====================================== | [ 45.402209][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 45.402395][ C3] | [ 45.402564][ C3] | [ 45.402564][ C3] stack backtrace: [ 45.402974][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.403403][ C3] Call Trace: [ 45.403519][ C3] [ 45.403599][ C3] dump_stack_lvl (lib/dump_stack.c:117) [ 45.403840][ C3] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 45.404029][ C3] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 45.404220][ C3] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 45.404365][ C3] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 45.404609][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 45.404768][ C3] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 45.404923][ C3] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 45.405073][ C3] ? stack_trace_save (kernel/stacktrace.c:123) [ 45.405310][ C3] ? save_trace (kernel/locking/lockdep.c:586) [ 45.405463][ C3] mark_lock (kernel/locking/lockdep.c:4678) [ 45.405671][ C3] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 45.405818][ C3] mark_usage (kernel/locking/lockdep.c:4567) [ 45.405942][ C3] __lock_acquire (kernel/locking/lockdep.c:5091) [ 45.406096][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 45.406245][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 45.406604][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 45.406754][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 45.406978][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 45.407130][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 45.407289][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 45.407593][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 45.407750][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 45.407964][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 45.408107][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 45.408405][ C3] br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 45.408623][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 45.408875][ C3] call_timer_fn (kernel/time/timer.c:1793) [ 45.409115][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 45.409259][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 45.409404][ C3] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 45.409549][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 45.409697][ C3] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 45.409839][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 45.410088][ C3] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 45.410231][ 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) [ 45.410461][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 45.410607][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 45.410754][ C3] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 45.410899][ C3] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 45.411041][ C3] __do_softirq (kernel/softirq.c:554) [ 45.411282][ C3] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 45.411391][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 45.411534][ C3] [ 45.411610][ C3] [ 45.411682][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 45.411860][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) [ 45.412061][ C3] 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 51 <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 51 decl %gs:0x518fbf05(%rip) # 0x518fbf2f 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 [ 45.412696][ C3] RSP: 0018:ffffc900006ef7c8 EFLAGS: 00000286 [ 45.412891][ C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff6064179 [ 45.413120][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffae740911 [ 45.413442][ C3] RBP: ffff888005442008 R08: 0000000000000001 R09: fffffbfff60649fa [ 45.413676][ C3] R10: ffffffffb0324fd7 R11: 0000000000000000 R12: dffffc0000000000 [ 45.413899][ C3] R13: 0000000000000001 R14: 0000000000000282 R15: ffff888005442078 [ 45.414221][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 45.414403][ C3] p9_virtio_request (net/9p/trans_virtio.c:305) [ 45.414557][ C3] ? trace_9p_client_req (./include/trace/events/9p.h:124 (discriminator 52)) [ 45.414807][ C3] ? __pfx_p9_virtio_request (net/9p/trans_virtio.c:256) [ 45.414956][ C3] ? p9_client_prepare_req (net/9p/client.c:625) [ 45.415109][ C3] ? __kasan_kmalloc (mm/kasan/common.c:391) [ 45.415260][ C3] ? __pfx_p9_client_prepare_req (net/9p/client.c:625) [ 45.415540][ C3] ? vfs_statx (fs/stat.c:251) [ 45.415692][ C3] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 45.415883][ C3] p9_client_rpc (net/9p/client.c:703) [ 45.416027][ C3] ? __create_object (mm/kmemleak.c:756) [ 45.416287][ C3] ? __pfx_p9_client_rpc (net/9p/client.c:672) [ 45.416437][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 45.416594][ C3] ? __create_object (mm/kmemleak.c:756) [ 45.416745][ C3] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) [ 45.417006][ C3] p9_client_getattr_dotl (net/9p/client.c:1732) [ 45.417157][ C3] v9fs_vfs_getattr_dotl (fs/9p/vfs_inode_dotl.c:396) [ 45.417308][ C3] ovl_getattr (fs/overlayfs/overlayfs.h:416 fs/overlayfs/inode.c:174) [ 45.417463][ C3] ? __pfx_ovl_getattr (fs/overlayfs/inode.c:159) [ 45.417624][ C3] ? __pfx_kfree_link (fs/libfs.c:1573) [ 45.417775][ C3] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 45.417925][ C3] ? __lock_release (kernel/locking/lockdep.c:5430) [ 45.418171][ C3] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) [ 45.418318][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 45.418471][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 45.418624][ C3] ? vfs_getattr_nosec (fs/stat.c:112) [ 45.418775][ C3] vfs_statx (fs/stat.c:251) [ 45.418892][ C3] ? __pfx_vfs_statx (fs/stat.c:234) [ 45.419041][ C3] ? getname_flags (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 fs/namei.c:190) [ 45.419189][ C3] vfs_fstatat (fs/stat.c:305) [ 45.419399][ C3] __do_sys_newfstatat (fs/stat.c:469) [ 45.419551][ C3] ? __pfx___do_sys_newfstatat (fs/stat.c:464) [ 45.419708][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 45.419902][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 45.420150][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 45.420335][ C3] RIP: 0033:0x7f2e751bceee [ 45.420486][ C3] Code: 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 07 00 00 00 0f 1f 80 00 00 00 00 f3 0f 1e fa 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 0b 31 c0 c3 0f 1f 84 00 00 00 00 00 48 8b 15 d9 All code ======== 0: 48 89 f2 mov %rsi,%rdx 3: b9 00 01 00 00 mov $0x100,%ecx 8: 48 89 fe mov %rdi,%rsi b: bf 9c ff ff ff mov $0xffffff9c,%edi 10: e9 07 00 00 00 jmp 0x1c 15: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 1c: f3 0f 1e fa endbr64 20: 41 89 ca mov %ecx,%r10d 23: b8 06 01 00 00 mov $0x106,%eax 28: 0f 05 syscall 2a:* 3d 00 f0 ff ff cmp $0xfffff000,%eax <-- trapping instruction 2f: 77 0b ja 0x3c 31: 31 c0 xor %eax,%eax 33: c3 ret 34: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 3b: 00 3c: 48 rex.W 3d: 8b .byte 0x8b 3e: 15 .byte 0x15 3f: d9 .byte 0xd9 Code starting with the faulting instruction =========================================== 0: 3d 00 f0 ff ff cmp $0xfffff000,%eax 5: 77 0b ja 0x12 7: 31 c0 xor %eax,%eax 9: c3 ret a: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 11: 00 12: 48 rex.W 13: 8b .byte 0x8b 14: 15 .byte 0x15 15: d9 .byte 0xd9 [ 45.421008][ C3] RSP: 002b:00007fff77b6e538 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 [ 45.421350][ C3] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f2e751bceee [ 45.421570][ C3] RDX: 00007fff77b6e540 RSI: 0000564da2b1cc60 RDI: 00000000ffffff9c [ 45.421793][ C3] RBP: 0000564da2b1cc60 R08: 00007fff77b6e748 R09: 0000564da2b1cad2 [ 45.422023][ C3] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 Finger prints: dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage