------------[ cut here ]------------
WARNING: CPU: 1 PID: 22410 at net/ipv4/af_inet.c:156 inet_sock_destruct+0x623/0x730 net/ipv4/af_inet.c:156
Modules linked in:
CPU: 1 UID: 0 PID: 22410 Comm: syz.2.5272 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:inet_sock_destruct+0x623/0x730 net/ipv4/af_inet.c:156
Code: 0f 0b 90 e9 62 fe ff ff e8 da 93 bc f7 90 0f 0b 90 e9 95 fe ff ff e8 cc 93 bc f7 90 0f 0b 90 e9 bb fe ff ff e8 be 93 bc f7 90 <0f> 0b 90 e9 e1 fe ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 9f fc
RSP: 0018:ffffc90000a08b48 EFLAGS: 00010246
RAX: ffffffff8a031872 RBX: dffffc0000000000 RCX: ffff88806204da00
RDX: 0000000000000100 RSI: 0000000000000fff RDI: 0000000000000000
RBP: 0000000000000fff R08: ffff88803147ee9f R09: 1ffff1100628fdd3
R10: dffffc0000000000 R11: ffffed100628fdd4 R12: ffff88803147ec00
R13: dffffc0000000000 R14: ffff88803147ee84 R15: 1ffff1100628fd82
FS:  00007f84277e66c0(0000) GS:ffff888125d1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3350fce0 CR3: 000000007b66a000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __sk_destruct+0x86/0x660 net/core/sock.c:2339
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xca8/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:check_kcov_mode kernel/kcov.c:194 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:246 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp2+0x37/0x90 kernel/kcov.c:307
Code: 08 40 a0 92 65 8b 0d 48 90 e0 10 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 5b 83 ba 3c 16 00 00 00 74 52 8b 8a 18 16 00 00 <83> f9 03 75 47 48 8b 8a 20 16 00 00 44 8b 8a 1c 16 00 00 49 c1 e1
RSP: 0018:ffffc900146aef18 EFLAGS: 00000246
RAX: ffffffff89f63890 RBX: ffffc900146af040 RCX: 0000000000000003
RDX: ffff88806204da00 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc900146aeff0 R08: 0000000000002796 R09: 0000000000400000
R10: 000000000004f2c8 R11: fffff520028d5e04 R12: 000000000000aa1b
R13: dffffc0000000000 R14: ffff8880572f0cc0 R15: 1ffff920028d5e08
 tcp_established_options+0xe0/0x610 net/ipv4/tcp_output.c:1005
 tcp_current_mss+0x258/0x470 net/ipv4/tcp_output.c:1884
 tcp_xmit_retransmit_queue+0xbf/0xb40 net/ipv4/tcp_output.c:3504
 tcp_xmit_recovery net/ipv4/tcp_input.c:3786 [inline]
 tcp_ack+0x4090/0x6150 net/ipv4/tcp_input.c:3956
 tcp_rcv_established+0x7e9/0x1eb0 net/ipv4/tcp_input.c:6205
 tcp_v4_do_rcv+0xa23/0xce0 net/ipv4/tcp_ipv4.c:1926
 sk_backlog_rcv include/net/sock.h:1148 [inline]
 __release_sock+0x21c/0x350 net/core/sock.c:3194
 release_sock+0x5f/0x1f0 net/core/sock.c:3748
 sk_stream_wait_memory+0x724/0xf70 net/core/stream.c:149
 tcp_sendmsg_locked+0x2147/0x5620 net/ipv4/tcp.c:1346
 tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1393
 sock_sendmsg_nosec net/socket.c:714 [inline]
 __sock_sendmsg+0x19c/0x270 net/socket.c:729
 __sys_sendto+0x3bd/0x520 net/socket.c:2228
 __do_sys_sendto net/socket.c:2235 [inline]
 __se_sys_sendto net/socket.c:2231 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2231
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f842698ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f84277e6038 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f8426bb5fa0 RCX: 00007f842698ebe9
RDX: 0000000000001d4c RSI: 0000200000000580 RDI: 0000000000000003
RBP: 00007f8426a11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000010048095 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8426bb6038 R14: 00007f8426bb5fa0 R15: 00007fff10c5b9e8
 </TASK>
----------------
Code disassembly (best guess):
   0:	08 40 a0             	or     %al,-0x60(%rax)
   3:	92                   	xchg   %eax,%edx
   4:	65 8b 0d 48 90 e0 10 	mov    %gs:0x10e09048(%rip),%ecx        # 0x10e09053
   b:	81 e1 00 01 ff 00    	and    $0xff0100,%ecx
  11:	74 11                	je     0x24
  13:	81 f9 00 01 00 00    	cmp    $0x100,%ecx
  19:	75 5b                	jne    0x76
  1b:	83 ba 3c 16 00 00 00 	cmpl   $0x0,0x163c(%rdx)
  22:	74 52                	je     0x76
  24:	8b 8a 18 16 00 00    	mov    0x1618(%rdx),%ecx
* 2a:	83 f9 03             	cmp    $0x3,%ecx <-- trapping instruction
  2d:	75 47                	jne    0x76
  2f:	48 8b 8a 20 16 00 00 	mov    0x1620(%rdx),%rcx
  36:	44 8b 8a 1c 16 00 00 	mov    0x161c(%rdx),%r9d
  3d:	49                   	rex.WB
  3e:	c1                   	.byte 0xc1
  3f:	e1                   	.byte 0xe1