====================================== | [ 27.197697][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 27.197990][ C2] | [ 27.198104][ C2] | [ 27.198104][ C2] stack backtrace: [ 27.198715][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 27.199211][ C2] Call Trace: [ 27.199397][ C2] [ 27.199524][ C2] dump_stack_lvl (lib/dump_stack.c:117) [ 27.199770][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 27.200061][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 27.200345][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 27.200563][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 27.200789][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 27.201013][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 27.201243][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 27.201461][ C2] ? stack_trace_save (kernel/stacktrace.c:123) [ 27.201683][ C2] ? add_chain_cache (kernel/locking/lockdep.c:3730) [ 27.201903][ C2] ? save_trace (kernel/locking/lockdep.c:586) [ 27.202120][ C2] mark_lock (kernel/locking/lockdep.c:4678) [ 27.202284][ C2] mark_usage (kernel/locking/lockdep.c:4567) [ 27.202449][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) [ 27.202669][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 27.202890][ C2] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) [ 27.203156][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 27.203373][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) [ 27.203650][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 27.203865][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 27.204085][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) [ 27.204365][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 27.204597][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) [ 27.204882][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 27.205098][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) [ 27.205372][ C2] br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) [ 27.205640][ C2] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) [ 27.205907][ C2] call_timer_fn (kernel/time/timer.c:1793) [ 27.206127][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 27.206347][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 27.206628][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 27.206779][ 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) [ 27.206925][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 27.207072][ C2] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 27.207214][ C2] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) [ 27.207388][ C2] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 27.207532][ 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) [ 27.207761][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 27.207904][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 27.208045][ C2] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 27.208187][ C2] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 27.208410][ C2] __do_softirq (kernel/softirq.c:554) [ 27.208563][ C2] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 27.208669][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 27.208811][ C2] [ 27.208884][ C2] [ 27.209040][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 27.209216][ C2] RIP: 0010:arch_stack_walk (arch/x86/kernel/stacktrace.c:17) [ 27.209363][ C2] Code: e6 83 eb 8d e6 89 eb b3 e6 82 eb 85 0f 1f 40 00 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 55 <48> 89 e5 41 56 49 89 d6 41 55 49 89 cd 41 54 49 89 f4 53 48 89 fb All code ======== 0: e6 83 out %al,$0x83 2: eb 8d jmp 0xffffffffffffff91 4: e6 89 out %al,$0x89 6: eb b3 jmp 0xffffffffffffffbb 8: e6 82 out %al,$0x82 a: eb 85 jmp 0xffffffffffffff91 c: 0f 1f 40 00 nopl 0x0(%rax) 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 66 0f 1f 00 nopw (%rax) 24: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 29: 55 push %rbp 2a:* 48 89 e5 mov %rsp,%rbp <-- trapping instruction 2d: 41 56 push %r14 2f: 49 89 d6 mov %rdx,%r14 32: 41 55 push %r13 34: 49 89 cd mov %rcx,%r13 37: 41 54 push %r12 39: 49 89 f4 mov %rsi,%r12 3c: 53 push %rbx 3d: 48 89 fb mov %rdi,%rbx Code starting with the faulting instruction =========================================== 0: 48 89 e5 mov %rsp,%rbp 3: 41 56 push %r14 5: 49 89 d6 mov %rdx,%r14 8: 41 55 push %r13 a: 49 89 cd mov %rcx,%r13 d: 41 54 push %r12 f: 49 89 f4 mov %rsi,%r12 12: 53 push %rbx 13: 48 89 fb mov %rdi,%rbx [ 27.210048][ C2] RSP: 0018:ffffc90000cbfa20 EFLAGS: 00000246 [ 27.210225][ C2] RAX: 0000000000000000 RBX: fffff52000197f46 RCX: 0000000000000000 [ 27.210521][ C2] RDX: ffff888005b70040 RSI: ffffc90000cbfa50 RDI: ffffffffac5c8260 [ 27.210732][ C2] RBP: ffffc90000cbfc10 R08: 0000000000000001 R09: fffffbfff63a98aa [ 27.210949][ C2] R10: ffffffffb1d4c557 R11: 0000000000000008 R12: ffff888036143530 [ 27.211240][ C2] R13: ffff88800195aac0 R14: ffffea0000142e00 R15: ffff8880050b9188 [ 27.211450][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) [ 27.211629][ C2] stack_trace_save (kernel/stacktrace.c:123) [ 27.211770][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [ 27.212001][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 27.212141][ C2] set_track_prepare (mm/slub.c:886) [ 27.212284][ C2] ? get_partial_node.part.0 (mm/slub.c:2623) [ 27.212426][ C2] ___slab_alloc (mm/slub.c:917 mm/slub.c:3515) [ 27.212564][ C2] ? kmem_cache_alloc (./include/linux/sched/mm.h:315 mm/slub.c:3746 mm/slub.c:3827 mm/slub.c:3852) [ 27.212702][ C2] ? vm_area_alloc (kernel/fork.c:467) [ 27.212842][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 27.212988][ C2] ? vm_area_alloc (kernel/fork.c:467) [ 27.213127][ C2] ? kmem_cache_alloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3852) [ 27.213266][ C2] kmem_cache_alloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3852) [ 27.213409][ C2] vm_area_alloc (kernel/fork.c:467) [ 27.213549][ C2] mmap_region (mm/mmap.c:2807) [ 27.213770][ C2] ? __pfx_arch_get_unmapped_area_topdown (arch/x86/kernel/sys_x86_64.c:157) [ 27.213949][ C2] ? __pfx_mmap_region (mm/mmap.c:2718) [ 27.214089][ C2] ? get_unmapped_area (mm/mmap.c:1854) [ 27.214230][ C2] do_mmap (mm/mmap.c:1385) [ 27.214336][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 27.214558][ C2] ? do_user_addr_fault (arch/x86/mm/fault.c:1443) [ 27.214701][ C2] vm_mmap_pgoff (mm/util.c:573) [ 27.214843][ C2] ? __pfx_vm_mmap_pgoff (mm/util.c:563) [ 27.214984][ C2] ? do_user_addr_fault (arch/x86/mm/fault.c:1443) [ 27.215206][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 27.215345][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 27.215517][ C2] RIP: 0033:0x7f99c5f68287 [ 27.215661][ C2] Code: c3 66 90 48 89 2b 48 c7 43 08 00 04 00 00 5b 5d 41 5c c3 f3 0f 1e fa 41 89 ca 41 f7 c1 ff 0f 00 00 75 10 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 19 c3 c7 05 46 ef 00 00 16 00 00 00 48 c7 c0 All code ======== 0: c3 ret 1: 66 90 xchg %ax,%ax 3: 48 89 2b mov %rbp,(%rbx) 6: 48 c7 43 08 00 04 00 movq $0x400,0x8(%rbx) d: 00 e: 5b pop %rbx f: 5d pop %rbp 10: 41 5c pop %r12 12: c3 ret 13: f3 0f 1e fa endbr64 17: 41 89 ca mov %ecx,%r10d 1a: 41 f7 c1 ff 0f 00 00 test $0xfff,%r9d 21: 75 10 jne 0x33 23: b8 09 00 00 00 mov $0x9,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 19 ja 0x4b 32: c3 ret 33: c7 05 46 ef 00 00 16 movl $0x16,0xef46(%rip) # 0xef83 3a: 00 00 00 3d: 48 rex.W 3e: c7 .byte 0xc7 3f: c0 .byte 0xc0 Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 19 ja 0x21 8: c3 ret 9: c7 05 46 ef 00 00 16 movl $0x16,0xef46(%rip) # 0xef59 10: 00 00 00 13: 48 rex.W 14: c7 .byte 0xc7 15: c0 .byte 0xc0 [ 27.216245][ C2] RSP: 002b:00007ffc038887a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 27.216561][ C2] RAX: ffffffffffffffda RBX: 00000000000000f0 RCX: 00007f99c5f68287 [ 27.216768][ C2] RDX: 0000000000000003 RSI: 0000000000002000 RDI: 0000000000000000 [ 27.216974][ C2] RBP: 0000000000002000 R08: 00000000ffffffff R09: 0000000000000000 [ 27.217263][ C2] R10: 0000000000000022 R11: 0000000000000246 R12: 00007ffc03889d57 Finger prints: dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage