====================================== | [ 48.834411][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 48.834596][ C2] | [ 48.834669][ C2] | [ 48.834669][ C2] stack backtrace: [ 48.835067][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 48.835469][ C2] Call Trace: [ 48.835576][ C2] <IRQ> [ 48.835650][ C2] dump_stack_lvl (lib/dump_stack.c:117) [ 48.835822][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 48.835999][ C2] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) [ 48.836231][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 48.836408][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 48.836549][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 48.836693][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 48.836923][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 48.837067][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 48.837223][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [ 48.837370][ C2] ? save_trace (kernel/locking/lockdep.c:586) [ 48.837520][ C2] mark_lock (kernel/locking/lockdep.c:4678) [ 48.837628][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [ 48.837768][ C2] mark_usage (kernel/locking/lockdep.c:4567) [ 48.837877][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) [ 48.838021][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 48.838162][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) [ 48.838309][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 48.838447][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) [ 48.838586][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 48.838810][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 48.838949][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) [ 48.839089][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 48.839227][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) [ 48.839448][ C2] _raw_write_lock (./include/linux/rwlock_api_smp.h:210 kernel/locking/spinlock.c:300) [ 48.839594][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) [ 48.839732][ C2] addrconf_rs_timer (net/ipv6/addrconf.c:4023) [ 48.839871][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 48.840099][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) [ 48.840240][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 48.840383][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 48.840554][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 48.840697][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) [ 48.840922][ C2] call_timer_fn (kernel/time/timer.c:1793) [ 48.841066][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 48.841206][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 48.841344][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 48.841485][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 48.841595][ C2] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 48.841736][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) [ 48.841879][ C2] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 48.842021][ C2] ? 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) [ 48.842171][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 48.842312][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 48.842453][ C2] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 48.842594][ C2] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 48.842819][ C2] __do_softirq (kernel/softirq.c:554) [ 48.842959][ C2] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 48.843064][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 48.843203][ C2] </IRQ> [ 48.843292][ C2] <TASK> [ 48.843447][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 48.843628][ C2] RIP: 0010:__d_lookup_rcu (./include/linux/rculist_bl.h:24 fs/dcache.c:2201) [ 48.843778][ C2] Code: c0 74 08 3c 03 0f 8e a7 02 00 00 f6 45 00 02 0f 85 7f 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 80 3c 02 00 <0f> 85 ce 02 00 00 4c 8b 3b e8 d2 8e ed 01 85 c0 0f 85 ca 01 00 00 All code ======== 0: c0 74 08 3c 03 shlb $0x3,0x3c(%rax,%rcx,1) 5: 0f 8e a7 02 00 00 jle 0x2b2 b: f6 45 00 02 testb $0x2,0x0(%rbp) f: 0f 85 7f 02 00 00 jne 0x294 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 89 da mov %rbx,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 2a:* 0f 85 ce 02 00 00 jne 0x2fe <-- trapping instruction 30: 4c 8b 3b mov (%rbx),%r15 33: e8 d2 8e ed 01 call 0x1ed8f0a 38: 85 c0 test %eax,%eax 3a: 0f 85 ca 01 00 00 jne 0x20a Code starting with the faulting instruction =========================================== 0: 0f 85 ce 02 00 00 jne 0x2d4 6: 4c 8b 3b mov (%rbx),%r15 9: e8 d2 8e ed 01 call 0x1ed8ee0 e: 85 c0 test %eax,%eax 10: 0f 85 ca 01 00 00 jne 0x1e0 [ 48.844364][ C2] RSP: 0018:ffffc900007cf978 EFLAGS: 00000246 [ 48.844545][ C2] RAX: dffffc0000000000 RBX: ffff888035f3c3a8 RCX: 000000000000000f [ 48.844860][ C2] RDX: 1ffff11006be7875 RSI: ffffc900007cfc40 RDI: ffffc900007cfc48 [ 48.845075][ C2] RBP: ffff88800143aba0 R08: 0000000000000000 R09: 8080808080808080 [ 48.845283][ C2] R10: fefefefefefefeff R11: 9398d0cbc99d9693 R12: ffffc900007cfc40 [ 48.845496][ C2] R13: ffff88800143aba0 R14: ffffc900007cfc68 R15: 0000000000000005 [ 48.845708][ C2] ? __pfx_make_vfsuid (fs/mnt_idmapping.c:73) [ 48.845862][ C2] lookup_fast (fs/namei.c:1627) [ 48.845969][ C2] walk_component (fs/namei.c:2000) [ 48.846109][ C2] link_path_walk.part.0.constprop.0 (fs/namei.c:2331) [ 48.846286][ C2] ? __pfx_link_path_walk.part.0.constprop.0 (fs/namei.c:2249) [ 48.846462][ C2] path_openat (fs/namei.c:3795) [ 48.846609][ C2] ? __pfx_path_openat (fs/namei.c:3781) [ 48.846750][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 48.846891][ C2] do_filp_open (fs/namei.c:3826) [ 48.847037][ C2] ? __pfx_do_filp_open (fs/namei.c:3820) [ 48.847177][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 48.847407][ C2] ? 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) [ 48.847547][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 48.847685][ C2] ? alloc_fd (fs/file.c:555 (discriminator 10)) [ 48.847792][ C2] ? 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) [ 48.848019][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) [ 48.848157][ C2] ? alloc_fd (fs/file.c:555 (discriminator 10)) [ 48.848270][ C2] do_sys_openat2 (fs/open.c:1406) [ 48.848414][ C2] ? __pfx_do_sys_openat2 (fs/open.c:1392) [ 48.848556][ C2] ? user_path_at_empty (fs/namei.c:2925) [ 48.848780][ C2] __x64_sys_openat (fs/open.c:1432) [ 48.848924][ C2] ? __pfx___x64_sys_openat (fs/open.c:1432) [ 48.849061][ C2] ? __pfx_do_faccessat (fs/open.c:465) [ 48.849202][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 48.849512][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 48.849685][ C2] RIP: 0033:0x7fb04e5500e8 [ 48.849841][ C2] 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 [ 48.850429][ C2] RSP: 002b:00007ffc8d151bd8 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 [ 48.850660][ C2] RAX: ffffffffffffffda RBX: 00007ffc8d151e6f RCX: 00007fb04e5500e8 [ 48.850966][ C2] RDX: 0000000000080000 RSI: 00007ffc8d151c50 RDI: 00000000ffffff9c [ 48.851183][ C2] RBP: 00007ffc8d151c40 R08: 0000000000080000 R09: 00007ffc8d151c50 [ 48.851392][ C2] R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffc8d151c57 Finger prints: dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage