
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00 
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	e9 3c 30 ad 02       	jmp    0x2ad306b		<-- trapping instruction
  2f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 00 
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 3c 30 ad 02       	jmp    0x2ad3041
   5:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 00 
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 9860.510572][    C2] RSP: 0018:ffffc90000218f30 EFLAGS: 00000046
[ 9860.510576][    C2] RAX: 0000000000000000 RBX: ffff888002a5fc40 RCX: 000000000000080b
[ 9860.510579][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888036123bc8
[ 9860.510581][    C2] RBP: ffff88800293e428 R08: 0000000000000001 R09: ffffed1006c24779
[ 9860.510583][    C2] R10: ffff888036123bcf R11: ffffc90000218ff8 R12: 0000000000000020
[ 9860.510585][    C2] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888002a5fc44
[ 9860.510587][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9860.510590][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9860.510594][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9860.510596][    C2] PKRU: 55555554
[ 9860.510597][    C2] Call Trace:
[ 9860.510600][    C2]  <IRQ>
[ 9860.510602][ C2] ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715) 
[ 9860.510610][ C2] handle_fasteoi_irq (kernel/irq/chip.c:645 kernel/irq/chip.c:708) 
[ 9860.510617][ C2] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:254 arch/x86/kernel/irq.c:266 arch/x86/kernel/irq.c:292) 
[ 9860.510624][ C2] common_interrupt (arch/x86/kernel/irq.c:285 (discriminator 14)) 
[ 9860.510629][    C2]  </IRQ>
[ 9860.510630][    C2]  <TASK>
[ 9860.510632][ C2] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) 
[ 9860.510636][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9860.510642][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9860.510645][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9860.510647][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9860.510649][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9860.510651][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9860.510653][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9860.510655][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9860.510659][ C2] ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 9860.510665][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9860.510671][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9860.510676][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9860.510678][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9860.510682][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9860.510689][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9860.510694][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9860.510700][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9860.510703][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9860.510705][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9860.510710][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9860.510716][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9860.510721][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9860.510727][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9860.510734][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9860.510736][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9860.510739][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9860.510742][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9860.510745][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9860.510751][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9860.510754][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9860.510762][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9860.510765][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9860.510770][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9860.510775][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9860.510779][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9860.510784][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9860.510789][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9860.510796][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9860.510802][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9860.510805][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9860.510808][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9860.510812][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9860.510816][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9860.510822][ C2] ksys_write (fs/read_write.c:738) 
[ 9860.510826][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9860.510828][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9860.510835][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9860.510839][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9860.510842][    C2] RIP: 0033:0x7f471c970337
[ 9860.510850][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9860.510851][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9860.510855][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9860.510856][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9860.510858][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9860.510860][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9860.510862][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9884.512969][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9884.512973][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9884.512979][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9884.512991][    C2] Tainted: [L]=SOFTLOCKUP
[ 9884.512992][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9884.512995][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9884.513000][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9884.513004][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9884.513007][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9884.513009][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9884.513011][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9884.513013][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9884.513015][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9884.513017][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9884.513020][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9884.513024][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9884.513026][    C2] PKRU: 55555554
[ 9884.513027][    C2] Call Trace:
[ 9884.513030][    C2]  <TASK>
[ 9884.513034][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9884.513041][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9884.513046][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9884.513049][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9884.513053][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9884.513057][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9884.513061][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9884.513068][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9884.513071][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9884.513073][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9884.513078][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9884.513084][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9884.513089][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9884.513096][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9884.513103][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9884.513105][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9884.513109][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9884.513111][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9884.513114][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9884.513120][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9884.513124][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9884.513132][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9884.513135][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9884.513139][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9884.513145][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9884.513149][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9884.513154][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9884.513159][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9884.513165][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9884.513171][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9884.513175][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9884.513177][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9884.513181][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9884.513185][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9884.513192][ C2] ksys_write (fs/read_write.c:738) 
[ 9884.513195][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9884.513198][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9884.513204][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9884.513208][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9884.513212][    C2] RIP: 0033:0x7f471c970337
[ 9884.513219][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9884.513221][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9884.513224][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9884.513226][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9884.513228][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9884.513230][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9884.513232][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9894.811321][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9894.811719][    C2] rcu: 2-....: (7664108 ticks this GP) idle=6284/1/0x4000000000000000 softirq=669483/669484 fqs=3445601
| [ 9894.812254][    C2] rcu: (t=7670294 jiffies g=1286133 q=133262 ncpus=4)
| [ 9894.812517][    C2] Tainted: [L]=SOFTLOCKUP
[ 9894.812519][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9894.812521][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9894.812529][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9894.812533][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9894.812536][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9894.812539][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9894.812541][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9894.812543][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9894.812545][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9894.812547][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9894.812550][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9894.812553][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9894.812555][    C2] PKRU: 55555554
[ 9894.812557][    C2] Call Trace:
[ 9894.812558][    C2]  <TASK>
[ 9894.812560][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9894.812568][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9894.812573][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9894.812576][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9894.812580][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9894.812587][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9894.812590][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9894.812596][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9894.812599][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9894.812602][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9894.812607][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9894.812613][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9894.812618][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9894.812624][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9894.812632][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9894.812634][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9894.812637][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9894.812640][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9894.812643][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9894.812649][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9894.812653][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9894.812660][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9894.812663][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9894.812667][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9894.812673][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9894.812677][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9894.812681][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9894.812686][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9894.812692][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9894.812698][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9894.812701][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9894.812704][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9894.812707][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9894.812711][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9894.812718][ C2] ksys_write (fs/read_write.c:738) 
[ 9894.812721][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9894.812724][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9894.812730][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9894.812734][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9894.812737][    C2] RIP: 0033:0x7f471c970337
[ 9894.812744][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9894.812745][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9894.812749][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9894.812751][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9894.812753][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9894.812755][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0
[ 9894.812757][    C2] R13: 00007ffc12f21734 R14: 0000000000000064 R15: 0000000000000064
| [ 9920.512972][ C2] hardirqs last disabled at (64229): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 kernel/locking/spinlock.c:162) 
| [ 9920.512976][ C2] softirqs last enabled at (64186): __mptcp_retrans (net/mptcp/protocol.c:2601) 
| [ 9920.512982][ C2] softirqs last disabled at (64188): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
| [ 9920.512995][    C2] Tainted: [L]=SOFTLOCKUP
[ 9920.512997][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9920.512999][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 9920.513004][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 9920.513007][    C2] RSP: 0018:ffffc9000029f5d0 EFLAGS: 00000202
[ 9920.513010][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffa2cd0f13
[ 9920.513012][    C2] RDX: ffffed100170bd67 RSI: 0000000000000004 RDI: ffff88800b85eb30
[ 9920.513014][    C2] RBP: ffff88800b85eb30 R08: 0000000000000000 R09: ffffed100170bd66
[ 9920.513016][    C2] R10: ffff88800b85eb33 R11: 0000000000000004 R12: 1ffff92000053ebc
[ 9920.513018][    C2] R13: 0000000000000003 R14: ffffed100170bd66 R15: ffffc9000029f610
[ 9920.513021][    C2] FS:  00007f471c86f740(0000) GS:ffff88809093e000(0000) knlGS:0000000000000000
[ 9920.513023][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9920.513027][    C2] CR2: 00007f471c97030d CR3: 000000000e258003 CR4: 0000000000772ef0
[ 9920.513029][    C2] PKRU: 55555554
[ 9920.513031][    C2] Call Trace:
[ 9920.513034][    C2]  <TASK>
[ 9920.513038][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 9920.513046][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 9920.513052][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9920.513054][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9920.513058][ C2] ? mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9920.513063][ C2] mptcp_try_fallback (net/mptcp/protocol.h:1233 net/mptcp/protocol.h:1226 net/mptcp/protocol.h:1260) 
[ 9920.513067][ C2] mptcp_sendmsg_frag (net/mptcp/protocol.c:1146 net/mptcp/protocol.c:1290) 
[ 9920.513074][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9920.513076][ C2] ? __pfx_mptcp_sendmsg_frag (net/mptcp/protocol.c:1161) 
[ 9920.513079][ C2] ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1215 net/mptcp/protocol.c:2610) 
[ 9920.513084][ C2] __mptcp_retrans (net/mptcp/protocol.c:2618) 
[ 9920.513090][ C2] ? __pfx___mptcp_retrans (net/mptcp/protocol.c:2556) 
[ 9920.513095][ C2] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 9920.513101][ C2] mptcp_release_cb (net/mptcp/protocol.c:3410) 
[ 9920.513109][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 9920.513111][ C2] ? __pfx_mptcp_release_cb (net/mptcp/protocol.c:3382) 
[ 9920.513114][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 9920.513117][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 9920.513120][ C2] ? release_sock (net/core/sock.c:3747) 
[ 9920.513126][ C2] release_sock (net/core/sock.c:3751 (discriminator 2)) 
[ 9920.513130][ C2] mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9920.513137][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 9920.513140][ C2] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 9920.513144][ C2] ? __pfx_ovl_copyattr (fs/overlayfs/util.c:1524) 
[ 9920.513150][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 9920.513154][ C2] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 9920.513159][ C2] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 9920.513164][ C2] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 9920.513170][ C2] ? ksys_write (fs/read_write.c:738) 
[ 9920.513177][ C2] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 9920.513180][ C2] ? ksys_write (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:729) 
[ 9920.513183][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 9920.513187][ C2] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 9920.513190][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:926) 
[ 9920.513198][ C2] ksys_write (fs/read_write.c:738) 
[ 9920.513202][ C2] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 9920.513204][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 9920.513211][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 9920.513215][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 9920.513219][    C2] RIP: 0033:0x7f471c970337
[ 9920.513228][ C2] Code: Unable to access opcode bytes at 0x7f471c97030d.

Code starting with the faulting instruction
===========================================
[ 9920.513229][    C2] RSP: 002b:00007ffc12f1f508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9920.513233][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f471c970337
[ 9920.513235][    C2] RDX: 0000000000001f9c RSI: 00007ffc12f21734 RDI: 0000000000000005
[ 9920.513237][    C2] RBP: 0000000000001f9c R08: 00007f471ca6b21c R09: 00007f471ca6b280
[ 9920.513239][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc12f216d0


Finger prints:
print_deadlock_bug:validate_chain:__lock_acquire:_raw_spin_lock_bh:mptcp_try_fallback
_raw_spin_lock_irqsave:__mptcp_retrans:__mptcp_retrans:__kasan_check_read:queued_spin_lock_slowpath
native_apic_msr_eoi:ioapic_ack_level:handle_fasteoi_irq:__common_interrupt:common_interrupt
__schedule:schedule:synchronize_rcu_expedited:namespace_unlock:put_mnt_ns
_raw_spin_lock_irqsave:__mptcp_retrans:__mptcp_retrans:queued_spin_lock_slowpath:do_raw_spin_lock
note_interrupt:handle_irq_event:handle_fasteoi_irq:__common_interrupt:common_interrupt
__kasan_check_read:queued_spin_lock_slowpath:do_raw_spin_lock:mptcp_try_fallback:mptcp_sendmsg_frag
vring_interrupt:vm_interrupt:__handle_irq_event_percpu:handle_irq_event:handle_fasteoi_irq
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:mptcp_try_fallback:mptcp_sendmsg_frag
_raw_spin_lock_irqsave:__mptcp_retrans:__mptcp_retrans:kasan_check_range:queued_spin_lock_slowpath
_raw_spin_unlock_irqrestore:_raw_spin_lock_irqsave:__mptcp_retrans:__mptcp_retrans:queued_spin_lock_slowpath
queued_spin_lock_slowpath:do_raw_spin_lock:mptcp_try_fallback:mptcp_sendmsg_frag:__mptcp_retrans
vm_interrupt:__handle_irq_event_percpu:handle_irq_event:handle_fasteoi_irq:__common_interrupt