====================================== | [ 23.553692][ C0] 1 lock held by swapper/0/0: | [ 23.553801][ C0] #0: ffffffffb7177c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2)) | [ 23.554008][ C0] | [ 23.554008][ C0] stack backtrace: [ 23.554134][ C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.554135][ C0] Call Trace: [ 23.554137][ C0] [ 23.554138][ C0] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 23.554144][ C0] print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042) [ 23.554146][ C0] ? filter_irq_stacks (kernel/stacktrace.c:402) [ 23.554150][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267) [ 23.554151][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37)) [ 23.554153][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697) [ 23.554155][ C0] ? save_trace (kernel/locking/lockdep.c:589) [ 23.554157][ C0] ? uncore_type_init (arch/x86/events/intel/uncore.c:1009 (discriminator 1)) [ 23.554161][ C0] mark_lock (kernel/locking/lockdep.c:4753) [ 23.554163][ C0] mark_usage (kernel/locking/lockdep.c:4642) [ 23.554165][ C0] __lock_acquire (kernel/locking/lockdep.c:5191) [ 23.554166][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 23.554168][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 23.554172][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 23.554174][ C0] ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred [ 23.554175][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 23.554177][ C0] ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22)) [ 23.554179][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1)) [ 23.554181][ C0] ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred [ 23.554182][ C0] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred [ 23.554184][ C0] tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378) [ 23.554186][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2)) [ 23.554187][ C0] rcu_do_batch (kernel/rcu/tree.c:2617) [ 23.554190][ C0] ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19)) [ 23.554192][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 23.554194][ C0] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 23.554195][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2)) [ 23.554197][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 23.554198][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6)) [ 23.554200][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 1) kernel/locking/spinlock.c:198 (discriminator 1)) [ 23.554202][ C0] rcu_core (kernel/rcu/tree.c:2869) [ 23.554204][ C0] handle_softirqs (kernel/softirq.c:622) [ 23.554206][ C0] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 23.554209][ C0] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 23.554210][ C0] ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1)) [ 23.554212][ C0] __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735) [ 23.554214][ C0] irq_exit_rcu (kernel/softirq.c:752) [ 23.554215][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37)) [ 23.554217][ C0] [ 23.554218][ C0] [ 23.554219][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697) [ 23.554220][ C0] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:62) [ 23.554223][ C0] Code: 48 8b 3d 44 d3 00 02 e8 1f 00 00 00 48 2b 05 c8 71 a3 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 43 f4 22 00 fb f4 0f 1f 40 d6 48 83 ec 20 8b 17 49 89 f8 83 e2 fe 41 89 d2 0f 01 All code ======== 0: 48 8b 3d 44 d3 00 02 mov 0x200d344(%rip),%rdi # 0x200d34b 7: e8 1f 00 00 00 call 0x2b c: 48 2b 05 c8 71 a3 00 sub 0xa371c8(%rip),%rax # 0xa371db 13: c3 ret 14: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 1b: f3 0f 1e fa endbr64 1f: eb 07 jmp 0x28 21: 0f 00 2d 43 f4 22 00 verw 0x22f443(%rip) # 0x22f46b 28: fb sti 29: f4 hlt 2a:* c3 ret <-- trapping instruction 2b: 0f 1f 40 d6 nopl -0x2a(%rax) 2f: 48 83 ec 20 sub $0x20,%rsp 33: 8b 17 mov (%rdi),%edx 35: 49 89 f8 mov %rdi,%r8 38: 83 e2 fe and $0xfffffffe,%edx 3b: 41 89 d2 mov %edx,%r10d 3e: 0f .byte 0xf 3f: 01 .byte 0x1 Code starting with the faulting instruction =========================================== 0: c3 ret 1: 0f 1f 40 d6 nopl -0x2a(%rax) 5: 48 83 ec 20 sub $0x20,%rsp 9: 8b 17 mov (%rdi),%edx b: 49 89 f8 mov %rdi,%r8 e: 83 e2 fe and $0xfffffffe,%edx 11: 41 89 d2 mov %edx,%r10d 14: 0f .byte 0xf 15: 01 .byte 0x1 [ 23.554225][ C0] RSP: 0018:ffffffffb6e07e00 EFLAGS: 00000282 [ 23.554227][ C0] RAX: 000000000009b029 RBX: ffffffffb6e1c740 RCX: ffffffffb3ed9667 [ 23.554228][ C0] RDX: ffffffffb6e1c740 RSI: ffffffffb6c01bcb RDI: ffffffffb666f6c0 [ 23.554229][ C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 23.554230][ C0] R10: 0000000000000000 R11: 0000000000000001 R12: 1ffffffff6dc0fc3 [ 23.554231][ C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000014770 [ 23.554232][ C0] ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199) [ 23.554235][ C0] default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:767) [ 23.554237][ C0] default_idle_call (kernel/sched/idle.c:122) [ 23.554239][ C0] cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199) [ 23.554241][ C0] ? arch_cpu_idle_exit+0x40/0x40 [ 23.554242][ C0] ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49) [ 23.554245][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 23.554246][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 23.554248][ C0] do_idle (kernel/sched/idle.c:352) [ 23.554250][ C0] cpu_startup_entry (kernel/sched/idle.c:451) [ 23.554251][ C0] rest_init (init/main.c:762) [ 23.554253][ C0] start_kernel (init/main.c:1220) [ 23.554255][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:310) [ 23.554257][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:291) Finger prints: mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock