RDX: 0000000000400000 RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd412beb3f R14: 00007ff51661a9c0 R15: 000000000075bf2c
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6965 at fs/exportfs/expfs.c:96 dget include/linux/dcache.h:318 [inline]
WARNING: CPU: 1 PID: 6965 at fs/exportfs/expfs.c:96 clear_disconnected fs/exportfs/expfs.c:92 [inline]
WARNING: CPU: 1 PID: 6965 at fs/exportfs/expfs.c:96 reconnect_path+0x3e7/0x590 fs/exportfs/expfs.c:232
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 6965 Comm: syz-executor.2 Not tainted 4.12.0+ #0
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+0x145/0x1e1 lib/dump_stack.c:52
 panic+0x1a9/0x349 kernel/panic.c:180
 __warn.cold.8+0x11a/0x14b kernel/panic.c:541
 report_bug+0x1a3/0x227 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:190 [inline]
 do_trap_no_signal arch/x86/kernel/traps.c:224 [inline]
 do_trap+0x1ef/0x2d0 arch/x86/kernel/traps.c:273
 do_error_trap+0x11f/0x390 arch/x86/kernel/traps.c:310
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:323
 invalid_op+0x1e/0x30 arch/x86/entry/entry_64.S:845
RIP: 0010:clear_disconnected fs/exportfs/expfs.c:96 [inline]
RIP: 0010:reconnect_path+0x3e7/0x590 fs/exportfs/expfs.c:232
RSP: 0018:ffff880101c1fc50 EFLAGS: 00010246
RAX: 1ffff10022e35ee4 RBX: ffff8801171af6e0 RCX: 1ffff100237f315a
RDX: 1ffff10022e35ee4 RSI: 0000000000000001 RDI: ffff8801171af720
RBP: ffff880101c1fca0 R08: 0000000000000001 R09: 0000000000000000
R10: ffff88011bf98b08 R11: ffff88011bf98280 R12: ffff8801171af6e0
R13: dffffc0000000000 R14: ffffed0020413a85 R15: ffff8801171af6e0
 exportfs_decode_fh+0x1d6/0x600 fs/exportfs/expfs.c:448
 do_handle_to_path fs/fhandle.c:152 [inline]
 handle_to_path fs/fhandle.c:207 [inline]
 do_handle_open+0x2f0/0x7c0 fs/fhandle.c:223
 SYSC_open_by_handle_at fs/fhandle.c:265 [inline]
 SyS_open_by_handle_at+0xc/0x10 fs/fhandle.c:256
 entry_SYSCALL_64_fastpath+0x23/0xc2
RIP: 0033:0x45a669
RSP: 002b:00007ff516619c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007ff516619c90 RCX: 000000000045a669
RDX: 0000000000400000 RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd412beb3f R14: 00007ff51661a9c0 R15: 000000000075bf2c
Kernel Offset: disabled
Rebooting in 86400 seconds..