======================================
| [   26.746946][  T241] 1 lock held by seq-ext_ipv4/241:
| [ 26.747094][ T241] #0: ffff88800595aa58 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
| [   26.747392][  T241]
| [   26.747392][  T241] stack backtrace:
[   26.747881][  T241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   26.748207][  T241] Call Trace:
[   26.748329][  T241]  <TASK>
[ 26.748408][ T241] dump_stack_lvl (lib/dump_stack.c:123) 
[ 26.748562][ T241] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 26.748722][ T241] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) 
[ 26.748877][ T241] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 26.749034][ T241] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) 
[ 26.749215][ T241] ? stack_depot_save_flags (lib/stackdepot.c:664) 
[ 26.749369][ T241] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 26.749521][ T241] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 26.749674][ T241] ? kasan_save_free_info (mm/kasan/generic.c:582) 
[ 26.749819][ T241] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 26.749964][ T241] ? kfree (mm/slub.c:4579 mm/slub.c:4727) 
[ 26.750080][ T241] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) 
[ 26.750269][ T241] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 26.750428][ T241] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) 
[ 26.750574][ T241] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 26.750737][ T241] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 26.750887][ T241] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 26.751042][ 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) 
[ 26.751205][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 26.751343][ T241] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 26.751506][ T241] do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 26.751664][ T241] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) 
[ 26.751827][ T241] ? tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1737) 
[ 26.751988][ T241] ? release_sock (net/core/sock.c:3630) 
[ 26.752139][ T241] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) 
[ 26.752282][ T241] ? release_sock (net/core/sock.c:3630) 
[ 26.752432][ T241] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 26.752580][ T241] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) 
[ 26.752733][ T241] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 26.752890][ T241] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 26.753037][ T241] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 26.753185][ 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) 
[ 26.753329][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 26.753449][ T241] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 26.753606][ T241] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 26.753754][ T241] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 26.753897][ T241] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 26.754047][ T241] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 26.754192][ T241] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 26.754342][ T241] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 26.754491][ T241] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 26.754638][ T241] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 26.754788][ T241] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) 
[ 26.754937][ T241] do_sock_getsockopt (net/socket.c:2396) 
[ 26.755083][ T241] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 26.755235][ T241] ? __pfx_do_sock_getsockopt (net/socket.c:2374) 
[ 26.755392][ T241] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 26.755511][ T241] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) 
[ 26.755668][ T241] ? __pfx___sys_getsockopt (net/socket.c:2415) 
[ 26.755815][ T241] ? __pfx_task_work_run (kernel/task_work.c:207) 
[ 26.755972][ T241] __x64_sys_getsockopt (net/socket.c:2432) 
[ 26.756117][ T241] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 26.756300][ T241] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 26.756450][ T241] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   26.756640][  T241] RIP: 0033:0x7f0ac06e446e
[ 26.756800][ T241] 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
[   26.757307][  T241] RSP: 002b:00007f0abfd8f988 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
[   26.757527][  T241] RAX: ffffffffffffffda RBX: 00007f0abfd8fcc0 RCX: 00007f0ac06e446e
[   26.757758][  T241] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 000000000000000a
[   26.757975][  T241] RBP: 00007f0abfd8f9a0 R08: 00007f0abfd8f99c R09: 0000000000000064
[   26.758188][  T241] R10: 00007f0abfd8f9a0 R11: 0000000000000246 R12: 000000000000000a
[   26.758412][  T241] R13: 0000000000000064 R14: 0000000000000020 R15: 0000000000000064
| [   26.761885][  T241] 1 lock held by seq-ext_ipv4/241:
| [ 26.762032][ T241] #0: ffff88800595aa58 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) 
| [   26.762401][  T241]
| [   26.762401][  T241] stack backtrace:
[   26.762851][  T241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   26.763178][  T241] Call Trace:
[   26.763312][  T241]  <TASK>
[ 26.763396][ T241] dump_stack_lvl (lib/dump_stack.c:123) 
[ 26.763549][ T241] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 26.763706][ T241] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) 
[ 26.763860][ T241] tcp_v4_ao_lookup (net/ipv4/tcp_ao.c:200 net/ipv4/tcp_ao.c:222 net/ipv4/tcp_ao.c:720) 
[ 26.764019][ T241] tcp_connect (net/ipv4/tcp_output.c:4114) 
[ 26.764188][ T241] tcp_v4_connect (net/ipv4/tcp_ipv4.c:342) 
[ 26.764352][ T241] ? __pfx_tcp_v4_connect (net/ipv4/tcp_ipv4.c:220) 
[ 26.764507][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 26.764631][ T241] __inet_stream_connect (net/ipv4/af_inet.c:677) 
[ 26.764784][ T241] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 26.764968][ T241] inet_stream_connect (net/ipv4/af_inet.c:749) 
[ 26.765121][ T241] __sys_connect (net/socket.c:2071 net/socket.c:2088) 
[ 26.765272][ T241] ? __pfx___sys_connect (net/socket.c:2078) 
[ 26.765420][ T241] ? do_fcntl (fs/fcntl.c:473) 
[ 26.765537][ T241] ? __pfx_do_fcntl (fs/fcntl.c:443) 
[ 26.765697][ T241] ? __fget_files (fs/file.c:1009) 
[ 26.765857][ T241] __x64_sys_connect (net/socket.c:2095) 
[ 26.766009][ T241] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 26.766166][ T241] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   26.766352][  T241] RIP: 0033:0x7f0ac06e440b
[ 26.766508][ 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
[   26.767030][  T241] RSP: 002b:00007f0abfd8fad0 EFLAGS: 00000293 ORIG_RAX: 000000000000002a
[   26.767262][  T241] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007f0ac06e440b
[   26.767483][  T241] RDX: 0000000000000010 RSI: 00007f0abfd8fcc0 RDI: 000000000000000a
[   26.767705][  T241] RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000000002
[   26.767936][  T241] R10: 00007f0ac059c598 R11: 0000000000000293 R12: 0000000000410210
[   26.768154][  T241] R13: 0000000000000005 R14: 00007f0abfd8fcc0 R15: 0000000000000000
| [   26.774449][  T241] 1 lock held by seq-ext_ipv4/241:
| [ 26.774622][ T241] #0: ffff88800595aa58 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) 
| [   26.774930][  T241]
| [   26.774930][  T241] stack backtrace:
[   26.775422][  T241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   26.775787][  T241] Call Trace:
[   26.775918][  T241]  <TASK>
[ 26.776013][ T241] dump_stack_lvl (lib/dump_stack.c:123) 
[ 26.776183][ T241] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 26.776362][ T241] tcp_ao_finish_connect (net/ipv4/tcp_ao.c:1183 (discriminator 7)) 
[ 26.776532][ T241] tcp_finish_connect (net/ipv4/tcp_input.c:6340) 
[ 26.776709][ T241] tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6576) 
[ 26.776921][ 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) 
[ 26.777091][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 26.777225][ T241] ? __pfx_tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6455) 
[ 26.777429][ T241] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 26.777640][ T241] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 26.777804][ 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)) 
[ 26.777929][ T241] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 26.778096][ T241] tcp_rcv_state_process (net/ipv4/tcp_input.c:6796) 
[ 26.778265][ T241] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 26.778428][ T241] ? __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) 
[ 26.778600][ T241] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6751) 
[ 26.778806][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 26.778947][ T241] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1945) 
[ 26.779118][ T241] __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) 
[ 26.779289][ T241] release_sock (net/core/sock.c:3633) 
[ 26.779453][ T241] inet_stream_connect (net/ipv4/af_inet.c:751) 
[ 26.779628][ T241] __sys_connect (net/socket.c:2071 net/socket.c:2088) 
[ 26.779803][ T241] ? __pfx___sys_connect (net/socket.c:2078) 
[ 26.779969][ T241] ? do_fcntl (fs/fcntl.c:473) 
[ 26.780100][ T241] ? __pfx_do_fcntl (fs/fcntl.c:443) 
[ 26.780267][ T241] ? __fget_files (fs/file.c:1009) 
[ 26.780449][ T241] __x64_sys_connect (net/socket.c:2095) 
[ 26.780623][ T241] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 26.780802][ T241] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   26.781007][  T241] RIP: 0033:0x7f0ac06e440b
[ 26.781198][ 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
[   26.781780][  T241] RSP: 002b:00007f0abfd8fad0 EFLAGS: 00000293 ORIG_RAX: 000000000000002a
[   26.782046][  T241] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007f0ac06e440b
[   26.782299][  T241] RDX: 0000000000000010 RSI: 00007f0abfd8fcc0 RDI: 000000000000000a
[   26.782553][  T241] RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000000002
[   26.782807][  T241] R10: 00007f0ac059c598 R11: 0000000000000293 R12: 0000000000410210
[   26.783052][  T241] R13: 0000000000000005 R14: 00007f0abfd8fcc0 R15: 0000000000000000
| [   28.030079][  T233] 1 lock held by seq-ext_ipv4/233:
| [ 28.030239][ T233] #0: ffff88800595b798 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) 
| [   28.030537][  T233]
| [   28.030537][  T233] stack backtrace:
[   28.031005][  T233] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   28.031365][  T233] Call Trace:
[   28.031499][  T233]  <TASK>
[ 28.031583][ T233] dump_stack_lvl (lib/dump_stack.c:123) 
[ 28.031751][ T233] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 28.031923][ T233] tcp_ao_set_repair (net/ipv4/tcp_ao.c:2399 (discriminator 7)) 
[ 28.032081][ 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) 
[ 28.032244][ T233] ? __pfx_tcp_ao_set_repair (net/ipv4/tcp_ao.c:2371) 
[ 28.032411][ T233] do_tcp_setsockopt (net/ipv4/tcp.c:3924) 
[ 28.032572][ T233] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) 
[ 28.032729][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 28.032899][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 28.033062][ T233] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 28.033216][ T233] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 28.033379][ T233] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 28.033534][ T233] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 28.033688][ T233] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 28.033849][ T233] do_sock_setsockopt (net/socket.c:2334) 
[ 28.034005][ T233] ? __pfx_do_sock_setsockopt (net/socket.c:2303) 
[ 28.034170][ T233] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 28.034299][ T233] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) 
[ 28.034457][ T233] ? __pfx___sys_setsockopt (net/socket.c:2347) 
[ 28.034615][ T233] ? __fget_files (fs/file.c:1009) 
[ 28.034770][ T233] ? __pfx___sys_socket (net/socket.c:1712) 
[ 28.034931][ T233] __x64_sys_setsockopt (net/socket.c:2363) 
[ 28.035084][ T233] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 28.035273][ T233] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 28.035429][ T233] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   28.035618][  T233] RIP: 0033:0x7f0ac06e491e
[ 28.035781][ 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
[   28.036315][  T233] RSP: 002b:00007fffe1c00138 EFLAGS: 00000202 ORIG_RAX: 0000000000000036
[   28.036546][  T233] RAX: ffffffffffffffda RBX: 0000000000000fdd RCX: 00007f0ac06e491e
[   28.036773][  T233] RDX: 000000000000002a RSI: 0000000000000006 RDI: 0000000000000009
[   28.037004][  T233] RBP: 000000000101000a R08: 0000000000000010 R09: 0000000000000064
[   28.037232][  T233] R10: 00007fffe1c001b0 R11: 0000000000000202 R12: 00007fffe1c00350


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