====================================== | [ 44.877789][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 44.878057][ C3] | [ 44.878166][ C3] | [ 44.878166][ C3] stack backtrace: [ 44.878908][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.879390][ C3] Call Trace: [ 44.879553][ C3] [ 44.879674][ C3] dump_stack_lvl (lib/dump_stack.c:117) [ 44.880043][ C3] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 44.880315][ C3] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 44.880586][ C3] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 44.880942][ C3] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 44.881156][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 44.881376][ C3] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 44.881598][ C3] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 44.881749][ C3] ? stack_trace_save (kernel/stacktrace.c:123) [ 44.881978][ C3] ? add_chain_cache (kernel/locking/lockdep.c:3730) [ 44.882121][ C3] ? save_trace (kernel/locking/lockdep.c:586) [ 44.882263][ C3] mark_lock (kernel/locking/lockdep.c:4678) [ 44.882371][ C3] mark_usage (kernel/locking/lockdep.c:4567) [ 44.882564][ C3] __lock_acquire (kernel/locking/lockdep.c:5091) [ 44.882707][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 44.882847][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 44.883095][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 44.883325][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 44.883538][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 44.883678][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 44.883819][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 44.884116][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 44.884257][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 44.884470][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 44.884617][ C3] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 44.884912][ C3] br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 44.885125][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 44.885370][ C3] call_timer_fn (kernel/time/timer.c:1793) [ 44.885594][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 44.885734][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 44.885874][ C3] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 44.886019][ C3] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 44.886134][ C3] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 44.886360][ C3] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 44.886607][ C3] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 44.886750][ 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) [ 44.886975][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 44.887115][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 44.887255][ C3] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 44.887402][ C3] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 44.887546][ C3] __do_softirq (kernel/softirq.c:554) [ 44.887772][ C3] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 44.887879][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 44.888020][ C3] [ 44.888093][ C3] [ 44.888167][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 44.888434][ C3] RIP: 0010:__d_lookup_rcu (fs/dcache.c:2171) [ 44.888581][ C3] Code: 04 24 e8 13 1a f5 ff 48 8b 04 24 eb aa 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <66> 0f 1f 00 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 41 57 41 All code ======== 0: 04 24 add $0x24,%al 2: e8 13 1a f5 ff call 0xfffffffffff51a1a 7: 48 8b 04 24 mov (%rsp),%rax b: eb aa jmp 0xffffffffffffffb7 d: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1) 14: 00 00 00 00 18: 66 90 xchg %ax,%ax 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 90 nop 27: 90 nop 28: 90 nop 29: 90 nop 2a:* 66 0f 1f 00 nopw (%rax) <-- trapping instruction 2e: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 33: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 3a: fc ff df 3d: 41 57 push %r15 3f: 41 rex.B Code starting with the faulting instruction =========================================== 0: 66 0f 1f 00 nopw (%rax) 4: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 9: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 10: fc ff df 13: 41 57 push %r15 15: 41 rex.B [ 44.889171][ C3] RSP: 0018:ffffc9000075f9e0 EFLAGS: 00000202 [ 44.889352][ C3] RAX: 0000000000000000 RBX: ffff888006544665 RCX: 00000000b41335e0 [ 44.889563][ C3] RDX: ffffc9000075fc74 RSI: ffffc9000075fc40 RDI: ffff8880015ccba0 [ 44.889864][ C3] RBP: ffffc9000075fc30 R08: 0000000000000000 R09: 8080808080808080 [ 44.890076][ C3] R10: fefefefefefefeff R11: d0918a8dd08d9e89 R12: ffffc9000075fc80 [ 44.890290][ C3] R13: ffff8880015ccba0 R14: ffffc9000075fc68 R15: 0000000000000003 [ 44.890588][ C3] lookup_fast (fs/namei.c:1627) [ 44.890696][ C3] walk_component (fs/namei.c:2000) [ 44.890836][ C3] link_path_walk.part.0.constprop.0 (fs/namei.c:2331) [ 44.891017][ C3] ? __pfx_link_path_walk.part.0.constprop.0 (fs/namei.c:2249) [ 44.891280][ C3] path_openat (fs/namei.c:3795) [ 44.891422][ C3] ? __pfx_path_openat (fs/namei.c:3781) [ 44.891574][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 44.891722][ C3] do_filp_open (fs/namei.c:3826) [ 44.891946][ C3] ? __pfx_do_filp_open (fs/namei.c:3820) [ 44.892087][ C3] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 44.892229][ 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) [ 44.892368][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 44.892599][ C3] ? alloc_fd (fs/file.c:555 (discriminator 10)) [ 44.892708][ C3] ? 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) [ 44.892850][ C3] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) [ 44.892990][ C3] ? alloc_fd (fs/file.c:555 (discriminator 10)) [ 44.893099][ C3] do_sys_openat2 (fs/open.c:1406) [ 44.893324][ C3] ? __pfx_do_sys_openat2 (fs/open.c:1392) [ 44.893465][ C3] ? __pfx___do_sys_newfstatat (fs/stat.c:464) [ 44.893609][ C3] __x64_sys_openat (fs/open.c:1432) [ 44.893755][ C3] ? __pfx___x64_sys_openat (fs/open.c:1432) [ 44.893986][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 44.894128][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 44.894303][ C3] RIP: 0033:0x7f35a68a152c [ 44.894448][ C3] Code: 24 18 31 c0 41 83 e2 40 75 44 89 f0 25 00 00 41 00 3d 00 00 41 00 74 36 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 44 48 8b 54 24 18 64 48 2b 14 25 28 00 00 00 All code ======== 0: 24 18 and $0x18,%al 2: 31 c0 xor %eax,%eax 4: 41 83 e2 40 and $0x40,%r10d 8: 75 44 jne 0x4e 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 36 je 0x4e 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 44 ja 0x76 32: 48 8b 54 24 18 mov 0x18(%rsp),%rdx 37: 64 48 2b 14 25 28 00 sub %fs:0x28,%rdx 3e: 00 00 Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 44 ja 0x4c 8: 48 8b 54 24 18 mov 0x18(%rsp),%rdx d: 64 48 2b 14 25 28 00 sub %fs:0x28,%rdx 14: 00 00 [ 44.895037][ C3] RSP: 002b:00007fffe0b5b220 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 [ 44.895338][ C3] RAX: ffffffffffffffda RBX: 00007fffe0b5d400 RCX: 00007f35a68a152c [ 44.895547][ C3] RDX: 0000000000090800 RSI: 00000000004711e7 RDI: 00000000ffffff9c [ 44.895757][ C3] RBP: 00007fffe0b629bb R08: 0000000000090800 R09: 00000000004711e7 [ 44.896051][ C3] R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000006 Finger prints: dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage