====================================== | [ 24.834641][ T234] 1 lock held by icmps-accept_ip/234: | [ 24.834857][ T234] #0: ffff888005f61e98 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) | [ 24.835222][ T234] | [ 24.835222][ T234] stack backtrace: [ 24.835736][ T234] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 24.836095][ T234] Call Trace: [ 24.836224][ T234] [ 24.836312][ T234] dump_stack_lvl (lib/dump_stack.c:123) [ 24.836479][ T234] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 24.836646][ T234] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) [ 24.836820][ T234] tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1698) [ 24.836987][ T234] ? __pfx_tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1597) [ 24.837148][ 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) [ 24.837360][ T234] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 24.837533][ T234] ? do_tcp_setsockopt (net/ipv4/tcp.c:3943) [ 24.837698][ T234] do_tcp_setsockopt (net/ipv4/tcp.c:3943) [ 24.837875][ T234] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) [ 24.838038][ T234] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 24.838224][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 24.838396][ T234] ? __lock_release (kernel/locking/lockdep.c:5501) [ 24.838557][ T234] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 24.838719][ T234] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 24.838883][ T234] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) [ 24.839044][ T234] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 24.839215][ T234] do_sock_setsockopt (net/socket.c:2334) [ 24.839379][ T234] ? __pfx_do_sock_setsockopt (net/socket.c:2303) [ 24.839546][ T234] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 24.839680][ T234] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) [ 24.839842][ T234] ? __pfx___sys_setsockopt (net/socket.c:2347) [ 24.840011][ T234] ? __rseq_handle_notify_resume (kernel/rseq.c:316) [ 24.840215][ T234] ? do_user_addr_fault (./include/linux/mmap_lock.h:172 arch/x86/mm/fault.c:1417) [ 24.840388][ T234] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:316) [ 24.840597][ T234] __x64_sys_setsockopt (net/socket.c:2363) [ 24.840773][ T234] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 24.840975][ T234] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 24.841151][ T234] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 24.841356][ T234] RIP: 0033:0x7f258b54e91e [ 24.841526][ 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 [ 24.842088][ T234] RSP: 002b:00007ffeb20e73f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 24.842332][ T234] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f258b54e91e [ 24.842576][ T234] RDX: 0000000000000026 RSI: 0000000000000006 RDI: 0000000000000009 [ 24.842813][ T234] RBP: 0000000000000009 R08: 0000000000000120 R09: 0029383231736561 [ 24.843053][ T234] R10: 00007ffeb20e7400 R11: 0000000000000246 R12: 00007ffeb20e7520 [ 24.843299][ T234] R13: 0000000000000080 R14: 0100000000000000 R15: 00005402b80d0120 | [ 25.052070][ T242] 1 lock held by icmps-accept_ip/242: | [ 25.052226][ T242] #0: ffff888005f61098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) | [ 25.052566][ T242] | [ 25.052566][ T242] stack backtrace: [ 25.053032][ T242] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 25.053405][ T242] Call Trace: [ 25.053526][ T242] [ 25.053610][ T242] dump_stack_lvl (lib/dump_stack.c:123) [ 25.053772][ T242] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 25.053932][ T242] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) [ 25.054092][ T242] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 25.054257][ T242] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) [ 25.054453][ T242] ? stack_depot_save_flags (lib/stackdepot.c:664) [ 25.054628][ T242] ? kasan_save_stack (mm/kasan/common.c:48) [ 25.054784][ T242] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) [ 25.054942][ T242] ? kfree (mm/slub.c:4579 mm/slub.c:4727) [ 25.055064][ T242] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) [ 25.055250][ T242] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 25.055418][ T242] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) [ 25.055576][ T242] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.055740][ T242] ? __lock_release (kernel/locking/lockdep.c:5501) [ 25.055895][ T242] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 25.056054][ 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) [ 25.056218][ T242] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 25.056349][ T242] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 25.056506][ T242] do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 25.056666][ T242] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) [ 25.056822][ T242] ? tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1737) [ 25.056999][ T242] ? release_sock (net/core/sock.c:3630) [ 25.057157][ T242] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) [ 25.057311][ T242] ? release_sock (net/core/sock.c:3630) [ 25.057470][ T242] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 25.057628][ T242] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 25.057798][ T242] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.057956][ T242] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 25.058113][ T242] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 25.058270][ 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) [ 25.058425][ T242] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 25.058550][ T242] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 25.058718][ T242] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.058878][ T242] ? __lock_release (kernel/locking/lockdep.c:5501) [ 25.059037][ T242] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 25.059196][ T242] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 25.059351][ T242] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 25.059506][ T242] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.059666][ T242] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 25.059823][ T242] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 25.059986][ T242] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) [ 25.060148][ T242] do_sock_getsockopt (net/socket.c:2396) [ 25.060305][ T242] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 25.060463][ T242] ? __pfx_do_sock_getsockopt (net/socket.c:2374) [ 25.060629][ T242] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 25.060752][ T242] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) [ 25.060911][ T242] ? __pfx___sys_getsockopt (net/socket.c:2415) [ 25.061074][ T242] ? __pfx_task_work_run (kernel/task_work.c:207) [ 25.061239][ T242] __x64_sys_getsockopt (net/socket.c:2432) [ 25.061395][ T242] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 25.061587][ T242] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 25.061743][ T242] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 25.061940][ T242] RIP: 0033:0x7f258b54e46e [ 25.062105][ T242] 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 [ 25.062651][ T242] RSP: 002b:00007f258abf99c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 25.062887][ T242] RAX: ffffffffffffffda RBX: 00007f258abf9c80 RCX: 00007f258b54e46e [ 25.063123][ T242] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 000000000000000a [ 25.063359][ T242] RBP: 00007f258abf99e0 R08: 00007f258abf99dc R09: 0000000000000064 [ 25.063591][ T242] R10: 00007f258abf99e0 R11: 0000000000000246 R12: 000000000000000a [ 25.063824][ T242] R13: 0000000000000064 R14: 0000000000000080 R15: 0000000000000064 | [ 25.071054][ T242] 1 lock held by icmps-accept_ip/242: | [ 25.071217][ T242] #0: ffff888005f61098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) | [ 25.071543][ T242] | [ 25.071543][ T242] stack backtrace: [ 25.072025][ T242] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 25.072385][ T242] Call Trace: [ 25.072510][ T242] [ 25.072598][ T242] dump_stack_lvl (lib/dump_stack.c:123) [ 25.072764][ T242] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 25.072930][ T242] tcp_ao_finish_connect (net/ipv4/tcp_ao.c:1183 (discriminator 7)) [ 25.073093][ T242] tcp_finish_connect (net/ipv4/tcp_input.c:6340) [ 25.073261][ T242] tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6576) [ 25.073463][ 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) [ 25.073629][ T242] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 25.073756][ T242] ? __pfx_tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6455) [ 25.073960][ T242] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 25.074163][ T242] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 25.074327][ 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)) [ 25.074458][ T242] tcp_rcv_state_process (net/ipv4/tcp_input.c:6796) [ 25.074627][ T242] ? __lock_release (kernel/locking/lockdep.c:5501) [ 25.074787][ T242] ? __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) [ 25.074955][ T242] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6751) [ 25.075153][ 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) [ 25.075314][ T242] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 25.075441][ T242] tcp_v6_do_rcv (net/ipv6/tcp_ipv6.c:1676) [ 25.075607][ T242] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 25.075811][ T242] __release_sock (net/core/sock.c:3079) [ 25.075982][ T242] release_sock (net/core/sock.c:3633) [ 25.076144][ T242] inet_stream_connect (net/ipv4/af_inet.c:751) [ 25.076307][ T242] __sys_connect (net/socket.c:2071 net/socket.c:2088) [ 25.076471][ T242] ? __pfx___sys_connect (net/socket.c:2078) [ 25.076636][ T242] ? do_fcntl (fs/fcntl.c:473) [ 25.076766][ T242] ? __fget_files (fs/file.c:1009) [ 25.076940][ T242] __x64_sys_connect (net/socket.c:2095) [ 25.077103][ T242] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 25.077269][ T242] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 25.077473][ T242] RIP: 0033:0x7f258b54e40b [ 25.077641][ 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 [ 25.078214][ T242] RSP: 002b:00007f258abf9d80 EFLAGS: 00000293 ORIG_RAX: 000000000000002a [ 25.078457][ T242] RAX: ffffffffffffffda RBX: 000000000000001c RCX: 00007f258b54e40b [ 25.078702][ T242] RDX: 000000000000001c RSI: 00007f258abf9e00 RDI: 000000000000000a [ 25.078947][ T242] RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000414400 [ 25.079187][ T242] R10: 00007f258b406598 R11: 0000000000000293 R12: 000000000040e1d0 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