handle_userfault: 52 callbacks suppressed
FAULT_FLAG_ALLOW_RETRY missing 30
netlink: 'syz-executor5': attribute type 5 has an invalid length.
WARNING: CPU: 0 PID: 22034 at net/netlink/af_netlink.c:2398 netlink_ack+0x625/0xa10 net/netlink/af_netlink.c:2396
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 22034 Comm: syz-executor5 Not tainted 4.15.0-rc4-mm1+ #49
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1dc/0x200 kernel/panic.c:547
 report_bug+0x211/0x2d0 lib/bug.c:184
 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:177
 fixup_bug arch/x86/kernel/traps.c:246 [inline]
 do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1079
RIP: 0010:netlink_ack+0x625/0xa10 net/netlink/af_netlink.c:2396
RSP: 0018:ffff8801c1caf848 EFLAGS: 00010212
RAX: 0000000000010000 RBX: ffff8801d88fb540 RCX: ffffffff84456735
RDX: 0000000000000771 RSI: ffffc90001c76000 RDI: ffff8801d88fb610
RBP: ffff8801c1caf900 R08: ffffed003ace9055 R09: ffffed003ace9055
R10: 0000000000000003 R11: ffffed003ace9054 R12: ffff8801d01196dc
R13: ffff8801d6748280 R14: ffff8801d11a0e40 R15: 1ffff10038395f0f
 netlink_rcv_skb+0x369/0x460 net/netlink/af_netlink.c:2447
 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4540
 netlink_unicast_kernel net/netlink/af_netlink.c:1308 [inline]
 netlink_unicast+0x4be/0x6a0 net/netlink/af_netlink.c:1334
 netlink_sendmsg+0xa4a/0xe60 net/netlink/af_netlink.c:1897
 sock_sendmsg_nosec net/socket.c:628 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:638
 sock_write_iter+0x31a/0x5d0 net/socket.c:907
 call_write_iter include/linux/fs.h:1776 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:482
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:581
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452ac9
RSP: 002b:00007fe53fb62c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9
RDX: 00000000000001a9 RSI: 0000000020800e57 RDI: 0000000000000013
RBP: 0000000000000524 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4c00
R13: 00000000ffffffff R14: 00007fe53fb636d4 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..