====================================== | [ 2267.035354][ C0] #6: ffffffffa53467e0 (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:5738 (discriminator 16)) | [ 2267.035928][ C0] #7: ffffffffa53467e0 (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) | [ 2267.036471][ C0] | [ 2267.036471][ C0] stack backtrace: [ 2267.037200][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 2267.037879][ C0] Call Trace: [ 2267.038055][ C0] [ 2267.038225][ C0] dump_stack_lvl (lib/dump_stack.c:107) [ 2267.038488][ C0] validate_chain (kernel/locking/lockdep.c:3859) [ 2267.038763][ C0] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 2267.039046][ 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) [ 2267.039304][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 2267.039545][ C0] __lock_acquire (kernel/locking/lockdep.c:5137) [ 2267.039822][ C0] ? lock_downgrade (kernel/locking/lockdep.c:5656) [ 2267.040097][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 2267.040347][ DETECTED CRASH, lowering timeout C0] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 2267.040633][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 2267.040881][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 2267.041190][ C0] ? __pfx_sk_filter_trim_cap (net/core/filter.c:130) [ 2267.041499][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 2267.041767][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 2267.042033][ C0] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) [ 2267.042345][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 2267.042606][ C0] tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 2267.042864][ C0] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2162) [ 2267.043130][ C0] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) [ 2267.043428][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 2267.043724][ C0] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) [ 2267.044009][ C0] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 2267.044309][ C0] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 2267.044586][ C0] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 2267.044898][ C0] ? tcp_v4_early_demux (./include/linux/skbuff.h:1163 net/ipv4/tcp_ipv4.c:1988) [ 2267.045178][ C0] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1131 ./include/linux/skbuff.h:1183 net/ipv4/ip_input.c:390) [ 2267.045509][ 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) [ 2267.045761][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 2267.046001][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 2267.046294][ C0] ? netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5738 (discriminator 16)) [ 2267.046623][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 2267.046886][ C0] __netif_receive_skb_one_core (net/core/dev.c:5551 (discriminator 4)) [ 2267.047238][ C0] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5544) [ 2267.047593][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 2267.047861][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 2267.048130][ C0] ? netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5738 (discriminator 16)) [ 2267.048444][ C0] netif_receive_skb_internal (net/core/dev.c:5751) [ 2267.048758][ C0] ? __pfx_netif_receive_skb_internal (net/core/dev.c:5730) [ 2267.049088][ C0] ? __copy_skb_header (./include/net/dst.h:290 net/core/skbuff.c:1513) [ 2267.049364][ 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:1584 (discriminator 4)) [ 2267.049613][ C0] netif_receive_skb (net/core/dev.c:5810) [ 2267.049880][ C0] tcf_mirred_to_dev (net/sched/act_mirred.c:249 net/sched/act_mirred.c:324) act_mirred [ 2267.050226][ C0] ? __pfx_tcf_skbedit_act (net/sched/act_skbedit.c:43) act_skbedit [ 2267.050587][ C0] tcf_mirred_act (net/sched/act_mirred.c:459 (discriminator 2)) act_mirred [ 2267.050900][ C0] tcf_action_exec.part.0 (./include/net/tc_wrapper.h:130 net/sched/act_api.c:1100) [ 2267.051195][ C0] fl_classify (net/sched/cls_flower.c:345) cls_flower [ 2267.051511][ C0] ? __pfx_fl_classify (net/sched/cls_flower.c:316) cls_flower [ 2267.051836][ C0] ? __pfx_check_irq_usage (kernel/locking/lockdep.c:2790) [ 2267.052120][ C0] ? __bfs (kernel/locking/lockdep.c:1787) [ 2267.052339][ C0] ? __pfx_hlock_conflict (kernel/locking/lockdep.c:2016) [ 2267.052638][ C0] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 2267.052925][ C0] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 2267.053198][ C0] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2163) [ 2267.053482][ C0] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 2267.053770][ 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) [ 2267.054011][ 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) [ 2267.054257][ C0] ? check_prev_add (kernel/locking/lockdep.c:3172) [ 2267.054524][ C0] __tcf_classify (./include/net/tc_wrapper.h:197 net/sched/cls_api.c:1734) [ 2267.054778][ C0] tcf_classify (net/sched/cls_api.c:1830) [ 2267.055055][ C0] ? __pfx_tcf_classify (net/sched/cls_api.c:1779) [ 2267.055324][ C0] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4259) [ 2267.055619][ C0] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4259) [ 2267.055899][ C0] tc_run (net/core/dev.c:3920) [ 2267.056119][ C0] ? __pfx_tc_run (net/core/dev.c:3904) [ 2267.056365][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 2267.056630][ C0] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4259) [ 2267.056922][ C0] __dev_queue_xmit (net/core/dev.c:4044 net/core/dev.c:4276) [ 2267.057181][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 2267.057432][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) [ 2267.057819][ C0] ? __pfx___dev_queue_xmit (net/core/dev.c:4243) [ 2267.058110][ C0] ? neigh_hh_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:772 ./include/net/neighbour.h:496) [ 2267.058384][ C0] ip_finish_output2 (./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) [ 2267.058671][ C0] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) [ 2267.058987][ C0] ? __ip_finish_output (net/ipv4/ip_output.c:256 net/ipv4/ip_output.c:308 net/ipv4/ip_output.c:295) [ 2267.059266][ C0] ip_output (./include/linux/netfilter.h:303 net/ipv4/ip_output.c:433) [ 2267.059500][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 2267.059756][ C0] ? __pfx_ip_output (net/ipv4/ip_output.c:427) [ 2267.060024][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 2267.060361][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) [ 2267.060732][ C0] ? ip_local_out (./include/linux/skbuff.h:1131 ./include/net/dst.h:450 net/ipv4/ip_output.c:129) [ 2267.060986][ C0] __ip_queue_xmit (net/ipv4/ip_output.c:535 (discriminator 4)) [ 2267.061258][ 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:1584 (discriminator 4)) [ 2267.061512][ C0] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) [ 2267.061809][ C0] ? __pfx___tcp_transmit_skb (net/ipv4/tcp_output.c:1283) [ 2267.062141][ C0] ? 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) [ 2267.062464][ C0] tcp_write_xmit (net/ipv4/tcp_output.c:2792) [ 2267.062746][ C0] ? ipv4_mtu (./include/net/net_namespace.h:383 ./include/linux/netdevice.h:2654 ./include/net/ip.h:465 net/ipv4/route.c:1326) [ 2267.063000][ C0] ? __pfx_tcp_write_xmit (net/ipv4/tcp_output.c:2702) [ 2267.063278][ C0] ? __pfx_tcp_current_mss (net/ipv4/tcp_output.c:1853) [ 2267.063585][ C0] __tcp_push_pending_frames (net/ipv4/tcp_output.c:2977) [ 2267.063904][ C0] tcp_rcv_state_process (net/ipv4/tcp_input.c:5654 net/ipv4/tcp_input.c:6867) [ 2267.064211][ C0] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 2267.064464][ 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) [ 2267.064714][ C0] ? __lock_acquired (kernel/locking/lockdep.c:339 kernel/locking/lockdep.c:5991) [ 2267.064976][ C0] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6620) [ 2267.065278][ C0] ? __pfx___lock_acquired (kernel/locking/lockdep.c:5959) [ 2267.065573][ C0] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) [ 2267.065883][ C0] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1929) [ 2267.066154][ C0] tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2329) [ 2267.066419][ C0] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2162) [ 2267.066688][ C0] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) [ 2267.066956][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 2267.067267][ C0] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) [ 2267.067569][ C0] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 2267.067877][ C0] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 2267.068168][ C0] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 2267.068467][ C0] ? tcp_v4_early_demux (./include/linux/skbuff.h:1163 net/ipv4/tcp_ipv4.c:1988) [ 2267.068772][ C0] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1131 ./include/linux/skbuff.h:1183 net/ipv4/ip_input.c:390) [ 2267.069114][ 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) [ 2267.069327][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 2267.069575][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 2267.069870][ C0] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5992) [ 2267.070140][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 2267.070384][ C0] __netif_receive_skb_one_core (net/core/dev.c:5551 (discriminator 4)) [ 2267.070722][ C0] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5544) [ 2267.071072][ C0] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) [ 2267.071382][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 2267.071651][ C0] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5992) [ 2267.071926][ C0] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5994) [ 2267.072190][ C0] __napi_poll.constprop.0 (net/core/dev.c:6622) [ 2267.072503][ C0] net_rx_action (net/core/dev.c:6691 net/core/dev.c:6824) [ 2267.072766][ C0] ? __pfx_net_rx_action (net/core/dev.c:6788) [ 2267.073051][ C0] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:94 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 2267.073341][ C0] ? ktime_get_raw_ts64 (./include/linux/time64.h:161 kernel/time/timekeeping.c:1531) [ 2267.073636][ C0] ? hrtimer_interrupt (kernel/time/hrtimer.c:1827) [ 2267.073919][ C0] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3)) [ 2267.074226][ C0] __do_softirq (kernel/softirq.c:553) [ 2267.074474][ C0] irq_exit_rcu (kernel/softirq.c:427 kernel/softirq.c:632 kernel/softirq.c:644) [ 2267.074712][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) [ 2267.075008][ C0] [ 2267.075180][ C0] [ 2267.075343][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) [ 2267.075665][ C0] RIP: 0010:finish_task_switch.isra.0 (./arch/x86/include/asm/jump_label.h:27 kernel/sched/core.c:4960 kernel/sched/core.c:5284) [ 2267.076032][ C0] Code: 89 ff 48 c7 03 00 00 00 00 ff d2 0f 1f 00 4d 85 e4 75 ba 4c 89 ff e8 90 c0 65 02 e8 8b 99 2c 00 fb 65 48 8b 1c 25 c0 b6 1f 00 <66> 90 48 83 7d d0 00 74 56 65 48 8b 1c 25 c0 b6 1f 00 48 8d bb e8 All code ======== 0: 89 ff mov %edi,%edi 2: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) 9: ff d2 call *%rdx b: 0f 1f 00 nopl (%rax) e: 4d 85 e4 test %r12,%r12 11: 75 ba jne 0xffffffffffffffcd 13: 4c 89 ff mov %r15,%rdi 16: e8 90 c0 65 02 call 0x265c0ab 1b: e8 8b 99 2c 00 call 0x2c99ab 20: fb sti 21: 65 48 8b 1c 25 c0 b6 mov %gs:0x1fb6c0,%rbx 28: 1f 00 2a:* 66 90 xchg %ax,%ax <-- trapping instruction 2c: 48 83 7d d0 00 cmpq $0x0,-0x30(%rbp) 31: 74 56 je 0x89 33: 65 48 8b 1c 25 c0 b6 mov %gs:0x1fb6c0,%rbx 3a: 1f 00 3c: 48 rex.W 3d: 8d .byte 0x8d 3e: bb .byte 0xbb 3f: e8 .byte 0xe8 Code starting with the faulting instruction =========================================== 0: 66 90 xchg %ax,%ax 2: 48 83 7d d0 00 cmpq $0x0,-0x30(%rbp) 7: 74 56 je 0x5f 9: 65 48 8b 1c 25 c0 b6 mov %gs:0x1fb6c0,%rbx 10: 1f 00 12: 48 rex.W 13: 8d .byte 0x8d 14: bb .byte 0xbb 15: e8 .byte 0xe8 [ 2267.077038][ C0] RSP: 0018:ffffc9000025fa48 EFLAGS: 00000202 [ 2267.077361][ C0] RAX: 000000000009d457 RBX: ffff88800e10cc40 RCX: 1ffffffff4b9c839 [ 2267.077791][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa1a3f7a5 [ 2267.078203][ C0] RBP: ffffc9000025fa88 R08: 0000000000000001 R09: fffffbfff4b9cec2 [ 2267.078626][ C0] R10: ffffffffa5ce7617 R11: ffff8880353fc348 R12: ffff8880353fc198 [ 2267.079071][ C0] R13: ffffffffa501ce00 R14: 0000000000000003 R15: ffff8880353fc180 [ 2267.079491][ C0] ? finish_task_switch.isra.0 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:77 kernel/sched/sched.h:1397 kernel/sched/core.c:5154 kernel/sched/core.c:5272) [ 2267.079805][ C0] ? finish_task_switch.isra.0 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:77 kernel/sched/sched.h:1397 kernel/sched/core.c:5154 kernel/sched/core.c:5272) [ 2267.080114][ C0] ? __switch_to (./arch/x86/include/asm/bitops.h:55 ./include/asm-generic/bitops/instrumented-atomic.h:29 ./include/linux/thread_info.h:89 ./arch/x86/include/asm/fpu/sched.h:66 arch/x86/kernel/process_64.c:626) [ 2267.080370][ C0] __schedule (kernel/sched/core.c:6608) [ 2267.080605][ C0] ? __pfx___schedule (kernel/sched/core.c:6608) [ 2267.080869][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 2267.081170][ C0] ? schedule (kernel/sched/core.c:6785 kernel/sched/core.c:6816) [ 2267.081398][ C0] schedule (./arch/x86/include/asm/preempt.h:84 kernel/sched/core.c:6803 kernel/sched/core.c:6817) [ 2267.081634][ C0] pipe_write (fs/pipe.c:589 (discriminator 7)) [ 2267.081880][ 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) [ 2267.082127][ C0] ? __pfx_pipe_write (fs/pipe.c:439) [ 2267.082386][ C0] ? __mark_inode_dirty (./include/trace/events/writeback.h:141 fs/fs-writeback.c:2454) [ 2267.082669][ C0] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383) [ 2267.083012][ C0] ? __up_write (./arch/x86/include/asm/atomic64_64.h:91 ./include/linux/atomic/atomic-arch-fallback.h:2838 ./include/linux/atomic/atomic-long.h:268 ./include/linux/atomic/atomic-instrumented.h:3363 kernel/locking/rwsem.c:1374) [ 2267.083263][ C0] vfs_write (./include/linux/fs.h:2085 fs/read_write.c:497 fs/read_write.c:590) [ 2267.083497][ C0] ? __pfx_vfs_write (fs/read_write.c:571) [ 2267.083760][ C0] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 2267.084013][ C0] ksys_write (fs/read_write.c:643) [ 2267.084249][ C0] ? __pfx_ksys_write (fs/read_write.c:633) [ 2267.084514][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 2267.084762][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 2267.085076][ C0] RIP: 0033:0x7fc81c2df957 [ 2267.085327][ C0] 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 [ 2267.086337][ C0] RSP: 002b:00007fff180b70f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 2267.086782][ C0] RAX: ffffffffffffffda RBX: 0000559b8bbc9a20 RCX: 00007fc81c2df957 [ 2267.087197][ C0] RDX: 0000000000002000 RSI: 00007fff180b7110 RDI: 0000000000000001 [ 2267.087610][ C0] RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000 [ 2267.088035][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000002000 Finger prints: dump_stack_lvl:validate_chain:__lock_acquire:_raw_spin_lock_nested