------------[ cut here ]------------
WARNING: CPU: 0 PID: 23566 at net/ipv4/tcp_input.c:889 tcp_update_reordering+0x224/0x280 net/ipv4/tcp_input.c:889
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 23566 Comm: syz-executor5 Not tainted 4.14.0-rc5-next-20171018+ #36
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1c4/0x1e0 kernel/panic.c:546
 report_bug+0x211/0x2d0 lib/bug.c:183
 fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:177
QAT: Invalid ioctl
 do_trap_no_signal arch/x86/kernel/traps.c:211 [inline]
 do_trap+0x260/0x390 arch/x86/kernel/traps.c:260
 do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:297
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:310
 invalid_op+0x18/0x20 arch/x86/entry/entry_64.S:905
RIP: 0010:tcp_update_reordering+0x224/0x280 net/ipv4/tcp_input.c:889
RSP: 0018:ffff8801cfe87490 EFLAGS: 00010206
RAX: 0000000000010000 RBX: ffff8801c9da2a80 RCX: ffffffff841955c4
QAT: Invalid ioctl
RDX: 0000000000001160 RSI: ffffc90004304000 RDI: ffff8801c9da2a80
RBP: ffff8801cfe874a8 R08: 000000007ea06f9c R09: 0000000000000002
R10: ffff8801c9da33e4 R11: 000000007ea06ded R12: 00000000fffffffb
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8801c9da2a80
 tcp_sacktag_write_queue+0x1760/0x2240 net/ipv4/tcp_input.c:1862
 tcp_ack+0x281b/0x5100 net/ipv4/tcp_input.c:3640
 tcp_rcv_established+0x672/0x18a0 net/ipv4/tcp_input.c:5486
 tcp_v4_do_rcv+0x2ab/0x7d0 net/ipv4/tcp_ipv4.c:1460
 sk_backlog_rcv include/net/sock.h:909 [inline]
 __release_sock+0x124/0x360 net/core/sock.c:2264
 release_sock+0xa4/0x2a0 net/core/sock.c:2776
 tcp_sendmsg+0x3a/0x50 net/ipv4/tcp.c:1462
 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:763
 sock_sendmsg_nosec net/socket.c:632 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:642
 SYSC_sendto+0x352/0x5a0 net/socket.c:1749
 SyS_sendto+0x40/0x50 net/socket.c:1717
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x452869
RSP: 002b:00007fb4e8986be8 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 0000000000452869
RDX: 000000000000004e RSI: 0000000020b2c000 RDI: 0000000000000014
RBP: 0000000000000082 R08: 000000002066a000 R09: 0000000000000010
R10: 00000000000048c0 R11: 0000000000000212 R12: 0000000000000000
R13: 0000000000a6f7ff R14: 00007fb4e89879c0 R15: 0000000000000001
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..