------------[ cut here ]------------
WARNING: CPU: 2 PID: 112 at net/ipv4/af_inet.c:154 inet_sock_destruct+0x6df/0x8a0 net/ipv4/af_inet.c:154
Modules linked in:
CPU: 2 PID: 112 Comm: kswapd0 Not tainted 6.4.0-rc4-syzkaller-00371-g6f64a5ebe1dc #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:inet_sock_destruct+0x6df/0x8a0 net/ipv4/af_inet.c:154
Code: ff e8 e5 62 e1 f8 0f 0b e9 07 fe ff ff e8 d9 62 e1 f8 0f 0b e9 3f fe ff ff e8 cd 62 e1 f8 0f 0b e9 95 fd ff ff e8 c1 62 e1 f8 <0f> 0b e9 9f fe ff ff e8 75 2b 34 f9 e9 7a fc ff ff 4c 89 e7 e8 a8
RSP: 0018:ffffc90000588c48 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00000000ffff9000 RCX: 0000000000000100
RDX: ffff8880167fc800 RSI: ffffffff88a2e37f RDI: 0000000000000005
RBP: ffff8880259e9880 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffff9000 R11: 0000000000094001 R12: ffff8880259e98a8
R13: ffff8880259e9af4 R14: ffff8880259e9900 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88802c800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f65ffba4 CR3: 000000000c571000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __sk_destruct+0x4d/0x770 net/core/sock.c:2130
 sk_destruct net/core/sock.c:2178 [inline]
 __sk_free+0x175/0x460 net/core/sock.c:2189
 sk_free+0x7c/0xa0 net/core/sock.c:2200
 sock_put include/net/sock.h:1972 [inline]
 tcp_write_timer+0x24b/0x2b0 net/ipv4/tcp_timer.c:654
 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
 expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751
 __run_timers kernel/time/timer.c:2022 [inline]
 __run_timers kernel/time/timer.c:1995 [inline]
 run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035
 __do_softirq+0x1d4/0x905 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x3c/0x70 kernel/locking/spinlock.c:194
Code: 74 24 10 e8 46 7f 52 f7 48 89 ef e8 6e ed 52 f7 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> df c2 44 f7 65 8b 05 e0 52 f0 75 85 c0 74 0a 5b 5d c3 e8 cc 78
RSP: 0018:ffffc90000e6fdd0 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1cf49e1
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff88803fffeb88 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1cf4fea R11: dffffc0000000000 R12: 0000000000000000
R13: ffff8880167fc800 R14: 0000000000000003 R15: ffff88803fffa000
 kswapd_try_to_sleep mm/vmscan.c:7582 [inline]
 kswapd+0x33e/0xd60 mm/vmscan.c:7707
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
----------------
Code disassembly (best guess):
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	46 7f 52             	rex.RX jg 0x59
   7:	f7 48 89 ef e8 6e ed 	testl  $0xed6ee8ef,-0x77(%rax)
   e:	52                   	push   %rdx
   f:	f7 81 e3 00 02 00 00 	testl  $0x9c257500,0x200e3(%rcx)
  16:	75 25 9c
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 2d                	jne    0x4c
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 df c2 44 f7       	callq  0xf744c30e <-- trapping instruction
  2f:	65 8b 05 e0 52 f0 75 	mov    %gs:0x75f052e0(%rip),%eax        # 0x75f05316
  36:	85 c0                	test   %eax,%eax
  38:	74 0a                	je     0x44
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	c3                   	retq
  3d:	e8                   	.byte 0xe8
  3e:	cc                   	int3
  3f:	78                   	.byte 0x78