====================================== | [ 51.113763][ C3] common_startup_64 (arch/x86/kernel/head_64.S:421) | [ 51.113903][ C3] | [ 51.113974][ C3] | [ 51.113974][ C3] stack backtrace: [ 51.114477][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 51.114788][ C3] Call Trace: [ 51.114996][ C3] [ 51.115073][ C3] dump_stack_lvl (lib/dump_stack.c:117) [ 51.115227][ C3] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 51.115398][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:421) [ 51.115542][ C3] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 51.115716][ C3] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 51.115856][ C3] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 51.115995][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) [ 51.116140][ C3] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 51.116391][ C3] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 51.116533][ C3] ? stack_trace_save (kernel/stacktrace.c:123) [ 51.116677][ C3] ? add_chain_cache (kernel/locking/lockdep.c:3730) [ 51.116822][ C3] ? save_trace (kernel/locking/lockdep.c:586) [ 51.117047][ C3] mark_lock (kernel/locking/lockdep.c:4678) [ 51.117158][ C3] mark_usage (kernel/locking/lockdep.c:4567) [ 51.117281][ C3] __lock_acquire (kernel/locking/lockdep.c:5091) [ 51.117421][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 51.117570][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 51.117898][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 51.118038][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 51.118253][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 51.118553][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 51.118693][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 51.118902][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 51.119047][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 51.119357][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 51.119504][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 51.119713][ C3] br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 51.119925][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 51.120255][ C3] call_timer_fn (kernel/time/timer.c:1793) [ 51.120423][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 51.120575][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 51.120832][ C3] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 51.120990][ C3] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 51.121112][ C3] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 51.121276][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 51.121540][ C3] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 51.121704][ C3] ? __lock_release (kernel/locking/lockdep.c:5430) [ 51.121862][ C3] ? 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) [ 51.122021][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 51.122184][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 51.122457][ C3] ? timer_expire_remote (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2181) [ 51.122631][ C3] timer_expire_remote (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2181) [ 51.122851][ C3] 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) [ 51.123096][ C3] ? __pfx_tmigr_handle_remote_cpu (kernel/time/timer_migration.c:869) [ 51.123522][ C3] tmigr_handle_remote_up (kernel/time/timer_migration.c:1003) [ 51.123768][ C3] tmigr_handle_remote (kernel/time/timer_migration.c:488 kernel/time/timer_migration.c:1061) [ 51.123994][ C3] ? 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) [ 51.124228][ C3] ? __pfx_tmigr_handle_remote (kernel/time/timer_migration.c:1026) [ 51.124635][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 51.124901][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) [ 51.125238][ C3] __do_softirq (kernel/softirq.c:554) [ 51.125463][ C3] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 51.125782][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 51.126009][ C3] [ 51.126129][ C3] [ 51.126242][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 51.126527][ C3] RIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:72 arch/x86/kernel/process.c:743) [ 51.126947][ C3] 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 a3 30 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 a3 30 35 00 verw 0x3530a3(%rip) # 0x3530cb 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 [ 51.127781][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000242 [ 51.128107][ C3] RAX: 0000000000095a79 RBX: 1ffff9200002dfc1 RCX: ffffffffb2d0e9d5 [ 51.128471][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb06aa4a4 [ 51.128810][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 51.129300][ C3] R10: ffff8880361b84e3 R11: ffff8880361ad9b0 R12: 0000000000000000 [ 51.129662][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 51.130024][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:147) [ 51.130403][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:192) [ 51.130643][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) [ 51.130884][ C3] cpuidle_idle_call (kernel/sched/idle.c:192) [ 51.131115][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) [ 51.131493][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) [ 51.131730][ C3] do_idle (kernel/sched/idle.c:332) [ 51.131916][ C3] cpu_startup_entry (kernel/sched/idle.c:429 (discriminator 1)) [ 51.132137][ C3] start_secondary (arch/x86/kernel/smpboot.c:201 arch/x86/kernel/smpboot.c:281) [ 51.132478][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:231) Finger prints: common_startup_64:dump_stack_lvl:mark_lock_irq:mark_lock