====================================== | [ 46.936456][ C0] common_startup_64 (arch/x86/kernel/head_64.S:421) | [ 46.936629][ C0] | [ 46.936813][ C0] | [ 46.936813][ C0] stack backtrace: [ 46.937266][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 46.937729][ C0] Call Trace: [ 46.937862][ C0] [ 46.937951][ C0] dump_stack_lvl (lib/dump_stack.c:117) [ 46.938116][ C0] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 46.938415][ C0] ? common_startup_64 (arch/x86/kernel/head_64.S:421) [ 46.938588][ C0] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 46.938792][ C0] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 46.938954][ C0] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 46.939121][ C0] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) [ 46.939287][ C0] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 46.939448][ C0] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 46.939612][ C0] ? stack_trace_save (kernel/stacktrace.c:123) [ 46.939775][ C0] ? add_chain_cache (kernel/locking/lockdep.c:3730) [ 46.940062][ C0] ? save_trace (kernel/locking/lockdep.c:586) [ 46.940228][ C0] mark_lock (kernel/locking/lockdep.c:4678) [ 46.940353][ C0] mark_usage (kernel/locking/lockdep.c:4567) [ 46.940476][ C0] __lock_acquire (kernel/locking/lockdep.c:5091) [ 46.940755][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 46.940930][ C0] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 46.941209][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 46.941372][ C0] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 46.941711][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 46.941874][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 46.942035][ C0] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 46.942279][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 46.942535][ C0] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 46.942777][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 46.942940][ C0] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 46.943174][ C0] br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 46.943524][ C0] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 46.943801][ C0] call_timer_fn (kernel/time/timer.c:1793) [ 46.943969][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 46.944130][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 46.944293][ C0] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 46.944456][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 46.944621][ C0] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 46.944784][ C0] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 46.945061][ C0] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 46.945223][ C0] ? __lock_release (kernel/locking/lockdep.c:5430) [ 46.945394][ C0] ? 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) [ 46.945658][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 46.945821][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 46.945989][ C0] ? timer_expire_remote (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2181) [ 46.946153][ C0] timer_expire_remote (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2181) [ 46.946423][ C0] 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) [ 46.946586][ C0] ? __pfx_tmigr_handle_remote_cpu (kernel/time/timer_migration.c:869) [ 46.946791][ C0] tmigr_handle_remote_up (kernel/time/timer_migration.c:1003) [ 46.946960][ C0] tmigr_handle_remote (kernel/time/timer_migration.c:488 kernel/time/timer_migration.c:1061) [ 46.947122][ C0] ? __pfx_tmigr_handle_remote (kernel/time/timer_migration.c:1026) [ 46.947285][ C0] __do_softirq (kernel/softirq.c:554) [ 46.947451][ C0] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 46.947574][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 46.947736][ C0] [ 46.947919][ C0] [ 46.948000][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 46.948204][ C0] RIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:72 arch/x86/kernel/process.c:743) [ 46.948369][ C0] 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 93 20 35 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 93 20 35 00 verw 0x352093(%rip) # 0x3520bb 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 [ 46.949036][ C0] RSP: 0018:ffffffff9f407e00 EFLAGS: 00000242 [ 46.949240][ C0] RAX: 00000000000a0557 RBX: 1ffffffff3e80fc2 RCX: ffffffff9e50f9e5 [ 46.949585][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9beaa4a4 [ 46.949823][ C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0709c [ 46.950061][ C0] R10: ffff8880360384e3 R11: ffff88803602d9b0 R12: 0000000000000000 [ 46.950394][ C0] R13: ffffffff9f41d000 R14: dffffc0000000000 R15: 0000000000014770 [ 46.950655][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:147) [ 46.950820][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:192) [ 46.951075][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) [ 46.951236][ C0] cpuidle_idle_call (kernel/sched/idle.c:192) [ 46.951395][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) [ 46.951556][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) [ 46.951721][ C0] do_idle (kernel/sched/idle.c:332) [ 46.951936][ C0] cpu_startup_entry (kernel/sched/idle.c:429 (discriminator 1)) [ 46.952100][ C0] rest_init (./include/linux/rcupdate.h:782 init/main.c:703) [ 46.952223][ C0] start_kernel (init/main.c:1024 (discriminator 1)) [ 46.952389][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:495) [ 46.952643][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:437 (discriminator 17)) Finger prints: common_startup_64:dump_stack_lvl:mark_lock_irq:mark_lock