autofs4:pid:14456:autofs4_fill_super: could not open pipe file descriptor
------------[ cut here ]------------
WARNING: CPU: 1 PID: 22 at net/batman-adv/bat_iv_ogm.c:588 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:588 [inline]
WARNING: CPU: 1 PID: 22 at net/batman-adv/bat_iv_ogm.c:588 batadv_iv_send_outstanding_bat_ogm_packet+0x611/0x6f0 net/batman-adv/bat_iv_ogm.c:1847
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 22 Comm: kworker/u4:1 Not tainted 4.14.232-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:588 [inline]
RIP: 0010:batadv_iv_send_outstanding_bat_ogm_packet+0x611/0x6f0 net/batman-adv/bat_iv_ogm.c:1847
libceph: connect [d::]:6789 error -101
RSP: 0018:ffff8880b55ffcf0 EFLAGS: 00010297
RAX: ffff8880b55ec5c0 RBX: ffff8880ac0cf708 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff8880947fb2b0
RBP: ffff888052e60080 R08: ffffffff8b9c3d08 R09: 00000000000405f6
R10: ffff8880b55ece70 R11: ffff8880b55ec5c0 R12: ffff8880947fb240
R13: ffff8880ac0cf6c0 R14: ffff88804fb6db00 R15: ffff8880ac0cf7a8
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
libceph: mon0 [d::]:6789 connect error
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Kernel Offset: disabled
Rebooting in 86400 seconds..