====================================== | [ 30.044066][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 30.044264][ C2] | [ 30.044344][ C2] | [ 30.044344][ C2] stack backtrace: [ 30.044867][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 30.045211][ C2] Call Trace: [ 30.045336][ C2] <IRQ> [ 30.045420][ C2] dump_stack_lvl (lib/dump_stack.c:117) [ 30.045786][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 30.045979][ C2] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) [ 30.046137][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 30.046430][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 30.046587][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 30.046743][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 30.046900][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 30.047058][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 30.047316][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [ 30.047473][ C2] ? save_trace (kernel/locking/lockdep.c:586) [ 30.047630][ C2] mark_lock (kernel/locking/lockdep.c:4678) [ 30.047750][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [ 30.048006][ C2] mark_usage (kernel/locking/lockdep.c:4567) [ 30.048125][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) [ 30.048283][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 30.048438][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) [ 30.048597][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 30.048852][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) [ 30.049016][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 30.049173][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 30.049328][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) [ 30.049583][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 30.049739][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) [ 30.049900][ C2] _raw_write_lock (./include/linux/rwlock_api_smp.h:210 kernel/locking/spinlock.c:300) [ 30.050064][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) [ 30.050318][ C2] addrconf_rs_timer (net/ipv6/addrconf.c:4023) [ 30.050473][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 30.050630][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) [ 30.050785][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 30.051039][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 30.051197][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 30.051353][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) [ 30.051508][ C2] call_timer_fn (kernel/time/timer.c:1793) [ 30.051665][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 30.051920][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 30.052075][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 30.052230][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 30.052353][ C2] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 30.052607][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) [ 30.052764][ C2] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 30.052920][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 30.053079][ 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) [ 30.053335][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 30.053493][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 30.053649][ C2] ? timer_expire_remote (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2181) [ 30.053805][ C2] timer_expire_remote (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2181) [ 30.053962][ C2] tmigr_handle_remote_cpu (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:67 ./arch/x86/include/asm/irqflags.h:127 kernel/time/timer_migration.c:925) [ 30.054219][ C2] ? __pfx_tmigr_handle_remote_cpu (kernel/time/timer_migration.c:869) [ 30.054417][ C2] tmigr_handle_remote_up (kernel/time/timer_migration.c:1003) [ 30.054583][ C2] tmigr_handle_remote (kernel/time/timer_migration.c:488 kernel/time/timer_migration.c:1061) [ 30.054739][ C2] ? __pfx_tmigr_handle_remote (kernel/time/timer_migration.c:1026) [ 30.054998][ C2] __do_softirq (kernel/softirq.c:554) [ 30.055156][ C2] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 30.055275][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 30.055432][ C2] </IRQ> [ 30.055512][ C2] <TASK> [ 30.055691][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 30.055885][ C2] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) [ 30.056087][ C2] Code: 10 e8 81 21 79 fd 48 89 ef e8 b9 91 79 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 7b 0d 7c <74> 0e 5b 5d c3 cc cc cc cc e8 0f f0 9c fd eb dc 0f 1f 44 00 00 5b All code ======== 0: 10 e8 adc %ch,%al 2: 81 21 79 fd 48 89 andl $0x8948fd79,(%rcx) 8: ef out %eax,(%dx) 9: e8 b9 91 79 fd call 0xfffffffffd7991c7 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 7b 0d 7c decl %gs:0x7c0d7bf5(%rip) # 0x7c0d7c1f 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 0f f0 9c fd call 0xfffffffffd9cf047 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 0f f0 9c fd call 0xfffffffffd9cf01d e: eb dc jmp 0xffffffffffffffec 10: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 15: 5b pop %rbx [ 30.056742][ C2] RSP: 0018:ffffc900007df440 EFLAGS: 00000282 [ 30.056947][ C2] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff0b722d9 [ 30.057280][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83f64de1 [ 30.057512][ C2] RBP: ffff888001041080 R08: 0000000000000001 R09: fffffbfff0b72b5a [ 30.057743][ C2] R10: ffffffff85b95ad7 R11: 0000000000001000 R12: ffff888001041080 [ 30.058180][ C2] R13: ffffea000020c600 R14: ffff8880010433c0 R15: ffff88800831c000 [ 30.058413][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 30.058608][ C2] get_partial_node.part.0 (mm/slub.c:2623) [ 30.058868][ C2] ___slab_alloc (mm/slub.c:2583 mm/slub.c:2701 mm/slub.c:3505) [ 30.059023][ C2] ? fs_reclaim_acquire (mm/page_alloc.c:3715 mm/page_alloc.c:3706) [ 30.059181][ C2] ? p9_fcall_init (net/9p/client.c:232) [ 30.059337][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 30.059595][ C2] ? p9_fcall_init (net/9p/client.c:232) [ 30.059751][ C2] ? __kmalloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3965 mm/slub.c:3979) [ 30.059911][ C2] __kmalloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3965 mm/slub.c:3979) [ 30.060030][ C2] p9_fcall_init (net/9p/client.c:232) [ 30.060188][ C2] p9_tag_alloc (net/9p/client.c:295) [ 30.060444][ C2] ? __pfx_p9_tag_alloc (net/9p/client.c:277) [ 30.060599][ C2] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 30.060755][ C2] ? 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) [ 30.060910][ C2] p9_client_prepare_req (net/9p/client.c:641) [ 30.061165][ C2] ? 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) [ 30.061319][ C2] ? __pfx_p9_client_prepare_req (net/9p/client.c:625) [ 30.061515][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 30.061671][ C2] p9_client_rpc (net/9p/client.c:688 (discriminator 4)) [ 30.061930][ C2] ? __pfx_p9_client_rpc (net/9p/client.c:672) [ 30.062084][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 30.062239][ C2] ? list_lru_add (mm/list_lru.c:106) [ 30.062395][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 30.062651][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 30.062807][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 30.062962][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 30.063118][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 30.063276][ C2] p9_client_clunk (net/9p/client.c:1438 (discriminator 3)) [ 30.063530][ C2] v9fs_dentry_release (fs/9p/vfs_dentry.c:54) [ 30.063690][ C2] __dentry_kill (fs/dcache.c:608) [ 30.063846][ C2] ? __pfx_kfree_link (fs/libfs.c:1573) [ 30.064000][ C2] dput.part.0 (fs/dcache.c:845) [ 30.064255][ C2] walk_component (fs/namei.c:562 fs/namei.c:1027 fs/namei.c:2009) [ 30.064412][ C2] link_path_walk.part.0.constprop.0 (fs/namei.c:2328) [ 30.064607][ C2] ? __pfx_link_path_walk.part.0.constprop.0 (fs/namei.c:2249) [ 30.064808][ C2] path_openat (fs/namei.c:3795) [ 30.065063][ C2] ? __pfx_path_openat (fs/namei.c:3781) [ 30.065219][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 30.065376][ C2] do_filp_open (fs/namei.c:3826) [ 30.065531][ C2] ? __pfx_do_filp_open (fs/namei.c:3820) [ 30.065787][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 30.065946][ C2] ? __pfx_kfree_link (fs/libfs.c:1573) [ 30.066102][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 30.066257][ C2] ? alloc_fd (fs/file.c:555 (discriminator 10)) [ 30.066477][ 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) [ 30.066633][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) [ 30.066788][ C2] ? alloc_fd (fs/file.c:555 (discriminator 10)) [ 30.066907][ C2] do_sys_openat2 (fs/open.c:1406) [ 30.067065][ C2] ? vfs_fstatat (fs/stat.c:308) [ 30.067319][ C2] ? __pfx_do_sys_openat2 (fs/open.c:1392) [ 30.067475][ C2] ? __pfx___do_sys_newfstatat (fs/stat.c:464) [ 30.067631][ C2] __x64_sys_openat (fs/open.c:1432) [ 30.067789][ C2] ? __pfx___x64_sys_openat (fs/open.c:1432) [ 30.068044][ C2] ? __pfx_do_faccessat (fs/open.c:465) [ 30.068205][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 30.068360][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 30.068551][ C2] RIP: 0033:0x7f321f2d10e8 [ 30.068814][ 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 [ 30.069364][ C2] RSP: 002b:00007ffddceb57e8 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 [ 30.069698][ C2] RAX: ffffffffffffffda RBX: 00007ffddceb5a7f RCX: 00007f321f2d10e8 [ 30.069943][ C2] RDX: 0000000000080000 RSI: 00007ffddceb5860 RDI: 00000000ffffff9c [ 30.070173][ C2] RBP: 00007ffddceb5850 R08: 0000000000080000 R09: 00007ffddceb5860 [ 30.070605][ C2] R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffddceb5867 Finger prints: dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage