====================================== | [ 25.595717][ T234] 1 lock held by icmps-discard_i/234: | [ 25.596050][ T234] #0: ffff888005ee1e98 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) | [ 25.596412][ T234] | [ 25.596412][ T234] stack backtrace: [ 25.596912][ T234] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 25.597272][ T234] Call Trace: [ 25.597404][ T234] [ 25.597496][ T234] dump_stack_lvl (lib/dump_stack.c:123) [ 25.597672][ T234] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 25.597852][ T234] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) [ 25.598019][ T234] tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1698) [ 25.598212][ T234] ? __pfx_tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1597) [ 25.598372][ 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) [ 25.598576][ T234] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 25.598750][ T234] ? do_tcp_setsockopt (net/ipv4/tcp.c:3943) [ 25.598905][ T234] do_tcp_setsockopt (net/ipv4/tcp.c:3943) [ 25.599073][ T234] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) [ 25.599236][ T234] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 25.599411][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.599580][ T234] ? __lock_release (kernel/locking/lockdep.c:5501) [ 25.599748][ T234] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 25.599908][ T234] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 25.600068][ T234] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) [ 25.600233][ T234] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 25.600395][ T234] do_sock_setsockopt (net/socket.c:2334) [ 25.600569][ T234] ? __pfx_do_sock_setsockopt (net/socket.c:2303) [ 25.600737][ T234] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 25.600867][ T234] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) [ 25.601037][ T234] ? __pfx___sys_setsockopt (net/socket.c:2347) [ 25.601201][ T234] ? __rseq_handle_notify_resume (kernel/rseq.c:316) [ 25.601412][ T234] ? do_user_addr_fault (./include/linux/mmap_lock.h:172 arch/x86/mm/fault.c:1417) [ 25.601590][ T234] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:316) [ 25.601801][ T234] __x64_sys_setsockopt (net/socket.c:2363) [ 25.601971][ T234] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 25.602173][ T234] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 25.602341][ T234] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 25.602540][ T234] RIP: 0033:0x7f60f1c5d91e [ 25.602711][ 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 [ 25.603284][ T234] RSP: 002b:00007ffccacfacd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 25.603542][ T234] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f60f1c5d91e [ 25.603790][ T234] RDX: 0000000000000026 RSI: 0000000000000006 RDI: 0000000000000009 [ 25.604029][ T234] RBP: 0000000000000009 R08: 0000000000000120 R09: 0029383231736561 [ 25.604280][ T234] R10: 00007ffccacface0 R11: 0000000000000246 R12: 00007ffccacfae00 [ 25.604527][ T234] R13: 0000000000000080 R14: 0100000000000000 R15: 00005402b80d0120 | [ 25.816906][ T241] 1 lock held by icmps-discard_i/241: | [ 25.817075][ T241] #0: ffff888005ee1098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) | [ 25.817428][ T241] | [ 25.817428][ T241] stack backtrace: [ 25.817894][ T241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 25.818240][ T241] Call Trace: [ 25.818368][ T241] [ 25.818454][ T241] dump_stack_lvl (lib/dump_stack.c:123) [ 25.818620][ T241] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 25.818785][ T241] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) [ 25.818945][ T241] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 25.819116][ T241] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) [ 25.819314][ T241] ? stack_depot_save_flags (lib/stackdepot.c:664) [ 25.819475][ T241] ? kasan_save_stack (mm/kasan/common.c:48) [ 25.819637][ T241] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) [ 25.819797][ T241] ? kfree (mm/slub.c:4579 mm/slub.c:4727) [ 25.819918][ T241] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) [ 25.820106][ T241] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 25.820272][ T241] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) [ 25.820433][ T241] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.820592][ T241] ? __lock_release (kernel/locking/lockdep.c:5501) [ 25.820757][ T241] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 25.820920][ 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) [ 25.821076][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 25.821212][ T241] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 25.821369][ T241] do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 25.821527][ T241] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) [ 25.821686][ T241] ? tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1737) [ 25.821863][ T241] ? release_sock (net/core/sock.c:3630) [ 25.822023][ T241] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) [ 25.822187][ T241] ? release_sock (net/core/sock.c:3630) [ 25.822349][ T241] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 25.822512][ T241] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 25.822675][ T241] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.822836][ T241] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 25.822992][ T241] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 25.823148][ 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) [ 25.823310][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 25.823439][ T241] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 25.823608][ T241] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.823775][ T241] ? __lock_release (kernel/locking/lockdep.c:5501) [ 25.823935][ T241] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 25.824103][ T241] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 25.824259][ T241] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 25.824416][ T241] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.824575][ T241] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 25.824728][ T241] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 25.824890][ T241] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) [ 25.825054][ T241] do_sock_getsockopt (net/socket.c:2396) [ 25.825213][ T241] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 25.825375][ T241] ? __pfx_do_sock_getsockopt (net/socket.c:2374) [ 25.825541][ T241] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 25.825676][ T241] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) [ 25.825843][ T241] ? __pfx___sys_getsockopt (net/socket.c:2415) [ 25.826003][ T241] ? __pfx_task_work_run (kernel/task_work.c:207) [ 25.826174][ T241] __x64_sys_getsockopt (net/socket.c:2432) [ 25.826330][ T241] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 25.826524][ T241] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 25.826690][ T241] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 25.826890][ T241] RIP: 0033:0x7f60f1c5d46e [ 25.827054][ 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 [ 25.827604][ T241] RSP: 002b:00007f60f13089c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 25.827845][ T241] RAX: ffffffffffffffda RBX: 00007f60f1308c80 RCX: 00007f60f1c5d46e [ 25.828082][ T241] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 000000000000000a [ 25.828317][ T241] RBP: 00007f60f13089e0 R08: 00007f60f13089dc R09: 0000000000000064 [ 25.828554][ T241] R10: 00007f60f13089e0 R11: 0000000000000246 R12: 000000000000000a [ 25.828788][ T241] R13: 0000000000000064 R14: 0000000000000080 R15: 0000000000000064 | [ 25.843463][ T241] 1 lock held by icmps-discard_i/241: | [ 25.843619][ T241] #0: ffff888005ee1098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) | [ 25.843913][ T241] | [ 25.843913][ T241] stack backtrace: [ 25.844388][ T241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 25.844727][ T241] Call Trace: [ 25.844846][ T241] [ 25.844930][ T241] dump_stack_lvl (lib/dump_stack.c:123) [ 25.845097][ T241] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 25.845258][ T241] tcp_ao_finish_connect (net/ipv4/tcp_ao.c:1183 (discriminator 7)) [ 25.845419][ T241] tcp_finish_connect (net/ipv4/tcp_input.c:6340) [ 25.845578][ T241] tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6576) [ 25.845778][ 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) [ 25.845946][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 25.846073][ T241] ? __pfx_tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6455) [ 25.846354][ T241] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 25.846667][ T241] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 25.846825][ 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)) [ 25.846967][ T241] tcp_rcv_state_process (net/ipv4/tcp_input.c:6796) [ 25.847126][ T241] ? __lock_release (kernel/locking/lockdep.c:5501) [ 25.847279][ T241] ? __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) [ 25.847433][ T241] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6751) [ 25.847622][ 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) [ 25.847776][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 25.847904][ T241] tcp_v6_do_rcv (net/ipv6/tcp_ipv6.c:1676) [ 25.848074][ T241] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 25.848268][ T241] __release_sock (net/core/sock.c:3079) [ 25.848429][ T241] release_sock (net/core/sock.c:3633) [ 25.848584][ T241] inet_stream_connect (net/ipv4/af_inet.c:751) [ 25.848741][ T241] __sys_connect (net/socket.c:2071 net/socket.c:2088) [ 25.848898][ T241] ? __pfx___sys_connect (net/socket.c:2078) [ 25.849051][ T241] ? do_fcntl (fs/fcntl.c:473) [ 25.849179][ T241] ? __fget_files (fs/file.c:1009) [ 25.849346][ T241] __x64_sys_connect (net/socket.c:2095) [ 25.849502][ T241] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 25.849660][ T241] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 25.849851][ T241] RIP: 0033:0x7f60f1c5d40b [ 25.850013][ 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 [ 25.850550][ T241] RSP: 002b:00007f60f1308d80 EFLAGS: 00000293 ORIG_RAX: 000000000000002a [ 25.850800][ T241] RAX: ffffffffffffffda RBX: 000000000000001c RCX: 00007f60f1c5d40b [ 25.851044][ T241] RDX: 000000000000001c RSI: 00007f60f1308e00 RDI: 000000000000000a [ 25.851274][ T241] RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000414400 [ 25.851504][ T241] R10: 00007f60f1b15598 R11: 0000000000000293 R12: 000000000040e1a8 Finger prints: 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