RAX: ffffffffffffffda RBX: 00007fd0a52946d4 RCX: 0000000000455979
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000016
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000017
R13: 000000000000045c R14: 00000000006fa940 R15: 000000000000001c
WARNING: CPU: 0 PID: 27762 at fs/exportfs/expfs.c:96 clear_disconnected fs/exportfs/expfs.c:96 [inline]
WARNING: CPU: 0 PID: 27762 at fs/exportfs/expfs.c:96 reconnect_path+0x515/0x6f0 fs/exportfs/expfs.c:232
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 27762 Comm: syz-executor2 Not tainted 4.17.0-rc3+ #31
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:ffff8801a6507af0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000020 RCX: ffffc9000b50b000
RDX: 0000000000040000 RSI: ffffffff8244e935 RDI: ffff8801ceb631a0
RBP: ffff8801a6507b40 R08: ffff88018d7c0100 R09: ffff8801a6507748
R10: 0000000000000003 R11: 0000000000000000 R12: ffff8801ceb63160
R13: ffff8801ceb63160 R14: dffffc0000000000 R15: ffff8801ab6e1020
 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: 0033:0x455979
RSP: 002b:00007fd0a5293c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007fd0a52946d4 RCX: 0000000000455979
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000016
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000017
R13: 000000000000045c R14: 00000000006fa940 R15: 000000000000001c
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..