======================================
| [   29.326486][  T239] 1 lock held by key-management_/239:
| [ 29.327092][ T239] #0: ffff888006031098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
| [   29.327557][  T239]
| [   29.327557][  T239] stack backtrace:
[   29.328370][  T239] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   29.328911][  T239] Call Trace:
[   29.329103][  T239]  <TASK>
[ 29.329238][ T239] dump_stack_lvl (lib/dump_stack.c:123) 
[ 29.329505][ T239] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 29.329763][ T239] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) 
[ 29.330005][ T239] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 29.330267][ T239] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) 
[ 29.330570][ T239] ? stack_depot_save_flags (lib/stackdepot.c:664) 
[ 29.330824][ T239] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 29.331067][ T239] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 29.331310][ T239] ? kfree (mm/slub.c:4579 mm/slub.c:4727) 
[ 29.331496][ T239] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) 
[ 29.331796][ T239] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 29.332062][ T239] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) 
[ 29.332309][ T239] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 29.332559][ T239] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 29.332801][ T239] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 29.333049][ T239] ? 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) 
[ 29.333294][ T239] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 29.333500][ T239] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 29.333737][ T239] do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 29.333985][ T239] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) 
[ 29.334227][ T239] ? tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1737) 
[ 29.334503][ T239] ? release_sock (net/core/sock.c:3630) 
[ 29.334751][ T239] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) 
[ 29.334995][ T239] ? release_sock (net/core/sock.c:3630) 
[ 29.335244][ T239] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 29.335493][ T239] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) 
[ 29.335736][ T239] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 29.335991][ T239] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 29.336232][ T239] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 29.336473][ T239] ? 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) 
[ 29.336714][ T239] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 29.336909][ T239] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 29.337174][ T239] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 29.337419][ T239] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 29.337656][ T239] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 29.337897][ T239] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 29.338151][ T239] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 29.338390][ T239] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 29.338632][ T239] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 29.338871][ T239] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 29.339116][ T239] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) 
[ 29.339368][ T239] do_sock_getsockopt (net/socket.c:2396) 
[ 29.339608][ T239] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 29.339854][ T239] ? __pfx_do_sock_getsockopt (net/socket.c:2374) 
[ 29.340120][ T239] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 29.340312][ T239] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) 
[ 29.340561][ T239] ? __pfx___sys_getsockopt (net/socket.c:2415) 
[ 29.340804][ T239] ? __pfx_task_work_run (kernel/task_work.c:207) 
[ 29.341062][ T239] __x64_sys_getsockopt (net/socket.c:2432) 
[ 29.341298][ T239] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 29.341597][ T239] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 29.341840][ T239] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   29.342142][  T239] RIP: 0033:0x7f6e78a3046e
[ 29.342396][ T239] 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
[   29.343231][  T239] RSP: 002b:00007f6e73ffe878 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
[   29.343597][  T239] RAX: ffffffffffffffda RBX: 00007f6e73ffeb40 RCX: 00007f6e78a3046e
[   29.343962][  T239] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 000000000000000a
[   29.344321][  T239] RBP: 00007f6e73ffe890 R08: 00007f6e73ffe88c R09: 0000000000000064
[   29.344680][  T239] R10: 00007f6e73ffe890 R11: 0000000000000246 R12: 000000000000000a
[   29.345043][  T239] R13: 0000000000000064 R14: 0000000000000080 R15: 0000000000000064
| [   29.347987][  T239] 1 lock held by key-management_/239:
| [ 29.348239][ T239] #0: ffff888006031098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) 
| [   29.348760][  T239]
| [   29.348760][  T239] stack backtrace:
[   29.349480][  T239] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   29.350003][  T239] Call Trace:
[   29.350187][  T239]  <TASK>
[ 29.350321][ T239] dump_stack_lvl (lib/dump_stack.c:123) 
[ 29.350571][ T239] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 29.350819][ T239] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) 
[ 29.351069][ T239] tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1698) 
[ 29.351323][ T239] ? __pfx_tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1597) 
[ 29.351570][ T239] ? 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) 
[ 29.351881][ T239] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 29.352134][ T239] ? do_tcp_setsockopt (net/ipv4/tcp.c:3943) 
[ 29.352374][ T239] do_tcp_setsockopt (net/ipv4/tcp.c:3943) 
[ 29.352621][ T239] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) 
[ 29.352858][ T239] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 29.353117][ T239] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 29.353363][ T239] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 29.353609][ T239] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 29.353880][ T239] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 29.354123][ T239] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 29.354363][ T239] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 29.354615][ T239] do_sock_setsockopt (net/socket.c:2334) 
[ 29.354860][ T239] ? __pfx_do_sock_setsockopt (net/socket.c:2303) 
[ 29.355121][ T239] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 29.355318][ T239] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) 
[ 29.355568][ T239] ? __pfx___sys_setsockopt (net/socket.c:2347) 
[ 29.355818][ T239] ? __pfx_task_work_run (kernel/task_work.c:207) 
[ 29.356078][ T239] __x64_sys_setsockopt (net/socket.c:2363) 
[ 29.356330][ T239] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 29.356628][ T239] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 29.356874][ T239] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   29.357167][  T239] RIP: 0033:0x7f6e78a3091e
[ 29.357418][ T239] 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
[   29.358269][  T239] RSP: 002b:00007f6e73ffea08 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[   29.358633][  T239] RAX: ffffffffffffffda RBX: 00000000000000c8 RCX: 00007f6e78a3091e
[   29.359191][  T239] RDX: 0000000000000026 RSI: 0000000000000006 RDI: 000000000000000a
[   29.359541][  T239] RBP: 00000000000000c8 R08: 0000000000000120 R09: 0029383231736561
[   29.359898][  T239] R10: 00007f6e73ffea20 R11: 0000000000000246 R12: 000000000000000a
[   29.360257][  T239] R13: 0000000000000000 R14: 00007f6e73ffeb40 R15: 0000000000411c28
| [   29.364287][  T239] 1 lock held by key-management_/239:
| [ 29.364519][ T239] #0: ffff888006031098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) 
| [   29.365013][  T239]
| [   29.365013][  T239] stack backtrace:
[   29.365713][  T239] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   29.366229][  T239] Call Trace:
[   29.366419][  T239]  <TASK>
[ 29.366548][ T239] dump_stack_lvl (lib/dump_stack.c:123) 
[ 29.366795][ T239] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 29.367038][ T239] tcp_ao_del_cmd (net/ipv4/tcp_ao.c:1905 (discriminator 7)) 
[ 29.367287][ T239] ? __pfx_tcp_ao_del_cmd (net/ipv4/tcp_ao.c:1813) 
[ 29.367536][ T239] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 29.367803][ T239] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 29.368069][ T239] do_tcp_setsockopt (net/ipv4/tcp.c:3943) 
[ 29.368361][ T239] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) 
[ 29.368616][ T239] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 29.368889][ T239] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 29.369145][ T239] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 29.369391][ T239] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 29.369647][ T239] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 29.369893][ T239] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 29.370144][ T239] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 29.370412][ T239] do_sock_setsockopt (net/socket.c:2334) 
[ 29.370663][ T239] ? __pfx_do_sock_setsockopt (net/socket.c:2303) 
[ 29.370931][ T239] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 29.371132][ T239] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) 
[ 29.371394][ T239] ? __pfx___sys_setsockopt (net/socket.c:2347) 
[ 29.371649][ T239] ? __pfx_task_work_run (kernel/task_work.c:207) 
[ 29.371914][ T239] __x64_sys_setsockopt (net/socket.c:2363) 
[ 29.372165][ T239] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 29.372486][ T239] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 29.372743][ T239] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   29.373052][  T239] RIP: 0033:0x7f6e78a3091e
[ 29.373321][ T239] 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
[   29.374187][  T239] RSP: 002b:00007f6e73ffea28 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[   29.374576][  T239] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007f6e78a3091e
[   29.374948][  T239] RDX: 0000000000000027 RSI: 0000000000000006 RDI: 000000000000000a
[   29.375325][  T239] RBP: 00000000ffffffff R08: 0000000000000090 R09: 00007f6e73ffeaa0
[   29.375835][  T239] R10: 00007f6e73ffeaa0 R11: 0000000000000246 R12: 00000000000000c8
[   29.376218][  T239] R13: 000000000000000a R14: 00000000000000c8 R15: 00007f6e73ffeb30
| [   29.397770][  T239] 1 lock held by key-management_/239:
| [ 29.398031][ T239] #0: ffff888006031e98 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) 
| [   29.398544][  T239]
| [   29.398544][  T239] stack backtrace:
[   29.399337][  T239] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   29.399895][  T239] Call Trace:
[   29.400094][  T239]  <TASK>
[ 29.400231][ T239] dump_stack_lvl (lib/dump_stack.c:123) 
[ 29.400496][ T239] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 29.400764][ T239] tcp_ao_established_key (net/ipv4/tcp_ao.c:117 (discriminator 7)) 
[ 29.401020][ T239] tcp_ao_info_cmd.constprop.0 (net/ipv4/tcp_ao.c:2003) 
[ 29.401344][ T239] ? __pfx_tcp_ao_info_cmd.constprop.0 (net/ipv4/tcp_ao.c:1956) 
[ 29.401668][ T239] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 29.401867][ T239] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 29.402133][ T239] do_tcp_setsockopt (net/ipv4/tcp.c:3943) 
[ 29.402390][ T239] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) 
[ 29.402641][ T239] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 29.402921][ T239] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 29.403178][ T239] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 29.403426][ T239] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 29.403679][ T239] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 29.403927][ T239] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 29.404177][ T239] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 29.404443][ T239] do_sock_setsockopt (net/socket.c:2334) 
[ 29.404698][ T239] ? __pfx_do_sock_setsockopt (net/socket.c:2303) 
[ 29.404977][ T239] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 29.405179][ T239] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) 
[ 29.405435][ T239] ? __pfx___sys_setsockopt (net/socket.c:2347) 
[ 29.405686][ T239] ? __sys_socket (net/socket.c:496 net/socket.c:1725) 
[ 29.405946][ T239] ? __pfx___sys_socket (net/socket.c:1712) 
[ 29.406197][ T239] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 29.406502][ T239] __x64_sys_setsockopt (net/socket.c:2363) 
[ 29.406739][ T239] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 29.407044][ T239] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 29.407291][ T239] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   29.407585][  T239] RIP: 0033:0x7f6e78a3091e
[ 29.407843][ T239] 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
[   29.408688][  T239] RSP: 002b:00007f6e73ffec68 EFLAGS: 00000206 ORIG_RAX: 0000000000000036
[   29.409058][  T239] RAX: ffffffffffffffda RBX: 0000000000000064 RCX: 00007f6e78a3091e
[   29.409422][  T239] RDX: 0000000000000028 RSI: 0000000000000006 RDI: 0000000000000009
[   29.409778][  T239] RBP: 00000000000000c8 R08: 0000000000000030 R09: 00000000000000c8
[   29.410136][  T239] R10: 00007f6e73ffec80 R11: 0000000000000206 R12: 0000000000000009
[   29.410493][  T239] R13: 0000000000000000 R14: 00007f6e78980520 R15: 0000000000000000
| [   31.482297][  T239] 1 lock held by key-management_/239:
| [ 31.482474][ T239] #0: ffff888006db9e98 (sk_lock-AF_INET6){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) 
| [   31.482914][  T239]
| [   31.482914][  T239] stack backtrace:
[   31.483448][  T239] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   31.483845][  T239] Call Trace:
[   31.483982][  T239]  <TASK>
[ 31.484079][ T239] dump_stack_lvl (lib/dump_stack.c:123) 
[ 31.484262][ T239] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 31.484448][ T239] tcp_ao_finish_connect (net/ipv4/tcp_ao.c:1183 (discriminator 7)) 
[ 31.484645][ T239] tcp_finish_connect (net/ipv4/tcp_input.c:6340) 
[ 31.484833][ T239] tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6576) 
[ 31.485062][ T239] ? 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) 
[ 31.485245][ T239] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 31.485390][ T239] ? __pfx_tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6455) 
[ 31.485620][ T239] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 31.485848][ T239] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 31.486033][ T239] ? 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)) 
[ 31.486180][ T239] tcp_rcv_state_process (net/ipv4/tcp_input.c:6796) 
[ 31.486358][ T239] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 31.486536][ T239] ? __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) 
[ 31.486744][ T239] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6751) 
[ 31.486970][ T239] ? 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) 
[ 31.487148][ T239] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 31.487291][ T239] tcp_v6_do_rcv (net/ipv6/tcp_ipv6.c:1676) 
[ 31.487473][ T239] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 31.487699][ T239] __release_sock (net/core/sock.c:3079) 
[ 31.487887][ T239] release_sock (net/core/sock.c:3633) 
[ 31.488069][ T239] inet_stream_connect (net/ipv4/af_inet.c:751) 
[ 31.488256][ T239] __sys_connect (net/socket.c:2071 net/socket.c:2088) 
[ 31.488440][ T239] ? __pfx___sys_connect (net/socket.c:2078) 
[ 31.488618][ T239] ? do_fcntl (fs/fcntl.c:473) 
[ 31.488762][ T239] ? __fget_files (fs/file.c:1009) 
[ 31.488952][ T239] __x64_sys_connect (net/socket.c:2095) 
[ 31.489136][ T239] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 31.489323][ T239] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   31.489547][  T239] RIP: 0033:0x7f6e78a3040b
[ 31.489735][ T239] 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
[   31.490394][  T239] RSP: 002b:00007f6e73ffebb0 EFLAGS: 00000293 ORIG_RAX: 000000000000002a
[   31.490682][  T239] RAX: ffffffffffffffda RBX: 000000000000001c RCX: 00007f6e78a3040b
[   31.490958][  T239] RDX: 000000000000001c RSI: 00007f6e73ffec00 RDI: 0000000000000009
[   31.491212][  T239] RBP: 0000000000000009 R08: 0000000000000000 R09: 00000000ffffffff
[   31.491477][  T239] R10: 00007f6e788e8598 R11: 0000000000000293 R12: 00000000004141f0


Finger prints:
lockdep_rcu_suspicious:tcp_ao_established_key:do_tcp_setsockopt:do_sock_setsockopt:__sys_setsockopt
lockdep_rcu_suspicious:tcp_ao_finish_connect:tcp_finish_connect:tcp_rcv_synsent_state_process:tcp_rcv_state_process
lockdep_rcu_suspicious:tcp_ao_copy_mkts_to_user:do_tcp_getsockopt:tcp_getsockopt:do_sock_getsockopt
lockdep_rcu_suspicious:tcp_ao_del_cmd:do_tcp_setsockopt:do_sock_setsockopt:__sys_setsockopt
lockdep_rcu_suspicious:tcp_ao_add_cmd:do_tcp_setsockopt:do_sock_setsockopt:__sys_setsockopt