====================================== | [ 360.778987][ C2] common_startup_64 (arch/x86/kernel/head_64.S:421) | [ 360.779129][ C2] | [ 360.779198][ C2] | [ 360.779198][ C2] stack backtrace: [ 360.779668][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 360.779968][ C2] Call Trace: [ 360.780075][ C2] [ 360.780228][ C2] dump_stack_lvl (lib/dump_stack.c:117) [ 360.780369][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 360.780543][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:421) [ 360.780685][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 360.780936][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 360.781072][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 360.781207][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) [ 360.781345][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 360.781562][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 360.781702][ C2] ? stack_trace_save (kernel/stacktrace.c:123) [ 360.781840][ C2] ? add_chain_cache (kernel/locking/lockdep.c:3730) [ 360.781995][ C2] ? save_trace (kernel/locking/lockdep.c:586) [ 360.782210][ C2] mark_lock (kernel/locking/lockdep.c:4678) [ 360.782314][ C2] mark_usage (kernel/locking/lockdep.c:4567) [ 360.782417][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) [ 360.782553][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 360.782693][ C2] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) [ 360.782940][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 360.783074][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) [ 360.783248][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 360.783385][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 360.783602][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) [ 360.783771][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 360.783908][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) [ 360.784076][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 360.784366][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) [ 360.784536][ C2] br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) [ 360.784709][ C2] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) [ 360.784957][ C2] call_timer_fn (kernel/time/timer.c:1793) [ 360.785093][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 360.785229][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 360.785364][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 360.785579][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 360.785693][ C2] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 360.785829][ C2] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) [ 360.786001][ C2] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 360.786140][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 360.786276][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:115 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) [ 360.786412][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 360.786551][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 360.786689][ C2] ? timer_expire_remote (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2181) [ 360.786828][ C2] timer_expire_remote (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2181) [ 360.786965][ C2] tmigr_handle_remote_cpu (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:67 ./arch/x86/include/asm/irqflags.h:127 kernel/time/timer_migration.c:925) [ 360.787106][ C2] ? __pfx_tmigr_handle_remote_cpu (kernel/time/timer_migration.c:869) [ 360.787276][ C2] tmigr_handle_remote_up (kernel/time/timer_migration.c:1003) [ 360.787414][ C2] tmigr_handle_remote (kernel/time/timer_migration.c:488 kernel/time/timer_migration.c:1061) [ 360.787549][ C2] ? __pfx_tmigr_handle_remote (kernel/time/timer_migration.c:1026) [ 360.787687][ C2] __do_softirq (kernel/softirq.c:554) [ 360.787825][ C2] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 360.787930][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 360.788068][ C2] [ 360.788140][ C2] [ 360.788209][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 360.788378][ C2] RIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:72 arch/x86/kernel/process.c:743) [ 360.788523][ C2] 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 66 90 0f 00 2d d3 eb 32 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: 66 90 xchg %ax,%ax 21: 0f 00 2d d3 eb 32 00 verw 0x32ebd3(%rip) # 0x32ebfb 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 [ 360.789008][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000246 [ 360.789194][ C2] RAX: 0000000000e5a80f RBX: 1ffff9200002bfc1 RCX: ffffffffb0732ea5 [ 360.789407][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffadeac1d4 [ 360.789614][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2709c [ 360.789822][ C2] R10: ffff8880361384e3 R11: ffff88803613de40 R12: 0000000000000000 [ 360.790025][ C2] R13: ffff888001b8c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 360.790234][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:147) [ 360.790372][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:192) [ 360.790510][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) [ 360.790647][ C2] cpuidle_idle_call (kernel/sched/idle.c:192) [ 360.790783][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) [ 360.790922][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) [ 360.791060][ C2] do_idle (kernel/sched/idle.c:332) [ 360.791166][ C2] cpu_startup_entry (kernel/sched/idle.c:429 (discriminator 1)) [ 360.791301][ C2] start_secondary (arch/x86/kernel/smpboot.c:201 arch/x86/kernel/smpboot.c:281) [ 360.791436][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:231) Finger prints: common_startup_64:dump_stack_lvl:mark_lock_irq:mark_lock