====================================== | [ 26.429735][ T234] 1 lock held by bench-lookups_i/234: | [ 26.429887][ T234] #0: ffff88800680aa58 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) | [ 26.430173][ T234] | [ 26.430173][ T234] stack backtrace: [ 26.430633][ T234] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 26.430973][ T234] Call Trace: [ 26.431102][ T234] [ 26.431185][ T234] dump_stack_lvl (lib/dump_stack.c:123) [ 26.431349][ T234] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 26.431506][ T234] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) [ 26.431659][ T234] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 26.431816][ T234] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) [ 26.431999][ T234] ? stack_depot_save_flags (lib/stackdepot.c:664) [ 26.432158][ T234] ? kasan_save_stack (mm/kasan/common.c:48) [ 26.432312][ T234] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) [ 26.432459][ T234] ? kasan_save_free_info (mm/kasan/generic.c:582) [ 26.432605][ T234] ? __kasan_slab_free (mm/kasan/common.c:271) [ 26.432750][ T234] ? kfree (mm/slub.c:4579 mm/slub.c:4727) [ 26.432864][ T234] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) [ 26.433041][ T234] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 26.433202][ T234] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) [ 26.433349][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 26.433508][ T234] ? __lock_release (kernel/locking/lockdep.c:5501) [ 26.433655][ T234] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 26.433807][ 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) [ 26.433957][ T234] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 26.434081][ T234] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 26.434232][ T234] do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 26.434388][ T234] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) [ 26.434536][ T234] ? tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1737) [ 26.434698][ T234] ? release_sock (net/core/sock.c:3630) [ 26.434846][ T234] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) [ 26.434993][ T234] ? release_sock (net/core/sock.c:3630) [ 26.435144][ T234] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 26.435292][ T234] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 26.435447][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 26.435605][ T234] ? __lock_release (kernel/locking/lockdep.c:5501) [ 26.435756][ T234] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 26.435909][ 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) [ 26.436054][ T234] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 26.436188][ T234] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 26.436348][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 26.436498][ T234] ? __lock_release (kernel/locking/lockdep.c:5501) [ 26.436641][ T234] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 26.436789][ T234] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 26.436936][ T234] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 26.437084][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 26.437232][ T234] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 26.437379][ T234] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 26.437532][ T234] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) [ 26.437684][ T234] do_sock_getsockopt (net/socket.c:2396) [ 26.437834][ T234] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 26.437985][ T234] ? __pfx_do_sock_getsockopt (net/socket.c:2374) [ 26.438146][ T234] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 26.438267][ T234] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) [ 26.438419][ T234] ? __pfx___sys_getsockopt (net/socket.c:2415) [ 26.438574][ T234] ? __pfx_task_work_run (kernel/task_work.c:207) [ 26.438746][ T234] __x64_sys_getsockopt (net/socket.c:2432) [ 26.438899][ T234] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 26.439086][ T234] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 26.439235][ T234] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 26.439423][ T234] RIP: 0033:0x7fb7cc40146e [ 26.439580][ 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 [ 26.440096][ T234] RSP: 002b:00007ffd9055fba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 26.440320][ T234] RAX: ffffffffffffffda RBX: 00007ffd9055fe60 RCX: 00007fb7cc40146e [ 26.440544][ T234] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 0000000000000009 [ 26.440764][ T234] RBP: 00007ffd9055fbc0 R08: 00007ffd9055fbbc R09: 0000000000000064 [ 26.440985][ T234] R10: 00007ffd9055fbc0 R11: 0000000000000246 R12: 0000000000000009 [ 26.441207][ T234] R13: 0000000000000064 R14: 0000000000000020 R15: 0000000000000064 | [ 26.443393][ T234] 1 lock held by bench-lookups_i/234: | [ 26.443546][ T234] #0: ffff88800680aa58 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) | [ 26.443826][ T234] | [ 26.443826][ T234] stack backtrace: [ 26.444261][ T234] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 26.444583][ T234] Call Trace: [ 26.444696][ T234] [ 26.444776][ T234] dump_stack_lvl (lib/dump_stack.c:123) [ 26.444931][ T234] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 26.445085][ T234] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) [ 26.445238][ T234] tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1698) [ 26.445391][ T234] ? __pfx_tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1597) [ 26.445555][ 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) [ 26.445707][ T234] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 26.445888][ T234] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 26.446041][ T234] ? do_tcp_setsockopt (net/ipv4/tcp.c:3943) [ 26.446211][ T234] do_tcp_setsockopt (net/ipv4/tcp.c:3943) [ 26.446364][ T234] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) [ 26.446510][ T234] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 26.446663][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 26.446812][ T234] ? __lock_release (kernel/locking/lockdep.c:5501) [ 26.446965][ T234] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 26.447114][ T234] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 26.447260][ T234] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) [ 26.447407][ T234] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 26.447554][ T234] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 26.447704][ T234] do_sock_setsockopt (net/socket.c:2334) [ 26.447850][ T234] ? __pfx_do_sock_setsockopt (net/socket.c:2303) [ 26.448002][ T234] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 26.448186][ T234] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 26.448312][ T234] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) [ 26.448463][ T234] ? __pfx___sys_setsockopt (net/socket.c:2347) [ 26.448616][ T234] ? __pfx_task_work_run (kernel/task_work.c:207) [ 26.448775][ T234] __x64_sys_setsockopt (net/socket.c:2363) [ 26.448921][ T234] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 26.449105][ T234] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 26.449256][ T234] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 26.449436][ T234] RIP: 0033:0x7fb7cc40191e [ 26.449589][ T234] 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 [ 26.450112][ T234] RSP: 002b:00007ffd9055fd38 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 26.450341][ T234] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb7cc40191e [ 26.450559][ T234] RDX: 0000000000000026 RSI: 0000000000000006 RDI: 0000000000000009 [ 26.450778][ T234] RBP: 0000000000000009 R08: 0000000000000120 R09: 0029383231736561 [ 26.451004][ T234] R10: 00007ffd9055fd40 R11: 0000000000000246 R12: 00007ffd9055fe60 [ 26.451234][ T234] R13: ffffffff00000000 R14: 0000000000000001 R15: 0000000000000200 | [ 26.667705][ T242] 1 lock held by bench-lookups_i/242: | [ 26.667861][ T242] #0: ffff888006808298 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) | [ 26.668145][ T242] | [ 26.668145][ T242] stack backtrace: [ 26.668610][ T242] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 26.668945][ T242] Call Trace: [ 26.669066][ T242] [ 26.669148][ T242] dump_stack_lvl (lib/dump_stack.c:123) [ 26.669314][ T242] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 26.669471][ T242] tcp_ao_finish_connect (net/ipv4/tcp_ao.c:1183 (discriminator 7)) [ 26.669634][ T242] tcp_finish_connect (net/ipv4/tcp_input.c:6340) [ 26.669798][ T242] tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6576) [ 26.669999][ T242] ? 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) [ 26.670159][ T242] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 26.670282][ T242] ? __pfx_tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6455) [ 26.670492][ T242] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 26.670689][ T242] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 26.670843][ T242] ? 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)) [ 26.670961][ T242] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 26.671120][ T242] tcp_rcv_state_process (net/ipv4/tcp_input.c:6796) [ 26.671275][ T242] ? __lock_release (kernel/locking/lockdep.c:5501) [ 26.671424][ T242] ? __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) [ 26.671601][ T242] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6751) [ 26.671792][ T242] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 26.671916][ T242] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1945) [ 26.672075][ T242] __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) [ 26.672234][ T242] release_sock (net/core/sock.c:3633) [ 26.672395][ T242] inet_stream_connect (net/ipv4/af_inet.c:751) [ 26.672553][ T242] __sys_connect (net/socket.c:2071 net/socket.c:2088) [ 26.672720][ T242] ? __pfx___sys_connect (net/socket.c:2078) [ 26.672871][ T242] ? do_fcntl (fs/fcntl.c:473) [ 26.672989][ T242] ? __pfx_do_fcntl (fs/fcntl.c:443) [ 26.673146][ T242] ? __fget_files (fs/file.c:1009) [ 26.673311][ T242] __x64_sys_connect (net/socket.c:2095) [ 26.673463][ T242] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 26.673619][ T242] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 26.673811][ T242] RIP: 0033:0x7fb7cc40140b [ 26.673976][ T242] 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 [ 26.674508][ T242] RSP: 002b:00007fb7cbaadcf0 EFLAGS: 00000293 ORIG_RAX: 000000000000002a [ 26.674737][ T242] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007fb7cc40140b [ 26.674965][ T242] RDX: 0000000000000010 RSI: 00007fb7cbaadd40 RDI: 000000000000000a [ 26.675197][ T242] RBP: 000000000000000a R08: 0000000000000000 R09: 00007fb7cc59c080 [ 26.675428][ T242] R10: 00007fb7cc2b9598 R11: 0000000000000293 R12: 000000000040dab0 [ 26.675665][ T242] R13: 0000000000000005 R14: 00007fb7cbaadd40 R15: 00000000004143f8 | [ 28.280475][ T234] 1 lock held by bench-lookups_i/234: | [ 28.280658][ T234] #0: ffff88800680aa58 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) | [ 28.280990][ T234] | [ 28.280990][ T234] stack backtrace: [ 28.281544][ T234] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 28.281919][ T234] Call Trace: [ 28.282054][ T234] [ 28.282147][ T234] dump_stack_lvl (lib/dump_stack.c:123) [ 28.282334][ T234] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 28.282515][ T234] tcp_ao_del_cmd (net/ipv4/tcp_ao.c:1905 (discriminator 7)) [ 28.282704][ T234] ? __pfx_tcp_ao_del_cmd (net/ipv4/tcp_ao.c:1813) [ 28.282887][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 28.283073][ T234] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 28.283260][ T234] do_tcp_setsockopt (net/ipv4/tcp.c:3943) [ 28.283440][ T234] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) [ 28.283613][ T234] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 28.283789][ T234] ? hlock_class (kernel/locking/lockdep.c:223) [ 28.283973][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 28.284153][ T234] ? __lock_release (kernel/locking/lockdep.c:5501) [ 28.284328][ T234] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 28.284502][ T234] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 28.284678][ T234] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) [ 28.284861][ T234] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 28.285030][ T234] do_sock_setsockopt (net/socket.c:2334) [ 28.285193][ T234] ? __pfx_do_sock_setsockopt (net/socket.c:2303) [ 28.285370][ T234] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 28.285489][ T234] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 28.285659][ T234] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) [ 28.285828][ T234] ? __pfx___sys_setsockopt (net/socket.c:2347) [ 28.285992][ T234] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4609) [ 28.286227][ T234] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4609) [ 28.286427][ T234] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 28.286634][ T234] __x64_sys_setsockopt (net/socket.c:2363) [ 28.286799][ T234] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 28.286999][ T234] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 28.287164][ T234] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 28.287382][ T234] RIP: 0033:0x7fb7cc40191e [ 28.287551][ T234] 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 [ 28.288112][ T234] RSP: 002b:00007ffd9055fe58 EFLAGS: 00000206 ORIG_RAX: 0000000000000036 [ 28.288372][ T234] RAX: ffffffffffffffda RBX: 0000000000414380 RCX: 00007fb7cc40191e [ 28.288630][ T234] RDX: 0000000000000027 RSI: 0000000000000006 RDI: 0000000000000009 [ 28.288893][ T234] RBP: 0000000000402dc0 R08: 0000000000000090 R09: 00007fb7cc59c080 [ 28.289134][ T234] R10: 00007ffd9055fed0 R11: 0000000000000206 R12: 0000000000000009 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_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