======================================
| [ 81.671951][ C1] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0)
| [ 81.672238][ C1] ------------[ cut here ]------------
| [ 81.672434][ C1] kernel BUG at include/linux/mm.h:1140!
| [ 81.672650][ C1] Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
[ 81.673122][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 81.673460][ C1] RIP: 0010:__free_pages (./include/linux/mm.h:1140 ./include/linux/mm.h:1138 mm/page_alloc.c:4819)
[ 81.673620][ C1] Code: 0f 94 c3 e9 ba fe ff ff 48 c7 c6 a0 18 98 bb 4c 89 e7 e8 df bf f4 ff 90 0f 0b 48 c7 c6 40 29 98 bb 4c 89 e7 e8 cd bf f4 ff 90 <0f> 0b 48 89 ef e8 72 03 09 00 e9 c5 fe ff ff e8 98 03 09 00 e9 35
All code
========
0: 0f 94 c3 sete %bl
3: e9 ba fe ff ff jmp 0xfffffffffffffec2
8: 48 c7 c6 a0 18 98 bb mov $0xffffffffbb9818a0,%rsi
f: 4c 89 e7 mov %r12,%rdi
12: e8 df bf f4 ff call 0xfffffffffff4bff6
17: 90 nop
18: 0f 0b ud2
1a: 48 c7 c6 40 29 98 bb mov $0xffffffffbb982940,%rsi
21: 4c 89 e7 mov %r12,%rdi
24: e8 cd bf f4 ff call 0xfffffffffff4bff6
29: 90 nop
2a:* 0f 0b ud2 <-- trapping instruction
2c: 48 89 ef mov %rbp,%rdi
2f: e8 72 03 09 00 call 0x903a6
34: e9 c5 fe ff ff jmp 0xfffffffffffffefe
39: e8 98 03 09 00 call 0x903d6
3e: e9 .byte 0xe9
3f: 35 .byte 0x35
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 48 89 ef mov %rbp,%rdi
5: e8 72 03 09 00 call 0x9037c
a: e9 c5 fe ff ff jmp 0xfffffffffffffed4
f: e8 98 03 09 00 call 0x903ac
14: e9 .byte 0xe9
15: 35 .byte 0x35
[ 81.674206][ C1] RSP: 0018:ffffc900001e8df8 EFLAGS: 00010246
[ 81.674407][ C1] RAX: 000000000000003e RBX: 0000000000000000 RCX: 1ffffffff78bb43c
[ 81.674670][ C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[ 81.674907][ C1] RBP: ffffea000017b334 R08: 0000000000000000 R09: fffffbfff78bb43c
[ 81.675141][ C1] R10: 0000000000000003 R11: 205d314320202020 R12: ffffea000017b300
[ 81.675386][ C1] R13: ffffc900001e8ec0 R14: 0000000000000000 R15: 0000000000000007
[ 81.675621][ C1] FS: 00007f51e7d9c740(0000) GS:ffff88802f680000(0000) knlGS:0000000000000000
[ 81.675923][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 81.676156][ C1] CR2: 00007f51e7dd6230 CR3: 00000000082d2004 CR4: 0000000000772ef0
[ 81.676392][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 81.676642][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 81.676910][ C1] PKRU: 55555554
[ 81.677034][ C1] Call Trace:
[ 81.677162][ C1]
[ 81.677244][ C1] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447)
[ 81.677375][ C1] ? do_trap (arch/x86/kernel/traps.c:156 arch/x86/kernel/traps.c:197)
[ 81.677494][ C1] ? __free_pages (./include/linux/mm.h:1140 ./include/linux/mm.h:1138 mm/page_alloc.c:4819)
[ 81.677653][ C1] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:218)
[ 81.677815][ C1] ? __free_pages (./include/linux/mm.h:1140 ./include/linux/mm.h:1138 mm/page_alloc.c:4819)
[ 81.677973][ C1] ? __free_pages (./include/linux/mm.h:1140 ./include/linux/mm.h:1138 mm/page_alloc.c:4819)
[ 81.678132][ C1] ? handle_invalid_op (arch/x86/kernel/traps.c:256)
[ 81.678288][ C1] ? __free_pages (./include/linux/mm.h:1140 ./include/linux/mm.h:1138 mm/page_alloc.c:4819)
[ 81.678444][ C1] ? exc_invalid_op (arch/x86/kernel/traps.c:315)
[ 81.678602][ C1] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621)
[ 81.678771][ C1] ? __free_pages (./include/linux/mm.h:1140 ./include/linux/mm.h:1138 mm/page_alloc.c:4819)
[ 81.678930][ C1] ? __free_pages (./include/linux/mm.h:1140 ./include/linux/mm.h:1138 mm/page_alloc.c:4819)
[ 81.679086][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2567)
[ 81.679245][ C1] neigh_hash_free_rcu (net/core/neighbour.c:555)
[ 81.679411][ C1] rcu_do_batch (kernel/rcu/tree.c:2567)
[ 81.679569][ C1] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2491)
[ 81.679725][ C1] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4339 kernel/locking/lockdep.c:4406)
[ 81.679938][ C1] rcu_core (kernel/rcu/tree.c:2825)
[ 81.680050][ C1] handle_softirqs (kernel/softirq.c:554)
[ 81.680202][ C1] irq_exit_rcu (kernel/softirq.c:589 kernel/softirq.c:428 kernel/softirq.c:637 kernel/softirq.c:649)
[ 81.680310][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1037 arch/x86/kernel/apic/apic.c:1037)
[ 81.680459][ C1]
[ 81.680533][ C1]
[ 81.680611][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702)
[ 81.680801][ C1] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
[ 81.680999][ C1] Code: 10 e8 c1 9d 87 fd 48 89 ef e8 d9 0e 88 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 55 0b bb 44 <74> 0e 5b 5d c3 cc cc cc cc e8 8f e0 ac fd eb dc 0f 1f 44 00 00 5b
All code
========
0: 10 e8 adc %ch,%al
2: c1 9d 87 fd 48 89 ef rcrl $0xef,-0x76b70279(%rbp)
9: e8 d9 0e 88 fd call 0xfffffffffd880ee7
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 55 0b bb 44 decl %gs:0x44bb0b55(%rip) # 0x44bb0b7f
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 8f e0 ac fd call 0xfffffffffdace0c7
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 8f e0 ac fd call 0xfffffffffdace09d
e: eb dc jmp 0xffffffffffffffec
10: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
15: 5b pop %rbx
[ 81.681520][ C1] RSP: 0018:ffffc90000a9f658 EFLAGS: 00000246
[ 81.681704][ C1] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff7cfbaf2
[ 81.681927][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffbb48bd81
[ 81.682162][ C1] RBP: ffff88800104f440 R08: 0000000000000001 R09: fffffbfff7cf99c9
[ 81.682400][ C1] R10: ffffffffbe7cce4f R11: ffffc90000a9f489 R12: ffff8880020edc10
[ 81.682645][ C1] R13: 0000000000000000 R14: ffffc90000a9f6a8 R15: ffff8880028eeb00
[ 81.682908][ C1] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[ 81.683111][ C1] qlist_free_all (mm/kasan/quarantine.c:174)
[ 81.683285][ C1] kasan_quarantine_reduce (./include/linux/srcu.h:320 mm/kasan/quarantine.c:287)
[ 81.683449][ C1] __kasan_slab_alloc (mm/kasan/common.c:329)
[ 81.683613][ C1] kmem_cache_alloc_node_noprof (mm/slub.c:4086 mm/slub.c:4134 mm/slub.c:4186)
[ 81.683813][ C1] __alloc_skb (net/core/skbuff.c:668)
[ 81.683984][ C1] ? __pfx___alloc_skb (net/core/skbuff.c:651)
[ 81.684158][ C1] ? fib4_rule_action.part.0 (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/ipv4/fib_rules.c:141)
[ 81.684309][ C1] ? fib_rules_lookup (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/fib_rules.c:342)
[ 81.684499][ C1] alloc_skb_with_frags (./include/linux/skbuff.h:1325 net/core/skbuff.c:6622)
[ 81.684656][ C1] ? __pfx_fib_rules_lookup (net/core/fib_rules.c:295)
[ 81.684825][ C1] ? l3mdev_update_flow (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/l3mdev/l3mdev.c:299)
[ 81.684990][ C1] sock_alloc_send_pskb (net/core/sock.c:2874)
[ 81.685135][ C1] ? find_held_lock (kernel/locking/lockdep.c:5315)
[ 81.685287][ C1] ? __pfx_sock_alloc_send_pskb (net/core/sock.c:2845)
[ 81.685471][ C1] ? __mkroute_output (./arch/x86/include/asm/atomic.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2401 ./include/linux/atomic/atomic-instrumented.h:1476 ./include/linux/rcuref.h:67 ./include/net/dst.h:302 net/ipv4/route.c:2566)
[ 81.685644][ C1] ? ip_route_output_key_hash (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/ipv4/route.c:2623)
[ 81.685807][ C1] raw_send_hdrinc (./include/net/sock.h:1797 net/ipv4/raw.c:353)
[ 81.685972][ C1] ? __pfx_raw_send_hdrinc (net/ipv4/raw.c:330)
[ 81.686146][ C1] raw_sendmsg (net/ipv4/raw.c:644)
[ 81.686314][ C1] ? __pfx_raw_sendmsg (net/ipv4/raw.c:483)
[ 81.686482][ C1] ? usage_skip (kernel/locking/lockdep.c:2314 kernel/locking/lockdep.c:2282)
[ 81.686648][ C1] ? __lock_release (kernel/locking/lockdep.c:5501)
[ 81.686807][ C1] ? __might_fault (mm/memory.c:6700 mm/memory.c:6693)
[ 81.686973][ C1] ? __pfx___lock_release (kernel/locking/lockdep.c:5477)
[ 81.687130][ C1] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52))
[ 81.687293][ C1] ? __might_fault (mm/memory.c:6700 mm/memory.c:6693)
[ 81.687451][ C1] ? lock_acquire (kernel/locking/lockdep.c:5798)
[ 81.687610][ C1] ? __might_fault (mm/memory.c:6700 mm/memory.c:6693)
[ 81.687774][ C1] ? __might_fault (mm/memory.c:6700 mm/memory.c:6693)
[ 81.687933][ C1] __sys_sendto (net/socket.c:729 net/socket.c:744 net/socket.c:2214)
[ 81.688092][ C1] ? __pfx___sys_sendto (net/socket.c:2184)
[ 81.688253][ C1] ? __might_fault (mm/memory.c:6700 mm/memory.c:6693)
[ 81.688428][ C1] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52))
[ 81.688587][ C1] ? lock_acquire (kernel/locking/lockdep.c:5798)
[ 81.688747][ C1] ? __might_fault (mm/memory.c:6700 mm/memory.c:6693)
[ 81.688912][ C1] ? trace_rseq_update (./include/trace/events/rseq.h:11 (discriminator 52))
[ 81.689075][ C1] ? __rseq_handle_notify_resume (kernel/rseq.c:316)
[ 81.689272][ C1] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:316)
[ 81.689477][ C1] ? __pfx_task_work_run (kernel/task_work.c:196)
[ 81.689637][ C1] __x64_sys_sendto (net/socket.c:2222)
[ 81.689802][ C1] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406)
[ 81.690022][ C1] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 81.690195][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 81.690396][ C1] RIP: 0033:0x7f51e7ff685a
[ 81.690560][ C1] 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
[ 81.691135][ C1] RSP: 002b:00007fff4a54f0d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[ 81.691363][ C1] RAX: ffffffffffffffda RBX: 000000003a4d69d0 RCX: 00007f51e7ff685a
[ 81.691582][ C1] RDX: 000000000000005c RSI: 000000003a4d65c0 RDI: 0000000000000005
[ 81.691798][ C1] RBP: 000000003a4d69d0 R08: 00007fff4a54f0e0 R09: 0000000000000010
[ 81.692013][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000005c
Finger prints:
__free_pages:neigh_hash_free_rcu:rcu_do_batch:rcu_core:handle_softirqs