======================================
| [   25.760565][  T232] 1 lock held by setsockopt-clos/232:
| [ 25.760712][ T232] #0: ffff888006ab1e98 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
| [   25.761019][  T232]
| [   25.761019][  T232] stack backtrace:
[   25.761465][  T232] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.761786][  T232] Call Trace:
[   25.761903][  T232]  <TASK>
[ 25.761983][ T232] dump_stack_lvl (lib/dump_stack.c:123) 
[ 25.762141][ T232] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 25.762294][ T232] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) 
[ 25.762443][ T232] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 25.762597][ T232] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) 
[ 25.762778][ T232] ? stack_depot_save_flags (lib/stackdepot.c:664) 
[ 25.762932][ T232] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 25.763078][ T232] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 25.763225][ T232] ? kfree (mm/slub.c:4579 mm/slub.c:4727) 
[ 25.763335][ T232] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) 
[ 25.763513][ T232] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 25.763671][ T232] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) 
[ 25.763820][ T232] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.763968][ T232] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 25.764116][ T232] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 25.764263][ T232] ? 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) 
[ 25.764411][ T232] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 25.764532][ T232] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 25.764680][ T232] do_tcp_getsockopt (net/ipv4/tcp.c:4631) 
[ 25.764835][ T232] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) 
[ 25.764992][ T232] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 25.765136][ T232] ? inode_update_timestamps (fs/inode.c:2649 fs/inode.c:2662 fs/inode.c:1997) 
[ 25.765283][ T232] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 25.765439][ T232] ? 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) 
[ 25.765583][ T232] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 25.765700][ T232] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 25.765844][ T232] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) 
[ 25.765990][ T232] ? ktime_get_coarse_real_ts64 (./include/linux/seqlock.h:74 kernel/time/timekeeping.c:2390) 
[ 25.766176][ T232] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 25.766321][ T232] ? 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) 
[ 25.766466][ T232] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 25.766581][ T232] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 25.766744][ T232] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.766892][ T232] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 25.767034][ T232] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 25.767178][ T232] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 25.767323][ T232] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 25.767467][ T232] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.767614][ T232] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 25.767757][ T232] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 25.767909][ T232] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) 
[ 25.768060][ T232] do_sock_getsockopt (net/socket.c:2396) 
[ 25.768205][ T232] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 25.768353][ T232] ? __pfx_do_sock_getsockopt (net/socket.c:2374) 
[ 25.768511][ T232] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 25.768629][ T232] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) 
[ 25.768778][ T232] ? __pfx___sys_getsockopt (net/socket.c:2415) 
[ 25.768924][ T232] ? fput (./arch/x86/include/asm/atomic64_64.h:61 ./include/linux/atomic/atomic-arch-fallback.h:4404 ./include/linux/atomic/atomic-long.h:1571 ./include/linux/atomic/atomic-instrumented.h:4540 fs/file_table.c:482) 
[ 25.769038][ T232] ? ksys_write (./include/linux/file.h:69 ./include/linux/file.h:85 fs/read_write.c:739) 
[ 25.769188][ T232] ? __pfx___sys_socket (net/socket.c:1712) 
[ 25.769333][ T232] ? __pfx_ksys_write (fs/read_write.c:726) 
[ 25.769484][ T232] __x64_sys_getsockopt (net/socket.c:2432) 
[ 25.769636][ T232] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 25.769822][ T232] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.769969][ T232] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.770147][  T232] RIP: 0033:0x7fb51a3d346e
[ 25.770299][ T232] 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
[   25.770808][  T232] RSP: 002b:00007ffd9e83b618 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
[   25.771026][  T232] RAX: ffffffffffffffda RBX: 00007ffd9e83b7b0 RCX: 00007fb51a3d346e
[   25.771244][  T232] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 0000000000000009
[   25.771463][  T232] RBP: 00007ffd9e83b630 R08: 00007ffd9e83b62c R09: 0000000000000064
[   25.771679][  T232] R10: 00007ffd9e83b630 R11: 0000000000000246 R12: 0000000000000009
[   25.771896][  T232] R13: 0000000000000064 R14: 0000000000000080 R15: 0000000000000064
| [   25.775192][  T232] 1 lock held by setsockopt-clos/232:
| [ 25.775342][ T232] #0: ffff888006ab4898 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) 
| [   25.775637][  T232]
| [   25.775637][  T232] stack backtrace:
[   25.776057][  T232] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.776374][  T232] Call Trace:
[   25.776484][  T232]  <TASK>
[ 25.776560][ T232] dump_stack_lvl (lib/dump_stack.c:123) 
[ 25.776708][ T232] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 25.776859][ T232] tcp_ao_del_cmd (net/ipv4/tcp_ao.c:1905 (discriminator 7)) 
[ 25.777007][ T232] ? __pfx_tcp_ao_del_cmd (net/ipv4/tcp_ao.c:1813) 
[ 25.777155][ T232] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.777311][ T232] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 25.777462][ T232] do_tcp_setsockopt (net/ipv4/tcp.c:3943) 
[ 25.777612][ T232] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) 
[ 25.777753][ T232] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 25.777907][ T232] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.778055][ T232] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 25.778196][ T232] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 25.778339][ T232] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 25.778481][ T232] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 25.778625][ T232] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 25.778803][ T232] do_sock_setsockopt (net/socket.c:2334) 
[ 25.778947][ T232] ? __pfx_do_sock_setsockopt (net/socket.c:2303) 
[ 25.779099][ T232] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 25.779212][ T232] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) 
[ 25.779359][ T232] ? __pfx___sys_setsockopt (net/socket.c:2347) 
[ 25.779501][ T232] ? __sys_socket (net/socket.c:496 net/socket.c:1725) 
[ 25.779650][ T232] ? __pfx___sys_socket (net/socket.c:1712) 
[ 25.779797][ T232] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 25.779979][ T232] __x64_sys_setsockopt (net/socket.c:2363) 
[ 25.780124][ T232] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 25.780302][ T232] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.780446][ T232] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.780624][  T232] RIP: 0033:0x7fb51a3d391e
[ 25.780780][ T232] 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
[   25.781405][  T232] RSP: 002b:00007ffd9e83b8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[   25.781621][  T232] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb51a3d391e
[   25.781837][  T232] RDX: 0000000000000027 RSI: 0000000000000006 RDI: 0000000000000009
[   25.782048][  T232] RBP: 0000000000000009 R08: 0000000000000450 R09: 0000000000000000
[   25.782259][  T232] R10: 00007ffd9e83b9d0 R11: 0000000000000246 R12: 0000000000000027
[   25.782487][  T232] R13: 0000000000000000 R14: 00007ffd9e83b9d0 R15: 000000000041069c
| [   25.814188][  T232] 1 lock held by setsockopt-clos/232:
| [ 25.814339][ T232] #0: ffff888006bd1098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) 
| [   25.814648][  T232]
| [   25.814648][  T232] stack backtrace:
[   25.815075][  T232] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.815402][  T232] Call Trace:
[   25.815520][  T232]  <TASK>
[ 25.815598][ T232] dump_stack_lvl (lib/dump_stack.c:123) 
[ 25.815751][ T232] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 25.815900][ T232] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) 
[ 25.816053][ T232] tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1698) 
[ 25.816209][ T232] ? __pfx_tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1597) 
[ 25.816360][ T232] ? 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) 
[ 25.816541][ T232] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 25.816694][ T232] ? do_tcp_setsockopt (net/ipv4/tcp.c:3943) 
[ 25.816839][ T232] do_tcp_setsockopt (net/ipv4/tcp.c:3943) 
[ 25.816990][ T232] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) 
[ 25.817133][ T232] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 25.817286][ T232] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 25.817438][ T232] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 25.817581][ T232] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 25.817729][ T232] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 25.817873][ T232] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 25.818023][ T232] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 25.818172][ T232] do_sock_setsockopt (net/socket.c:2334) 
[ 25.818317][ T232] ? __pfx_do_sock_setsockopt (net/socket.c:2303) 
[ 25.818478][ T232] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 25.818626][ T232] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 25.818745][ T232] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) 
[ 25.818894][ T232] ? __pfx___sys_setsockopt (net/socket.c:2347) 
[ 25.819038][ T232] ? __sys_socket (net/socket.c:496 net/socket.c:1725) 
[ 25.819186][ T232] ? __pfx___sys_socket (net/socket.c:1712) 
[ 25.819338][ T232] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 25.819528][ T232] __x64_sys_setsockopt (net/socket.c:2363) 
[ 25.819678][ T232] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 25.819857][ T232] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.820011][ T232] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.820194][  T232] RIP: 0033:0x7fb51a3d391e
[ 25.820350][ T232] 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
[   25.820853][  T232] RSP: 002b:00007ffd9e83bbd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000036
[   25.821076][  T232] RAX: ffffffffffffffda RBX: 00000000000001b4 RCX: 00007fb51a3d391e
[   25.821301][  T232] RDX: 0000000000000026 RSI: 0000000000000006 RDI: 0000000000000009
[   25.821518][  T232] RBP: 0000000000000009 R08: 0000000000000120 R09: 0029383231736561
[   25.821734][  T232] R10: 00007ffd9e83bd10 R11: 0000000000000206 R12: 0000000000001108
[   25.821951][  T232] R13: 0000000000000001 R14: 0100000000000000 R15: 00005402b80d0120
| [   26.296931][  T232] 1 lock held by setsockopt-clos/232:
| [ 26.297082][ T232] #0: ffff8880055a9e98 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) 
| [   26.297406][  T232]
| [   26.297406][  T232] stack backtrace:
[   26.297846][  T232] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   26.298176][  T232] Call Trace:
[   26.298297][  T232]  <TASK>
[ 26.298376][ T232] dump_stack_lvl (lib/dump_stack.c:123) 
[ 26.298534][ T232] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 26.298690][ T232] tcp_ao_established_key (net/ipv4/tcp_ao.c:117 (discriminator 7)) 
[ 26.298843][ T232] tcp_ao_del_cmd (net/ipv4/tcp_ao.c:1860) 
[ 26.298998][ T232] ? __pfx_tcp_ao_del_cmd (net/ipv4/tcp_ao.c:1813) 
[ 26.299152][ T232] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 26.299316][ T232] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 26.299492][ T232] do_tcp_setsockopt (net/ipv4/tcp.c:3943) 
[ 26.299665][ T232] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) 
[ 26.299809][ T232] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 26.299967][ T232] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 26.300119][ T232] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 26.300265][ T232] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) 
[ 26.300418][ T232] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 26.300564][ T232] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 26.300725][ T232] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 26.300896][ T232] do_sock_setsockopt (net/socket.c:2334) 
[ 26.301047][ T232] ? __pfx_do_sock_setsockopt (net/socket.c:2303) 
[ 26.301206][ T232] ? fdget (fs/file.c:1121 fs/file.c:1128) 
[ 26.301325][ T232] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) 
[ 26.301478][ T232] ? __pfx___sys_setsockopt (net/socket.c:2347) 
[ 26.301633][ T232] ? __sys_socket (net/socket.c:496 net/socket.c:1725) 
[ 26.301780][ T232] ? __pfx___sys_socket (net/socket.c:1712) 
[ 26.301930][ T232] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 26.302115][ T232] __x64_sys_setsockopt (net/socket.c:2363) 
[ 26.302260][ T232] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 26.302439][ T232] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 26.302587][ T232] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   26.302768][  T232] RIP: 0033:0x7fb51a3d391e
[ 26.302921][ T232] 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
[   26.303425][  T232] RSP: 002b:00007ffd9e83ba98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[   26.303643][  T232] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb51a3d391e
[   26.303859][  T232] RDX: 0000000000000027 RSI: 0000000000000006 RDI: 0000000000000009
[   26.304073][  T232] RBP: 0000000000000009 R08: 0000000000000090 R09: 0000000000000002
[   26.304286][  T232] R10: 00007ffd9e83bb50 R11: 0000000000000246 R12: 0000000000000027


Finger prints:
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
lockdep_rcu_suspicious:tcp_ao_copy_mkts_to_user:do_tcp_getsockopt:tcp_getsockopt:do_sock_getsockopt
lockdep_rcu_suspicious:tcp_ao_established_key:tcp_ao_del_cmd:do_tcp_setsockopt:do_sock_setsockopt