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

[bugzilla-noreply at freebsd.org]

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

Bjoern A. Zeeb <bz at FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|bugs at FreeBSD.org            |jhb at FreeBSD.org

--- Comment #6 from Bjoern A. Zeeb <bz at FreeBSD.org> ---
(In reply to John Baldwin from comment #5)

root at rabbit4:~ # dd bs=1 if=/dev/mem iseek=0xe8500 count=48 | ndisasm -u -
48+0 records in
48+0 records out
48 bytes transferred in 0.001682 secs (28538 bytes/sec)
00000000  5F                pop edi
00000001  3332              xor esi,[edx]
00000003  5F                pop edi
00000004  10850E000001      adc [ebp+0x100000e],al
0000000A  3900              cmp [eax],eax
0000000C  0000              add [eax],al
0000000E  0000              add [eax],al
00000010  FF00              inc dword [eax]
00000012  0000              add [eax],al
00000014  0000              add [eax],al
00000016  0000              add [eax],al
00000018  0000              add [eax],al
0000001A  0000              add [eax],al
0000001C  0000              add [eax],al
0000001E  0000              add [eax],al
00000020  3D24504349        cmp eax,0x49435024
00000025  B080              mov al,0x80
00000027  752D              jnz 0x56
00000029  B081              mov al,0x81
0000002B  0ADB              or bl,bl
0000002D  7527              jnz 0x56
0000002F  E8                db 0xe8

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