====================================== | [ 27.350424][ T233] 1 lock held by icmps-discard_i/233: | [ 27.350609][ T233] #0: ffff888003683798 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) | [ 27.350891][ T233] | [ 27.350891][ T233] stack backtrace: [ 27.351356][ T233] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 27.351713][ T233] Call Trace: [ 27.351840][ T233] [ 27.351924][ T233] dump_stack_lvl (lib/dump_stack.c:123) [ 27.352079][ T233] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 27.352250][ T233] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) [ 27.352407][ T233] tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1698) [ 27.352578][ T233] ? __pfx_tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1597) [ 27.352728][ 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) [ 27.352883][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 27.353071][ T233] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 27.353224][ T233] ? do_tcp_setsockopt (net/ipv4/tcp.c:3943) [ 27.353386][ T233] do_tcp_setsockopt (net/ipv4/tcp.c:3943) [ 27.353542][ T233] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) [ 27.353704][ T233] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 27.353867][ T233] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 27.354016][ T233] ? __lock_release (kernel/locking/lockdep.c:5501) [ 27.354168][ T233] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 27.354316][ T233] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 27.354486][ T233] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) [ 27.354643][ T233] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 27.354822][ T233] do_sock_setsockopt (net/socket.c:2334) [ 27.355035][ T233] ? __pfx_do_sock_setsockopt (net/socket.c:2303) [ 27.355195][ T233] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 27.355314][ T233] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) [ 27.355468][ T233] ? __pfx___sys_setsockopt (net/socket.c:2347) [ 27.355613][ T233] ? __rseq_handle_notify_resume (kernel/rseq.c:316) [ 27.355799][ T233] ? do_user_addr_fault (./include/linux/mmap_lock.h:172 arch/x86/mm/fault.c:1417) [ 27.355960][ T233] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:316) [ 27.356149][ T233] __x64_sys_setsockopt (net/socket.c:2363) [ 27.356293][ T233] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 27.356596][ T233] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 27.356749][ T233] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 27.356941][ T233] RIP: 0033:0x7f6887b7091e [ 27.357095][ 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 [ 27.357625][ T233] RSP: 002b:00007ffc696a2568 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 27.357843][ T233] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6887b7091e [ 27.358066][ T233] RDX: 0000000000000026 RSI: 0000000000000006 RDI: 0000000000000009 [ 27.358287][ T233] RBP: 0000000000000009 R08: 0000000000000120 R09: 0029383231736561 [ 27.358508][ T233] R10: 00007ffc696a2570 R11: 0000000000000246 R12: 00007ffc696a2690 [ 27.358733][ T233] R13: 0000000000000020 R14: 0000000000400000 R15: 0000000401fe000a | [ 27.574946][ T240] 1 lock held by icmps-discard_i/240: | [ 27.575093][ T240] #0: ffff888003682a58 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) | [ 27.575367][ T240] | [ 27.575367][ T240] stack backtrace: [ 27.575812][ T240] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 27.576126][ T240] Call Trace: [ 27.576237][ T240] [ 27.576319][ T240] dump_stack_lvl (lib/dump_stack.c:123) [ 27.576471][ T240] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 27.576625][ T240] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) [ 27.576772][ T240] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 27.576928][ T240] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) [ 27.577109][ T240] ? stack_depot_save_flags (lib/stackdepot.c:664) [ 27.577260][ T240] ? kasan_save_stack (mm/kasan/common.c:48) [ 27.577406][ T240] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) [ 27.577553][ T240] ? kasan_save_free_info (mm/kasan/generic.c:582) [ 27.577697][ T240] ? __kasan_slab_free (mm/kasan/common.c:271) [ 27.577841][ T240] ? kfree (mm/slub.c:4579 mm/slub.c:4727) [ 27.577952][ T240] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) [ 27.578128][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 27.578283][ T240] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) [ 27.578430][ T240] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 27.578578][ T240] ? __lock_release (kernel/locking/lockdep.c:5501) [ 27.578726][ T240] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 27.578873][ 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) [ 27.579017][ T240] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 27.579136][ T240] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 27.579280][ T240] do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 27.579426][ T240] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) [ 27.579568][ T240] ? tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1737) [ 27.579731][ T240] ? release_sock (net/core/sock.c:3630) [ 27.579878][ T240] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) [ 27.580022][ T240] ? release_sock (net/core/sock.c:3630) [ 27.580169][ T240] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 27.580314][ T240] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 27.580459][ T240] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 27.580608][ T240] ? __lock_release (kernel/locking/lockdep.c:5501) [ 27.580752][ T240] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 27.580896][ 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) [ 27.581041][ T240] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 27.581160][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 27.581316][ T240] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 27.581462][ T240] ? __lock_release (kernel/locking/lockdep.c:5501) [ 27.581607][ T240] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 27.581752][ T240] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 27.581894][ T240] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 27.582038][ T240] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 27.582188][ T240] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 27.582334][ T240] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 27.582481][ T240] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) [ 27.582629][ T240] do_sock_getsockopt (net/socket.c:2396) [ 27.582776][ T240] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 27.582925][ T240] ? __pfx_do_sock_getsockopt (net/socket.c:2374) [ 27.583077][ T240] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 27.583191][ T240] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) [ 27.583339][ T240] ? __sys_setsockopt (net/socket.c:2360) [ 27.583484][ T240] ? __pfx___sys_getsockopt (net/socket.c:2415) [ 27.583641][ T240] __x64_sys_getsockopt (net/socket.c:2432) [ 27.583785][ T240] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 27.583963][ T240] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 27.584112][ T240] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 27.584299][ T240] RIP: 0033:0x7f6887b7046e [ 27.584452][ 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 [ 27.585079][ T240] RSP: 002b:00007f688721b9c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 27.585298][ T240] RAX: ffffffffffffffda RBX: 00007f688721bc80 RCX: 00007f6887b7046e [ 27.585514][ T240] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 000000000000000a [ 27.585730][ T240] RBP: 00007f688721b9e0 R08: 00007f688721b9dc R09: 0000000000000064 [ 27.585948][ T240] R10: 00007f688721b9e0 R11: 0000000000000246 R12: 000000000000000a [ 27.586162][ T240] R13: 0000000000000064 R14: 0000000000000020 R15: 0000000000000064 | [ 27.596210][ T240] 1 lock held by icmps-discard_i/240: | [ 27.596457][ T240] #0: ffff888003682a58 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) | [ 27.597031][ T240] | [ 27.597031][ T240] stack backtrace: [ 27.597772][ T240] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 27.598314][ T240] Call Trace: [ 27.598502][ T240] [ 27.598628][ T240] dump_stack_lvl (lib/dump_stack.c:123) [ 27.598878][ T240] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 27.599134][ T240] tcp_ao_finish_connect (net/ipv4/tcp_ao.c:1183 (discriminator 7)) [ 27.599373][ T240] tcp_finish_connect (net/ipv4/tcp_input.c:6340) [ 27.599621][ T240] tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6576) [ 27.599946][ 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) [ 27.600194][ T240] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 27.600385][ T240] ? __pfx_tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6455) [ 27.600687][ T240] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 27.600982][ T240] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 27.601218][ 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)) [ 27.601403][ T240] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 27.601654][ T240] tcp_rcv_state_process (net/ipv4/tcp_input.c:6796) [ 27.601848][ T240] ? __lock_release (kernel/locking/lockdep.c:5501) [ 27.601999][ T240] ? __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) [ 27.602184][ T240] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6751) [ 27.602408][ T240] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 27.602549][ T240] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1945) [ 27.602803][ T240] __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) [ 27.602997][ T240] release_sock (net/core/sock.c:3633) [ 27.603150][ T240] inet_stream_connect (net/ipv4/af_inet.c:751) [ 27.603365][ T240] __sys_connect (net/socket.c:2071 net/socket.c:2088) [ 27.603603][ T240] ? __pfx___sys_connect (net/socket.c:2078) [ 27.603850][ T240] ? do_fcntl (fs/fcntl.c:473) [ 27.603978][ T240] ? __pfx_do_fcntl (fs/fcntl.c:443) [ 27.604173][ T240] ? __fget_files (fs/file.c:1009) [ 27.604431][ T240] __x64_sys_connect (net/socket.c:2095) [ 27.604677][ T240] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 27.604938][ T240] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 27.605233][ T240] RIP: 0033:0x7f6887b7040b [ 27.605488][ 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 [ 27.606335][ T240] RSP: 002b:00007f688721bd80 EFLAGS: 00000293 ORIG_RAX: 000000000000002a [ 27.606709][ T240] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007f6887b7040b [ 27.607074][ T240] RDX: 0000000000000010 RSI: 00007f688721be00 RDI: 000000000000000a [ 27.607440][ T240] RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000414400 [ 27.607807][ T240] R10: 00007f6887a28598 R11: 0000000000000293 R12: 000000000040e198 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