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Date:      Tue, 16 Jul 2019 18:41:37 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 239245] r350026 will panic on ppc64 PowerMac G5 in vm_phys_enqueue_contig
Message-ID:  <bug-239245-227-jefV05P1By@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-239245-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-239245-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239245

Mark Millard <marklmi26-fbsd@yahoo.com> changed:

           What    |Removed                     |Added
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                 CC|                            |marklmi26-fbsd@yahoo.com

--- Comment #7 from Mark Millard <marklmi26-fbsd@yahoo.com> ---
(In reply to Mark Johnston from comment #5)

I tried but failed to repeat the original problem first: it
booted just fine, making such output from my context probably
not all that useful. Details follow.

I grabbed materials from:

https://artifact.ci.freebsd.org/snapshot/head/r350055/powerpc/powerpc64/

and put themn on a SSD parition for a 16 GiByte PowerMac G5
quad. It was unchanged, not even editing of /etc/fstab :
just tar expansion of the .txz files after a newfs -U -t .
(So I had to enter ufs:/dev/ada0s3 when prompted.)

But it booted just fine. Interestingly, uname -apKU reports
itself as being r350056 (not r350055). The revision.txt
showed r350055. (So artifact's version indications can be
wrong?)

Possibilities for why it boots include:

A) The amount of RAM matters.
B) Some FreeBSD configuration that causes differing activity
   matters.
C) ?

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