====================================== | [ 25.604624][ T233] 1 lock held by icmps-accept_ip/233: | [ 25.604790][ T233] #0: ffff888007cf3798 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) | [ 25.605097][ T233] | [ 25.605097][ T233] stack backtrace: [ 25.605715][ T233] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 25.606548][ T233] Call Trace: [ 25.606747][ T233] [ 25.606847][ T233] dump_stack_lvl (lib/dump_stack.c:123) [ 25.607109][ T233] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 25.607374][ T233] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) [ 25.607605][ T233] tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1698) [ 25.607859][ T233] ? __pfx_tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1597) [ 25.608113][ T233] ? 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) [ 25.608381][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 25.608696][ T233] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 25.608978][ T233] ? do_tcp_setsockopt (net/ipv4/tcp.c:3943) [ 25.609237][ T233] do_tcp_setsockopt (net/ipv4/tcp.c:3943) [ 25.609495][ T233] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) [ 25.609760][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 25.610039][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.610313][ T233] ? __lock_release (kernel/locking/lockdep.c:5501) [ 25.610568][ T233] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 25.610808][ T233] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 25.611045][ T233] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) [ 25.611312][ T233] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 25.611564][ T233] do_sock_setsockopt (net/socket.c:2334) [ 25.611811][ T233] ? __pfx_do_sock_setsockopt (net/socket.c:2303) [ 25.612016][ T233] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 25.612225][ T233] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) [ 25.612459][ T233] ? __pfx___sys_setsockopt (net/socket.c:2347) [ 25.612628][ T233] ? __rseq_handle_notify_resume (kernel/rseq.c:316) [ 25.612926][ T233] ? do_user_addr_fault (./include/linux/mmap_lock.h:172 arch/x86/mm/fault.c:1417) [ 25.613162][ T233] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:316) [ 25.613479][ T233] __x64_sys_setsockopt (net/socket.c:2363) [ 25.613719][ T233] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 25.614017][ T233] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 25.614276][ T233] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 25.614590][ T233] RIP: 0033:0x7f6324c8791e [ 25.614868][ T233] 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 [ 25.615724][ T233] RSP: 002b:00007fffe66c1e88 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 25.616102][ T233] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6324c8791e [ 25.616446][ T233] RDX: 0000000000000026 RSI: 0000000000000006 RDI: 0000000000000009 [ 25.616822][ T233] RBP: 0000000000000009 R08: 0000000000000120 R09: 0029383231736561 [ 25.617210][ T233] R10: 00007fffe66c1e90 R11: 0000000000000246 R12: 00007fffe66c1fb0 [ 25.617581][ T233] R13: 0000000000000020 R14: 0000000000400000 R15: 0000000401fe000a | [ 25.832370][ T240] 1 lock held by icmps-accept_ip/240: | [ 25.832530][ T240] #0: ffff888007cf2a58 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) | [ 25.832828][ T240] | [ 25.832828][ T240] stack backtrace: [ 25.833320][ T240] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 25.833674][ T240] Call Trace: [ 25.833799][ T240] [ 25.833886][ T240] dump_stack_lvl (lib/dump_stack.c:123) [ 25.834097][ T240] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 25.834265][ T240] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) [ 25.834435][ T240] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 25.834604][ T240] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) [ 25.834803][ T240] ? stack_depot_save_flags (lib/stackdepot.c:664) [ 25.834983][ T240] ? kasan_save_stack (mm/kasan/common.c:48) [ 25.835144][ T240] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) [ 25.835300][ T240] ? kasan_save_free_info (mm/kasan/generic.c:582) [ 25.835462][ T240] ? __kasan_slab_free (mm/kasan/common.c:271) [ 25.835621][ T240] ? kfree (mm/slub.c:4579 mm/slub.c:4727) [ 25.835744][ T240] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) [ 25.835931][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 25.836122][ T240] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) [ 25.836285][ T240] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.836452][ T240] ? __lock_release (kernel/locking/lockdep.c:5501) [ 25.836610][ T240] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 25.836772][ T240] ? 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) [ 25.836932][ T240] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 25.837078][ T240] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 25.837237][ T240] do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 25.837400][ T240] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) [ 25.837558][ T240] ? tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1737) [ 25.837759][ T240] ? release_sock (net/core/sock.c:3630) [ 25.837918][ T240] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) [ 25.838087][ T240] ? release_sock (net/core/sock.c:3630) [ 25.838249][ T240] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 25.838423][ T240] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 25.838593][ T240] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.838754][ T240] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 25.838913][ T240] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 25.839099][ T240] ? 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) [ 25.839258][ T240] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 25.839390][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 25.839561][ T240] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.839725][ T240] ? __lock_release (kernel/locking/lockdep.c:5501) [ 25.839888][ T240] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 25.840053][ T240] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 25.840209][ T240] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 25.840371][ T240] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.840533][ T240] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 25.840690][ T240] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 25.840851][ T240] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) [ 25.841028][ T240] do_sock_getsockopt (net/socket.c:2396) [ 25.841194][ T240] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 25.841358][ T240] ? __pfx_do_sock_getsockopt (net/socket.c:2374) [ 25.841528][ T240] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 25.841660][ T240] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) [ 25.841823][ T240] ? __pfx___sys_getsockopt (net/socket.c:2415) [ 25.842000][ T240] ? __pfx_task_work_run (kernel/task_work.c:207) [ 25.842163][ T240] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:729 arch/x86/mm/fault.c:1340) [ 25.842328][ T240] __x64_sys_getsockopt (net/socket.c:2432) [ 25.842492][ T240] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 25.842692][ T240] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 25.842855][ T240] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 25.843073][ T240] RIP: 0033:0x7f6324c8746e [ 25.843241][ T240] 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 [ 25.843812][ T240] RSP: 002b:00007f631fffe9c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 25.844136][ T240] RAX: ffffffffffffffda RBX: 00007f631fffec80 RCX: 00007f6324c8746e [ 25.844528][ T240] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 000000000000000a [ 25.844919][ T240] RBP: 00007f631fffe9e0 R08: 00007f631fffe9dc R09: 0000000000000064 [ 25.845265][ T240] R10: 00007f631fffe9e0 R11: 0000000000000246 R12: 000000000000000a [ 25.845515][ T240] R13: 0000000000000064 R14: 0000000000000020 R15: 0000000000000064 | [ 25.858967][ T240] 1 lock held by icmps-accept_ip/240: | [ 25.859121][ T240] #0: ffff888007cf2a58 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) | [ 25.859424][ T240] | [ 25.859424][ T240] stack backtrace: [ 25.859876][ T240] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 25.860216][ T240] Call Trace: [ 25.860336][ T240] [ 25.860424][ T240] dump_stack_lvl (lib/dump_stack.c:123) [ 25.860588][ T240] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 25.860750][ T240] tcp_ao_finish_connect (net/ipv4/tcp_ao.c:1183 (discriminator 7)) [ 25.860904][ T240] tcp_finish_connect (net/ipv4/tcp_input.c:6340) [ 25.861062][ T240] tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6576) [ 25.861257][ T240] ? 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) [ 25.861415][ T240] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 25.861536][ T240] ? __pfx_tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6455) [ 25.861727][ T240] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 25.861923][ T240] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 25.862077][ T240] ? 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)) [ 25.862195][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 25.862352][ T240] tcp_rcv_state_process (net/ipv4/tcp_input.c:6796) [ 25.862504][ T240] ? __lock_release (kernel/locking/lockdep.c:5501) [ 25.862660][ T240] ? __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) [ 25.862817][ T240] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6751) [ 25.863005][ T240] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 25.863133][ T240] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1945) [ 25.863305][ T240] __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) [ 25.863463][ T240] release_sock (net/core/sock.c:3633) [ 25.863621][ T240] inet_stream_connect (net/ipv4/af_inet.c:751) [ 25.863776][ T240] __sys_connect (net/socket.c:2071 net/socket.c:2088) [ 25.863943][ T240] ? __pfx___sys_connect (net/socket.c:2078) [ 25.864096][ T240] ? do_fcntl (fs/fcntl.c:473) [ 25.864214][ T240] ? __pfx_do_fcntl (fs/fcntl.c:443) [ 25.864377][ T240] ? __fget_files (fs/file.c:1009) [ 25.864546][ T240] __x64_sys_connect (net/socket.c:2095) [ 25.864702][ T240] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 25.864860][ T240] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 25.865050][ T240] RIP: 0033:0x7f6324c8740b [ 25.865209][ T240] 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 [ 25.865739][ T240] RSP: 002b:00007f631fffed80 EFLAGS: 00000293 ORIG_RAX: 000000000000002a [ 25.865976][ T240] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007f6324c8740b [ 25.866206][ T240] RDX: 0000000000000010 RSI: 00007f631fffee00 RDI: 000000000000000a [ 25.866442][ T240] RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000414400 [ 25.866672][ T240] R10: 00007f6324b3f598 R11: 0000000000000293 R12: 000000000040e1c0 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