------------[ cut here ]------------
WARNING: CPU: 1 PID: 27607 at include/net/tcp.h:1223 tcp_snd_cwnd_set include/net/tcp.h:1223 [inline]
WARNING: CPU: 1 PID: 27607 at include/net/tcp.h:1223 tcp_cwnd_reduction+0x327/0x390 net/ipv4/tcp_input.c:2631
Modules linked in:
CPU: 1 PID: 27607 Comm: syz-executor.4 Not tainted 5.19.0-rc5-syzkaller-01146-gb6afeb87ad29 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
RIP: 0010:tcp_snd_cwnd_set include/net/tcp.h:1223 [inline]
RIP: 0010:tcp_cwnd_reduction+0x327/0x390 net/ipv4/tcp_input.c:2631
Code: 03 7e 7b 89 ab 70 09 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f e9 77 a9 9d f9 e8 72 a9 9d f9 0f 0b eb e4 e8 69 a9 9d f9 <0f> 0b eb ac e8 c0 f2 ea f9 e9 32 fd ff ff e8 b6 f2 ea f9 e9 1c fe
RSP: 0018:ffffc90002f3f870 EFLAGS: 00010212
RAX: 0000000000001595 RBX: ffff888079173000 RCX: ffffc90003e94000
RDX: 0000000000040000 RSI: ffffffff87dcc1c7 RDI: 0000000000000005
RBP: 00000000ffffffff R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: 0000000000000009
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000003
FS:  00007fdcf380b700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f17a416bfc0 CR3: 000000007f2c9000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 tcp_cong_control net/ipv4/tcp_input.c:3489 [inline]
 tcp_ack+0x4305/0x5a40 net/ipv4/tcp_input.c:3894
 tcp_rcv_established+0x5e8/0x20e0 net/ipv4/tcp_input.c:5973
 tcp_v4_do_rcv+0x66c/0x9b0 net/ipv4/tcp_ipv4.c:1661
 sk_backlog_rcv include/net/sock.h:1047 [inline]
 __release_sock+0x134/0x3b0 net/core/sock.c:2850
 release_sock+0x54/0x1b0 net/core/sock.c:3406
 tcp_sendmsg+0x36/0x40 net/ipv4/tcp.c:1474
 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:819
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 __sys_sendto+0x21a/0x320 net/socket.c:2116
 __do_sys_sendto net/socket.c:2128 [inline]
 __se_sys_sendto net/socket.c:2124 [inline]
 __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2124
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7fdcf2689109
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdcf380b168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fdcf279bf60 RCX: 00007fdcf2689109
RDX: 0000000000000001 RSI: 00000000200004c0 RDI: 0000000000000003
RBP: 00007fdcf380b1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000805 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd92f1cb6f R14: 00007fdcf380b300 R15: 0000000000022000
 </TASK>