====================================== | [ 27.385862][ T234] 1 lock held by icmps-discard_i/234: | [ 27.386045][ T234] #0: ffff888005769e98 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) | [ 27.386398][ T234] | [ 27.386398][ T234] stack backtrace: [ 27.386878][ T234] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 27.387228][ T234] Call Trace: [ 27.387352][ T234] [ 27.387445][ T234] dump_stack_lvl (lib/dump_stack.c:123) [ 27.387607][ T234] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 27.387770][ T234] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) [ 27.387934][ T234] tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1698) [ 27.388102][ T234] ? __pfx_tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1597) [ 27.388258][ 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) [ 27.388461][ T234] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 27.388632][ T234] ? do_tcp_setsockopt (net/ipv4/tcp.c:3943) [ 27.388796][ T234] do_tcp_setsockopt (net/ipv4/tcp.c:3943) [ 27.388958][ T234] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) [ 27.389109][ T234] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 27.389270][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 27.389432][ T234] ? __lock_release (kernel/locking/lockdep.c:5501) [ 27.389579][ T234] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 27.389735][ T234] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 27.389894][ T234] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) [ 27.390041][ T234] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 27.390195][ T234] do_sock_setsockopt (net/socket.c:2334) [ 27.390354][ T234] ? __pfx_do_sock_setsockopt (net/socket.c:2303) [ 27.390516][ T234] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 27.390643][ T234] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) [ 27.390801][ T234] ? __pfx___sys_setsockopt (net/socket.c:2347) [ 27.390960][ T234] ? __rseq_handle_notify_resume (kernel/rseq.c:316) [ 27.391170][ T234] ? do_user_addr_fault (./include/linux/mmap_lock.h:172 arch/x86/mm/fault.c:1417) [ 27.391333][ T234] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:316) [ 27.391538][ T234] __x64_sys_setsockopt (net/socket.c:2363) [ 27.391696][ T234] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 27.391900][ T234] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 27.392060][ T234] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 27.392262][ T234] RIP: 0033:0x7fb1ffea691e [ 27.392433][ 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 [ 27.392990][ T234] RSP: 002b:00007ffcf30862a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 27.393238][ T234] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb1ffea691e [ 27.393473][ T234] RDX: 0000000000000026 RSI: 0000000000000006 RDI: 0000000000000009 [ 27.393704][ T234] RBP: 0000000000000009 R08: 0000000000000120 R09: 0029383231736561 [ 27.393940][ T234] R10: 00007ffcf30862b0 R11: 0000000000000246 R12: 00007ffcf30863d0 [ 27.394176][ T234] R13: 0000000000000080 R14: 0100000000000000 R15: 00005402b80d0120 | [ 27.614305][ T234] 1 lock held by icmps-discard_i/234: | [ 27.614461][ T234] #0: ffff888005769e98 (sk_lock-AF_INET6){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) | [ 27.614812][ T234] | [ 27.614812][ T234] stack backtrace: [ 27.615282][ T234] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 27.615634][ T234] Call Trace: [ 27.615754][ T234] [ 27.615839][ T234] dump_stack_lvl (lib/dump_stack.c:123) [ 27.616004][ T234] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 27.616167][ T234] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) [ 27.616324][ T234] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 27.616489][ T234] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) [ 27.616689][ T234] ? stack_depot_save_flags (lib/stackdepot.c:664) [ 27.616848][ T234] ? kasan_save_stack (mm/kasan/common.c:48) [ 27.617005][ T234] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) [ 27.617163][ T234] ? kfree (mm/slub.c:4579 mm/slub.c:4727) [ 27.617280][ T234] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) [ 27.617467][ T234] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 27.617633][ T234] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) [ 27.617787][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 27.618006][ T234] ? __lock_release (kernel/locking/lockdep.c:5501) [ 27.618166][ T234] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 27.618325][ 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) [ 27.618480][ T234] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 27.618608][ T234] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 27.618764][ T234] do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 27.618923][ T234] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) [ 27.619081][ T234] ? tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1723 (discriminator 4)) [ 27.619261][ T234] ? release_sock (net/core/sock.c:3630) [ 27.619407][ T234] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) [ 27.619559][ T234] ? release_sock (net/core/sock.c:3630) [ 27.619706][ T234] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 27.619857][ T234] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 27.620008][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 27.620164][ T234] ? __lock_release (kernel/locking/lockdep.c:5501) [ 27.620343][ T234] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 27.620500][ 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) [ 27.620658][ T234] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 27.620787][ T234] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 27.620975][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 27.621144][ T234] ? __lock_release (kernel/locking/lockdep.c:5501) [ 27.621309][ T234] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 27.621455][ T234] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 27.621602][ T234] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 27.621746][ T234] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 27.621901][ T234] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 27.622050][ T234] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 27.622214][ T234] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) [ 27.622365][ T234] do_sock_getsockopt (net/socket.c:2396) [ 27.622510][ T234] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 27.622663][ T234] ? __pfx_do_sock_getsockopt (net/socket.c:2374) [ 27.622818][ T234] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 27.622937][ T234] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) [ 27.623084][ T234] ? __sys_setsockopt (net/socket.c:2360) [ 27.623232][ T234] ? __pfx___sys_getsockopt (net/socket.c:2415) [ 27.623376][ T234] ? __rseq_handle_notify_resume (kernel/rseq.c:316) [ 27.623563][ T234] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:316) [ 27.623762][ T234] __x64_sys_getsockopt (net/socket.c:2432) [ 27.623907][ T234] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 27.624090][ T234] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 27.624262][ T234] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 27.624444][ T234] RIP: 0033:0x7fb1ffea646e [ 27.624609][ 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 [ 27.625128][ T234] RSP: 002b:00007ffcf3086118 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 27.625364][ T234] RAX: ffffffffffffffda RBX: 00007ffcf30863d0 RCX: 00007fb1ffea646e [ 27.625599][ T234] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 0000000000000009 [ 27.625824][ T234] RBP: 00007ffcf3086130 R08: 00007ffcf308612c R09: 0000000000000064 [ 27.626051][ T234] R10: 00007ffcf3086130 R11: 0000000000000246 R12: 0000000000000009 [ 27.626277][ T234] R13: 0000000000000064 R14: 0000000000000080 R15: 0000000000000064 | [ 27.634315][ T241] 1 lock held by icmps-discard_i/241: | [ 27.634474][ T241] #0: ffff888005769098 (sk_lock-AF_INET6){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) | [ 27.634759][ T241] | [ 27.634759][ T241] stack backtrace: [ 27.635219][ T241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 27.635567][ T241] Call Trace: [ 27.635686][ T241] [ 27.635767][ T241] dump_stack_lvl (lib/dump_stack.c:123) [ 27.635930][ T241] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 27.636086][ T241] tcp_ao_finish_connect (net/ipv4/tcp_ao.c:1183 (discriminator 7)) [ 27.636241][ T241] tcp_finish_connect (net/ipv4/tcp_input.c:6340) [ 27.636407][ T241] tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6576) [ 27.636596][ 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) [ 27.636752][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 27.636871][ T241] ? __pfx_tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6455) [ 27.637060][ T241] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 27.637247][ T241] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 27.637413][ 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)) [ 27.637539][ T241] tcp_rcv_state_process (net/ipv4/tcp_input.c:6796) [ 27.637693][ T241] ? __lock_release (kernel/locking/lockdep.c:5501) [ 27.637845][ T241] ? __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) [ 27.637997][ T241] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6751) [ 27.638185][ 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) [ 27.638348][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 27.638475][ T241] tcp_v6_do_rcv (net/ipv6/tcp_ipv6.c:1676) [ 27.638630][ T241] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 27.638826][ T241] __release_sock (net/core/sock.c:3079) [ 27.638986][ T241] release_sock (net/core/sock.c:3633) [ 27.639169][ T241] inet_stream_connect (net/ipv4/af_inet.c:751) [ 27.639369][ T241] __sys_connect (net/socket.c:2071 net/socket.c:2088) [ 27.639608][ T241] ? __pfx___sys_connect (net/socket.c:2078) [ 27.639757][ T241] ? do_fcntl (fs/fcntl.c:473) [ 27.639878][ T241] ? __fget_files (fs/file.c:1009) [ 27.640079][ T241] __x64_sys_connect (net/socket.c:2095) [ 27.640241][ T241] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 27.640413][ T241] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 27.640609][ T241] RIP: 0033:0x7fb1ffea640b [ 27.640775][ 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 [ 27.641327][ T241] RSP: 002b:00007fb1ff551d80 EFLAGS: 00000293 ORIG_RAX: 000000000000002a [ 27.641564][ T241] RAX: ffffffffffffffda RBX: 000000000000001c RCX: 00007fb1ffea640b [ 27.641794][ T241] RDX: 000000000000001c RSI: 00007fb1ff551e00 RDI: 000000000000000a [ 27.642028][ T241] RBP: 000000000000000a R08: 0000000000000000 R09: 00000000ffffffff [ 27.642254][ T241] R10: 00007fb1ffd5e598 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