======================================
| [   25.351630][  T233] 1 lock held by self-connect_ip/233:
| [ 25.351775][ T233] #0: ffff8880048d9098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
| [   25.352079][  T233]
| [   25.352079][  T233] stack backtrace:
[   25.352519][  T233] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.352832][  T233] Call Trace:
[   25.352946][  T233]  <TASK>
[ 25.353024][ T233] dump_stack_lvl (lib/dump_stack.c:123) 
[ 25.353172][ T233] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 25.353326][ T233] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) 
[ 25.353474][ T233] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 25.353627][ T233] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) 
[ 25.353806][ T233] ? stack_depot_save_flags (lib/stackdepot.c:664) 
[ 25.353955][ T233] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 25.354098][ T233] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 25.354243][ T233] ? kfree (mm/slub.c:4579 mm/slub.c:4727) 
[ 25.354352][ T233] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) 
[ 25.354527][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 25.354683][ T233] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) 
[ 25.354826][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.354975][ T233] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 25.355117][ T233] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 25.355264][ 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) 
[ 25.355408][ T233] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 25.355527][ T233] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 25.355668][ T233] do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 25.355817][ T233] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) 
[ 25.355961][ T233] ? tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1737) 
[ 25.356120][ T233] ? release_sock (net/core/sock.c:3630) 
[ 25.356268][ T233] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) 
[ 25.356413][ T233] ? release_sock (net/core/sock.c:3630) 
[ 25.356563][ T233] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 25.356712][ T233] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) 
[ 25.356857][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.357003][ T233] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 25.357150][ T233] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 25.357294][ 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) 
[ 25.357438][ T233] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 25.357553][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 25.357711][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.357863][ T233] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 25.358005][ T233] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 25.358149][ T233] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 25.358292][ T233] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 25.358436][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.358583][ T233] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 25.358726][ T233] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 25.358872][ T233] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) 
[ 25.359022][ T233] do_sock_getsockopt (net/socket.c:2396) 
[ 25.359168][ T233] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 25.359312][ T233] ? __pfx_do_sock_getsockopt (net/socket.c:2374) 
[ 25.359464][ T233] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 25.359578][ T233] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) 
[ 25.359726][ T233] ? __pfx___sys_getsockopt (net/socket.c:2415) 
[ 25.359871][ T233] ? __pfx_task_work_run (kernel/task_work.c:207) 
[ 25.360015][ T233] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:316) 
[ 25.360200][ T233] __x64_sys_getsockopt (net/socket.c:2432) 
[ 25.360345][ T233] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 25.360522][ T233] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.360672][ T233] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.360851][  T233] RIP: 0033:0x7fdb68ce346e
[ 25.361004][ 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
[   25.361510][  T233] RSP: 002b:00007ffcb79cee08 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
[   25.361728][  T233] RAX: ffffffffffffffda RBX: 00007ffcb79cf300 RCX: 00007fdb68ce346e
[   25.361944][  T233] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 0000000000000009
[   25.362158][  T233] RBP: 00007ffcb79cee20 R08: 00007ffcb79cee1c R09: 0000000000000064
[   25.362374][  T233] R10: 00007ffcb79cee20 R11: 0000000000000246 R12: 0000000000000009
[   25.362591][  T233] R13: 0000000000000064 R14: 0000000000000080 R15: 0000000000000064
| [   25.369613][  T233] 1 lock held by self-connect_ip/233:
| [ 25.369759][ T233] #0: ffff8880048d9098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) 
| [   25.370029][  T233]
| [   25.370029][  T233] stack backtrace:
[   25.370461][  T233] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.370782][  T233] Call Trace:
[   25.370895][  T233]  <TASK>
[ 25.370975][ T233] dump_stack_lvl (lib/dump_stack.c:123) 
[ 25.371130][ T233] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 25.371285][ T233] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) 
[ 25.371436][ T233] tcp_ao_do_lookup (net/ipv4/tcp_ao.c:200 net/ipv4/tcp_ao.c:222) 
[ 25.371580][ T233] tcp_connect (net/ipv4/tcp_output.c:4114) 
[ 25.371726][ T233] ? rt6_get_cookie (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/ip6_fib.h:312) 
[ 25.371882][ T233] tcp_v6_connect (net/ipv6/tcp_ipv6.c:333) 
[ 25.372034][ T233] ? __pfx_tcp_v6_connect (net/ipv6/tcp_ipv6.c:137) 
[ 25.372181][ T233] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) 
[ 25.372329][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.372484][ 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) 
[ 25.372629][ T233] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 25.372745][ T233] __inet_stream_connect (net/ipv4/af_inet.c:677) 
[ 25.372890][ T233] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 25.373074][ T233] inet_stream_connect (net/ipv4/af_inet.c:749) 
[ 25.373222][ T233] __sys_connect (net/socket.c:2071 net/socket.c:2088) 
[ 25.373371][ T233] ? __pfx___sys_connect (net/socket.c:2078) 
[ 25.373516][ T233] ? do_fcntl (fs/fcntl.c:473) 
[ 25.373635][ T233] ? __fget_files (fs/file.c:1009) 
[ 25.373793][ T233] __x64_sys_connect (net/socket.c:2095) 
[ 25.373939][ T233] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.374086][ T233] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.374265][  T233] RIP: 0033:0x7fdb68ce340b
[ 25.374419][ T233] 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
[   25.374925][  T233] RSP: 002b:00007ffcb79cef50 EFLAGS: 00000293 ORIG_RAX: 000000000000002a
[   25.375146][  T233] RAX: ffffffffffffffda RBX: 000000000000001c RCX: 00007fdb68ce340b
[   25.375363][  T233] RDX: 000000000000001c RSI: 00007ffcb79cefd0 RDI: 0000000000000009
[   25.375581][  T233] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[   25.375799][  T233] R10: 00007fdb68b9b598 R11: 0000000000000293 R12: 000000000040e08e
[   25.376017][  T233] R13: 0000000000000005 R14: 00007ffcb79cefd0 R15: 0000000030cf66a0
| [   25.380325][  T233] 1 lock held by self-connect_ip/233:
| [ 25.380478][ T233] #0: ffff8880048d9098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) 
| [   25.380751][  T233]
| [   25.380751][  T233] stack backtrace:
[   25.381196][  T233] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.381525][  T233] Call Trace:
[   25.381637][  T233]  <TASK>
[ 25.381716][ T233] dump_stack_lvl (lib/dump_stack.c:123) 
[ 25.381869][ T233] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 25.382019][ T233] tcp_ao_established (net/ipv4/tcp_ao.c:1166 (discriminator 7)) 
[ 25.382169][ T233] tcp_rcv_state_process (net/ipv4/tcp_input.c:6865 (discriminator 3)) 
[ 25.382321][ T233] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 25.382470][ T233] ? __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) 
[ 25.382618][ T233] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6751) 
[ 25.382802][ 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) 
[ 25.382950][ T233] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 25.383069][ T233] tcp_v6_do_rcv (net/ipv6/tcp_ipv6.c:1676) 
[ 25.383216][ T233] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 25.383403][ T233] __release_sock (net/core/sock.c:3079) 
[ 25.383556][ T233] release_sock (net/core/sock.c:3633) 
[ 25.383705][ T233] inet_stream_connect (net/ipv4/af_inet.c:751) 
[ 25.383854][ T233] __sys_connect (net/socket.c:2071 net/socket.c:2088) 
[ 25.384006][ T233] ? __pfx___sys_connect (net/socket.c:2078) 
[ 25.384152][ T233] ? do_fcntl (fs/fcntl.c:473) 
[ 25.384271][ T233] ? __fget_files (fs/file.c:1009) 
[ 25.384430][ T233] __x64_sys_connect (net/socket.c:2095) 
[ 25.384578][ T233] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.384727][ T233] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.384909][  T233] RIP: 0033:0x7fdb68ce340b
[ 25.385063][ T233] 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
[   25.385577][  T233] RSP: 002b:00007ffcb79cef50 EFLAGS: 00000293 ORIG_RAX: 000000000000002a
[   25.385798][  T233] RAX: ffffffffffffffda RBX: 000000000000001c RCX: 00007fdb68ce340b
[   25.386016][  T233] RDX: 000000000000001c RSI: 00007ffcb79cefd0 RDI: 0000000000000009
[   25.386238][  T233] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[   25.386457][  T233] R10: 00007fdb68b9b598 R11: 0000000000000293 R12: 000000000040e08e
[   25.386676][  T233] R13: 0000000000000005 R14: 00007ffcb79cefd0 R15: 0000000030cf66a0
| [   25.454343][  T233] 1 lock held by self-connect_ip/233:
| [ 25.454499][ T233] #0: ffff8880048dba98 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) 
| [   25.454793][  T233]
| [   25.454793][  T233] stack backtrace:
[   25.455208][  T233] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.455517][  T233] Call Trace:
[   25.455628][  T233]  <TASK>
[ 25.455705][ T233] dump_stack_lvl (lib/dump_stack.c:123) 
[ 25.455853][ T233] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 25.455998][ T233] tcp_ao_set_repair (net/ipv4/tcp_ao.c:2399 (discriminator 7)) 
[ 25.456139][ 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) 
[ 25.456285][ T233] ? __pfx_tcp_ao_set_repair (net/ipv4/tcp_ao.c:2371) 
[ 25.456439][ T233] do_tcp_setsockopt (net/ipv4/tcp.c:3924) 
[ 25.456583][ T233] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) 
[ 25.456721][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 25.456875][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.457020][ T233] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 25.457159][ T233] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 25.457303][ T233] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 25.457443][ T233] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 25.457585][ T233] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 25.457731][ T233] do_sock_setsockopt (net/socket.c:2334) 
[ 25.457872][ T233] ? __pfx_do_sock_setsockopt (net/socket.c:2303) 
[ 25.458026][ T233] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 25.458140][ T233] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) 
[ 25.458292][ T233] ? __pfx___sys_setsockopt (net/socket.c:2347) 
[ 25.458432][ T233] ? __fget_files (fs/file.c:1009) 
[ 25.458573][ T233] ? __pfx___sys_socket (net/socket.c:1712) 
[ 25.458720][ T233] __x64_sys_setsockopt (net/socket.c:2363) 
[ 25.458861][ T233] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 25.459035][ T233] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.459182][ T233] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.459357][  T233] RIP: 0033:0x7fdb68ce391e
[ 25.459503][ T233] 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
[   25.459989][  T233] RSP: 002b:00007ffcb79cef88 EFLAGS: 00000206 ORIG_RAX: 0000000000000036
[   25.460203][  T233] RAX: ffffffffffffffda RBX: 0000000000000034 RCX: 00007fdb68ce391e
[   25.460418][  T233] RDX: 000000000000002a RSI: 0000000000000006 RDI: 0000000000000009
[   25.460629][  T233] RBP: 0000000000000009 R08: 0000000000000010 R09: 0000000000000064
[   25.460838][  T233] R10: 00007ffcb79cefc0 R11: 0000000000000206 R12: 00007ffcb79cf1d0


Finger prints:
lockdep_rcu_suspicious:tcp_ao_do_lookup:tcp_connect:tcp_v6_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_established:tcp_rcv_state_process:tcp_v6_do_rcv:__release_sock
lockdep_rcu_suspicious:tcp_ao_set_repair:do_tcp_setsockopt:do_sock_setsockopt:__sys_setsockopt