====================================== | [ 1880.771666][ C1] #6: ffffffffa5b447e0 (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)) | [ 1880.772248][ C1] #7: ffffffffa5b447e0 (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) | [ 1880.772819][ C1] | [ 1880.772819][ C1] stack backtrace: [ 1880.773580][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1880.774236][ C1] Call Trace: [ 1880.774426][ C1] [ 1880.774584][ C1] dump_stack_lvl (lib/dump_stack.c:107) [ 1880.774837][ C1] validate_chain (kernel/locking/lockdep.c:3859) [ 1880.775088][ C1] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 1880.775374][ 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) [ 1880.775610][ C1] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1880.775844][ C1] __lock_acquire (kernel/locking/lockdep.c:5137) [ 1880.776106][ C1] ? lock_downgrade (kernel/locking/lockdep.c:5656) [ 1880.776360][ C1] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1880.776620][ C1] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 1880.776888][ C1] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) [ 1880.777165][ C1] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1880.777489][ C1] ? __pfx_sk_filter_trim_cap (net/core/filter.c:130) [ 1880.777815][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1880.778079][ C1] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) [ 1880.778360][ C1] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) [ 1880.778652][ C1] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) [ 1880.778913][ C1] tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) [ 1880.779183][ C1] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2163) [ 1880.779469][ C1] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) [ 1880.779739][ C1] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1880.780054][ C1] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) [ 1880.780342][ C1] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 1880.780650][ C1] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 1880.780906][ C1] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 1880.781220][ C1] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1136 ./include/linux/skbuff.h:1188 net/ipv4/ip_input.c:390) [ 1880.781568][ C1] 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) [ 1880.781800][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 1880.782057][ C1] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 1880.782359][ 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)) [ 1880.782669][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 1880.782920][ C1] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) [ 1880.783246][ C1] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5535) [ 1880.783609][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1880.783873][ 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)) [ 1880.784210][ C1] netif_receive_skb_internal (net/core/dev.c:5742) [ 1880.784525][ C1] ? __pfx_netif_receive_skb_internal (net/core/dev.c:5721) [ 1880.784868][ C1] ? __copy_skb_header (./include/net/dst.h:290 net/core/skbuff.c:1426) [ 1880.785136][ 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:1497 (discriminator 4)) [ 1880.785397][ C1] netif_receive_skb (net/core/dev.c:5801) [ 1880.785674][ C1] tcf_mirred_to_dev (net/sched/act_mirred.c:249 net/sched/act_mirred.c:324) act_mirred [ 1880.786037][ C1] ? __pfx_tcf_skbedit_act (net/sched/act_skbedit.c:43) act_skbedit [ 1880.786397][ C1] tcf_mirred_act (net/sched/act_mirred.c:459 (discriminator 2)) act_mirred [ 1880.786757][ C1] tcf_action_exec.part.0 (./include/net/tc_wrapper.h:130 net/sched/act_api.c:1100) [ 1880.787043][ C1] fl_classify (net/sched/cls_flower.c:345) cls_flower [ 1880.787347][ C1] ? __pfx_fl_classify (net/sched/cls_flower.c:316) cls_flower [ 1880.787698][ 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) [ 1880.787953][ 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) [ 1880.788215][ C1] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 1880.788482][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 1880.788772][ 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) [ 1880.789007][ C1] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 1880.789274][ 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) [ 1880.789514][ C1] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 1880.789803][ C1] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 1880.790095][ 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) [ 1880.790351][ C1] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1880.790582][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 1880.790861][ C1] __tcf_classify (./include/net/tc_wrapper.h:197 net/sched/cls_api.c:1734) [ 1880.791113][ C1] tcf_classify (net/sched/cls_api.c:1830) [ 1880.791368][ 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) [ 1880.791609][ C1] ? __pfx_tcf_classify (net/sched/cls_api.c:1779) [ 1880.791876][ C1] ? trace_rcu_dyntick (./include/trace/events/rcu.h:480 (discriminator 44)) [ 1880.792161][ C1] tc_run (net/core/dev.c:3945) [ 1880.792390][ C1] ? __pfx_tc_run (net/core/dev.c:3929) [ 1880.792656][ C1] __dev_queue_xmit (net/core/dev.c:4069 net/core/dev.c:4301) [ 1880.792952][ C1] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 1880.793204][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 1880.793468][ C1] ? __pfx___dev_queue_xmit (net/core/dev.c:4268) [ 1880.793782][ C1] ? neigh_hh_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:772 ./include/net/neighbour.h:496) [ 1880.794042][ C1] ? vrf_ip_local_out (./include/net/dst.h:450 ./include/net/dst.h:448 drivers/net/vrf.c:522) vrf [ 1880.794355][ C1] ip_finish_output2 (./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) [ 1880.794643][ C1] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) [ 1880.794952][ C1] ? __ip_finish_output (net/ipv4/ip_output.c:256 net/ipv4/ip_output.c:308 net/ipv4/ip_output.c:295) [ 1880.795238][ C1] ip_output (./include/linux/netfilter.h:303 net/ipv4/ip_output.c:433) [ 1880.795482][ C1] ? __pfx_ip_output (net/ipv4/ip_output.c:427) [ 1880.795746][ C1] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1880.796060][ C1] ? ip_local_out (./include/linux/skbuff.h:1136 ./include/net/dst.h:450 net/ipv4/ip_output.c:129) [ 1880.796334][ C1] __ip_queue_xmit (net/ipv4/ip_output.c:535 (discriminator 4)) [ 1880.796621][ C1] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) [ 1880.796924][ C1] ? __pfx___tcp_transmit_skb (net/ipv4/tcp_output.c:1283) [ 1880.797251][ 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) [ 1880.797593][ C1] tcp_write_xmit (net/ipv4/tcp_output.c:2792) [ 1880.797852][ C1] ? ipv4_mtu (./include/net/net_namespace.h:383 ./include/linux/netdevice.h:2651 ./include/net/ip.h:465 net/ipv4/route.c:1326) [ 1880.798088][ C1] ? __pfx_tcp_write_xmit (net/ipv4/tcp_output.c:2702) [ 1880.798382][ C1] ? __pfx_tcp_current_mss (net/ipv4/tcp_output.c:1853) [ 1880.798692][ C1] ? ktime_get (./include/linux/seqlock.h:74 kernel/time/timekeeping.c:846) [ 1880.798941][ C1] __tcp_push_pending_frames (net/ipv4/tcp_output.c:2977) [ 1880.799247][ C1] tcp_rcv_state_process (net/ipv4/tcp_input.c:5654 net/ipv4/tcp_input.c:6881) [ 1880.799534][ C1] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6621) [ 1880.799852][ C1] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 1880.800105][ C1] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) [ 1880.800415][ 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) [ 1880.800670][ C1] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1930) [ 1880.800940][ C1] ? __pfx_tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1887) [ 1880.801223][ C1] tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2330) [ 1880.801490][ C1] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2163) [ 1880.801783][ C1] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) [ 1880.802066][ C1] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1880.802377][ C1] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) [ 1880.802657][ C1] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 1880.802958][ C1] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 1880.803218][ C1] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 1880.803517][ C1] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1136 ./include/linux/skbuff.h:1188 net/ipv4/ip_input.c:390) [ 1880.803851][ C1] 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) [ 1880.804087][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 1880.804346][ C1] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 1880.804658][ C1] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5983) [ 1880.804931][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 1880.805202][ C1] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) [ 1880.805522][ C1] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5535) [ 1880.805894][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1880.806141][ C1] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5983) [ 1880.806429][ C1] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5985) [ 1880.806712][ C1] __napi_poll.constprop.0 (net/core/dev.c:6585) [ 1880.806998][ C1] net_rx_action (net/core/dev.c:6653 net/core/dev.c:6786) [ 1880.807261][ C1] ? __pfx_net_rx_action (net/core/dev.c:6750) [ 1880.807531][ 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) [ 1880.807784][ C1] irq_exit_rcu (kernel/softirq.c:427 kernel/softirq.c:632 kernel/softirq.c:644) [ 1880.808016][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) [ 1880.808349][ C1] [ 1880.808504][ C1] [ 1880.808691][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) [ 1880.809023][ 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) [ 1880.809302][ 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 73 82 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 73 82 41 00 verw 0x418273(%rip) # 0x41829b 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 [ 1880.810315][ C1] RSP: 0018:ffffc9000013fdf8 EFLAGS: 00000202 [ 1880.810654][ C1] RAX: 000000000159de97 RBX: 1ffff92000027fc1 RCX: ffffffffa4848942 [ 1880.811070][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa22968b6 [ 1880.811505][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006afeea4 [ 1880.811922][ C1] R10: ffff8880357f7523 R11: ffff8880357fc348 R12: 0000000000000000 [ 1880.812336][ C1] R13: ffff888001d0bec0 R14: dffffc0000000000 R15: 0000000000000000 [ 1880.812770][ C1] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:147) [ 1880.813086][ C1] ? cpuidle_idle_call (kernel/sched/idle.c:171) [ 1880.813390][ C1] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:98) [ 1880.813653][ C1] cpuidle_idle_call (kernel/sched/idle.c:171) [ 1880.813924][ C1] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:147) [ 1880.814249][ C1] do_idle (kernel/sched/idle.c:312) [ 1880.814483][ C1] cpu_startup_entry (kernel/sched/idle.c:409 (discriminator 1)) [ 1880.814732][ C1] start_secondary (arch/x86/kernel/smpboot.c:224 arch/x86/kernel/smpboot.c:304) [ 1880.815005][ C1] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:254) [ 1880.815280][ C1] secondary_startup_64_no_verify (arch/x86/kernel/head_64.S:461) | [ 1880.815005][ C1] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:254) | [ 1880.815280][ C1] secondary_startup_64_no_verify (arch/x86/kernel/head_64.S:461) | [ 1880.815615][ C1] | [ 1907.326865][ C1] irq 4: nobody cared (try booting with the "irqpoll" option) [ 1907.327675][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1907.328305][ C1] Call Trace: [ 1907.328495][ C1] [ 1907.328650][ C1] dump_stack_lvl (lib/dump_stack.c:107) [ 1907.328899][ C1] __report_bad_irq (kernel/irq/spurious.c:214) [ 1907.329156][ C1] note_interrupt (kernel/irq/spurious.c:423) [ 1907.329403][ C1] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) [ 1907.329661][ C1] handle_edge_irq (kernel/irq/chip.c:833) [ 1907.329914][ C1] __common_interrupt (arch/x86/kernel/irq.c:271 (discriminator 22)) [ 1907.330178][ C1] common_interrupt (arch/x86/kernel/irq.c:247 (discriminator 14)) [ 1907.330423][ C1] [ 1907.330576][ C1] [ 1907.330730][ C1] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:640) [ 1907.330997][ C1] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) [ 1907.331332][ C1] Code: 10 e8 71 8a a6 fd 48 89 ef e8 89 12 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 05 07 98 5b <74> 0e 5b 5d c3 cc cc cc cc e8 7f 1a c9 fd eb dc 0f 1f 44 00 00 5b All code ======== 0: 10 e8 adc %ch,%al 2: 71 8a jno 0xffffffffffffff8e 4: a6 cmpsb %es:(%rdi),%ds:(%rsi) 5: fd std 6: 48 89 ef mov %rbp,%rdi 9: e8 89 12 a7 fd call 0xfffffffffda71297 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 05 07 98 5b decl %gs:0x5b980705(%rip) # 0x5b98072f 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 7f 1a c9 fd call 0xfffffffffdc91ab7 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 7f 1a c9 fd call 0xfffffffffdc91a8d e: eb dc jmp 0xffffffffffffffec 10: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 15: 5b pop %rbx [ 1907.332331][ C1] RSP: 0018:ffffc9000941fa88 EFLAGS: 00000286 [ 1907.332649][ C1] RAX: 0000000000000046 RBX: 0000000000000200 RCX: 1ffffffff4c9c29b [ 1907.333058][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffffa487afd1 [ 1907.333466][ C1] RBP: ffffffffa86259a0 R08: 0000000000000000 R09: fffffbfff4c9c052 [ 1907.333876][ C1] R10: ffffffffa64e0297 R11: 0000000000000000 R12: 00000000000008d7 [ 1907.334299][ C1] R13: ffffffffa8625ab0 R14: ffffffffa86259a0 R15: ffff888004f70000 [ 1907.334716][ C1] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 1907.335026][ C1] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:616) [ 1907.335257][ C1] process_output_block (drivers/tty/n_tty.c:574) [ 1907.335532][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) [ 1907.335847][ C1] n_tty_write (drivers/tty/n_tty.c:2380) [ 1907.336087][ C1] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2350) [ 1907.336346][ C1] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) [ 1907.336646][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1907.336894][ C1] ? iterate_tty_write (drivers/tty/tty_io.c:954 drivers/tty/tty_io.c:973) [ 1907.337161][ C1] iterate_tty_write (drivers/tty/tty_io.c:1022) [ 1907.337423][ C1] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1096) [ 1907.337723][ C1] vfs_write (fs/read_write.c:498 fs/read_write.c:590) [ 1907.337955][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 1907.338202][ C1] ? __might_fault (mm/memory.c:6060 mm/memory.c:6053) [ 1907.338454][ C1] ? __pfx_vfs_write (fs/read_write.c:571) [ 1907.338706][ C1] ? __might_fault (mm/memory.c:6060 mm/memory.c:6053) [ 1907.338951][ C1] ? lock_release (./include/trace/events/lock.h:69 kernel/locking/lockdep.c:5765) [ 1907.339196][ C1] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 1907.339469][ C1] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 1907.339718][ C1] ksys_write (fs/read_write.c:643) [ 1907.339941][ C1] ? __pfx_ksys_write (fs/read_write.c:633) [ 1907.340194][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) [ 1907.340511][ C1] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 1907.340755][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 1907.341069][ C1] RIP: 0033:0x7ffac3f87957 [ 1907.341305][ 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 [ 1907.342303][ C1] RSP: 002b:00007fff5370da58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1907.342737][ C1] RAX: ffffffffffffffda RBX: 0000564435073ea0 RCX: 00007ffac3f87957 [ 1907.343155][ C1] RDX: 0000000000000001 RSI: 0000564435073ea0 RDI: 0000000000000001 [ 1907.343571][ C1] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 1907.343993][ C1] R10: 0000000000000001 R11: 0000000000000246 R12: 0000564435060510 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