exited on signal 11 (no core dump - other error)

Hi

I observed something weird on Release 14.1.

When rebooting my dev machine, I got

---<<BOOT>>---
Copyright (c) 1992-2023 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 14.1-RELEASE releng/14.1-n267679-10e31f0946d8 GENERIC amd64
FreeBSD clang version 18.1.5 (https://github.com/llvm/llvm-project.git llvmorg-18.1.5-0-g617a15a9eac9)
...

em0: promiscuous mode enabled
em0: promiscuous mode disabled
Waiting (max 60 seconds) for system process `vnlru' to stop... done
Waiting (max 60 seconds) for system process `syncer' to stop... 
Syncing disks, vnodes remaining... 0 0 0 0 done
All buffers synced.
pid 50599 (devd), jid 0, uid 0: exited on signal 11 (no core dump - other error)
pid 35393 (getty), jid 0, uid 0: exited on signal 11 (no core dump - other error)
pid 36947 (getty), jid 0, uid 0: exited on signal 11 (no core dump - other error)
pid 37990 (getty), jid 0, uid 0: exited on signal 11 (no core dump - other error)
pid 80885 (sshd), jid 0, uid 1001: exited on signal 11 (no core dump - bad address)
pid 79883 (sshd), jid 0, uid 0: exited on signal 11 (no core dump - bad address)
pid 14245 (sshd), jid 0, uid 0: exited on signal 11 (no core dump - bad address)
pid 49213 (ntpd), jid 0, uid 123: exited on signal 11 (no core dump - other error)
pid 37382 (getty), jid 0, uid 0: exited on signal 11 (no core dump - other error)
pid 35315 (getty), jid 0, uid 0: exited on signal 11 (no core dump - other error)
pid 21366 (powerd), jid 0, uid 0: exited on signal 11 (no core dump - other error)
pid 35735 (getty), jid 0, uid 0: exited on signal 11 (no core dump - other error)
pid 36339 (getty), jid 0, uid 0: exited on signal 11 (no core dump - other error)
pid 37346 (getty), jid 0, uid 0: exited on signal 11 (no core dump - other error)
Uptime: 4d1h33m9s
ukbd0: detached
uhub0: detached
---<<BOOT>>---

IIUC all processes will get signal to quit on system reboot. But what does the
signal 11 mean ? Is it EDEADLK in sys/sys/errno.h ?

If yes, then why they get dead locked ?


Best regards,
Zhenlei