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Date:      Tue, 07 Feb 2023 15:10:25 +0000
From:      bugzilla-noreply@freebsd.org
To:        fs@FreeBSD.org
Subject:   [Bug 267028] kernel panics when booting with ZFS and amdgpu.ko (both are required)
Message-ID:  <bug-267028-3630-EWVxTdcaIn@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-267028-3630@https.bugs.freebsd.org/bugzilla/>
References:  <bug-267028-3630@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D267028

--- Comment #50 from George Mitchell <george@m5p.com> ---
Created attachment 239967
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D239967&action=
=3Dedit
Crash after loading vboxnetflt early by hand

Since the previous crash included a reference to vboxnetflt.ko, I experimen=
ted
a few times with amdgpu.ko added to my kld_lst in /etc/rc.conf, and loading
vboxnetflt by hand after booting to single user mode.

I think it's pretty clear at this point that there is no problem in ZFS cod=
e.=20
It's a lock mismanagement problem of some sort in amggpu.ko (from
graphics/drm-510-kmod).  If I have permission to change the assignee of this
bug, I will.

--=20
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