====================================== | [ 125.847141][ C2] RCU nest depth: 0, expected: 0 | [ 125.847266][ C2] INFO: lockdep is turned off. | [ 125.847394][ C2] Preemption disabled at: | [ 125.847396][ C2] 0x0 [ 125.847640][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 125.847642][ C2] Call Trace: [ 125.847643][ C2] [ 125.847645][ C2] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 125.847653][ C2] __might_resched.cold (kernel/sched/core.c:9163) [ 125.847656][ C2] ? default_idle_call (kernel/sched/idle.c:122) [ 125.847661][ C2] ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3)) [ 125.847665][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:312) [ 125.847668][ C2] __mutex_lock (kernel/locking/mutex.c:623 kernel/locking/mutex.c:820) [ 125.847670][ C2] ? __tcf_chain_put (net/sched/cls_api.c:694) [ 125.847674][ C2] ? ww_mutex_lock (kernel/locking/mutex.c:933) [ 125.847677][ C2] ? __tcf_chain_put (net/sched/cls_api.c:694) [ 125.847679][ C2] __tcf_chain_put (net/sched/cls_api.c:694) [ 125.847680][ C2] ? free_percpu.part.0 (./include/linux/spinlock.h:408 (discriminator 3) mm/percpu.c:2283 (discriminator 3)) [ 125.847684][ C2] tcf_action_rcu_free (net/sched/act_api.c:130 net/sched/act_api.c:370 net/sched/act_api.c:378) [ 125.847686][ C2] ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2)) [ 125.847689][ C2] rcu_do_batch (kernel/rcu/tree.c:2617) [ 125.847692][ C2] ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19)) [ 125.847694][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 125.847697][ C2] ? 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) [ 125.847700][ C2] ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:78) [ 125.847702][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 1) kernel/locking/spinlock.c:198 (discriminator 1)) [ 125.847704][ C2] rcu_core (kernel/rcu/tree.c:2869) [ 125.847706][ C2] handle_softirqs (kernel/softirq.c:622) [ 125.847709][ C2] ? clockevents_tick_resume (kernel/time/clockevents.c:193) [ 125.847712][ C2] ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1)) [ 125.847713][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 125.847715][ C2] ? lock_release (./include/trace/events/lock.h:69 (discriminator 22) kernel/locking/lockdep.c:5879 (discriminator 22)) [ 125.847717][ C2] __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735) [ 125.847718][ C2] irq_exit_rcu (kernel/softirq.c:752) [ 125.847720][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37)) [ 125.847722][ C2] [ 125.847723][ C2] [ 125.847723][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 125.847725][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697) [ 125.847728][ C2] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:62) [ 125.847731][ C2] 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 [ 125.847734][ C2] RSP: 0018:ffa0000000157de8 EFLAGS: 00000246 [ 125.847738][ C2] RAX: 0000000000000002 RBX: ff11000001bb4640 RCX: 0000000000000001 [ 125.847739][ C2] RDX: 0000000000000002 RSI: ffffffffac66f640 RDI: ffffffffa9ed9667 [ 125.847740][ C2] RBP: 0000000000000000 R08: ffffffffac2694f1 R09: 1fe2200005d2639a [ 125.847741][ C2] R10: 0000000000000002 R11: 0000000000000000 R12: 1ff400000002afc0 [ 125.847741][ C2] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 [ 125.847743][ C2] ? ct_kernel_exit.constprop.0 (./include/linux/instrumented.h:97 kernel/context_tracking.c:124) [ 125.847745][ C2] ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199) [ 125.847749][ C2] default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:767) [ 125.847750][ C2] default_idle_call (kernel/sched/idle.c:122) [ 125.847752][ C2] cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199) [ 125.847754][ C2] ? arch_cpu_idle_exit+0x40/0x40 [ 125.847755][ C2] ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49) [ 125.847757][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 125.847758][ C2] do_idle (kernel/sched/idle.c:352) [ 125.847760][ C2] cpu_startup_entry (kernel/sched/idle.c:451) [ 125.847761][ C2] start_secondary (arch/x86/kernel/smpboot.c:312) [ 125.847763][ C2] ? set_cpu_sibling_map (./arch/x86/include/asm/smp.h:148 (discriminator 4)) Finger prints: __mutex_lock:__tcf_chain_put:tcf_action_rcu_free:rcu_do_batch:rcu_core