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Date:      Wed, 17 Oct 2018 22:30:23 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 232288] i386 boot time panic of head on amd64 machine (PCI BIOS search, 0x49435024)
Message-ID:  <bug-232288-227-ssnNk5URkI@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-232288-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-232288-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D232288

--- Comment #2 from John Baldwin <jhb@FreeBSD.org> ---
The panic was not in the C code, but in the BIOS code it called.  The page
fault information doesn't make much sense though.  The 0xe8510 is a physical
address of the BIOS function in question.  Can you do something like 'dd bs=
=3D1
if=3D/dev/mem iseek=3D0xe8510 count=3D32 | ndisasm -U' (have to install dev=
el/nasm)
to get the disassembly of the instruction that faulted?  It seems like the
first instruction faulted which seems odd.

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