====================================== | [ 51.588674][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 51.588880][ C3] | [ 51.588960][ C3] | [ 51.588960][ C3] stack backtrace: [ 51.589389][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 51.589836][ C3] Call Trace: [ 51.589952][ C3] [ 51.590032][ C3] dump_stack_lvl (lib/dump_stack.c:117) [ 51.590189][ C3] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 51.590389][ C3] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 51.590686][ C3] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 51.590841][ C3] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 51.590995][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 51.591152][ C3] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 51.591408][ C3] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 51.591565][ C3] ? stack_trace_save (kernel/stacktrace.c:123) [ 51.591724][ C3] ? add_chain_cache (kernel/locking/lockdep.c:3730) [ 51.591880][ C3] ? save_trace (kernel/locking/lockdep.c:586) [ 51.592038][ C3] mark_lock (kernel/locking/lockdep.c:4678) [ 51.592157][ C3] mark_usage (kernel/locking/lockdep.c:4567) [ 51.592378][ C3] __lock_acquire (kernel/locking/lockdep.c:5091) [ 51.592533][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 51.592689][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 51.592963][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 51.593117][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 51.593346][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 51.593501][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 51.593751][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 51.593977][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 51.594136][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 51.594369][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 51.594525][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 51.594757][ C3] br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 51.595087][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 51.595353][ C3] call_timer_fn (kernel/time/timer.c:1793) [ 51.595508][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 51.595664][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 51.595819][ C3] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 51.596074][ 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) [ 51.596229][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 51.596386][ C3] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 51.596542][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 51.596912][ C3] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 51.597070][ 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) [ 51.597230][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 51.597387][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 51.597547][ C3] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 51.597804][ C3] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 51.597959][ C3] __do_softirq (kernel/softirq.c:554) [ 51.598113][ C3] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 51.598229][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 51.598383][ C3] [ 51.598462][ C3] [ 51.598542][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 51.598734][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) [ 51.599044][ 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 6f 68 <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 6f 68 decl %gs:0x686faef5(%rip) # 0x686faf1f 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 [ 51.599591][ C3] RSP: 0018:ffffc9000056f5b8 EFLAGS: 00000286 [ 51.599889][ C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff3565d55 [ 51.600126][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff97941921 [ 51.600356][ C3] RBP: ffff88800104f440 R08: 0000000000000001 R09: fffffbfff3563ca9 [ 51.600587][ C3] R10: ffffffff9ab1e54f R11: 0000000000000008 R12: ffff888008b8be08 [ 51.600825][ C3] R13: 0000000000000000 R14: ffffc9000056f608 R15: ffff888004e96008 [ 51.601061][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 51.601256][ C3] qlist_free_all (mm/kasan/quarantine.c:174) [ 51.601413][ C3] ? p9pdu_vreadf (./include/linux/slab.h:632 net/9p/protocol.c:313) [ 51.601568][ C3] kasan_quarantine_reduce (./include/linux/srcu.h:285 mm/kasan/quarantine.c:287) [ 51.601723][ C3] __kasan_slab_alloc (mm/kasan/common.c:322) [ 51.601978][ C3] __kmalloc (mm/slub.c:3799 mm/slub.c:3845 mm/slub.c:3965 mm/slub.c:3979) [ 51.602098][ C3] p9pdu_vreadf (./include/linux/slab.h:632 net/9p/protocol.c:313) [ 51.602252][ C3] ? trace_9p_client_res (./include/trace/events/9p.h:146 (discriminator 52)) [ 51.602413][ C3] ? p9_client_rpc (net/9p/client.c:755) [ 51.602574][ C3] ? __pfx_p9pdu_vreadf (net/9p/protocol.c:260) [ 51.602735][ C3] ? __pfx_p9_client_rpc (net/9p/client.c:672) [ 51.602894][ C3] p9pdu_readf (net/9p/protocol.c:696) [ 51.603014][ C3] ? __pfx_p9pdu_readf (net/9p/protocol.c:696) [ 51.603270][ C3] ? __pfx_v9fs_fid_find (fs/9p/fid.c:114) [ 51.603428][ C3] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 51.603583][ C3] p9_client_readlink (net/9p/client.c:2242) [ 51.603738][ C3] v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:822 fs/9p/vfs_inode_dotl.c:806) [ 51.603894][ C3] ? __pfx_v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:809) [ 51.604088][ C3] ovl_get_link (fs/overlayfs/inode.c:338 fs/overlayfs/inode.c:326) [ 51.604205][ C3] pick_link (fs/namei.c:1808) [ 51.604321][ C3] ? __lock_release (kernel/locking/lockdep.c:5430) [ 51.604475][ C3] ? __d_lookup (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 fs/dcache.c:2328) [ 51.604631][ C3] step_into (fs/namei.c:1874) [ 51.604843][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 51.604997][ C3] ? __pfx_step_into (fs/namei.c:1839) [ 51.605153][ C3] ? __d_lookup (fs/dcache.c:2331) [ 51.605316][ C3] open_last_lookups (fs/namei.c:3589) [ 51.605477][ C3] path_openat (fs/namei.c:3796 (discriminator 1)) [ 51.605637][ C3] ? __pfx_path_openat (fs/namei.c:3781) [ 51.605793][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 51.606051][ C3] do_filp_open (fs/namei.c:3826) [ 51.606207][ C3] ? __pfx_do_filp_open (fs/namei.c:3820) [ 51.606359][ C3] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 51.606518][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 51.606672][ C3] ? alloc_fd (fs/file.c:555 (discriminator 10)) [ 51.606794][ C3] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) [ 51.607052][ C3] ? alloc_fd (fs/file.c:555 (discriminator 10)) [ 51.607170][ C3] do_sys_openat2 (fs/open.c:1406) [ 51.607323][ C3] ? __pfx_do_sys_openat2 (fs/open.c:1392) [ 51.607476][ C3] ? __pfx___debug_check_no_obj_freed (lib/debugobjects.c:960) [ 51.607771][ C3] ? __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) [ 51.607931][ C3] __x64_sys_openat (fs/open.c:1432) [ 51.608089][ C3] ? __pfx___x64_sys_openat (fs/open.c:1432) [ 51.608249][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 51.608407][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 51.608598][ C3] RIP: 0033:0x7efd759930e8 [ 51.608871][ C3] 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 [ 51.609415][ C3] RSP: 002b:00007ffd9e7f8f88 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 [ 51.609651][ C3] RAX: ffffffffffffffda RBX: 00007ffd9e7f920f RCX: 00007efd759930e8 [ 51.610085][ C3] RDX: 0000000000080000 RSI: 00007ffd9e7f9000 RDI: 00000000ffffff9c [ 51.610315][ C3] RBP: 00007ffd9e7f8ff0 R08: 0000000000080000 R09: 00007ffd9e7f9000 [ 51.610545][ C3] R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffd9e7f9007 Finger prints: dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage