====================================== | [ 47.975126][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 47.975462][ C1] | [ 47.975591][ C1] | [ 47.975591][ C1] stack backtrace: [ 47.976477][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 47.977271][ C1] Call Trace: [ 47.977465][ C1] [ 47.977605][ C1] dump_stack_lvl (lib/dump_stack.c:117) [ 47.977878][ C1] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 47.978192][ C1] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 47.978516][ C1] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 47.978783][ C1] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 47.979050][ C1] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 47.979309][ C1] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 47.979754][ C1] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 47.980015][ C1] ? stack_trace_save (kernel/stacktrace.c:123) [ 47.980278][ C1] ? add_chain_cache (kernel/locking/lockdep.c:3730) [ 47.980542][ C1] ? save_trace (kernel/locking/lockdep.c:586) [ 47.980986][ C1] mark_lock (kernel/locking/lockdep.c:4678) [ 47.981110][ C1] mark_usage (kernel/locking/lockdep.c:4567) [ 47.981230][ C1] __lock_acquire (kernel/locking/lockdep.c:5091) [ 47.981390][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 47.981549][ C1] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 47.981923][ C1] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 47.982090][ C1] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 47.982322][ C1] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 47.982582][ C1] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 47.982739][ C1] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 47.982972][ C1] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 47.983129][ C1] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 47.983462][ C1] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 47.983621][ C1] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 47.983853][ C1] br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 47.984085][ C1] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 47.984455][ C1] call_timer_fn (kernel/time/timer.c:1793) [ 47.984614][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 47.984770][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 47.985030][ C1] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 47.985194][ C1] ? 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) [ 47.985351][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 47.985508][ C1] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 47.985666][ C1] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 47.985938][ C1] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 47.986095][ C1] ? 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) [ 47.986250][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 47.986505][ C1] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 47.986663][ C1] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 47.986823][ C1] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 47.986981][ C1] __do_softirq (kernel/softirq.c:554) [ 47.987139][ C1] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 47.987360][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 47.987517][ C1] [ 47.987597][ C1] [ 47.987676][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 47.987873][ C1] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) [ 47.988196][ C1] Code: 10 e8 21 49 9b fd 48 89 ef e8 59 b9 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 05 bf 8f 73 <74> 0e 5b 5d c3 cc cc cc cc e8 4f b3 be fd eb dc 0f 1f 44 00 00 5b All code ======== 0: 10 e8 adc %ch,%al 2: 21 49 9b and %ecx,-0x65(%rcx) 5: fd std 6: 48 89 ef mov %rbp,%rdi 9: e8 59 b9 9b fd call 0xfffffffffd9bb967 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 05 bf 8f 73 decl %gs:0x738fbf05(%rip) # 0x738fbf2f 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 4f b3 be fd call 0xfffffffffdbeb387 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 4f b3 be fd call 0xfffffffffdbeb35d e: eb dc jmp 0xffffffffffffffec 10: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 15: 5b pop %rbx [ 47.988748][ C1] RSP: 0018:ffffc9000072f318 EFLAGS: 00000286 [ 47.988945][ C1] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1f25955 [ 47.989181][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8c740911 [ 47.989529][ C1] RBP: ffff888001040e00 R08: 0000000000000001 R09: fffffbfff1f238a9 [ 47.989770][ C1] R10: ffffffff8f91c54f R11: 0000000000000400 R12: ffff8880023be7c8 [ 47.990022][ C1] R13: 0000000000000000 R14: ffffc9000072f368 R15: ffff888005cd2800 [ 47.990364][ C1] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 47.990560][ C1] qlist_free_all (mm/kasan/quarantine.c:174) [ 47.990741][ C1] kasan_quarantine_reduce (./include/linux/srcu.h:285 mm/kasan/quarantine.c:287) [ 47.990901][ C1] __kasan_slab_alloc (mm/kasan/common.c:322) [ 47.991188][ C1] kmem_cache_alloc (./include/linux/kasan.h:201 mm/slub.c:3798 mm/slub.c:3845 mm/slub.c:3852) [ 47.991351][ C1] p9_tag_alloc (net/9p/client.c:285) [ 47.991508][ C1] ? __pfx_p9_tag_alloc (net/9p/client.c:277) [ 47.991678][ C1] ? __lock_release (kernel/locking/lockdep.c:5430) [ 47.991834][ C1] ? __debug_check_no_obj_freed (lib/debugobjects.c:1000) [ 47.992029][ C1] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 47.992186][ C1] p9_client_prepare_req (net/9p/client.c:641) [ 47.992348][ C1] ? __pfx_p9_client_prepare_req (net/9p/client.c:625) [ 47.992646][ C1] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 47.992846][ C1] ? __debug_check_no_obj_freed (lib/debugobjects.c:1000) [ 47.993042][ C1] p9_client_rpc (net/9p/client.c:688 (discriminator 4)) [ 47.993202][ C1] ? __pfx___debug_check_no_obj_freed (lib/debugobjects.c:960) [ 47.993497][ C1] ? __pfx_p9_client_rpc (net/9p/client.c:672) [ 47.993661][ C1] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 47.993865][ C1] ? kmem_cache_free (mm/slub.c:4280 mm/slub.c:4344) [ 47.994021][ C1] ? p9_req_put (net/9p/client.c:410) [ 47.994294][ C1] ? trace_kfree (./include/trace/events/kmem.h:94 (discriminator 52)) [ 47.994452][ C1] ? kfree (mm/slub.c:4379) [ 47.994574][ C1] p9_client_open (net/9p/client.c:1232) [ 47.994732][ C1] ? __pfx_p9_client_open (net/9p/client.c:1217) [ 47.994992][ C1] ? v9fs_fid_lookup_with_uid (fs/9p/fid.c:181) [ 47.995158][ C1] v9fs_file_open (fs/9p/vfs_file.c:71) [ 47.995327][ C1] ? __pfx_v9fs_file_open (fs/9p/vfs_file.c:41) [ 47.995485][ C1] ? do_dentry_open (fs/open.c:912) [ 47.995749][ C1] do_dentry_open (fs/open.c:955) [ 47.995913][ C1] ? __pfx_v9fs_file_open (fs/9p/vfs_file.c:41) [ 47.996072][ C1] ? backing_file_open (fs/backing-file.c:44) [ 47.996235][ C1] backing_file_open (fs/backing-file.c:45) [ 47.996393][ C1] ? inode_owner_or_capable (./include/linux/mnt_idmapping.h:81 fs/inode.c:2381) [ 47.996654][ C1] ovl_open_realfile (fs/overlayfs/file.c:54) [ 47.996815][ C1] ovl_open (fs/overlayfs/file.c:169) [ 47.996952][ C1] ? __pfx_ovl_open (fs/overlayfs/file.c:146) [ 47.997127][ C1] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 47.997387][ C1] ? do_dentry_open (fs/open.c:912) [ 47.997548][ C1] do_dentry_open (fs/open.c:955) [ 47.997706][ C1] ? __pfx_ovl_open (fs/overlayfs/file.c:146) [ 47.997870][ C1] ? may_open (fs/namei.c:3270) [ 47.997991][ C1] do_open (fs/namei.c:3643) [ 47.998212][ C1] path_openat (fs/namei.c:3799) [ 47.998369][ C1] ? __pfx_path_openat (fs/namei.c:3781) [ 47.998538][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 47.998696][ C1] do_filp_open (fs/namei.c:3826) [ 47.998954][ C1] ? __pfx_do_filp_open (fs/namei.c:3820) [ 47.999114][ C1] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 47.999272][ C1] ? __pfx_kfree_link (fs/libfs.c:1573) [ 47.999431][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 47.999689][ C1] ? alloc_fd (fs/file.c:555 (discriminator 10)) [ 47.999810][ C1] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) [ 47.999967][ C1] ? alloc_fd (fs/file.c:555 (discriminator 10)) [ 48.000092][ C1] do_sys_openat2 (fs/open.c:1406) [ 48.000250][ C1] ? __pfx_do_sys_openat2 (fs/open.c:1392) [ 48.000510][ C1] ? __pfx___debug_check_no_obj_freed (lib/debugobjects.c:960) [ 48.000704][ C1] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:896 ./include/linux/mmzone.h:2029 arch/x86/mm/physaddr.c:65) [ 48.000862][ C1] __x64_sys_openat (fs/open.c:1432) [ 48.001032][ C1] ? __pfx___x64_sys_openat (fs/open.c:1432) [ 48.001292][ C1] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 48.001449][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 48.001646][ C1] RIP: 0033:0x7f0d85d9f0e8 [ 48.001810][ C1] Code: f9 41 89 f0 41 83 e2 40 75 30 89 f0 25 00 00 41 00 3d 00 00 41 00 74 22 44 89 c2 4c 89 ce bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 30 c3 0f 1f 80 00 00 00 00 48 8d 44 24 08 c7 All code ======== 0: f9 stc 1: 41 89 f0 mov %esi,%r8d 4: 41 83 e2 40 and $0x40,%r10d 8: 75 30 jne 0x3a a: 89 f0 mov %esi,%eax c: 25 00 00 41 00 and $0x410000,%eax 11: 3d 00 00 41 00 cmp $0x410000,%eax 16: 74 22 je 0x3a 18: 44 89 c2 mov %r8d,%edx 1b: 4c 89 ce mov %r9,%rsi 1e: bf 9c ff ff ff mov $0xffffff9c,%edi 23: b8 01 01 00 00 mov $0x101,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 30 ja 0x62 32: c3 ret 33: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 3a: 48 8d 44 24 08 lea 0x8(%rsp),%rax 3f: c7 .byte 0xc7 Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 30 ja 0x38 8: c3 ret 9: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 10: 48 8d 44 24 08 lea 0x8(%rsp),%rax 15: c7 .byte 0xc7 [ 48.002578][ C1] RSP: 002b:00007ffda0104d88 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 [ 48.002819][ C1] RAX: ffffffffffffffda RBX: 00007ffda010500f RCX: 00007f0d85d9f0e8 [ 48.003058][ C1] RDX: 0000000000080000 RSI: 00007ffda0104e00 RDI: 00000000ffffff9c [ 48.003291][ C1] RBP: 00007ffda0104df0 R08: 0000000000080000 R09: 00007ffda0104e00 [ 48.003625][ C1] R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffda0104e07 Finger prints: dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage