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WARNING: net/ipv4/af_inet.c:157 at inet_sock_destruct+0x68c/0x830 net/ipv4/af_inet.c:157, CPU#3: swapper/3/0
Modules linked in:
CPU: 3 UID: 0 PID: 0 Comm: swapper/3 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:inet_sock_destruct+0x68c/0x830 net/ipv4/af_inet.c:157
Code: 0f 0b 90 e9 0a fe ff ff e8 e1 4d cf f7 90 0f 0b 90 e9 56 fe ff ff e8 d3 4d cf f7 90 0f 0b 90 e9 8c fe ff ff e8 c5 4d cf f7 90 <0f> 0b 90 e9 cb fe ff ff e8 47 25 39 f8 e9 cf fc ff ff 4c 89 ff e8
RSP: 0018:ffffc900006f8d90 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88803ddb5ac0 RCX: ffffffff89ef9c47
RDX: ffff88801e290000 RSI: ffffffff89ef9d7b RDI: 0000000000000005
RBP: 0000000000000f70 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000f70 R11: 0000000000005e38 R12: ffff88803ddb5ac0
R13: ffff88803ddb5b50 R14: ffffc900006f8e90 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880d6bf5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f65e81fb6b0 CR3: 000000000e184000 CR4: 0000000000352ef0
Call Trace:
__sk_destruct+0x85/0xbc0 net/core/sock.c:2350
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0x79c/0x15f0 kernel/rcu/tree.c:2857
handle_softirqs+0x219/0x950 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x109/0x170 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:82
Code: 96 5f 02 c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 13 09 12 00 fb f4 cc 35 03 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
RSP: 0018:ffffc90000197de8 EFLAGS: 00000286
RAX: 000000000026aaeb RBX: 0000000000000003 RCX: ffffffff8b7856d9
RDX: 0000000000000000 RSI: ffffffff8daceab2 RDI: ffffffff8bf2b400
RBP: ffffed1003c52000 R08: 0000000000000001 R09: ffffed100d4e673d
R10: ffff88806a7339eb R11: ffff88801e290b30 R12: 0000000000000003
R13: ffff88801e290000 R14: ffffffff9088bdd0 R15: 0000000000000000
arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
default_idle+0x13/0x20 arch/x86/kernel/process.c:767
default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:191 [inline]
do_idle+0x38d/0x510 kernel/sched/idle.c:332
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:430
start_secondary+0x21d/0x2d0 arch/x86/kernel/smpboot.c:312
common_startup_64+0x13e/0x148
----------------
Code disassembly (best guess):
0: 96 xchg %eax,%esi
1: 5f pop %rdi
2: 02 c3 add %bl,%al
4: cc int3
5: cc int3
6: cc int3
7: cc int3
8: 0f 1f 00 nopl (%rax)
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
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: f3 0f 1e fa endbr64
1f: eb 07 jmp 0x28
21: 0f 00 2d 13 09 12 00 verw 0x120913(%rip) # 0x12093b
28: fb sti
29: f4 hlt
* 2a: e9 cc 35 03 00 jmp 0x335fb <-- trapping instruction
2f: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
36: 00 00 00
39: 66 90 xchg %ax,%ax
3b: 90 nop
3c: 90 nop
3d: 90 nop
3e: 90 nop
3f: 90 nop