====================================== | [ 1992.495129][ C1] #6: ffffffffa63447e0 (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:5729 (discriminator 16)) | [ 1992.495670][ C1] #7: ffffffffa63447e0 (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) | [ 1992.496225][ C1] | [ 1992.496225][ C1] stack backtrace: [ 1992.496953][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1992.497586][ C1] Call Trace: [ 1992.497766][ C1] [ 1992.497944][ C1] dump_stack_lvl (lib/dump_stack.c:107) [ 1992.498183][ C1] validate_chain (kernel/locking/lockdep.c:3859) [ 1992.498433][ C1] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 1992.498723][ C1] ? 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) [ 1992.498964][ C1] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1992.499226][ C1] __lock_acquire (kernel/locking/lockdep.c:5137) [ 1992.499480][ C1] ? lock_downgrade (kernel/locking/lockdep.c:5656) [ 1992.499753][ C1] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1992.499985][ C1] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 1992.500271][ C1] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 1992.500523][ C1] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1992.500836][ C1] ? __pfx_sk_filter_trim_cap (net/core/filter.c:130) [ 1992.501141][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1992.501384][ C1] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 1992.501648][ C1] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) [ 1992.501930][ C1] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 1992.502197][ C1] tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 1992.502445][ C1] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2162) [ 1992.502712][ C1] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) [ 1992.502994][ C1] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1992.503295][ C1] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) [ 1992.503598][ C1] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 1992.503901][ C1] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 1992.504176][ C1] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 1992.504461][ C1] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1131 ./include/linux/skbuff.h:1183 net/ipv4/ip_input.c:390) [ 1992.504807][ C1] ip_rcv (./include/net/dst.h:461 net/ipv4/ip_input.c:449 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:569) [ 1992.505033][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 1992.505272][ C1] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 1992.505546][ C1] ? netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5729 (discriminator 16)) [ 1992.505872][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 1992.506134][ C1] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) [ 1992.506451][ C1] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5535) [ 1992.506802][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1992.507066][ C1] ? netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5729 (discriminator 16)) [ 1992.507374][ C1] netif_receive_skb_internal (net/core/dev.c:5742) [ 1992.507669][ C1] ? __pfx_netif_receive_skb_internal (net/core/dev.c:5721) [ 1992.508014][ C1] ? __copy_skb_header (./include/net/dst.h:290 net/core/skbuff.c:1420) [ 1992.508301][ C1] ? __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)) [ 1992.508547][ C1] netif_receive_skb (net/core/dev.c:5801) [ 1992.508814][ C1] tcf_mirred_to_dev (net/sched/act_mirred.c:249 net/sched/act_mirred.c:324) act_mirred [ 1992.509155][ C1] ? __pfx_tcf_skbedit_act (net/sched/act_skbedit.c:43) act_skbedit [ 1992.509503][ C1] tcf_mirred_act (net/sched/act_mirred.c:459 (discriminator 2)) act_mirred [ 1992.509825][ C1] tcf_action_exec.part.0 (./include/net/tc_wrapper.h:130 net/sched/act_api.c:1100) [ 1992.510131][ C1] fl_classify (net/sched/cls_flower.c:345) cls_flower [ 1992.510463][ C1] ? __pfx_fl_classify (net/sched/cls_flower.c:316) cls_flower [ 1992.510808][ C1] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 1992.511074][ C1] ? check_irq_usage (kernel/locking/lockdep.c:2823) [ 1992.511356][ C1] ? 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) [ 1992.511598][ C1] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) [ 1992.511900][ C1] ? __bfs (kernel/locking/lockdep.c:1787) [ 1992.512113][ C1] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) [ 1992.512393][ C1] ? 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) [ 1992.512655][ C1] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 1992.512943][ C1] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 1992.513233][ C1] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) [ 1992.513516][ C1] ? 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) [ 1992.513773][ C1] ? 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) [ 1992.514039][ C1] __tcf_classify (./include/net/tc_wrapper.h:197 net/sched/cls_api.c:1734) [ 1992.514304][ C1] tcf_classify (net/sched/cls_api.c:1830) [ 1992.514548][ C1] ? __pfx_tcf_classify (net/sched/cls_api.c:1779) [ 1992.514827][ C1] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 1992.515117][ C1] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4284) [ 1992.515390][ C1] tc_run (net/core/dev.c:3945) [ 1992.515615][ C1] ? __pfx_tc_run (net/core/dev.c:3929) [ 1992.515871][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1992.516132][ C1] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4284) [ 1992.516400][ C1] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4284) [ 1992.516686][ C1] __dev_queue_xmit (net/core/dev.c:4069 net/core/dev.c:4301) [ 1992.516964][ C1] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1992.517212][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 1992.517472][ C1] ? __pfx___dev_queue_xmit (net/core/dev.c:4268) [ 1992.517770][ C1] ? neigh_hh_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:772 ./include/net/neighbour.h:496) [ 1992.518046][ C1] ip_finish_output2 (./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) [ 1992.518332][ C1] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) [ 1992.518623][ C1] ? __ip_finish_output (net/ipv4/ip_output.c:256 net/ipv4/ip_output.c:308 net/ipv4/ip_output.c:295) [ 1992.518908][ C1] ip_output (./include/linux/netfilter.h:303 net/ipv4/ip_output.c:433) [ 1992.519153][ C1] ? 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) [ 1992.519389][ C1] ? __pfx_ip_output (net/ipv4/ip_output.c:427) [ 1992.519652][ C1] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1992.519966][ C1] ? ip_local_out (./include/linux/skbuff.h:1131 ./include/net/dst.h:451 net/ipv4/ip_output.c:129) [ 1992.520230][ C1] __ip_queue_xmit (net/ipv4/ip_output.c:535 (discriminator 4)) [ 1992.520488][ C1] ? __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)) [ 1992.520746][ C1] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) [ 1992.521039][ C1] ? __pfx___tcp_transmit_skb (net/ipv4/tcp_output.c:1283) [ 1992.521357][ C1] ? tcp_small_queue_check.isra.0 (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/linux/refcount.h:136 net/ipv4/tcp_output.c:2623) [ 1992.521673][ C1] tcp_write_xmit (net/ipv4/tcp_output.c:2792) [ 1992.521939][ C1] ? ipv4_mtu (./include/net/net_namespace.h:385 ./include/linux/netdevice.h:2651 ./include/net/ip.h:465 net/ipv4/route.c:1326) [ 1992.522186][ C1] ? __pfx_tcp_write_xmit (net/ipv4/tcp_output.c:2702) [ 1992.522460][ C1] ? __pfx_tcp_current_mss (net/ipv4/tcp_output.c:1853) [ 1992.522757][ C1] __tcp_push_pending_frames (net/ipv4/tcp_output.c:2977) [ 1992.523067][ C1] tcp_rcv_state_process (net/ipv4/tcp_input.c:5654 net/ipv4/tcp_input.c:6870) [ 1992.523367][ C1] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 1992.523634][ C1] ? 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) [ 1992.523894][ C1] ? __lock_acquired (kernel/locking/lockdep.c:339 kernel/locking/lockdep.c:5991) [ 1992.524176][ C1] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6620) [ 1992.524480][ C1] ? __pfx___lock_acquired (kernel/locking/lockdep.c:5959) [ 1992.524773][ C1] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) [ 1992.525087][ C1] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1929) [ 1992.525335][ C1] tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2329) [ 1992.525591][ C1] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2162) [ 1992.525862][ C1] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) [ 1992.526142][ C1] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1992.526436][ C1] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) [ 1992.526735][ C1] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 1992.527040][ C1] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 1992.527313][ C1] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 1992.527596][ C1] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1131 ./include/linux/skbuff.h:1183 net/ipv4/ip_input.c:390) [ 1992.527941][ C1] ip_rcv (./include/net/dst.h:461 net/ipv4/ip_input.c:449 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:569) [ 1992.528165][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 1992.528409][ C1] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 1992.528697][ C1] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5983) [ 1992.528978][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 1992.529254][ C1] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) [ 1992.529567][ C1] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5535) [ 1992.529919][ C1] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) [ 1992.530235][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1992.530483][ C1] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5983) [ 1992.530757][ C1] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5985) [ 1992.531025][ C1] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 1992.531316][ C1] __napi_poll.constprop.0 (net/core/dev.c:6585) [ 1992.531601][ C1] net_rx_action (net/core/dev.c:6653 net/core/dev.c:6786) [ 1992.531865][ C1] ? __pfx_net_rx_action (net/core/dev.c:6750) [ 1992.532150][ C1] __do_softirq (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/irq.h:142 kernel/softirq.c:554) [ 1992.532396][ C1] irq_exit_rcu (kernel/softirq.c:427 kernel/softirq.c:632 kernel/softirq.c:644) [ 1992.532638][ C1] common_interrupt (arch/x86/kernel/irq.c:247 (discriminator 14)) [ 1992.532904][ C1] [ 1992.533062][ C1] [ 1992.533237][ C1] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:640) [ 1992.533523][ C1] RIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:72 arch/x86/kernel/process.c:743) [ 1992.533809][ C1] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 53 c3 41 00 fb f4 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 All code ======== 0: 4c 01 c7 add %r8,%rdi 3: 4c 29 c2 sub %r8,%rdx 6: e9 72 ff ff ff jmp 0xffffffffffffff7d b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: f3 0f 1e fa endbr64 1f: eb 07 jmp 0x28 21: 0f 00 2d 53 c3 41 00 verw 0x41c353(%rip) # 0x41c37b 28: fb sti 29: f4 hlt 2a:* fa cli <-- trapping instruction 2b: c3 ret 2c: cc int3 2d: cc int3 2e: cc int3 2f: cc int3 30: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1) 37: 00 00 00 00 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop Code starting with the faulting instruction =========================================== 0: fa cli 1: c3 ret 2: cc int3 3: cc int3 4: cc int3 5: cc int3 6: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1) d: 00 00 00 00 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop [ 1992.534841][ C1] RSP: 0018:ffffc9000013fdf8 EFLAGS: 00000206 [ 1992.535167][ C1] RAX: 000000000243e555 RBX: 1ffff92000027fc1 RCX: ffffffffa5044862 [ 1992.535583][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa2a968b6 [ 1992.536015][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006afeea4 [ 1992.536435][ C1] R10: ffff8880357f7523 R11: ffff8880357fc348 R12: 0000000000000000 [ 1992.536855][ C1] R13: ffff888001d0bec0 R14: dffffc0000000000 R15: 0000000000000000 [ 1992.537293][ C1] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:147) [ 1992.537597][ C1] ? cpuidle_idle_call (kernel/sched/idle.c:171) [ 1992.537884][ C1] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:98) [ 1992.538151][ C1] cpuidle_idle_call (kernel/sched/idle.c:171) [ 1992.538414][ C1] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:147) [ 1992.538717][ C1] do_idle (kernel/sched/idle.c:312) [ 1992.538947][ C1] cpu_startup_entry (kernel/sched/idle.c:409 (discriminator 1)) [ 1992.539232][ C1] start_secondary (arch/x86/kernel/smpboot.c:224 arch/x86/kernel/smpboot.c:304) [ 1992.539489][ C1] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:254) [ 1992.539779][ C1] secondary_startup_64_no_verify (arch/x86/kernel/head_64.S:461) | [ 1992.539489][ C1] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:254) | [ 1992.539779][ C1] secondary_startup_64_no_verify (arch/x86/kernel/head_64.S:461) | [ 1992.540125][ C1] | [ 2006.454707][ C1] irq 4: nobody cared (try booting with the "irqpoll" option) [ 2006.455503][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 2006.456132][ C1] Call Trace: [ 2006.456307][ C1] [ 2006.456458][ C1] dump_stack_lvl (lib/dump_stack.c:107) [ 2006.456703][ C1] __report_bad_irq (kernel/irq/spurious.c:214) [ 2006.456959][ C1] note_interrupt (kernel/irq/spurious.c:423) [ 2006.457203][ C1] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) [ 2006.457460][ C1] handle_edge_irq (kernel/irq/chip.c:833) [ 2006.457713][ C1] __common_interrupt (arch/x86/kernel/irq.c:271 (discriminator 22)) [ 2006.457977][ C1] common_interrupt (arch/x86/kernel/irq.c:247 (discriminator 14)) [ 2006.458222][ C1] [ 2006.458376][ C1] [ 2006.458531][ C1] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:640) [ 2006.458795][ C1] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) [ 2006.459139][ C1] Code: 10 e8 51 cb a6 fd 48 89 ef e8 69 53 a7 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 e5 47 18 5b <74> 0e 5b 5d c3 cc cc cc cc e8 5f 5b c9 fd eb dc 0f 1f 44 00 00 5b All code ======== 0: 10 e8 adc %ch,%al 2: 51 push %rcx 3: cb lret 4: a6 cmpsb %es:(%rdi),%ds:(%rsi) 5: fd std 6: 48 89 ef mov %rbp,%rdi 9: e8 69 53 a7 fd call 0xfffffffffda75377 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 e5 47 18 5b decl %gs:0x5b1847e5(%rip) # 0x5b18480f 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 5f 5b c9 fd call 0xfffffffffdc95b97 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 5f 5b c9 fd call 0xfffffffffdc95b6d e: eb dc jmp 0xffffffffffffffec 10: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 15: 5b pop %rbx [ 2006.460144][ C1] RSP: 0018:ffffc9000112fa88 EFLAGS: 00000286 [ 2006.460463][ C1] RAX: 0000000000000046 RBX: 0000000000000200 RCX: 1ffffffff4d9c053 [ 2006.460883][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffffa5076ef1 [ 2006.461295][ C1] RBP: ffffffffa8e229a0 R08: 0000000000000000 R09: fffffbfff4d9be0a [ 2006.461708][ C1] R10: ffffffffa6cdf057 R11: 0000000000000000 R12: 00000000000003c7 [ 2006.462124][ C1] R13: ffffffffa8e22ab0 R14: ffffffffa8e229a0 R15: ffff888005590000 [ 2006.462544][ C1] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 2006.462851][ C1] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:616) [ 2006.463081][ C1] process_output_block (drivers/tty/n_tty.c:574) [ 2006.463356][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) [ 2006.463671][ C1] n_tty_write (drivers/tty/n_tty.c:2380) [ 2006.463910][ C1] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2350) [ 2006.464169][ C1] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) [ 2006.464467][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 2006.464715][ C1] ? iterate_tty_write (drivers/tty/tty_io.c:954 drivers/tty/tty_io.c:973) [ 2006.464979][ C1] iterate_tty_write (drivers/tty/tty_io.c:1022) [ 2006.465238][ C1] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1096) [ 2006.465541][ C1] vfs_write (fs/read_write.c:498 fs/read_write.c:590) [ 2006.465770][ C1] ? __run_timers.part.0 (kernel/time/timer.c:2007) [ 2006.466052][ C1] ? __pfx_mix_interrupt_randomness (drivers/char/random.c:1053) [ 2006.466368][ C1] ? __pfx_vfs_write (fs/read_write.c:571) [ 2006.466618][ C1] ? __pfx___run_timers.part.0 (kernel/time/timer.c:2007) [ 2006.466915][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 2006.467161][ C1] ? clockevents_program_event (kernel/time/clockevents.c:326) [ 2006.467461][ C1] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 2006.467734][ C1] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 2006.467977][ C1] ksys_write (fs/read_write.c:643) [ 2006.468201][ C1] ? __pfx_ksys_write (fs/read_write.c:633) [ 2006.468456][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) [ 2006.468769][ C1] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 2006.469011][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 2006.469333][ C1] RIP: 0033:0x7f2f4781d957 [ 2006.469565][ 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 [ 2006.470575][ C1] RSP: 002b:00007ffffabdceb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 2006.471015][ C1] RAX: ffffffffffffffda RBX: 000055abb090ffe0 RCX: 00007f2f4781d957 [ 2006.471425][ C1] RDX: 0000000000000001 RSI: 000055abb090ffe0 RDI: 0000000000000001 [ 2006.471835][ C1] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 2006.472246][ C1] R10: 0000000000000001 R11: 0000000000000246 R12: 000055abb08fc510 Finger prints: dump_stack_lvl:validate_chain:__lock_acquire:_raw_spin_lock_nested secondary_startup_64_no_verify:dump_stack_lvl:__report_bad_irq:note_interrupt