====================================== | [ 46.450824][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 46.451017][ C3] | [ 46.451100][ C3] | [ 46.451100][ C3] stack backtrace: [ 46.451714][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 46.452159][ C3] Call Trace: [ 46.452276][ C3] [ 46.452359][ C3] dump_stack_lvl (lib/dump_stack.c:117) [ 46.452515][ C3] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 46.452725][ C3] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 46.453030][ C3] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 46.453183][ C3] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 46.453336][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 46.453492][ C3] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 46.453649][ C3] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 46.453804][ C3] ? stack_trace_save (kernel/stacktrace.c:123) [ 46.453967][ C3] ? add_chain_cache (kernel/locking/lockdep.c:3730) [ 46.454126][ C3] ? save_trace (kernel/locking/lockdep.c:586) [ 46.454280][ C3] mark_lock (kernel/locking/lockdep.c:4678) [ 46.454399][ C3] mark_usage (kernel/locking/lockdep.c:4567) [ 46.454517][ C3] __lock_acquire (kernel/locking/lockdep.c:5091) [ 46.454674][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 46.454828][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 46.455193][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 46.455348][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 46.455582][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 46.455839][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 46.455997][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 46.456227][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 46.456381][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 46.456621][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 46.456791][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 46.457028][ C3] br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 46.457260][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 46.457531][ C3] call_timer_fn (kernel/time/timer.c:1793) [ 46.457688][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 46.457841][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 46.457996][ C3] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 46.458245][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 46.458401][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 46.458560][ C3] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 46.458714][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 46.459093][ C3] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 46.459248][ 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) [ 46.459402][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 46.459555][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 46.459708][ C3] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 46.459863][ C3] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 46.460022][ C3] __do_softirq (kernel/softirq.c:554) [ 46.460179][ C3] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 46.460298][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 46.460452][ C3] [ 46.460536][ C3] [ 46.460615][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 46.460825][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) [ 46.461128][ C3] Code: 10 e8 11 39 9b fd 48 89 ef e8 49 a9 9b fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d f5 ae 4f 5f <74> 0e 5b 5d c3 cc cc cc cc e8 3f a3 be fd eb dc 0f 1f 44 00 00 5b All code ======== 0: 10 e8 adc %ch,%al 2: 11 39 adc %edi,(%rcx) 4: 9b fwait 5: fd std 6: 48 89 ef mov %rbp,%rdi 9: e8 49 a9 9b fd call 0xfffffffffd9ba957 e: 81 e3 00 02 00 00 and $0x200,%ebx 14: 75 1d jne 0x33 16: 9c pushf 17: 58 pop %rax 18: f6 c4 02 test $0x2,%ah 1b: 75 29 jne 0x46 1d: 48 85 db test %rbx,%rbx 20: 74 01 je 0x23 22: fb sti 23: 65 ff 0d f5 ae 4f 5f decl %gs:0x5f4faef5(%rip) # 0x5f4faf1f 2a:* 74 0e je 0x3a <-- trapping instruction 2c: 5b pop %rbx 2d: 5d pop %rbp 2e: c3 ret 2f: cc int3 30: cc int3 31: cc int3 32: cc int3 33: e8 3f a3 be fd call 0xfffffffffdbea377 38: eb dc jmp 0x16 3a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 3f: 5b pop %rbx Code starting with the faulting instruction =========================================== 0: 74 0e je 0x10 2: 5b pop %rbx 3: 5d pop %rbp 4: c3 ret 5: cc int3 6: cc int3 7: cc int3 8: cc int3 9: e8 3f a3 be fd call 0xfffffffffdbea34d e: eb dc jmp 0xffffffffffffffec 10: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 15: 5b pop %rbx [ 46.461687][ C3] RSP: 0018:ffffc90000ccf888 EFLAGS: 00000286 [ 46.462002][ C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff47a5d55 [ 46.462238][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa0b41921 [ 46.462472][ C3] RBP: ffff888001041080 R08: 0000000000000001 R09: fffffbfff47a3ca9 [ 46.462709][ C3] R10: ffffffffa3d1e54f R11: 0000000000001000 R12: ffff888007887a00 [ 46.462944][ C3] R13: 0000000000000000 R14: ffffc90000ccf8d8 R15: ffff888008d19000 [ 46.463275][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 46.463473][ C3] qlist_free_all (mm/kasan/quarantine.c:174) [ 46.463629][ C3] kasan_quarantine_reduce (./include/linux/srcu.h:285 mm/kasan/quarantine.c:287) [ 46.463788][ C3] __kasan_slab_alloc (mm/kasan/common.c:322) [ 46.464047][ C3] kmem_cache_alloc (./include/linux/kasan.h:201 mm/slub.c:3798 mm/slub.c:3845 mm/slub.c:3852) [ 46.464205][ C3] ? is_bpf_text_address (kernel/bpf/core.c:772) [ 46.464362][ C3] p9_tag_alloc (net/9p/client.c:285) [ 46.464518][ C3] ? __pfx_p9_tag_alloc (net/9p/client.c:277) [ 46.464680][ C3] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 46.464943][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 46.465097][ C3] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 46.465215][ C3] p9_client_prepare_req (net/9p/client.c:641) [ 46.465372][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 46.465527][ C3] ? __pfx_p9_client_prepare_req (net/9p/client.c:625) [ 46.465720][ C3] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 46.465873][ C3] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 46.466025][ C3] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 46.466144][ C3] p9_client_rpc (net/9p/client.c:688 (discriminator 4)) [ 46.466300][ C3] ? __pfx_p9_client_rpc (net/9p/client.c:672) [ 46.466454][ C3] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 46.466610][ C3] ? v9fs_dir_release (./include/net/9p/client.h:269 fs/9p/vfs_dir.c:224) [ 46.466774][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 46.467129][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 46.467283][ 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) [ 46.467437][ C3] p9_client_clunk (net/9p/client.c:1438 (discriminator 3)) [ 46.467590][ C3] v9fs_dir_release (./include/net/9p/client.h:278 fs/9p/vfs_dir.c:224) [ 46.467746][ C3] __fput (fs/file_table.c:422) [ 46.467866][ C3] task_work_run (kernel/task_work.c:180 (discriminator 1)) [ 46.468021][ C3] ? __pfx_task_work_run (kernel/task_work.c:148) [ 46.468176][ C3] ? switch_task_namespaces (kernel/nsproxy.c:250) [ 46.468332][ C3] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 46.468487][ C3] do_exit (kernel/exit.c:879) [ 46.468603][ 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) [ 46.468771][ C3] ? __pfx_do_exit (kernel/exit.c:819) [ 46.468933][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 46.469091][ C3] do_group_exit (kernel/exit.c:1008) [ 46.469249][ C3] __x64_sys_exit_group (kernel/exit.c:1036) [ 46.469407][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 46.469563][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 46.469758][ C3] RIP: 0033:0x7fc2df975a8d [ 46.469917][ C3] Code: Unable to access opcode bytes at 0x7fc2df975a63. Code starting with the faulting instruction =========================================== [ 46.470116][ C3] RSP: 002b:00007fff01263d58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 46.470351][ C3] RAX: ffffffffffffffda RBX: 00007fc2dfa529c0 RCX: 00007fc2df975a8d [ 46.470581][ C3] RDX: 00000000000000e7 RSI: fffffffffffffe98 RDI: 0000000000000000 [ 46.470826][ C3] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000048 [ 46.471061][ C3] R10: 00007fff01263ba0 R11: 0000000000000246 R12: 00007fc2dfa529c0 Finger prints: dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage