====================================== | [ 37.793715][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 37.793947][ C0] | [ 37.794029][ C0] | [ 37.794029][ C0] stack backtrace: [ 37.794558][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 37.794908][ C0] Call Trace: [ 37.795130][ C0] [ 37.795213][ C0] dump_stack_lvl (lib/dump_stack.c:117) [ 37.795375][ C0] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 37.795575][ C0] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 37.795780][ C0] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 37.795948][ C0] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 37.796110][ C0] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 37.796272][ C0] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 37.796431][ C0] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 37.796797][ C0] ? stack_trace_save (kernel/stacktrace.c:123) [ 37.796964][ C0] ? save_trace (kernel/locking/lockdep.c:586) [ 37.797129][ C0] mark_lock (kernel/locking/lockdep.c:4678) [ 37.797252][ C0] mark_usage (kernel/locking/lockdep.c:4567) [ 37.797372][ C0] __lock_acquire (kernel/locking/lockdep.c:5091) [ 37.797753][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 37.797922][ C0] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) [ 37.798081][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 37.798240][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 37.798497][ C0] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) [ 37.798657][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 37.798815][ C0] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) [ 37.798972][ C0] _raw_read_lock_bh (./include/linux/rwlock_api_smp.h:177 kernel/locking/spinlock.c:252) [ 37.799256][ C0] ? ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) [ 37.799413][ C0] ipv6_get_lladdr (net/ipv6/addrconf.c:1911 net/ipv6/addrconf.c:1934) [ 37.799569][ C0] ndisc_send_ns (net/ipv6/ndisc.c:658) [ 37.799729][ C0] ? __pfx_ndisc_send_ns (net/ipv6/ndisc.c:653) [ 37.799889][ C0] ? __ipv6_chk_addr_and_flags (net/ipv6/addrconf.c:2009) [ 37.800086][ C0] ndisc_solicit (net/ipv6/ndisc.c:736) [ 37.800280][ C0] ? __pfx_ndisc_solicit (net/ipv6/ndisc.c:736) [ 37.800451][ C0] ? neigh_probe (net/core/neighbour.c:1074) [ 37.800626][ C0] neigh_probe (net/core/neighbour.c:1075) [ 37.800753][ C0] neigh_timer_handler (net/core/neighbour.c:1163) [ 37.800934][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 37.801102][ C0] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1083) [ 37.801259][ C0] call_timer_fn (kernel/time/timer.c:1793) [ 37.801516][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 37.801671][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 37.801844][ C0] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 37.802000][ C0] ? 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) [ 37.802274][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 37.802432][ C0] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 37.802589][ C0] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1083) [ 37.802746][ C0] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 37.802908][ C0] ? 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) [ 37.803067][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 37.803227][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 37.803394][ C0] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 37.803553][ C0] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 37.803710][ C0] __do_softirq (kernel/softirq.c:554) [ 37.803868][ C0] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 37.803990][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 37.804148][ C0] [ 37.804235][ C0] [ 37.804419][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 37.804617][ C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) [ 37.804827][ C0] 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 2f 79 <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 2f 79 decl %gs:0x792fbf05(%rip) # 0x792fbf2f 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 [ 37.805510][ C0] RSP: 0018:ffffc9000069f578 EFLAGS: 00000286 [ 37.805719][ C0] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff13e596e [ 37.805971][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff86d40911 [ 37.806208][ C0] RBP: ffff888001041080 R08: 0000000000000001 R09: fffffbfff13e38a9 [ 37.806442][ C0] R10: ffffffff89f1c54f R11: 0000000000001000 R12: ffff8880070cc000 [ 37.806678][ C0] R13: 0000000000000000 R14: ffffc9000069f5c8 R15: ffff888006e31000 [ 37.806930][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 37.807143][ C0] qlist_free_all (mm/kasan/quarantine.c:174) [ 37.807435][ C0] ? p9pdu_vreadf (./include/linux/slab.h:632 net/9p/protocol.c:313) [ 37.807594][ C0] kasan_quarantine_reduce (./include/linux/srcu.h:285 mm/kasan/quarantine.c:287) [ 37.807752][ C0] __kasan_slab_alloc (mm/kasan/common.c:322) [ 37.807912][ C0] __kmalloc (mm/slub.c:3799 mm/slub.c:3845 mm/slub.c:3965 mm/slub.c:3979) [ 37.808067][ C0] p9pdu_vreadf (./include/linux/slab.h:632 net/9p/protocol.c:313) [ 37.808362][ C0] ? trace_9p_client_res (./include/trace/events/9p.h:146 (discriminator 52)) [ 37.808534][ C0] ? p9_client_rpc (net/9p/client.c:755) [ 37.808712][ C0] ? __pfx_p9pdu_vreadf (net/9p/protocol.c:260) [ 37.808891][ C0] ? __pfx_p9_client_rpc (net/9p/client.c:672) [ 37.809048][ C0] p9pdu_readf (net/9p/protocol.c:696) [ 37.809169][ C0] ? __pfx_p9pdu_readf (net/9p/protocol.c:696) [ 37.809328][ C0] ? __pfx_v9fs_fid_find (fs/9p/fid.c:114) [ 37.809486][ C0] ? __pfx_make_vfsgid (fs/mnt_idmapping.c:110) [ 37.809742][ C0] ? v9fs_fid_add (fs/9p/fid.c:41) [ 37.809911][ C0] p9_client_readlink (net/9p/client.c:2242) [ 37.810069][ C0] v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:822 fs/9p/vfs_inode_dotl.c:806) [ 37.810229][ C0] ? __pfx_v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:809) [ 37.810527][ C0] ? __lookup_slow (fs/namei.c:1692) [ 37.810684][ C0] pick_link (fs/namei.c:1808) [ 37.810802][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 37.810976][ C0] step_into (fs/namei.c:1874) [ 37.811095][ C0] ? __up_read (./arch/x86/include/asm/atomic64_64.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2749 ./include/linux/atomic/atomic-long.h:184 ./include/linux/atomic/atomic-instrumented.h:3317 kernel/locking/rwsem.c:1347) [ 37.811351][ C0] ? __pfx_step_into (fs/namei.c:1839) [ 37.811508][ C0] ? walk_component (fs/namei.c:2005) [ 37.811669][ C0] link_path_walk.part.0.constprop.0 (fs/namei.c:2331) [ 37.811871][ C0] ? __pfx_link_path_walk.part.0.constprop.0 (fs/namei.c:2249) [ 37.812166][ C0] path_openat (fs/namei.c:3795) [ 37.812323][ C0] ? __pfx_path_openat (fs/namei.c:3781) [ 37.812479][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 37.812637][ C0] do_filp_open (fs/namei.c:3826) [ 37.812798][ C0] ? __pfx_do_filp_open (fs/namei.c:3820) [ 37.812954][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 37.813114][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 37.813272][ C0] ? alloc_fd (fs/file.c:555 (discriminator 10)) [ 37.813391][ C0] ? 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) [ 37.813647][ C0] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) [ 37.813811][ C0] ? alloc_fd (fs/file.c:555 (discriminator 10)) [ 37.813931][ C0] do_sys_openat2 (fs/open.c:1406) [ 37.814087][ C0] ? vfs_fstatat (fs/stat.c:308) [ 37.814345][ C0] ? __pfx_do_sys_openat2 (fs/open.c:1392) [ 37.814501][ C0] ? __pfx___do_sys_newfstatat (fs/stat.c:464) [ 37.814659][ C0] __x64_sys_openat (fs/open.c:1432) [ 37.814817][ C0] ? __pfx___x64_sys_openat (fs/open.c:1432) [ 37.815076][ C0] ? __pfx_do_faccessat (fs/open.c:465) [ 37.815236][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 37.815393][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 37.815588][ C0] RIP: 0033:0x7f509c6f50e8 [ 37.815873][ C0] 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 [ 37.816484][ C0] RSP: 002b:00007fff6bc5c1c8 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 [ 37.816845][ C0] RAX: ffffffffffffffda RBX: 00007fff6bc5c45f RCX: 00007f509c6f50e8 [ 37.817101][ C0] RDX: 0000000000080000 RSI: 00007fff6bc5c240 RDI: 00000000ffffff9c [ 37.817358][ C0] RBP: 00007fff6bc5c230 R08: 0000000000080000 R09: 00007fff6bc5c240 [ 37.817738][ C0] R10: 0000000000000000 R11: 0000000000000287 R12: 00007fff6bc5c247 Finger prints: dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage