====================================== | [ 60.743180][ C0] #6: ffffffff96d447e0 (rcu_read_lock){....}-{1:2}, at: netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5696 (discriminator 16)) | [ 60.743727][ C0] #7: ffffffff96d447e0 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/ipv4/ip_input.c:232) | [ 60.744295][ C0] | [ 60.744295][ C0] stack backtrace: [ 60.745022][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 60.745688][ C0] Call Trace: [ 60.745869][ C0] [ 60.746047][ C0] dump_stack_lvl (lib/dump_stack.c:107) [ 60.746314][ C0] validate_chain (kernel/locking/lockdep.c:3859) [ 60.746581][ C0] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 60.746857][ C0] ? 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) [ 60.747125][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 60.747351][ C0] __lock_acquire (kernel/locking/lockdep.c:5137) [ 60.747620][ C0] ? lock_downgrade (kernel/locking/lockdep.c:5656) [ 60.747905][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 60.748147][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 60.748416][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 60.748677][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 60.748975][ C0] ? __pfx_sk_filter_trim_cap (net/core/filter.c:130) [ 60.749287][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 60.749536][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 60.749798][ C0] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) [ 60.750070][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 60.750344][ C0] tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 60.750585][ C0] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2162) [ 60.750846][ C0] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) [ 60.751131][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 60.751429][ C0] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) [ 60.751720][ C0] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 60.752030][ C0] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 60.752305][ C0] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 60.752583][ C0] ? tcp_v4_early_demux (./include/linux/skbuff.h:1163 net/ipv4/tcp_ipv4.c:1988) [ 60.752852][ C0] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1131 ./include/linux/skbuff.h:1183 net/ipv4/ip_input.c:390) [ 60.753194][ C0] ip_rcv (./include/net/dst.h:460 net/ipv4/ip_input.c:449 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:569) [ 60.753402][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 60.753655][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 60.753924][ C0] ? netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5696 (discriminator 16)) [ 60.754246][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 60.754481][ C0] __netif_receive_skb_one_core (net/core/dev.c:5509 (discriminator 4)) [ 60.754806][ C0] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5502) [ 60.755138][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 60.755400][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 60.755641][ C0] ? netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5696 (discriminator 16)) [ 60.755972][ C0] netif_receive_skb_internal (net/core/dev.c:5709) [ 60.756291][ C0] ? __pfx_netif_receive_skb_internal (net/core/dev.c:5688) [ 60.756630][ C0] ? __copy_skb_header (./include/net/dst.h:290 net/core/skbuff.c:1420) [ 60.756892][ C0] ? __skb_clone (./arch/x86/include/asm/atomic.h:53 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:992 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:436 (discriminator 4) net/core/skbuff.c:1491 (discriminator 4)) [ 60.757148][ C0] netif_receive_skb (net/core/dev.c:5768) [ 60.757401][ C0] tcf_mirred_to_dev (net/sched/act_mirred.c:251 net/sched/act_mirred.c:326) act_mirred [ 60.757732][ C0] ? __pfx_tcf_skbedit_act (net/sched/act_skbedit.c:43) act_skbedit [ 60.758072][ C0] tcf_mirred_act (net/sched/act_mirred.c:461 (discriminator 2)) act_mirred [ 60.758405][ C0] tcf_action_exec.part.0 (./include/net/tc_wrapper.h:130 net/sched/act_api.c:1100) [ 60.758686][ C0] fl_classify (net/sched/cls_flower.c:345) cls_flower [ 60.759001][ C0] ? __pfx_fl_classify (net/sched/cls_flower.c:316) cls_flower [ 60.759331][ C0] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) [ 60.759603][ C0] ? __bfs (kernel/locking/lockdep.c:1787) [ 60.759844][ C0] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) [ 60.760130][ C0] ? 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) [ 60.760365][ C0] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 60.760668][ C0] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 60.760934][ C0] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) [ 60.761234][ C0] ? 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) [ 60.761484][ C0] ? check_prev_add (kernel/locking/lockdep.c:3172) [ 60.761753][ C0] __tcf_classify (./include/net/tc_wrapper.h:197 net/sched/cls_api.c:1734) [ 60.761999][ C0] tcf_classify (net/sched/cls_api.c:1830) [ 60.762250][ C0] ? __pfx_tcf_classify (net/sched/cls_api.c:1779) [ 60.762510][ C0] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4251) [ 60.762791][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 60.763060][ C0] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4251) [ 60.763350][ C0] tc_run (net/core/dev.c:3912) [ 60.763557][ C0] ? __pfx_tc_run (net/core/dev.c:3896) [ 60.763831][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 60.764106][ C0] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4251) [ 60.764392][ C0] __dev_queue_xmit (net/core/dev.c:4036 net/core/dev.c:4268) [ 60.764650][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 60.764899][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) [ 60.765257][ C0] ? __pfx___dev_queue_xmit (net/core/dev.c:4235) [ 60.765533][ C0] ? neigh_hh_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:772 ./include/net/neighbour.h:496) [ 60.765817][ C0] ip_finish_output2 (./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) [ 60.766084][ C0] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) [ 60.766380][ C0] ? __ip_finish_output (./include/linux/skbuff.h:1619 ./include/linux/skbuff.h:4884 net/ipv4/ip_output.c:307 net/ipv4/ip_output.c:295) [ 60.766650][ C0] ip_output (./include/linux/netfilter.h:303 net/ipv4/ip_output.c:433) [ 60.766873][ C0] ? __pfx_ip_output (net/ipv4/ip_output.c:427) [ 60.767141][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 60.767433][ C0] ? ip_local_out (./include/linux/skbuff.h:1131 ./include/net/dst.h:450 net/ipv4/ip_output.c:129) [ 60.767690][ C0] __ip_queue_xmit (net/ipv4/ip_output.c:535 (discriminator 4)) [ 60.767967][ C0] ? __create_object (mm/kmemleak.c:756) [ 60.768240][ C0] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) [ 60.768514][ C0] ? __pfx___tcp_transmit_skb (net/ipv4/tcp_output.c:1283) [ 60.768824][ C0] ? __tcp_send_ack.part.0 (./include/linux/skbuff.h:1296 net/ipv4/tcp_output.c:4206) [ 60.769101][ C0] tcp_rcv_state_process (net/ipv4/tcp_input.c:6874) [ 60.769391][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 60.769635][ C0] ? 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) [ 60.769871][ C0] ? __lock_acquired (kernel/locking/lockdep.c:339 kernel/locking/lockdep.c:5991) [ 60.770145][ C0] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6620) [ 60.770442][ C0] ? __pfx___lock_acquired (kernel/locking/lockdep.c:5959) [ 60.770742][ C0] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) [ 60.771035][ C0] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1929) [ 60.771296][ C0] tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2329) [ 60.771533][ C0] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2162) [ 60.771808][ C0] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) [ 60.772081][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 60.772388][ C0] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) [ 60.772684][ C0] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 60.772966][ C0] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 60.773238][ C0] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 60.773513][ C0] ? tcp_v4_early_demux (./include/linux/skbuff.h:1163 net/ipv4/tcp_ipv4.c:1988) [ 60.773796][ C0] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1131 ./include/linux/skbuff.h:1183 net/ipv4/ip_input.c:390) [ 60.774133][ C0] ip_rcv (./include/net/dst.h:460 net/ipv4/ip_input.c:449 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:569) [ 60.774357][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 60.774593][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 60.774861][ C0] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5950) [ 60.775134][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 60.775371][ C0] __netif_receive_skb_one_core (net/core/dev.c:5509 (discriminator 4)) [ 60.775695][ C0] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5502) [ 60.776057][ C0] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) [ 60.776364][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 60.776624][ C0] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5950) [ 60.776886][ C0] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5952) [ 60.777148][ C0] __napi_poll.constprop.0 (net/core/dev.c:6551) [ 60.777428][ C0] net_rx_action (net/core/dev.c:6620 net/core/dev.c:6753) [ 60.777680][ C0] ? __pfx_net_rx_action (net/core/dev.c:6717) [ 60.777947][ C0] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 60.778250][ C0] ? ktime_get (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:848 (discriminator 4)) [ 60.778479][ C0] ? hrtimer_interrupt (kernel/time/hrtimer.c:1827) [ 60.778760][ C0] ? hrtimer_interrupt (kernel/time/hrtimer.c:1827) [ 60.779025][ C0] __do_softirq (kernel/softirq.c:553) [ 60.779280][ C0] ? tcp_recvmsg (net/ipv4/tcp.c:2580) [ 60.779514][ C0] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) [ 60.779751][ C0] [ 60.779928][ C0] [ 60.780096][ C0] __local_bh_enable_ip (kernel/softirq.c:381) [ 60.780379][ C0] tcp_recvmsg (net/ipv4/tcp.c:2580) [ 60.780621][ C0] ? __pfx_tcp_recvmsg (net/ipv4/tcp.c:2564) [ 60.780876][ C0] ? core_sys_select (./arch/x86/include/asm/smap.h:33 ./arch/x86/include/asm/uaccess_64.h:120 ./arch/x86/include/asm/uaccess_64.h:133 ./include/linux/uaccess.h:138 fs/select.c:404 fs/select.c:401 fs/select.c:693) [ 60.781150][ C0] ? __pfx_core_sys_select (fs/select.c:627) [ 60.781441][ C0] inet_recvmsg (net/ipv4/af_inet.c:884 (discriminator 8)) [ 60.781694][ C0] ? __pfx_inet_recvmsg (net/ipv4/af_inet.c:874) [ 60.781955][ C0] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 60.782210][ C0] ? sockfd_lookup_light (net/socket.c:558) [ 60.782491][ C0] __sys_recvfrom (net/socket.c:1046 net/socket.c:1068 net/socket.c:2242) [ 60.782751][ C0] ? __pfx___sys_recvfrom (net/socket.c:2223) [ 60.783026][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 60.783322][ C0] ? do_pselect.constprop.0 (fs/select.c:764) [ 60.783629][ C0] ? __pfx_do_pselect.constprop.0 (fs/select.c:732) [ 60.783960][ C0] ? restore_fpregs_from_fpstate (arch/x86/kernel/fpu/xstate.h:202 arch/x86/kernel/fpu/core.c:181) [ 60.784294][ C0] ? __pfx_restore_fpregs_from_fpstate (arch/x86/kernel/fpu/core.c:137) [ 60.784621][ C0] __x64_sys_recvfrom (net/socket.c:2256) [ 60.784879][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 60.785233][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 60.785470][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 60.785797][ C0] RIP: 0033:0x7fa04d2304c0 [ 60.786031][ C0] Code: 84 00 00 00 00 00 0f 1f 40 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 1d 45 31 c9 45 31 c0 b8 2d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 68 c3 0f 1f 80 00 00 00 00 41 54 48 83 ec 20 All code ======== 0: 84 00 test %al,(%rax) 2: 00 00 add %al,(%rax) 4: 00 00 add %al,(%rax) 6: 0f 1f 40 00 nopl 0x0(%rax) a: f3 0f 1e fa endbr64 e: 41 89 ca mov %ecx,%r10d 11: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 18: 00 19: 85 c0 test %eax,%eax 1b: 75 1d jne 0x3a 1d: 45 31 c9 xor %r9d,%r9d 20: 45 31 c0 xor %r8d,%r8d 23: b8 2d 00 00 00 mov $0x2d,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 68 ja 0x9a 32: c3 ret 33: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 3a: 41 54 push %r12 3c: 48 83 ec 20 sub $0x20,%rsp Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 68 ja 0x70 8: c3 ret 9: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 10: 41 54 push %r12 12: 48 83 ec 20 sub $0x20,%rsp [ 60.787049][ C0] RSP: 002b:00007fffea051048 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 60.787481][ C0] RAX: ffffffffffffffda RBX: 000055d620c43a20 RCX: 00007fa04d2304c0 [ 60.787935][ C0] RDX: 0000000000002000 RSI: 00007fffea0510d0 RDI: 0000000000000008 [ 60.788339][ C0] RBP: 00007fffea0510d0 R08: 0000000000000000 R09: 0000000000000000 [ 60.788778][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 [ 60.789184][ C0] R13: 000055d620c43a20 R14: 0000000000000000 R15: 00007fffea0510cc | [ 60.788778][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 | [ 60.789184][ C0] R13: 000055d620c43a20 R14: 0000000000000000 R15: 00007fffea0510cc | [ 60.789615][ C0] | [ 66.136623][ C1] irq 4: nobody cared (try booting with the "irqpoll" option) [ 66.137438][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 66.138093][ C1] Call Trace: [ 66.138275][ C1] [ 66.138432][ C1] dump_stack_lvl (lib/dump_stack.c:107) [ 66.138685][ C1] __report_bad_irq (kernel/irq/spurious.c:214) [ 66.138948][ C1] note_interrupt (kernel/irq/spurious.c:423) [ 66.139205][ C1] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) [ 66.139472][ C1] handle_edge_irq (kernel/irq/chip.c:833) [ 66.139732][ C1] __common_interrupt (./include/linux/irqdesc.h:161 arch/x86/kernel/irq.c:238 arch/x86/kernel/irq.c:257) [ 66.140005][ C1] common_interrupt (arch/x86/kernel/irq.c:247 (discriminator 14)) [ 66.140266][ C1] [ 66.140427][ C1] [ 66.140589][ C1] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:640) [ 66.140864][ C1] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) [ 66.141259][ C1] Code: 10 e8 a1 28 a6 fd 48 89 ef e8 b9 b0 a6 fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d 35 a5 77 6a <74> 0e 5b 5d c3 cc cc cc cc e8 3f 71 c8 fd eb dc 0f 1f 44 00 00 5b All code ======== 0: 10 e8 adc %ch,%al 2: a1 28 a6 fd 48 89 ef movabs 0xb9e8ef8948fda628,%eax 9: e8 b9 b: b0 a6 mov $0xa6,%al d: fd std e: 81 e3 00 02 00 00 and $0x200,%ebx 14: 75 1d jne 0x33 16: 9c pushf 17: 58 pop %rax 18: f6 c4 02 test $0x2,%ah 1b: 75 29 jne 0x46 1d: 48 85 db test %rbx,%rbx 20: 74 01 je 0x23 22: fb sti 23: 65 ff 0d 35 a5 77 6a decl %gs:0x6a77a535(%rip) # 0x6a77a55f 2a:* 74 0e je 0x3a <-- trapping instruction 2c: 5b pop %rbx 2d: 5d pop %rbp 2e: c3 ret 2f: cc int3 30: cc int3 31: cc int3 32: cc int3 33: e8 3f 71 c8 fd call 0xfffffffffdc87177 38: eb dc jmp 0x16 3a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 3f: 5b pop %rbx Code starting with the faulting instruction =========================================== 0: 74 0e je 0x10 2: 5b pop %rbx 3: 5d pop %rbp 4: c3 ret 5: cc int3 6: cc int3 7: cc int3 8: cc int3 9: e8 3f 71 c8 fd call 0xfffffffffdc8714d e: eb dc jmp 0xffffffffffffffec 10: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 15: 5b pop %rbx [ 66.142299][ C1] RSP: 0018:ffffc90000b3fa88 EFLAGS: 00000286 [ 66.142630][ C1] RAX: 0000000000000046 RBX: 0000000000000200 RCX: 1ffffffff2edc443 [ 66.143057][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff95a811a1 [ 66.143483][ C1] RBP: ffffffff99827860 R08: 0000000000000000 R09: fffffbfff2edc1fa [ 66.143909][ C1] R10: ffffffff976e0fd7 R11: 0000000000000000 R12: 00000000000009ee [ 66.144340][ C1] R13: ffffffff99827970 R14: ffffffff99827860 R15: ffff888005780000 [ 66.144762][ C1] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 66.145085][ C1] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:616) [ 66.145366][ C1] process_output_block (drivers/tty/n_tty.c:574) [ 66.145646][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) [ 66.145966][ C1] n_tty_write (drivers/tty/n_tty.c:2380) [ 66.146207][ C1] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2350) [ 66.146471][ C1] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) [ 66.146771][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 66.147023][ C1] ? iterate_tty_write (drivers/tty/tty_io.c:954 drivers/tty/tty_io.c:973) [ 66.147292][ C1] iterate_tty_write (drivers/tty/tty_io.c:1021) [ 66.147557][ C1] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1096) [ 66.147859][ C1] vfs_write (./include/linux/fs.h:2085 fs/read_write.c:497 fs/read_write.c:590) [ 66.148093][ C1] ? __run_hrtimer (kernel/time/hrtimer.c:1705) [ 66.148345][ C1] ? __pfx_vfs_write (fs/read_write.c:571) [ 66.148601][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 66.148852][ C1] ? clockevents_program_event (kernel/time/clockevents.c:326) [ 66.149157][ C1] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 66.149437][ C1] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 66.149684][ C1] ksys_write (fs/read_write.c:643) [ 66.149913][ C1] ? __pfx_ksys_write (fs/read_write.c:633) [ 66.150174][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) [ 66.150492][ C1] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 66.150738][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 66.151056][ C1] RIP: 0033:0x7faf8bf97957 [ 66.151297][ C1] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24 All code ======== 0: 0b 00 or (%rax),%eax 2: f7 d8 neg %eax 4: 64 89 02 mov %eax,%fs:(%rdx) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b7 jmp 0xffffffffffffffc7 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 01 00 00 00 mov $0x1,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 48 89 54 24 18 mov %rdx,0x18(%rsp) 3c: 48 rex.W 3d: 89 .byte 0x89 3e: 74 24 je 0x64 Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 48 89 54 24 18 mov %rdx,0x18(%rsp) 12: 48 rex.W 13: 89 .byte 0x89 14: 74 24 je 0x3a [ 66.152333][ C1] RSP: 002b:00007ffd3c197308 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 66.152783][ C1] RAX: ffffffffffffffda RBX: 000055b640b6bfb0 RCX: 00007faf8bf97957 [ 66.153220][ C1] RDX: 0000000000000001 RSI: 000055b640b6bfb0 RDI: 0000000000000001 [ 66.153649][ C1] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 66.154130][ C1] R10: 0000000000000001 R11: 0000000000000246 R12: 000055b640b58530 Finger prints: dump_stack_lvl:validate_chain:__lock_acquire:_raw_spin_lock_nested dump_stack_lvl:__report_bad_irq:note_interrupt:handle_irq_event