====================================== | [ 25.970724][ T241] 1 lock held by restore_ipv4/241: | [ 25.970885][ T241] #0: ffff8880079caa58 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_getsockopt (net/ipv4/tcp.c:4631) | [ 25.971195][ T241] | [ 25.971195][ T241] stack backtrace: [ 25.971685][ T241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 25.972038][ T241] Call Trace: [ 25.972164][ T241] [ 25.972279][ T241] dump_stack_lvl (lib/dump_stack.c:123) [ 25.972444][ T241] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 25.972612][ T241] tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2232 (discriminator 7)) [ 25.972772][ T241] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 25.972937][ T241] ? __pfx_tcp_ao_copy_mkts_to_user (net/ipv4/tcp_ao.c:2106) [ 25.973146][ T241] ? stack_depot_save_flags (lib/stackdepot.c:664) [ 25.973315][ T241] ? kasan_save_stack (mm/kasan/common.c:48) [ 25.973480][ T241] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) [ 25.973641][ T241] ? kasan_save_free_info (mm/kasan/generic.c:582) [ 25.973801][ T241] ? __kasan_slab_free (mm/kasan/common.c:271) [ 25.973957][ T241] ? kfree (mm/slub.c:4579 mm/slub.c:4727) [ 25.974093][ T241] ? tcp_ao_parse_crypto (./include/net/tcp_ao.h:67 net/ipv4/tcp_ao.c:1436) [ 25.974270][ T241] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 25.974424][ T241] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) [ 25.974583][ T241] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.974747][ T241] ? __lock_release (kernel/locking/lockdep.c:5501) [ 25.974902][ T241] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 25.975093][ 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) [ 25.975319][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 25.975444][ T241] ? do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 25.975596][ T241] do_tcp_getsockopt (net/ipv4/tcp.c:4631) [ 25.975749][ T241] ? __pfx_do_tcp_getsockopt (net/ipv4/tcp.c:4300) [ 25.975896][ T241] ? tcp_ao_add_cmd (net/ipv4/tcp_ao.c:1737) [ 25.976074][ T241] ? release_sock (net/core/sock.c:3630) [ 25.976226][ T241] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) [ 25.976375][ T241] ? release_sock (net/core/sock.c:3630) [ 25.976527][ T241] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 25.976681][ T241] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) [ 25.976842][ T241] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.977007][ T241] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 25.977176][ T241] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 25.977342][ 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) [ 25.977502][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 25.977627][ T241] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 25.977795][ T241] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.977956][ T241] ? __lock_release (kernel/locking/lockdep.c:5501) [ 25.978118][ T241] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 25.978280][ T241] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 25.978433][ T241] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 25.978592][ T241] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 25.978751][ T241] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 25.978912][ T241] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) [ 25.979080][ T241] tcp_getsockopt (net/ipv4/tcp.c:4673 net/ipv4/tcp.c:4664) [ 25.979244][ T241] do_sock_getsockopt (net/socket.c:2396) [ 25.979407][ T241] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 25.979579][ T241] ? __pfx_do_sock_getsockopt (net/socket.c:2374) [ 25.979744][ T241] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 25.979867][ T241] __sys_getsockopt (./include/linux/file.h:35 net/socket.c:2428) [ 25.980049][ T241] ? __pfx___sys_getsockopt (net/socket.c:2415) [ 25.980208][ T241] ? __pfx_task_work_run (kernel/task_work.c:207) [ 25.980371][ T241] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:729 arch/x86/mm/fault.c:1340) [ 25.980534][ T241] __x64_sys_getsockopt (net/socket.c:2432) [ 25.980682][ T241] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 25.980879][ T241] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 25.981048][ T241] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 25.981245][ T241] RIP: 0033:0x7f93afd3e46e [ 25.981416][ 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 [ 25.981949][ T241] RSP: 002b:00007f93af3e9858 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 25.982177][ T241] RAX: ffffffffffffffda RBX: 00007f93af3e9b10 RCX: 00007f93afd3e46e [ 25.982399][ T241] RDX: 0000000000000029 RSI: 0000000000000006 RDI: 000000000000000a [ 25.982621][ T241] RBP: 00007f93af3e9870 R08: 00007f93af3e986c R09: 0000000000000064 [ 25.982834][ T241] R10: 00007f93af3e9870 R11: 0000000000000246 R12: 000000000000000a [ 25.983063][ T241] R13: 0000000000000064 R14: 0000000000000020 R15: 0000000000000064 | [ 25.986911][ T241] 1 lock held by restore_ipv4/241: | [ 25.987072][ T241] #0: ffff8880079caa58 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) | [ 25.987376][ T241] | [ 25.987376][ T241] stack backtrace: [ 25.987852][ T241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 25.988203][ T241] Call Trace: [ 25.988330][ T241] [ 25.988417][ T241] dump_stack_lvl (lib/dump_stack.c:123) [ 25.988584][ T241] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 25.988745][ T241] __tcp_ao_do_lookup.part.0 (net/ipv4/tcp_ao.c:208) [ 25.988909][ T241] tcp_v4_ao_lookup (net/ipv4/tcp_ao.c:200 net/ipv4/tcp_ao.c:222 net/ipv4/tcp_ao.c:720) [ 25.989074][ T241] tcp_connect (net/ipv4/tcp_output.c:4114) [ 25.989241][ T241] tcp_v4_connect (net/ipv4/tcp_ipv4.c:342) [ 25.989424][ T241] ? __pfx_tcp_v4_connect (net/ipv4/tcp_ipv4.c:220) [ 25.989590][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 25.989719][ T241] __inet_stream_connect (net/ipv4/af_inet.c:677) [ 25.989878][ T241] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 25.990077][ T241] inet_stream_connect (net/ipv4/af_inet.c:749) [ 25.990241][ T241] __sys_connect (net/socket.c:2071 net/socket.c:2088) [ 25.990404][ T241] ? __pfx___sys_connect (net/socket.c:2078) [ 25.990563][ T241] ? do_fcntl (fs/fcntl.c:473) [ 25.990690][ T241] ? __pfx_do_fcntl (fs/fcntl.c:443) [ 25.990858][ T241] ? __fget_files (fs/file.c:1009) [ 25.991029][ T241] __x64_sys_connect (net/socket.c:2095) [ 25.991190][ T241] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 25.991361][ T241] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 25.991568][ T241] RIP: 0033:0x7f93afd3e40b [ 25.991730][ 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 [ 25.992353][ T241] RSP: 002b:00007f93af3e9c10 EFLAGS: 00000293 ORIG_RAX: 000000000000002a [ 25.992598][ T241] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007f93afd3e40b [ 25.992837][ T241] RDX: 0000000000000010 RSI: 00007f93af3e9c60 RDI: 000000000000000a [ 25.993073][ T241] RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000415460 [ 25.993314][ T241] R10: 00007f93afbf6598 R11: 0000000000000293 R12: 0000000000410270 [ 25.993557][ T241] R13: 0000000000000005 R14: 00007f93af3e9c60 R15: ffffffffffffffe0 | [ 26.011643][ T241] 1 lock held by restore_ipv4/241: | [ 26.011803][ T241] #0: ffff8880079caa58 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_stream_connect (net/ipv4/af_inet.c:748) | [ 26.012094][ T241] | [ 26.012094][ T241] stack backtrace: [ 26.012583][ T241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 26.012964][ T241] Call Trace: [ 26.013089][ T241] [ 26.013178][ T241] dump_stack_lvl (lib/dump_stack.c:123) [ 26.013349][ T241] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 26.013519][ T241] tcp_ao_finish_connect (net/ipv4/tcp_ao.c:1183 (discriminator 7)) [ 26.013684][ T241] tcp_finish_connect (net/ipv4/tcp_input.c:6340) [ 26.013851][ T241] tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6576) [ 26.014058][ 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) [ 26.014225][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 26.014355][ T241] ? __pfx_tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6455) [ 26.014559][ T241] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 26.014761][ T241] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 26.014925][ 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)) [ 26.015053][ T241] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 26.015220][ T241] tcp_rcv_state_process (net/ipv4/tcp_input.c:6796) [ 26.015387][ T241] ? __lock_release (kernel/locking/lockdep.c:5501) [ 26.015548][ T241] ? __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) [ 26.015713][ T241] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6751) [ 26.015914][ T241] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 26.016058][ T241] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1945) [ 26.016236][ T241] __release_sock (./include/net/sock.h:1121 net/core/sock.c:3077) [ 26.016406][ T241] release_sock (net/core/sock.c:3633) [ 26.016568][ T241] inet_stream_connect (net/ipv4/af_inet.c:751) [ 26.016738][ T241] __sys_connect (net/socket.c:2071 net/socket.c:2088) [ 26.016902][ T241] ? __pfx___sys_connect (net/socket.c:2078) [ 26.017063][ T241] ? do_fcntl (fs/fcntl.c:473) [ 26.017188][ T241] ? __pfx_do_fcntl (fs/fcntl.c:443) [ 26.017352][ T241] ? __fget_files (fs/file.c:1009) [ 26.017529][ T241] __x64_sys_connect (net/socket.c:2095) [ 26.017694][ T241] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 26.017860][ T241] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 26.018060][ T241] RIP: 0033:0x7f93afd3e40b [ 26.018236][ 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 [ 26.018805][ T241] RSP: 002b:00007f93af3e9c10 EFLAGS: 00000293 ORIG_RAX: 000000000000002a [ 26.019050][ T241] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007f93afd3e40b [ 26.019294][ T241] RDX: 0000000000000010 RSI: 00007f93af3e9c60 RDI: 000000000000000a [ 26.019550][ T241] RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000415460 [ 26.019793][ T241] R10: 00007f93afbf6598 R11: 0000000000000293 R12: 0000000000410270 [ 26.020038][ T241] R13: 0000000000000005 R14: 00007f93af3e9c60 R15: ffffffffffffffe0 | [ 26.048066][ T241] 1 lock held by restore_ipv4/241: | [ 26.048212][ T241] #0: ffff8880079cd218 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_setsockopt (net/ipv4/tcp.c:3809) | [ 26.048515][ T241] | [ 26.048515][ T241] stack backtrace: [ 26.048963][ T241] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 26.049281][ T241] Call Trace: [ 26.049395][ T241] [ 26.049486][ T241] dump_stack_lvl (lib/dump_stack.c:123) [ 26.049642][ T241] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) [ 26.049790][ T241] tcp_ao_set_repair (net/ipv4/tcp_ao.c:2399 (discriminator 7)) [ 26.049940][ 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) [ 26.050093][ T241] ? __pfx_tcp_ao_set_repair (net/ipv4/tcp_ao.c:2371) [ 26.050255][ T241] do_tcp_setsockopt (net/ipv4/tcp.c:3924) [ 26.050403][ T241] ? __pfx_do_tcp_setsockopt (net/ipv4/tcp.c:3705) [ 26.050549][ T241] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 26.050701][ T241] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 26.050854][ T241] ? __lock_release (kernel/locking/lockdep.c:5501) [ 26.051000][ T241] ? __fget_files (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 fs/file.c:1006) [ 26.051148][ T241] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 26.051295][ T241] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) [ 26.051439][ T241] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 26.051587][ T241] do_sock_setsockopt (net/socket.c:2334) [ 26.051736][ T241] ? __pfx_do_sock_setsockopt (net/socket.c:2303) [ 26.051898][ T241] ? fdget (fs/file.c:1121 fs/file.c:1128) [ 26.052016][ T241] __sys_setsockopt (./include/linux/file.h:35 net/socket.c:2359) [ 26.052161][ T241] ? __pfx___sys_setsockopt (net/socket.c:2347) [ 26.052314][ T241] ? __fget_files (fs/file.c:1009) [ 26.052460][ T241] ? __pfx___sys_socket (net/socket.c:1712) [ 26.052611][ T241] __x64_sys_setsockopt (net/socket.c:2363) [ 26.052761][ T241] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 26.052949][ T241] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 26.053094][ T241] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 26.053275][ T241] RIP: 0033:0x7f93afd3e91e [ 26.053425][ T241] 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 [ 26.053927][ T241] RSP: 002b:00007f93af3e99d8 EFLAGS: 00000202 ORIG_RAX: 0000000000000036 [ 26.054156][ T241] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f93afd3e91e [ 26.054380][ T241] RDX: 000000000000002a RSI: 0000000000000006 RDI: 000000000000000a [ 26.054605][ T241] RBP: 000000000000000a R08: 0000000000000010 R09: 0000000000000064 [ 26.054830][ T241] R10: 00007f93af3e9cb0 R11: 0000000000000202 R12: 00007f93af3e9b30 Finger prints: lockdep_rcu_suspicious:tcp_v4_ao_lookup:tcp_connect:tcp_v4_connect:__inet_stream_connect lockdep_rcu_suspicious:tcp_ao_copy_mkts_to_user:do_tcp_getsockopt:tcp_getsockopt:do_sock_getsockopt lockdep_rcu_suspicious:tcp_ao_finish_connect:tcp_finish_connect:tcp_rcv_synsent_state_process:tcp_rcv_state_process lockdep_rcu_suspicious:tcp_ao_set_repair:do_tcp_setsockopt:do_sock_setsockopt:__sys_setsockopt