======================================
| [   25.045623][  T234] 1 lock held by seq-ext_ipv4/234:
| [ 25.045769][ T234] #0: ffff88800630b798 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
| [   25.046038][  T234]
| [   25.046038][  T234] stack backtrace:
[   25.046632][  T234] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.046945][  T234] Call Trace:
[   25.047060][  T234]  <TASK>
[ 25.047142][ T234] dump_stack_lvl (lib/dump_stack.c:123) 
[ 25.047292][ T234] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 25.047441][ T234] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) 
[ 25.047592][ T234] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 25.047746][ T234] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) 
[ 25.047924][ T234] ? stack_depot_save_flags (lib/stackdepot.c:664) 
[ 25.048074][ T234] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 25.048219][ T234] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 25.048361][ T234] ? kasan_save_free_info (mm/kasan/generic.c:582) 
[ 25.048506][ T234] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 25.048652][ T234] ? kfree (mm/slub.c:4579 mm/slub.c:4727) 
[ 25.048763][ T234] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) 
[ 25.048943][ T234] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 25.049099][ T234] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) 
[ 25.049246][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.049393][ T234] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 25.049551][ T234] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 25.049698][ T234] ? 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) 
[ 25.049843][ T234] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 25.049963][ T234] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 25.050111][ T234] do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 25.050259][ T234] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) 
[ 25.050402][ T234] ? tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1737) 
[ 25.050568][ T234] ? release_sock (net/core/sock.c:3630) 
[ 25.050711][ T234] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) 
[ 25.050858][ T234] ? release_sock (net/core/sock.c:3630) 
[ 25.051005][ T234] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 25.051149][ T234] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) 
[ 25.051293][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.051440][ T234] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 25.051583][ T234] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 25.051727][ T234] ? 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) 
[ 25.051873][ T234] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 25.051990][ T234] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 25.052143][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.052289][ T234] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 25.052443][ T234] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 25.052588][ T234] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 25.052731][ T234] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 25.052885][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.053035][ T234] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 25.053177][ T234] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 25.053336][ T234] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) 
[ 25.053485][ T234] do_sock_getsockopt (net/socket.c:2396) 
[ 25.053630][ T234] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 25.053775][ T234] ? __pfx_do_sock_getsockopt (net/socket.c:2374) 
[ 25.053930][ T234] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 25.054045][ T234] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) 
[ 25.054197][ T234] ? __sys_setsockopt (net/socket.c:2360) 
[ 25.054346][ T234] ? __pfx___sys_getsockopt (net/socket.c:2415) 
[ 25.054492][ T234] ? __pfx___sys_socket (net/socket.c:1712) 
[ 25.054645][ T234] __x64_sys_getsockopt (net/socket.c:2432) 
[ 25.054791][ T234] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 25.054967][ T234] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.055113][ T234] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.055292][  T234] RIP: 0033:0x7efc10df846e
[ 25.055442][ T234] 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
[   25.055972][  T234] RSP: 002b:00007ffecf7ea1c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
[   25.056189][  T234] RAX: ffffffffffffffda RBX: 00007ffecf7ea500 RCX: 00007efc10df846e
[   25.056404][  T234] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 0000000000000009
[   25.056618][  T234] RBP: 00007ffecf7ea1e0 R08: 00007ffecf7ea1dc R09: 0000000000000064
[   25.056834][  T234] R10: 00007ffecf7ea1e0 R11: 0000000000000246 R12: 0000000000000009
[   25.057047][  T234] R13: 0000000000000064 R14: 0000000000000020 R15: 0000000000000064
| [   25.060384][  T241] 1 lock held by seq-ext_ipv4/241:
| [ 25.060533][ T241] #0: ffff88800630aa58 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) 
| [   25.060802][  T241]
| [   25.060802][  T241] stack backtrace:
[   25.061234][  T241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.061555][  T241] Call Trace:
[   25.061667][  T241]  <TASK>
[ 25.061745][ T241] dump_stack_lvl (lib/dump_stack.c:123) 
[ 25.061900][ T241] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 25.062052][ T241] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) 
[ 25.062202][ T241] tcp_v4_ao_lookup (net/ipv4/tcp_ao.c:200 net/ipv4/tcp_ao.c:222 net/ipv4/tcp_ao.c:720) 
[ 25.062352][ T241] tcp_connect (net/ipv4/tcp_output.c:4114) 
[ 25.062514][ T241] tcp_v4_connect (net/ipv4/tcp_ipv4.c:342) 
[ 25.062672][ T241] ? __pfx_tcp_v4_connect (net/ipv4/tcp_ipv4.c:220) 
[ 25.062828][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 25.062946][ T241] __inet_stream_connect (net/ipv4/af_inet.c:677) 
[ 25.063092][ T241] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 25.063276][ T241] inet_stream_connect (net/ipv4/af_inet.c:749) 
[ 25.063427][ T241] __sys_connect (net/socket.c:2071 net/socket.c:2088) 
[ 25.063576][ T241] ? __pfx___sys_connect (net/socket.c:2078) 
[ 25.063723][ T241] ? do_fcntl (fs/fcntl.c:473) 
[ 25.063838][ T241] ? __pfx_do_fcntl (fs/fcntl.c:443) 
[ 25.063992][ T241] ? __fget_files (fs/file.c:1009) 
[ 25.064140][ T241] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:316) 
[ 25.064330][ T241] __x64_sys_connect (net/socket.c:2095) 
[ 25.064477][ T241] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.064625][ T241] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.064807][  T241] RIP: 0033:0x7efc10df840b
[ 25.064959][ T241] 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
[   25.065467][  T241] RSP: 002b:00007efc0bffead0 EFLAGS: 00000293 ORIG_RAX: 000000000000002a
[   25.065688][  T241] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007efc10df840b
[   25.065909][  T241] RDX: 0000000000000010 RSI: 00007efc0bffecc0 RDI: 000000000000000a
[   25.066126][  T241] RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000000002
[   25.066345][  T241] R10: 00007efc10cb0598 R11: 0000000000000293 R12: 0000000000410210
[   25.066563][  T241] R13: 0000000000000005 R14: 00007efc0bffecc0 R15: 0000000000000000
| [   25.072635][  T241] 1 lock held by seq-ext_ipv4/241:
| [ 25.072784][ T241] #0: ffff88800630aa58 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) 
| [   25.073056][  T241]
| [   25.073056][  T241] stack backtrace:
[   25.073562][  T241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.073889][  T241] Call Trace:
[   25.074004][  T241]  <TASK>
[ 25.074086][ T241] dump_stack_lvl (lib/dump_stack.c:123) 
[ 25.074239][ T241] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 25.074392][ T241] tcp_ao_finish_connect (net/ipv4/tcp_ao.c:1183 (discriminator 7)) 
[ 25.074545][ T241] tcp_finish_connect (net/ipv4/tcp_input.c:6340) 
[ 25.074697][ T241] tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6576) 
[ 25.074884][ T241] ? 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) 
[ 25.075035][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 25.075153][ T241] ? __pfx_tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6455) 
[ 25.075339][ T241] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 25.075528][ T241] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 25.075677][ T241] ? 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)) 
[ 25.075790][ T241] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 25.075943][ T241] tcp_rcv_state_process (net/ipv4/tcp_input.c:6796) 
[ 25.076096][ T241] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 25.076245][ T241] ? __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) 
[ 25.076400][ T241] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6751) 
[ 25.076584][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 25.076706][ T241] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1945) 
[ 25.076862][ T241] __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) 
[ 25.077016][ T241] release_sock (net/core/sock.c:3633) 
[ 25.077165][ T241] inet_stream_connect (net/ipv4/af_inet.c:751) 
[ 25.077318][ T241] __sys_connect (net/socket.c:2071 net/socket.c:2088) 
[ 25.077474][ T241] ? __pfx___sys_connect (net/socket.c:2078) 
[ 25.077622][ T241] ? do_fcntl (fs/fcntl.c:473) 
[ 25.077735][ T241] ? __pfx_do_fcntl (fs/fcntl.c:443) 
[ 25.077886][ T241] ? __fget_files (fs/file.c:1009) 
[ 25.078037][ T241] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:316) 
[ 25.078229][ T241] __x64_sys_connect (net/socket.c:2095) 
[ 25.078383][ T241] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.078533][ T241] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.078721][  T241] RIP: 0033:0x7efc10df840b
[ 25.078876][ T241] 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
[   25.079394][  T241] RSP: 002b:00007efc0bffead0 EFLAGS: 00000293 ORIG_RAX: 000000000000002a
[   25.079619][  T241] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007efc10df840b
[   25.079843][  T241] RDX: 0000000000000010 RSI: 00007efc0bffecc0 RDI: 000000000000000a
[   25.080065][  T241] RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000000002
[   25.080285][  T241] R10: 00007efc10cb0598 R11: 0000000000000293 R12: 0000000000410210
[   25.080512][  T241] R13: 0000000000000005 R14: 00007efc0bffecc0 R15: 0000000000000000
| [   26.310771][  T241] 1 lock held by seq-ext_ipv4/241:
| [ 26.310916][ T241] #0: ffff888006309d18 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) 
| [   26.311255][  T241]
| [   26.311255][  T241] stack backtrace:
[   26.311677][  T241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   26.311982][  T241] Call Trace:
[   26.312091][  T241]  <TASK>
[ 26.312168][ T241] dump_stack_lvl (lib/dump_stack.c:123) 
[ 26.312319][ T241] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 26.312475][ T241] tcp_ao_set_repair (net/ipv4/tcp_ao.c:2399 (discriminator 7)) 
[ 26.312622][ T241] ? 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) 
[ 26.312768][ T241] ? __pfx_tcp_ao_set_repair (net/ipv4/tcp_ao.c:2371) 
[ 26.312920][ T241] do_tcp_setsockopt (net/ipv4/tcp.c:3924) 
[ 26.313063][ T241] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) 
[ 26.313205][ T241] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 26.313356][ T241] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 26.313503][ T241] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 26.313644][ T241] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 26.313787][ T241] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 26.313926][ T241] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 26.314067][ T241] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 26.314213][ T241] do_sock_setsockopt (net/socket.c:2334) 
[ 26.314356][ T241] ? __pfx_do_sock_setsockopt (net/socket.c:2303) 
[ 26.314507][ T241] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 26.314623][ T241] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) 
[ 26.314766][ T241] ? __pfx___sys_setsockopt (net/socket.c:2347) 
[ 26.314906][ T241] ? __fget_files (fs/file.c:1009) 
[ 26.315049][ T241] ? __pfx___sys_socket (net/socket.c:1712) 
[ 26.315199][ T241] __x64_sys_setsockopt (net/socket.c:2363) 
[ 26.315338][ T241] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 26.315513][ T241] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 26.315659][ T241] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   26.315837][  T241] RIP: 0033:0x7efc10df891e
[ 26.315986][ T241] 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
[   26.316475][  T241] RSP: 002b:00007efc0bffeaa8 EFLAGS: 00000202 ORIG_RAX: 0000000000000036
[   26.316690][  T241] RAX: ffffffffffffffda RBX: 000000000000631b RCX: 00007efc10df891e
[   26.316904][  T241] RDX: 000000000000002a RSI: 0000000000000006 RDI: 000000000000000a
[   26.317116][  T241] RBP: 0000000001fe000a R08: 0000000000000010 R09: 0000000000000064
[   26.317326][  T241] R10: 00007efc0bffeb20 R11: 0000000000000202 R12: 00007efc0bffecc0


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