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WARNING: CPU: 1 PID: 23068 at include/net/sock.h:1578 sock_owned_by_me include/net/sock.h:1578 [inline]
WARNING: CPU: 1 PID: 23068 at include/net/sock.h:1578 sock_owned_by_me include/net/sock.h:1575 [inline]
WARNING: CPU: 1 PID: 23068 at include/net/sock.h:1578 tcp_snd_una_update net/ipv4/tcp_input.c:3358 [inline]
WARNING: CPU: 1 PID: 23068 at include/net/sock.h:1578 tcp_ack_update_window net/ipv4/tcp_input.c:3411 [inline]
WARNING: CPU: 1 PID: 23068 at include/net/sock.h:1578 tcp_ack+0x2f36/0x5a00 net/ipv4/tcp_input.c:3666
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 23068 Comm: syz-executor.1 Not tainted 5.5.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x3e kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 fixup_bug arch/x86/kernel/traps.c:169 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:sock_owned_by_me include/net/sock.h:1578 [inline]
RIP: 0010:sock_owned_by_me include/net/sock.h:1575 [inline]
RIP: 0010:tcp_snd_una_update net/ipv4/tcp_input.c:3358 [inline]
RIP: 0010:tcp_ack_update_window net/ipv4/tcp_input.c:3411 [inline]
RIP: 0010:tcp_ack+0x2f36/0x5a00 net/ipv4/tcp_input.c:3666
Code: d0 7c 08 84 d2 0f 85 9c 22 00 00 44 8b 2d 76 0c e3 03 31 ff 44 89 ee e8 38 7d dc fa 45 85 ed 0f 84 28 d9 ff ff e8 aa 7b dc fa <0f> 0b e9 1c d9 ff ff 48 c7 c3 ff ff ff ff 48 c7 85 70 fe ff ff ff
RSP: 0018:ffffc9000808eb70 EFLAGS: 00010212
RAX: 0000000000040000 RBX: 0000000000000068 RCX: ffffc90005fa2000
RDX: 00000000000011d6 RSI: ffffffff8698ab56 RDI: 0000000000000005
RBP: ffffc9000808edd0 R08: ffff88805948c340 R09: fffffbfff165eba8
R10: fffffbfff165eba7 R11: ffffffff8b2f5d3f R12: 0000000000000002
R13: 0000000000000001 R14: 000000000000e780 R15: ffff8880714a4180
 tcp_rcv_established+0x6dd/0x1e90 net/ipv4/tcp_input.c:5701
 tcp_v4_do_rcv+0x619/0x8d0 net/ipv4/tcp_ipv4.c:1562
 sk_backlog_rcv include/net/sock.h:954 [inline]
 __release_sock+0x129/0x390 net/core/sock.c:2437
 release_sock+0x59/0x1c0 net/core/sock.c:2953
 gtp_encap_enable_socket+0x146/0x400 drivers/net/gtp.c:830
 gtp_encap_enable drivers/net/gtp.c:844 [inline]
 gtp_newlink+0x95/0xc60 drivers/net/gtp.c:666
 __rtnl_newlink+0x109e/0x1790 net/core/rtnetlink.c:3305
 rtnl_newlink+0x69/0xa0 net/core/rtnetlink.c:3363
 rtnetlink_rcv_msg+0x45e/0xaf0 net/core/rtnetlink.c:5424
 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477
 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5442
 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
 netlink_unicast+0x58c/0x7d0 net/netlink/af_netlink.c:1328
 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:639 [inline]
 sock_sendmsg+0xd7/0x130 net/socket.c:659
 ____sys_sendmsg+0x753/0x880 net/socket.c:2330
 ___sys_sendmsg+0x100/0x170 net/socket.c:2384
 __sys_sendmsg+0x105/0x1d0 net/socket.c:2417
 __do_sys_sendmsg net/socket.c:2426 [inline]
 __se_sys_sendmsg net/socket.c:2424 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2424
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45af49
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f1879a7cc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af49
RDX: 0000000000000000 RSI: 00000000200004c0 RDI: 0000000000000003
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1879a7d6d4
R13: 00000000004ca9a0 R14: 00000000004e3d80 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..