------------[ cut here ]------------ WARNING: CPU: 0 PID: 15 at include/net/tcp.h:1219 tcp_snd_cwnd_set include/net/tcp.h:1219 [inline] WARNING: CPU: 0 PID: 15 at include/net/tcp.h:1219 tcp_mtup_probe_success net/ipv4/tcp_input.c:2712 [inline] WARNING: CPU: 0 PID: 15 at include/net/tcp.h:1219 tcp_clean_rtx_queue net/ipv4/tcp_input.c:3356 [inline] WARNING: CPU: 0 PID: 15 at include/net/tcp.h:1219 tcp_ack+0x541e/0x58f0 net/ipv4/tcp_input.c:3861 Modules linked in: CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 5.18.0-syzkaller-11650-g2a5699b0de4e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:tcp_snd_cwnd_set include/net/tcp.h:1219 [inline] RIP: 0010:tcp_mtup_probe_success net/ipv4/tcp_input.c:2712 [inline] RIP: 0010:tcp_clean_rtx_queue net/ipv4/tcp_input.c:3356 [inline] RIP: 0010:tcp_ack+0x541e/0x58f0 net/ipv4/tcp_input.c:3861 Code: dc d5 ff ff 48 8b 7c 24 78 e8 ce 97 ea f9 e9 a7 d5 ff ff 48 8b bc 24 88 00 00 00 e8 ac 97 ea f9 e9 1e d5 ff ff e8 82 d7 9d f9 <0f> 0b e9 6e f4 ff ff 48 89 f7 e8 93 97 ea f9 e9 7c cf ff ff 48 8b Code: dc d5 ff ff 48 8b 7c 24 78 e8 ce 97 ea f9 e9 a7 d5 ff ff 48 8b bc 24 88 00 00 00 e8 ac 97 ea f9 e9 1e d5 ff ff e8 82 d7 9d f9 <0f> 0b e9 6e f4 ff ff 48 89 f7 e8 93 97 ea f9 e9 7c cf ff ff 48 8b RSP: 0018:ffffc900001475c8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: ffff888010e73b00 RSI: ffffffff87dcacce RDI: 0000000000000005 RBP: ffff88807a5a4fc0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88807a5a5184 R13: 0000000000001204 R14: ffff88807a5a5188 R15: ffff88807a5a4800 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020b21000 CR3: 000000001b074000 CR4: 0000000000350ef0 Call Trace: tcp_rcv_established+0x5e8/0x20e0 net/ipv4/tcp_input.c:5973 tcp_v4_do_rcv+0x66c/0x980 net/ipv4/tcp_ipv4.c:1659 tcp_v4_rcv+0x2ee8/0x36b0 net/ipv4/tcp_ipv4.c:2072 ip_protocol_deliver_rcu+0xa3/0x7c0 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2dc/0x4b0 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:307 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] ip_local_deliver+0x1aa/0x200 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:461 [inline] ip_rcv_finish+0x1cb/0x2f0 net/ipv4/ip_input.c:437 NF_HOOK include/linux/netfilter.h:307 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] ip_rcv+0xaa/0xd0 net/ipv4/ip_input.c:557 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5478 __netif_receive_skb+0x24/0x1b0 net/core/dev.c:5592 process_backlog+0x3a0/0x7c0 net/core/dev.c:5920 __napi_poll+0xb3/0x6e0 net/core/dev.c:6486 napi_poll net/core/dev.c:6553 [inline] net_rx_action+0x9c1/0xd90 net/core/dev.c:6664 __do_softirq+0x29b/0x9c2 kernel/softirq.c:571 run_ksoftirqd kernel/softirq.c:934 [inline] run_ksoftirqd+0x2d/0x60 kernel/softirq.c:926 smpboot_thread_fn+0x645/0x9c0 kernel/smpboot.c:164 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302