netlink: 2 bytes leftover after parsing attributes in process `syz-executor5'.
device syz3 entered promiscuous mode
netlink: 2 bytes leftover after parsing attributes in process `syz-executor5'.
------------[ cut here ]------------
WARNING: CPU: 1 PID: 11765 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: 1 PID: 11765 Comm: syz-executor2 Not tainted 4.14.0-rc5-mm1+ #20
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
 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:ffff8801c42073c0 EFLAGS: 00010216
RAX: 0000000000010000 RBX: ffff8801cc5c6000 RCX: ffffffff841965c4
RDX: 0000000000001282 RSI: ffffc900027ce000 RDI: ffff8801cc5c6000
RBP: ffff8801c42073d8 R08: 000000008933a7bf R09: 0000000000000002
R10: ffff8801cc5c6964 R11: 0000000089339b79 R12: 00000000fffffffd
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8801cc5c6000
 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
 sock_write_iter+0x31a/0x5d0 net/socket.c:911
 call_write_iter include/linux/fs.h:1770 [inline]
 new_sync_write fs/read_write.c:468 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:481
 vfs_write+0x189/0x510 fs/read_write.c:543
 SYSC_write fs/read_write.c:588 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:580
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x452869
RSP: 002b:00007f142b129be8 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 0000000000452869
RDX: 000000000000009f RSI: 0000000020ce6000 RDI: 0000000000000013
RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f66e0
R13: 00000000ffffffff R14: 00007f142b12a6d4 R15: 0000000000000010
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..