netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. TCP: request_sock_TCPv6: Possible SYN flooding on port 2. Sending cookies. Check SNMP counters. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 17 at net/core/stream.c:212 sk_stream_kill_queues+0x2a3/0x380 net/core/stream.c:212 Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 1 PID: 17 Comm: ksoftirqd/1 Not tainted 4.14.307-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 panic+0x21d/0x451 kernel/panic.c:247 check_panic_on_warn.cold+0x19/0x35 kernel/panic.c:171 __warn+0xdf/0x1e0 kernel/panic.c:603 report_bug+0x208/0x250 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 RIP: 0010:sk_stream_kill_queues+0x2a3/0x380 net/core/stream.c:212 RSP: 0018:ffff8880b54b74b8 EFLAGS: 00010206 RAX: ffff8880b54a8480 RBX: ffff88804df10bc0 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffff8880b54a8d58 RDI: ffff88804df10df8 RBP: 0000000000000b00 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88804df10db0 R13: ffffffff8c9b7760 R14: ffff88804df10dd0 R15: dffffc0000000000 inet_csk_destroy_sock+0x171/0x400 net/ipv4/inet_connection_sock.c:868 tcp_done+0x1b8/0x210 net/ipv4/tcp.c:3436 tcp_reset.part.0+0x3b9/0x580 net/ipv4/tcp_input.c:4066 tcp_reset include/net/tcp.h:1636 [inline] tcp_validate_incoming+0x1040/0x1640 net/ipv4/tcp_input.c:5391 tcp_rcv_state_process+0x9de/0x4af0 net/ipv4/tcp_input.c:6017 tcp_v6_do_rcv+0x3d5/0x13e0 net/ipv6/tcp_ipv6.c:1361 tcp_v6_rcv+0x24e2/0x33a0 net/ipv6/tcp_ipv6.c:1553 ip6_input_finish+0x3dc/0x1570 net/ipv6/ip6_input.c:291 NF_HOOK include/linux/netfilter.h:250 [inline] ip6_input+0xb9/0x300 net/ipv6/ip6_input.c:334 dst_input include/net/dst.h:476 [inline] ip6_rcv_finish+0x240/0x770 net/ipv6/ip6_input.c:78 NF_HOOK include/linux/netfilter.h:250 [inline] ipv6_rcv+0xac7/0x1b60 net/ipv6/ip6_input.c:215 __netif_receive_skb_core+0x15ee/0x2a30 net/core/dev.c:4474 __netif_receive_skb+0x27/0x1a0 net/core/dev.c:4512 process_backlog+0x218/0x6f0 net/core/dev.c:5195 napi_poll net/core/dev.c:5604 [inline] net_rx_action+0x466/0xfd0 net/core/dev.c:5670 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 run_ksoftirqd+0x50/0x1a0 kernel/softirq.c:670 smpboot_thread_fn+0x5c1/0x920 kernel/smpboot.c:164 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406 Kernel Offset: disabled Rebooting in 86400 seconds..