====================================== | [ 37.976658][ C2] common_startup_64 (arch/x86/kernel/head_64.S:421) | [ 37.976793][ C2] | [ 37.976885][ C2] | [ 37.976885][ C2] stack backtrace: [ 37.977295][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 37.977618][ C2] Call Trace: [ 37.977819][ C2] <IRQ> [ 37.977892][ C2] dump_stack_lvl (lib/dump_stack.c:117) [ 37.978032][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 37.978200][ C2] ? kernel_text_address (kernel/extable.c:99) [ 37.978366][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 37.978652][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 37.978787][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 37.978943][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) [ 37.979097][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 37.979326][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:421) [ 37.979462][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 37.979620][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [ 37.979764][ C2] ? save_trace (kernel/locking/lockdep.c:586) [ 37.980016][ C2] mark_lock (kernel/locking/lockdep.c:4678) [ 37.980124][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [ 37.980257][ C2] mark_usage (kernel/locking/lockdep.c:4567) [ 37.980384][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) [ 37.980522][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 37.980664][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) [ 37.980799][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 37.980960][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) [ 37.981099][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 37.981236][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 37.981401][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) [ 37.981535][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 37.981699][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) [ 37.981936][ C2] _raw_write_lock (./include/linux/rwlock_api_smp.h:210 kernel/locking/spinlock.c:300) [ 37.982066][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) [ 37.982209][ C2] addrconf_rs_timer (net/ipv6/addrconf.c:4023) [ 37.982365][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 37.982514][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) [ 37.982664][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 37.982802][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 37.982955][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 37.983148][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) [ 37.983360][ C2] call_timer_fn (kernel/time/timer.c:1793) [ 37.983569][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 37.983791][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 37.983991][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 37.984429][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 37.984569][ C2] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 37.984777][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) [ 37.984988][ C2] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 37.985202][ 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) [ 37.985516][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 37.985727][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 37.985939][ C2] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 37.986153][ C2] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 37.986496][ C2] __do_softirq (kernel/softirq.c:554) [ 37.986711][ C2] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 37.986877][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 37.987087][ C2] </IRQ> [ 37.987197][ C2] <TASK> [ 37.987444][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 37.987707][ 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) [ 37.987935][ 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 93 20 35 00 fb f4 <fa> 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 [ 37.988835][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000246 [ 37.989098][ C2] RAX: 0000000000103771 RBX: 1ffff9200002bfc1 RCX: ffffffffb810f9e5 [ 37.989557][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb5aaa4a4 [ 37.989877][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005f2709c [ 37.990196][ C2] R10: ffff88802f9384e3 R11: ffff88802f93dc80 R12: 0000000000000000 [ 37.990654][ C2] R13: ffff888001b7c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 37.990973][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:147) [ 37.991186][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:192) [ 37.991404][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) [ 37.991760][ C2] cpuidle_idle_call (kernel/sched/idle.c:192) [ 37.991971][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) [ 37.992184][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) [ 37.992400][ C2] do_idle (kernel/sched/idle.c:332) [ 37.992701][ C2] cpu_startup_entry (kernel/sched/idle.c:429 (discriminator 1)) [ 37.992911][ C2] start_secondary (arch/x86/kernel/smpboot.c:201 arch/x86/kernel/smpboot.c:281) [ 37.993126][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:231) Finger prints: common_startup_64:dump_stack_lvl:mark_lock_irq:mark_lock