====================================== | [ 52.137551][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) | [ 52.137883][ C2] | [ 52.137982][ C2] | [ 52.137982][ C2] stack backtrace: [ 52.138450][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 52.138951][ C2] Call Trace: [ 52.139078][ C2] [ 52.139172][ C2] dump_stack_lvl (lib/dump_stack.c:117) [ 52.139372][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 52.139679][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) [ 52.139929][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) [ 52.140094][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) [ 52.140286][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 52.140560][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) [ 52.140743][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) [ 52.140908][ C2] ? stack_trace_save (kernel/stacktrace.c:123) [ 52.141101][ C2] ? save_trace (kernel/locking/lockdep.c:586) [ 52.141377][ C2] mark_lock (kernel/locking/lockdep.c:4678) [ 52.141528][ C2] mark_usage (kernel/locking/lockdep.c:4567) [ 52.141659][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) [ 52.141854][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) [ 52.142064][ C2] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 52.142374][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 52.142550][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 52.142813][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 52.142997][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 52.143207][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 52.143456][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 52.143623][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 52.144007][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 52.144206][ C2] ? br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 52.144466][ C2] br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:87) bridge [ 52.144842][ C2] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 52.145112][ C2] call_timer_fn (kernel/time/timer.c:1793) [ 52.145267][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 52.145445][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) [ 52.145702][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) [ 52.145868][ 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) [ 52.146020][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 52.146173][ C2] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) [ 52.146452][ C2] ? __pfx_br_forward_delay_timer_expired (net/bridge/br_stp_timer.c:80) bridge [ 52.146750][ C2] ? __pfx___run_timers (kernel/time/timer.c:2389) [ 52.146903][ 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) [ 52.147080][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 52.147350][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 52.147504][ C2] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 52.147681][ C2] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) [ 52.147837][ C2] __do_softirq (kernel/softirq.c:554) [ 52.148017][ C2] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) [ 52.148140][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 52.148307][ C2] [ 52.148387][ C2] [ 52.148488][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 52.148680][ C2] RIP: 0010:__orc_find (arch/x86/kernel/unwind_orc.c:80 arch/x86/kernel/unwind_orc.c:102) [ 52.148893][ C2] Code: 89 df 4c 39 e5 77 4e 4c 89 e2 48 29 ea 48 89 d6 48 c1 ea 3f 48 c1 fe 02 48 01 f2 48 d1 fa 48 8d 5c 95 00 48 89 da 48 c1 ea 03 <0f> b6 34 0a 48 89 da 83 e2 07 83 c2 03 40 38 f2 7c 05 40 84 f6 75 All code ======== 0: 89 df mov %ebx,%edi 2: 4c 39 e5 cmp %r12,%rbp 5: 77 4e ja 0x55 7: 4c 89 e2 mov %r12,%rdx a: 48 29 ea sub %rbp,%rdx d: 48 89 d6 mov %rdx,%rsi 10: 48 c1 ea 3f shr $0x3f,%rdx 14: 48 c1 fe 02 sar $0x2,%rsi 18: 48 01 f2 add %rsi,%rdx 1b: 48 d1 fa sar %rdx 1e: 48 8d 5c 95 00 lea 0x0(%rbp,%rdx,4),%rbx 23: 48 89 da mov %rbx,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx 2a:* 0f b6 34 0a movzbl (%rdx,%rcx,1),%esi <-- trapping instruction 2e: 48 89 da mov %rbx,%rdx 31: 83 e2 07 and $0x7,%edx 34: 83 c2 03 add $0x3,%edx 37: 40 38 f2 cmp %sil,%dl 3a: 7c 05 jl 0x41 3c: 40 84 f6 test %sil,%sil 3f: 75 .byte 0x75 Code starting with the faulting instruction =========================================== 0: 0f b6 34 0a movzbl (%rdx,%rcx,1),%esi 4: 48 89 da mov %rbx,%rdx 7: 83 e2 07 and $0x7,%edx a: 83 c2 03 add $0x3,%edx d: 40 38 f2 cmp %sil,%dl 10: 7c 05 jl 0x17 12: 40 84 f6 test %sil,%sil 15: 75 .byte 0x75 [ 52.149571][ C2] RSP: 0018:ffffc9000056f4b8 EFLAGS: 00000a02 [ 52.149792][ C2] RAX: ffffffff8ac995e8 RBX: ffffffff8a839b38 RCX: dffffc0000000000 [ 52.150050][ C2] RDX: 1ffffffff1507367 RSI: 0000000000000002 RDI: ffffffff8a839b34 [ 52.150532][ C2] RBP: ffffffff8a839b34 R08: ffffc9000056f638 R09: 1ffff920000adea8 [ 52.150793][ C2] R10: ffffc9000056f5f8 R11: ffffc9000056f639 R12: ffffffff8a839b3c [ 52.151058][ C2] R13: ffffffff88a00125 R14: ffffffff8a839b34 R15: ffffffff8a839b34 [ 52.151418][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) [ 52.151631][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) [ 52.151793][ C2] unwind_next_frame (arch/x86/kernel/unwind_orc.c:495) [ 52.151945][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 52.152267][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) [ 52.152444][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 52.152647][ C2] ? kernel_text_address (kernel/extable.c:99) [ 52.152829][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) [ 52.153020][ C2] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) [ 52.153199][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 52.153399][ C2] stack_trace_save (kernel/stacktrace.c:123) [ 52.153574][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [ 52.153725][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 52.153903][ C2] set_track_prepare (mm/slub.c:886) [ 52.154064][ C2] ? kasan_quarantine_reduce (./include/linux/srcu.h:285 mm/kasan/quarantine.c:287) [ 52.154228][ C2] ? __kasan_slab_alloc (mm/kasan/common.c:322) [ 52.154509][ C2] ? kmem_cache_alloc_node (./include/linux/kasan.h:201 mm/slub.c:3798 mm/slub.c:3845 mm/slub.c:3888) [ 52.154692][ C2] ? kmalloc_reserve (net/core/skbuff.c:580) [ 52.154845][ C2] ? __alloc_skb (net/core/skbuff.c:668) [ 52.154997][ C2] ? alloc_skb_with_frags (./include/linux/skbuff.h:1313 net/core/skbuff.c:6477) [ 52.155275][ C2] ? sock_alloc_send_pskb (net/core/sock.c:2796) [ 52.155450][ C2] ? packet_snd (net/packet/af_packet.c:2930 net/packet/af_packet.c:3024) [ 52.155610][ C2] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 52.155789][ C2] ? __x64_sys_sendto (net/socket.c:2199) [ 52.155946][ C2] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 52.156106][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 52.156314][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 52.156487][ C2] free_to_partial_list (mm/slub.c:4026) [ 52.156642][ C2] ? qlist_free_all (mm/kasan/quarantine.c:163 mm/kasan/quarantine.c:179) [ 52.156799][ C2] qlist_free_all (mm/kasan/quarantine.c:174) [ 52.156985][ C2] kasan_quarantine_reduce (./include/linux/srcu.h:285 mm/kasan/quarantine.c:287) [ 52.157140][ C2] __kasan_slab_alloc (mm/kasan/common.c:322) [ 52.157348][ C2] kmem_cache_alloc_node (./include/linux/kasan.h:201 mm/slub.c:3798 mm/slub.c:3845 mm/slub.c:3888) [ 52.157623][ C2] ? kmalloc_reserve (net/core/skbuff.c:577) [ 52.157797][ C2] kmalloc_reserve (net/core/skbuff.c:580) [ 52.157975][ C2] __alloc_skb (net/core/skbuff.c:668) [ 52.158143][ C2] ? __pfx___alloc_skb (net/core/skbuff.c:641) [ 52.158427][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 52.158580][ C2] ? dev_queue_xmit_nit (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/core/dev.c:2332) [ 52.158747][ 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) [ 52.158928][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 52.159142][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 52.159339][ C2] alloc_skb_with_frags (./include/linux/skbuff.h:1313 net/core/skbuff.c:6477) [ 52.159503][ C2] sock_alloc_send_pskb (net/core/sock.c:2796) [ 52.159656][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 52.159841][ C2] ? __pfx_sock_alloc_send_pskb (net/core/sock.c:2767) [ 52.160091][ C2] ? dev_get_by_index (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/core/dev.c:888) [ 52.160249][ C2] packet_snd (net/packet/af_packet.c:2930 net/packet/af_packet.c:3024) [ 52.160406][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 52.160557][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 52.160804][ C2] ? __pfx_packet_snd (net/packet/af_packet.c:2944) [ 52.160959][ C2] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) [ 52.161146][ C2] ? trace_raw_output_mmap_lock_acquire_returned (./include/trace/events/mmap_lock.h:52 (discriminator 2)) [ 52.161378][ C2] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) [ 52.161678][ C2] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 52.161887][ C2] ? __pfx___sys_sendto (net/socket.c:2161) [ 52.162091][ C2] ? net_rx_action (net/core/dev.c:6770 net/core/dev.c:6886) [ 52.162285][ C2] ? sock_ioctl (net/socket.c:1344) [ 52.162599][ C2] __x64_sys_sendto (net/socket.c:2199) [ 52.162791][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 52.163027][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 52.163217][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 52.163621][ C2] RIP: 0033:0x7f978edcc85a [ 52.163827][ C2] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89 All code ======== 0: d8 64 89 02 fsubs 0x2(%rcx,%rcx,4) 4: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax b: eb b8 jmp 0xffffffffffffffc5 d: 0f 1f 00 nopl (%rax) 10: f3 0f 1e fa endbr64 14: 41 89 ca mov %ecx,%r10d 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 15 jne 0x38 23: b8 2c 00 00 00 mov $0x2c,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 7e ja 0xb0 32: c3 ret 33: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 38: 41 54 push %r12 3a: 48 83 ec 30 sub $0x30,%rsp 3e: 44 rex.R 3f: 89 .byte 0x89 Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 7e ja 0x86 8: c3 ret 9: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) e: 41 54 push %r12 10: 48 83 ec 30 sub $0x30,%rsp 14: 44 rex.R 15: 89 .byte 0x89 [ 52.164610][ C2] RSP: 002b:00007ffdc855d5b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 52.164887][ C2] RAX: ffffffffffffffda RBX: 0000000000ab19d0 RCX: 00007f978edcc85a [ 52.165177][ C2] RDX: 0000000000001f6a RSI: 0000000000ab58e2 RDI: 0000000000000005 [ 52.165758][ C2] RBP: 0000000000ab58e2 R08: 00007ffdc855d5c0 R09: 0000000000000014 [ 52.166165][ C2] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 Finger prints: dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage