====================================== | [ 38.810644][ C2] common_startup_64 (arch/x86/kernel/head_64.S:421) | [ 38.810793][ C2] | [ 38.810872][ C2] | [ 38.810872][ C2] stack backtrace: [ 38.811276][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 38.811598][ C2] Call Trace: [ 38.811740][ C2] [ 38.811906][ C2] dump_stack_lvl (lib/dump_stack.c:117) [ 38.812082][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 38.812261][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:421) [ 38.812421][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 38.812703][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 38.812857][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 38.813001][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) [ 38.813146][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 38.813409][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 38.813604][ C2] ? stack_trace_save (kernel/stacktrace.c:123) [ 38.813757][ C2] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 38.813901][ C2] ? save_trace (kernel/locking/lockdep.c:586) [ 38.814069][ C2] mark_lock (kernel/locking/lockdep.c:4678) [ 38.814294][ C2] mark_usage (kernel/locking/lockdep.c:4567) [ 38.814409][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) [ 38.814562][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 38.814723][ C2] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) [ 38.814950][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 38.815095][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 38.815239][ C2] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) [ 38.815389][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 38.815531][ C2] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) [ 38.815775][ C2] _raw_read_lock_bh (./include/linux/rwlock_api_smp.h:177 kernel/locking/spinlock.c:252) [ 38.815919][ C2] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) [ 38.816060][ C2] ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) [ 38.816206][ C2] ndisc_send_ns (net/ipv6/ndisc.c:658) [ 38.816440][ C2] ? __pfx_ndisc_send_ns (net/ipv6/ndisc.c:653) [ 38.816607][ C2] ? __ipv6_chk_addr_and_flags (net/ipv6/addrconf.c:2009) [ 38.816793][ C2] ndisc_solicit (net/ipv6/ndisc.c:736) [ 38.816947][ C2] ? __pfx_ndisc_solicit (net/ipv6/ndisc.c:736) [ 38.817095][ C2] ? neigh_probe (net/core/neighbour.c:1074) [ 38.817238][ C2] neigh_probe (net/core/neighbour.c:1075) [ 38.817348][ C2] neigh_timer_handler (net/core/neighbour.c:1163) [ 38.817490][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 38.817729][ C2] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1083) [ 38.817877][ C2] call_timer_fn (kernel/time/timer.c:1793) [ 38.818021][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 38.818164][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 38.818308][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 38.818594][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 38.818718][ C2] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 38.818881][ C2] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1083) [ 38.819046][ C2] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 38.819190][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 38.819336][ 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) [ 38.819480][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 38.819622][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 38.819862][ C2] ? timer_expire_remote (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2181) [ 38.820008][ C2] timer_expire_remote (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2181) [ 38.820151][ 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) [ 38.820305][ C2] ? __pfx_tmigr_handle_remote_cpu (kernel/time/timer_migration.c:869) [ 38.820597][ C2] tmigr_handle_remote_up (kernel/time/timer_migration.c:1003) [ 38.820742][ C2] tmigr_handle_remote (kernel/time/timer_migration.c:488 kernel/time/timer_migration.c:1061) [ 38.820922][ C2] ? __pfx_tmigr_handle_remote (kernel/time/timer_migration.c:1026) [ 38.821066][ C2] __do_softirq (kernel/softirq.c:554) [ 38.821216][ C2] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 38.821429][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 38.821570][ C2] [ 38.821644][ C2] [ 38.821716][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 38.821897][ 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) [ 38.822048][ 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 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 [ 38.822557][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000242 [ 38.822825][ C2] RAX: 00000000000e5f83 RBX: 1ffff9200002bfc1 RCX: ffffffffaf50f9e5 [ 38.823070][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffaceaa4a4 [ 38.823287][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2709c [ 38.823682][ C2] R10: ffff8880361384e3 R11: ffff88803613dc80 R12: 0000000000000000 [ 38.823925][ C2] R13: ffff888001b7c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 38.824181][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:147) [ 38.824361][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:192) [ 38.824522][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) [ 38.824719][ C2] cpuidle_idle_call (kernel/sched/idle.c:192) [ 38.824876][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) [ 38.825143][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) [ 38.825301][ C2] do_idle (kernel/sched/idle.c:332) [ 38.825436][ C2] cpu_startup_entry (kernel/sched/idle.c:429 (discriminator 1)) [ 38.825594][ C2] start_secondary (arch/x86/kernel/smpboot.c:201 arch/x86/kernel/smpboot.c:281) [ 38.825945][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:231) Finger prints: common_startup_64:dump_stack_lvl:mark_lock_irq:mark_lock