======================================
| [   32.985879][  T233] 1 lock held by seq-ext_ipv4/233:
| [ 32.986267][ T233] #0: ffff888005b4b798 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
| [   32.986609][  T233]
| [   32.986609][  T233] stack backtrace:
[   32.987069][  T233] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   32.987402][  T233] Call Trace:
[   32.987529][  T233]  <TASK>
[ 32.987611][ T233] dump_stack_lvl (lib/dump_stack.c:123) 
[ 32.987779][ T233] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 32.987936][ T233] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) 
[ 32.988089][ T233] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 32.988253][ T233] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) 
[ 32.988442][ T233] ? stack_depot_save_flags (lib/stackdepot.c:664) 
[ 32.988597][ T233] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 32.988746][ T233] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 32.988898][ T233] ? kasan_save_free_info (mm/kasan/generic.c:582) 
[ 32.989050][ T233] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 32.989199][ T233] ? kfree (mm/slub.c:4579 mm/slub.c:4727) 
[ 32.989315][ T233] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) 
[ 32.989495][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 32.989658][ T233] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) 
[ 32.989809][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 32.989966][ T233] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 32.990138][ T233] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 32.990300][ T233] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 32.990451][ T233] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 32.990579][ T233] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 32.990745][ T233] do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 32.990905][ T233] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) 
[ 32.991078][ T233] ? tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1737) 
[ 32.991277][ T233] ? release_sock (net/core/sock.c:3630) 
[ 32.991430][ T233] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) 
[ 32.991626][ T233] ? release_sock (net/core/sock.c:3630) 
[ 32.991887][ T233] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 32.992054][ T233] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) 
[ 32.992270][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 32.992501][ T233] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 32.992718][ T233] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 32.992987][ T233] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 32.993224][ T233] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 32.993403][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 32.993682][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 32.993933][ T233] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 32.994171][ T233] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 32.994411][ T233] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 32.994658][ T233] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 32.994909][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 32.995162][ T233] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 32.995403][ T233] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 32.995653][ T233] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) 
[ 32.995927][ T233] do_sock_getsockopt (net/socket.c:2396) 
[ 32.996176][ T233] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 32.996428][ T233] ? __pfx_do_sock_getsockopt (net/socket.c:2374) 
[ 32.996692][ T233] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 32.996888][ T233] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) 
[ 32.997147][ T233] ? __pfx___sys_getsockopt (net/socket.c:2415) 
[ 32.997399][ T233] ? __pfx_task_work_run (kernel/task_work.c:207) 
[ 32.997647][ T233] ? __pfx___sys_socket (net/socket.c:1712) 
[ 32.997904][ T233] __x64_sys_getsockopt (net/socket.c:2432) 
[ 32.998156][ T233] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 32.998443][ T233] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 32.998684][ T233] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   32.999002][  T233] RIP: 0033:0x7f5eb7d7b46e
[ 32.999260][ T233] Code: 1f 44 00 00 48 8b 15 91 99 0a 00 f7 d8 64 89 02 b8 ff ff ff ff eb b8 0f 1f 44 00 00 f3 0f 1e fa 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 59
All code
========
   0:	1f                   	(bad)
   1:	44 00 00             	add    %r8b,(%rax)
   4:	48 8b 15 91 99 0a 00 	mov    0xa9991(%rip),%rdx        # 0xa999c
   b:	f7 d8                	neg    %eax
   d:	64 89 02             	mov    %eax,%fs:(%rdx)
  10:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
  15:	eb b8                	jmp    0xffffffffffffffcf
  17:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  1c:	f3 0f 1e fa          	endbr64
  20:	49 89 ca             	mov    %rcx,%r10
  23:	b8 37 00 00 00       	mov    $0x37,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 0a                	ja     0x3c
  32:	c3                   	ret
  33:	66 0f 1f 84 00 00 00 	nopw   0x0(%rax,%rax,1)
  3a:	00 00 
  3c:	48                   	rex.W
  3d:	8b                   	.byte 0x8b
  3e:	15                   	.byte 0x15
  3f:	59                   	pop    %rcx

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 0a                	ja     0x12
   8:	c3                   	ret
   9:	66 0f 1f 84 00 00 00 	nopw   0x0(%rax,%rax,1)
  10:	00 00 
  12:	48                   	rex.W
  13:	8b                   	.byte 0x8b
  14:	15                   	.byte 0x15
  15:	59                   	pop    %rcx
[   33.000076][  T233] RSP: 002b:00007ffc4dab1108 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
[   33.000420][  T233] RAX: ffffffffffffffda RBX: 00007ffc4dab1440 RCX: 00007f5eb7d7b46e
[   33.000852][  T233] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 0000000000000009
[   33.001231][  T233] RBP: 00007ffc4dab1120 R08: 00007ffc4dab111c R09: 0000000000000064
[   33.001594][  T233] R10: 00007ffc4dab1120 R11: 0000000000000246 R12: 0000000000000009
[   33.001953][  T233] R13: 0000000000000064 R14: 0000000000000020 R15: 0000000000000064
| [   33.008992][  T240] 1 lock held by seq-ext_ipv4/240:
| [ 33.009215][ T240] #0: ffff888005b4aa58 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) 
| [   33.009759][  T240]
| [   33.009759][  T240] stack backtrace:
[   33.010454][  T240] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   33.010997][  T240] Call Trace:
[   33.011183][  T240]  <TASK>
[ 33.011311][ T240] dump_stack_lvl (lib/dump_stack.c:123) 
[ 33.011562][ T240] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 33.011809][ T240] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) 
[ 33.012051][ T240] tcp_v4_ao_lookup (net/ipv4/tcp_ao.c:200 net/ipv4/tcp_ao.c:222 net/ipv4/tcp_ao.c:720) 
[ 33.012268][ T240] tcp_connect (net/ipv4/tcp_output.c:4114) 
[ 33.012475][ T240] tcp_v4_connect (net/ipv4/tcp_ipv4.c:342) 
[ 33.012691][ T240] ? __pfx_tcp_v4_connect (net/ipv4/tcp_ipv4.c:220) 
[ 33.012910][ T240] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 33.013087][ T240] __inet_stream_connect (net/ipv4/af_inet.c:677) 
[ 33.013296][ T240] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 33.013590][ T240] inet_stream_connect (net/ipv4/af_inet.c:749) 
[ 33.013826][ T240] __sys_connect (net/socket.c:2071 net/socket.c:2088) 
[ 33.014076][ T240] ? __pfx___sys_connect (net/socket.c:2078) 
[ 33.014317][ T240] ? do_fcntl (fs/fcntl.c:473) 
[ 33.014504][ T240] ? __pfx_do_fcntl (fs/fcntl.c:443) 
[ 33.014759][ T240] ? __fget_files (fs/file.c:1009) 
[ 33.015009][ T240] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:316) 
[ 33.015328][ T240] __x64_sys_connect (net/socket.c:2095) 
[ 33.015577][ T240] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 33.015828][ T240] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   33.016141][  T240] RIP: 0033:0x7f5eb7d7b40b
[ 33.016412][ T240] Code: 83 ec 18 89 54 24 0c 48 89 34 24 89 7c 24 08 e8 eb c7 f4 ff 8b 54 24 0c 48 8b 34 24 41 89 c0 8b 7c 24 08 b8 2a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 08 e8 41 c8 f4 ff 8b 44
All code
========
   0:	83 ec 18             	sub    $0x18,%esp
   3:	89 54 24 0c          	mov    %edx,0xc(%rsp)
   7:	48 89 34 24          	mov    %rsi,(%rsp)
   b:	89 7c 24 08          	mov    %edi,0x8(%rsp)
   f:	e8 eb c7 f4 ff       	call   0xfffffffffff4c7ff
  14:	8b 54 24 0c          	mov    0xc(%rsp),%edx
  18:	48 8b 34 24          	mov    (%rsp),%rsi
  1c:	41 89 c0             	mov    %eax,%r8d
  1f:	8b 7c 24 08          	mov    0x8(%rsp),%edi
  23:	b8 2a 00 00 00       	mov    $0x2a,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 35                	ja     0x67
  32:	44 89 c7             	mov    %r8d,%edi
  35:	89 44 24 08          	mov    %eax,0x8(%rsp)
  39:	e8 41 c8 f4 ff       	call   0xfffffffffff4c87f
  3e:	8b                   	.byte 0x8b
  3f:	44                   	rex.R

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 35                	ja     0x3d
   8:	44 89 c7             	mov    %r8d,%edi
   b:	89 44 24 08          	mov    %eax,0x8(%rsp)
   f:	e8 41 c8 f4 ff       	call   0xfffffffffff4c855
  14:	8b                   	.byte 0x8b
  15:	44                   	rex.R
[   33.017260][  T240] RSP: 002b:00007f5eb7426ad0 EFLAGS: 00000293 ORIG_RAX: 000000000000002a
[   33.017592][  T240] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007f5eb7d7b40b
[   33.017911][  T240] RDX: 0000000000000010 RSI: 00007f5eb7426cc0 RDI: 000000000000000a
[   33.018242][  T240] RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000000002
[   33.018583][  T240] R10: 00007f5eb7c33598 R11: 0000000000000293 R12: 0000000000410210
[   33.018955][  T240] R13: 0000000000000005 R14: 00007f5eb7426cc0 R15: 0000000000000000
| [   33.029286][  T240] 1 lock held by seq-ext_ipv4/240:
| [ 33.029675][ T240] #0: ffff888005b4aa58 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) 
| [   33.030276][  T240]
| [   33.030276][  T240] stack backtrace:
[   33.031184][  T240] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   33.031776][  T240] Call Trace:
[   33.031984][  T240]  <TASK>
[ 33.032130][ T240] dump_stack_lvl (lib/dump_stack.c:123) 
[ 33.032400][ T240] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 33.032672][ T240] tcp_ao_finish_connect (net/ipv4/tcp_ao.c:1183 (discriminator 7)) 
[ 33.032944][ T240] tcp_finish_connect (net/ipv4/tcp_input.c:6340) 
[ 33.033203][ T240] tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6576) 
[ 33.033454][ T240] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 33.033619][ T240] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 33.033761][ T240] ? __pfx_tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6455) 
[ 33.033955][ T240] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 33.034163][ T240] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 33.034396][ T240] ? ktime_get (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:395 (discriminator 4) kernel/time/timekeeping.c:403 (discriminator 4) kernel/time/timekeeping.c:850 (discriminator 4)) 
[ 33.034593][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 33.034767][ T240] tcp_rcv_state_process (net/ipv4/tcp_input.c:6796) 
[ 33.034927][ T240] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 33.035097][ T240] ? __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) 
[ 33.035267][ T240] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6751) 
[ 33.035549][ T240] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 33.035753][ T240] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1945) 
[ 33.036015][ T240] __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) 
[ 33.036197][ T240] release_sock (net/core/sock.c:3633) 
[ 33.036418][ T240] inet_stream_connect (net/ipv4/af_inet.c:751) 
[ 33.036683][ T240] __sys_connect (net/socket.c:2071 net/socket.c:2088) 
[ 33.036955][ T240] ? __pfx___sys_connect (net/socket.c:2078) 
[ 33.037217][ T240] ? do_fcntl (fs/fcntl.c:473) 
[ 33.037419][ T240] ? __pfx_do_fcntl (fs/fcntl.c:443) 
[ 33.037688][ T240] ? __fget_files (fs/file.c:1009) 
[ 33.037951][ T240] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:316) 
[ 33.038300][ T240] __x64_sys_connect (net/socket.c:2095) 
[ 33.038566][ T240] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 33.038830][ T240] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   33.039162][  T240] RIP: 0033:0x7f5eb7d7b40b
[ 33.039451][ T240] Code: 83 ec 18 89 54 24 0c 48 89 34 24 89 7c 24 08 e8 eb c7 f4 ff 8b 54 24 0c 48 8b 34 24 41 89 c0 8b 7c 24 08 b8 2a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 08 e8 41 c8 f4 ff 8b 44
All code
========
   0:	83 ec 18             	sub    $0x18,%esp
   3:	89 54 24 0c          	mov    %edx,0xc(%rsp)
   7:	48 89 34 24          	mov    %rsi,(%rsp)
   b:	89 7c 24 08          	mov    %edi,0x8(%rsp)
   f:	e8 eb c7 f4 ff       	call   0xfffffffffff4c7ff
  14:	8b 54 24 0c          	mov    0xc(%rsp),%edx
  18:	48 8b 34 24          	mov    (%rsp),%rsi
  1c:	41 89 c0             	mov    %eax,%r8d
  1f:	8b 7c 24 08          	mov    0x8(%rsp),%edi
  23:	b8 2a 00 00 00       	mov    $0x2a,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 35                	ja     0x67
  32:	44 89 c7             	mov    %r8d,%edi
  35:	89 44 24 08          	mov    %eax,0x8(%rsp)
  39:	e8 41 c8 f4 ff       	call   0xfffffffffff4c87f
  3e:	8b                   	.byte 0x8b
  3f:	44                   	rex.R

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 35                	ja     0x3d
   8:	44 89 c7             	mov    %r8d,%edi
   b:	89 44 24 08          	mov    %eax,0x8(%rsp)
   f:	e8 41 c8 f4 ff       	call   0xfffffffffff4c855
  14:	8b                   	.byte 0x8b
  15:	44                   	rex.R
[   33.040384][  T240] RSP: 002b:00007f5eb7426ad0 EFLAGS: 00000293 ORIG_RAX: 000000000000002a
[   33.040781][  T240] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007f5eb7d7b40b
[   33.041188][  T240] RDX: 0000000000000010 RSI: 00007f5eb7426cc0 RDI: 000000000000000a
[   33.041591][  T240] RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000000002
[   33.041984][  T240] R10: 00007f5eb7c33598 R11: 0000000000000293 R12: 0000000000410210
[   33.042369][  T240] R13: 0000000000000005 R14: 00007f5eb7426cc0 R15: 0000000000000000
| [   34.631159][  T240] 1 lock held by seq-ext_ipv4/240:
| [ 34.631333][ T240] #0: ffff888005b48298 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) 
| [   34.632198][  T240]
| [   34.632198][  T240] stack backtrace:
[   34.632688][  T240] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   34.633030][  T240] Call Trace:
[   34.633152][  T240]  <TASK>
[ 34.633239][ T240] dump_stack_lvl (lib/dump_stack.c:123) 
[ 34.633392][ T240] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 34.633546][ T240] tcp_ao_set_repair (net/ipv4/tcp_ao.c:2399 (discriminator 7)) 
[ 34.633725][ T240] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 34.633889][ T240] ? __pfx_tcp_ao_set_repair (net/ipv4/tcp_ao.c:2371) 
[ 34.634050][ T240] do_tcp_setsockopt (net/ipv4/tcp.c:3924) 
[ 34.634203][ T240] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) 
[ 34.634350][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 34.634505][ T240] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 34.634691][ T240] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 34.634872][ T240] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 34.635035][ T240] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 34.635191][ T240] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 34.635348][ T240] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 34.635510][ T240] do_sock_setsockopt (net/socket.c:2334) 
[ 34.635683][ T240] ? __pfx_do_sock_setsockopt (net/socket.c:2303) 
[ 34.635877][ T240] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 34.636002][ T240] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) 
[ 34.636151][ T240] ? __pfx___sys_setsockopt (net/socket.c:2347) 
[ 34.636302][ T240] ? __fget_files (fs/file.c:1009) 
[ 34.636447][ T240] ? __pfx___sys_socket (net/socket.c:1712) 
[ 34.636613][ T240] __x64_sys_setsockopt (net/socket.c:2363) 
[ 34.636772][ T240] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 34.636983][ T240] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 34.637137][ T240] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   34.637333][  T240] RIP: 0033:0x7f5eb7d7b91e
[ 34.637497][ T240] Code: 0f 1f 40 00 48 8b 15 e1 94 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b1 0f 1f 00 f3 0f 1e fa 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 a9
All code
========
   0:	0f 1f 40 00          	nopl   0x0(%rax)
   4:	48 8b 15 e1 94 0a 00 	mov    0xa94e1(%rip),%rdx        # 0xa94ec
   b:	f7 d8                	neg    %eax
   d:	64 89 02             	mov    %eax,%fs:(%rdx)
  10:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
  17:	eb b1                	jmp    0xffffffffffffffca
  19:	0f 1f 00             	nopl   (%rax)
  1c:	f3 0f 1e fa          	endbr64
  20:	49 89 ca             	mov    %rcx,%r10
  23:	b8 36 00 00 00       	mov    $0x36,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 0a                	ja     0x3c
  32:	c3                   	ret
  33:	66 0f 1f 84 00 00 00 	nopw   0x0(%rax,%rax,1)
  3a:	00 00 
  3c:	48                   	rex.W
  3d:	8b                   	.byte 0x8b
  3e:	15                   	.byte 0x15
  3f:	a9                   	.byte 0xa9

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 0a                	ja     0x12
   8:	c3                   	ret
   9:	66 0f 1f 84 00 00 00 	nopw   0x0(%rax,%rax,1)
  10:	00 00 
  12:	48                   	rex.W
  13:	8b                   	.byte 0x8b
  14:	15                   	.byte 0x15
  15:	a9                   	.byte 0xa9
[   34.638110][  T240] RSP: 002b:00007f5eb7426aa8 EFLAGS: 00000202 ORIG_RAX: 0000000000000036
[   34.638334][  T240] RAX: ffffffffffffffda RBX: 000000000000631b RCX: 00007f5eb7d7b91e
[   34.638625][  T240] RDX: 000000000000002a RSI: 0000000000000006 RDI: 000000000000000a
[   34.638913][  T240] RBP: 0000000001fe000a R08: 0000000000000010 R09: 0000000000000064
[   34.639157][  T240] R10: 00007f5eb7426b20 R11: 0000000000000202 R12: 00007f5eb7426cc0


Finger prints:
lockdep_rcu_suspicious:tcp_v4_ao_lookup:tcp_connect:tcp_v4_connect:__inet_stream_connect
lockdep_rcu_suspicious:tcp_ao_copy_mkts_to_user:do_tcp_getsockopt:tcp_getsockopt:do_sock_getsockopt
lockdep_rcu_suspicious:tcp_ao_finish_connect:tcp_finish_connect:tcp_rcv_synsent_state_process:tcp_rcv_state_process
lockdep_rcu_suspicious:tcp_ao_set_repair:do_tcp_setsockopt:do_sock_setsockopt:__sys_setsockopt