[Bug 232288] i386 boot time panic of head on amd64 machine (PCI BIOS search, 0x49435024)

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Wed Oct 17 22:30:25 UTC 2018


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=232288

--- Comment #2 from John Baldwin <jhb at 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=1
if=/dev/mem iseek=0xe8510 count=32 | ndisasm -U' (have to install devel/nasm)
to get the disassembly of the instruction that faulted?  It seems like the
first instruction faulted which seems odd.

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