WARNING: CPU: 0 PID: 11046 at include/net/tcp.h:1219 tcp_snd_cwnd_set include/net/tcp.h:1219 [inline] WARNING: CPU: 0 PID: 11046 at include/net/tcp.h:1219 tcp_cwnd_reduction+0x327/0x390 net/ipv4/tcp_input.c:2636 Modules linked in: CPU: 0 PID: 11046 Comm: syz-executor.4 Not tainted 5.19.0-rc6-syzkaller-00389-g44484fa8eedf #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:1219 [inline] RIP: 0010:tcp_cwnd_reduction+0x327/0x390 net/ipv4/tcp_input.c:2636 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 87 e1 9d f9 e8 82 e1 9d f9 0f 0b eb e4 e8 79 e1 9d f9 <0f> 0b eb ac e8 c0 9d ea f9 e9 32 fd ff ff e8 b6 9d ea f9 e9 1c fe RSP: 0018:ffffc9000313f870 EFLAGS: 00010212 RAX: 00000000000014af RBX: ffff88804783bc00 RCX: ffffc9000a9c2000 RDX: 0000000000040000 RSI: ffffffff87dc8aa7 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000008 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000003 FS: 00007faf45009700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff841b6a1b8 CR3: 0000000045c5e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tcp_cong_control net/ipv4/tcp_input.c:3495 [inline] tcp_ack+0x42ba/0x59f0 net/ipv4/tcp_input.c:3900 tcp_rcv_established+0x5e8/0x20e0 net/ipv4/tcp_input.c:5981 tcp_v4_do_rcv+0x66c/0x9b0 net/ipv4/tcp_ipv4.c:1659 sk_backlog_rcv include/net/sock.h:1047 [inline] __release_sock+0x134/0x3b0 net/core/sock.c:2849 release_sock+0x54/0x1b0 net/core/sock.c:3404 tcp_sendmsg+0x36/0x40 net/ipv4/tcp.c:1450 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:2119 __do_sys_sendto net/socket.c:2131 [inline] __se_sys_sendto net/socket.c:2127 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2127 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+0x63/0xcd RIP: 0033:0x7faf43e891f9 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:00007faf45009168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007faf43f9bf60 RCX: 00007faf43e891f9 RDX: 0000000000000001 RSI: 00000000200004c0 RDI: 0000000000000003 RBP: 00007faf450091d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000805 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffce779b98f R14: 00007faf45009300 R15: 0000000000022000