[Bug 279887] 9pfs kernel page fault on shutdown on a bhyveload(8) or UEFI-booted FreeBSD VM

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 13 Jul 2024 01:50:38 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=279887

--- Comment #4 from Michael Dexter <editor@callfortesting.org> ---
(In reply to Danilo Egea Gondolfo from comment #3)
File to patch: /usr/src/sys/fs/p9fs/p9fs_vnops.c
Patching file /usr/src/sys/fs/p9fs/p9fs_vnops.c using Plan A...
Hunk #1 succeeded at 125.
done

(buildkernel/installkernel)
(boot)

root@freebsd:~ # uname -a
FreeBSD freebsd 15.0-CURRENT FreeBSD 15.0-CURRENT #0: Sat Jul 13 01:43:28 UTC
2024     root
@t14:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64
root@freebsd:~ # reboot
Jul 13 01:46:23 freebsd syslogd: exiting on signal 15
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 done
All buffers synced.
Uptime: 54s
root@t14:~/imagine-work # sh: turning off NDELAY mode

Yes! No page fault on shutdown!

Hopefully that's it. Good work!

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