======================================
| [   27.999569][  T233] 1 lock held by rst_ipv4/233:
| [ 27.999744][ T233] #0: ffff88800552b798 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
| [   28.000075][  T233]
| [   28.000075][  T233] stack backtrace:
[   28.000931][  T233] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   28.001302][  T233] Call Trace:
[   28.001433][  T233]  <TASK>
[ 28.001520][ T233] dump_stack_lvl (lib/dump_stack.c:123) 
[ 28.001691][ T233] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 28.001864][ T233] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) 
[ 28.002035][ T233] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 28.002211][ T233] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) 
[ 28.002431][ T233] ? stack_depot_save_flags (lib/stackdepot.c:664) 
[ 28.002603][ T233] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 28.002767][ T233] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 28.002925][ T233] ? kasan_save_free_info (mm/kasan/generic.c:582) 
[ 28.003089][ T233] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 28.003274][ T233] ? kfree (mm/slub.c:4579 mm/slub.c:4727) 
[ 28.003418][ T233] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) 
[ 28.003619][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 28.003792][ T233] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) 
[ 28.003969][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 28.004138][ T233] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 28.004313][ T233] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 28.004478][ 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) 
[ 28.004642][ T233] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 28.004774][ T233] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 28.004934][ T233] do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 28.005099][ T233] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) 
[ 28.005277][ T233] ? tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1737) 
[ 28.005456][ T233] ? release_sock (net/core/sock.c:3630) 
[ 28.005631][ T233] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) 
[ 28.006018][ T233] ? release_sock (net/core/sock.c:3630) 
[ 28.006193][ T233] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 28.006376][ T233] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) 
[ 28.006558][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 28.006722][ T233] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 28.006896][ T233] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 28.007057][ 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) 
[ 28.007241][ T233] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 28.007377][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 28.007560][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 28.007723][ T233] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 28.007878][ T233] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 28.008058][ T233] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 28.008224][ T233] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 28.008398][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 28.008557][ T233] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 28.008731][ T233] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 28.008897][ T233] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) 
[ 28.009060][ T233] do_sock_getsockopt (net/socket.c:2396) 
[ 28.009242][ T233] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 28.009407][ T233] ? __pfx_do_sock_getsockopt (net/socket.c:2374) 
[ 28.009592][ T233] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 28.009715][ T233] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) 
[ 28.009886][ T233] ? __pfx___sys_getsockopt (net/socket.c:2415) 
[ 28.010044][ T233] ? __pfx_task_work_run (kernel/task_work.c:207) 
[ 28.010235][ T233] ? __pfx___sys_socket (net/socket.c:1712) 
[ 28.010421][ T233] __x64_sys_getsockopt (net/socket.c:2432) 
[ 28.010580][ T233] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 28.010799][ T233] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 28.010961][ T233] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   28.011170][  T233] RIP: 0033:0x7fb760a0046e
[ 28.011400][ 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
[   28.011963][  T233] RSP: 002b:00007fffd0962ad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
[   28.012202][  T233] RAX: ffffffffffffffda RBX: 00007fffd0962da0 RCX: 00007fb760a0046e
[   28.012447][  T233] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 000000000000000a
[   28.012696][  T233] RBP: 00007fffd0962af0 R08: 00007fffd0962aec R09: 0000000000000064
[   28.012941][  T233] R10: 00007fffd0962af0 R11: 0000000000000246 R12: 000000000000000a
[   28.013197][  T233] R13: 0000000000000064 R14: 0000000000000020 R15: 0000000000000064
| [   28.019223][  T240] 1 lock held by rst_ipv4/240:
| [ 28.019405][ T240] #0: ffff88800552aa58 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) 
| [   28.019754][  T240]
| [   28.019754][  T240] stack backtrace:
[   28.020263][  T240] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   28.020664][  T240] Call Trace:
[   28.020803][  T240]  <TASK>
[ 28.020902][ T240] dump_stack_lvl (lib/dump_stack.c:123) 
[ 28.021091][ T240] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 28.021296][ T240] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) 
[ 28.021481][ T240] tcp_v4_ao_lookup (net/ipv4/tcp_ao.c:200 net/ipv4/tcp_ao.c:222 net/ipv4/tcp_ao.c:720) 
[ 28.021664][ T240] tcp_connect (net/ipv4/tcp_output.c:4114) 
[ 28.021860][ T240] tcp_v4_connect (net/ipv4/tcp_ipv4.c:342) 
[ 28.022054][ T240] ? __pfx_tcp_v4_connect (net/ipv4/tcp_ipv4.c:220) 
[ 28.022246][ T240] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 28.022393][ T240] __inet_stream_connect (net/ipv4/af_inet.c:677) 
[ 28.022573][ T240] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 28.022802][ T240] inet_stream_connect (net/ipv4/af_inet.c:749) 
[ 28.022984][ T240] __sys_connect (net/socket.c:2071 net/socket.c:2088) 
[ 28.023176][ T240] ? __pfx___sys_connect (net/socket.c:2078) 
[ 28.023359][ T240] ? do_fcntl (fs/fcntl.c:473) 
[ 28.023498][ T240] ? __pfx_do_fcntl (fs/fcntl.c:443) 
[ 28.023683][ T240] ? __fget_files (fs/file.c:1009) 
[ 28.023874][ T240] ? __pfx___sys_socket (net/socket.c:1712) 
[ 28.024069][ T240] __x64_sys_connect (net/socket.c:2095) 
[ 28.024263][ T240] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 28.024447][ T240] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   28.024667][  T240] RIP: 0033:0x7fb760a0040b
[ 28.024852][ 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
[   28.025480][  T240] RSP: 002b:00007fb75bffed80 EFLAGS: 00000293 ORIG_RAX: 000000000000002a
[   28.025752][  T240] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007fb760a0040b
[   28.026017][  T240] RDX: 0000000000000010 RSI: 00007fb75bffee00 RDI: 0000000000000009
[   28.026355][  T240] RBP: 0000000000000009 R08: 0000000000000000 R09: 00000000ffffffff
[   28.026696][  T240] R10: 00007fb7608b8598 R11: 0000000000000293 R12: 0000000000410978
[   28.026967][  T240] R13: 0000000000000005 R14: 00007fb75bffee00 R15: 000000000000621b
| [   28.033814][  T240] 1 lock held by rst_ipv4/240:
| [ 28.034054][ T240] #0: ffff88800552aa58 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) 
| [   28.034386][  T240]
| [   28.034386][  T240] stack backtrace:
[   28.034941][  T240] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   28.035337][  T240] Call Trace:
[   28.035463][  T240]  <TASK>
[ 28.035554][ T240] dump_stack_lvl (lib/dump_stack.c:123) 
[ 28.035729][ T240] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 28.035897][ T240] tcp_ao_finish_connect (net/ipv4/tcp_ao.c:1183 (discriminator 7)) 
[ 28.036061][ T240] tcp_finish_connect (net/ipv4/tcp_input.c:6340) 
[ 28.036232][ T240] tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6576) 
[ 28.036437][ 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) 
[ 28.036727][ T240] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 28.036855][ T240] ? __pfx_tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6455) 
[ 28.037084][ T240] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 28.037297][ T240] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 28.037464][ 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)) 
[ 28.037601][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 28.037783][ T240] tcp_rcv_state_process (net/ipv4/tcp_input.c:6796) 
[ 28.037971][ T240] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 28.038136][ T240] ? __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) 
[ 28.038344][ T240] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6751) 
[ 28.038544][ T240] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 28.038698][ T240] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1945) 
[ 28.038867][ T240] __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) 
[ 28.039053][ T240] release_sock (net/core/sock.c:3633) 
[ 28.039218][ T240] inet_stream_connect (net/ipv4/af_inet.c:751) 
[ 28.039409][ T240] __sys_connect (net/socket.c:2071 net/socket.c:2088) 
[ 28.039584][ T240] ? __pfx___sys_connect (net/socket.c:2078) 
[ 28.039751][ T240] ? do_fcntl (fs/fcntl.c:473) 
[ 28.039877][ T240] ? __pfx_do_fcntl (fs/fcntl.c:443) 
[ 28.040045][ T240] ? __fget_files (fs/file.c:1009) 
[ 28.040213][ T240] ? __pfx___sys_socket (net/socket.c:1712) 
[ 28.040410][ T240] __x64_sys_connect (net/socket.c:2095) 
[ 28.040577][ T240] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 28.040773][ T240] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   28.040989][  T240] RIP: 0033:0x7fb760a0040b
[ 28.041177][ 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
[   28.041763][  T240] RSP: 002b:00007fb75bffed80 EFLAGS: 00000293 ORIG_RAX: 000000000000002a
[   28.042037][  T240] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007fb760a0040b
[   28.042308][  T240] RDX: 0000000000000010 RSI: 00007fb75bffee00 RDI: 0000000000000009
[   28.042597][  T240] RBP: 0000000000000009 R08: 0000000000000000 R09: 00000000ffffffff
[   28.042843][  T240] R10: 00007fb7608b8598 R11: 0000000000000293 R12: 0000000000410978
[   28.043105][  T240] R13: 0000000000000005 R14: 00007fb75bffee00 R15: 000000000000621b
| [   29.103627][  T240] 1 lock held by rst_ipv4/240:
| [ 29.103909][ T240] #0: ffff888008422a58 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) 
| [   29.104355][  T240]
| [   29.104355][  T240] stack backtrace:
[   29.105009][  T240] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   29.105523][  T240] Call Trace:
[   29.105699][  T240]  <TASK>
[ 29.105819][ T240] dump_stack_lvl (lib/dump_stack.c:123) 
[ 29.106049][ T240] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 29.106280][ T240] tcp_ao_set_repair (net/ipv4/tcp_ao.c:2399 (discriminator 7)) 
[ 29.106504][ 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) 
[ 29.106733][ T240] ? __pfx_tcp_ao_set_repair (net/ipv4/tcp_ao.c:2371) 
[ 29.106979][ T240] do_tcp_setsockopt (net/ipv4/tcp.c:3924) 
[ 29.107217][ T240] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) 
[ 29.107443][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 29.107686][ T240] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 29.107911][ T240] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 29.108134][ T240] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 29.108369][ T240] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 29.108591][ T240] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 29.108812][ T240] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 29.109053][ T240] do_sock_setsockopt (net/socket.c:2334) 
[ 29.109287][ T240] ? __pfx_do_sock_setsockopt (net/socket.c:2303) 
[ 29.109532][ T240] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 29.109709][ T240] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) 
[ 29.109945][ T240] ? __pfx___sys_setsockopt (net/socket.c:2347) 
[ 29.110177][ T240] ? __fget_files (fs/file.c:1009) 
[ 29.110402][ T240] ? __pfx___sys_socket (net/socket.c:1712) 
[ 29.110643][ T240] __x64_sys_setsockopt (net/socket.c:2363) 
[ 29.110866][ T240] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 29.111152][ T240] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 29.111391][ T240] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   29.111688][  T240] RIP: 0033:0x7fb760a0091e
[ 29.111935][ 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
[   29.112733][  T240] RSP: 002b:00007fb75bffe9b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000036
[   29.113119][  T240] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb760a0091e
[   29.113482][  T240] RDX: 000000000000002a RSI: 0000000000000006 RDI: 000000000000000a
[   29.114087][  T240] RBP: 000000000000000a R08: 0000000000000010 R09: 0000000000000064
[   29.114300][  T240] R10: 00007fb75bffe9d0 R11: 0000000000000206 R12: 00007fb75bffeb10


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