RAX: ffffffffffffffda RBX: 00007f4fdfab96d4 RCX: 0000000000455329
RDX: 0000000000432403 RSI: 0000000020000000 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000417 R14: 00000000006f92c8 R15: 000000000000001d
WARNING: CPU: 1 PID: 13407 at fs/exportfs/expfs.c:96 clear_disconnected fs/exportfs/expfs.c:96 [inline]
WARNING: CPU: 1 PID: 13407 at fs/exportfs/expfs.c:96 reconnect_path+0x515/0x6f0 fs/exportfs/expfs.c:232
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 13407 Comm: syz-executor7 Not tainted 4.17.0-rc1+ #6
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+0x1b9/0x294 lib/dump_stack.c:113
 panic+0x22f/0x4de kernel/panic.c:184
 __warn.cold.8+0x163/0x1b3 kernel/panic.c:536
 report_bug+0x252/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1de/0x490 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992
RIP: 0010:clear_disconnected fs/exportfs/expfs.c:96 [inline]
RIP: 0010:reconnect_path+0x515/0x6f0 fs/exportfs/expfs.c:232
RSP: 0018:ffff880189a67af0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000020 RCX: ffffc90003109000
RDX: 0000000000040000 RSI: ffffffff82438f35 RDI: ffff8801da892e00
RBP: ffff880189a67b40 R08: ffff880187c54280 R09: ffffed003b6246c2
R10: 0000000000000003 R11: 0000000000000000 R12: ffff8801da892dc0
R13: ffff8801da892dc0 R14: dffffc0000000000 R15: ffff88018f33ac20
 exportfs_decode_fh+0x3cd/0x6d0 fs/exportfs/expfs.c:457
 do_handle_to_path fs/fhandle.c:152 [inline]
 handle_to_path fs/fhandle.c:207 [inline]
 do_handle_open+0x3f8/0x950 fs/fhandle.c:223
 __do_sys_open_by_handle_at fs/fhandle.c:265 [inline]
 __se_sys_open_by_handle_at fs/fhandle.c:256 [inline]
 __x64_sys_open_by_handle_at+0x76/0xb0 fs/fhandle.c:256
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455329
RSP: 002b:00007f4fdfab8c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007f4fdfab96d4 RCX: 0000000000455329
RDX: 0000000000432403 RSI: 0000000020000000 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000417 R14: 00000000006f92c8 R15: 000000000000001d
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..