Bug on 2.6.26 - x86 VIA Nehemiah CentaurHauls processor cannot boot

From: Luis R. Rodriguez
Date: Mon Jul 21 2008 - 09:14:23 EST


This bug seems to be present since 2.6.22 [1], so hope we can get this
fixed ASAP. Let me know if you have patch suggestions I can test.

This crashes very early, I had to use earlyprintk to get it.

BUG: Int 6: CR2 00000000
EDI 00000000 ESI 0009f000 EBP 00000000 ESP c036ff60
EBX c03e6070 EDX 00000006 ECX 0000009f EAX c034d240
err 00000000 EIP c0387ac2 CS 00000060 flg 00010016
Stack: 00000000 00000000 c03b63d8 c037bb11 0001dff0 00003c00 c0399614 c03b6304
00822007 c037aeb4 c0304134 000001df c0304117 00000000 30303030 205d3030
00000000 c034c794 00000000 00000000 00822007 c02b921f c034c794 00000000
[ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.26 #1
BUG: Int 6: CR2 00000000
EDI 00000000 ESI c034c018 EBP 00000000 ESP c036feb8
EBX c036ff28 EDX 00000006 ECX c03e6070 EAX c034c018
err 00000000 EIP c013d922 CS 00000060 flg 00010016
Stack: c036ff28 c03e6070 c01305ef c0104a34 c036fffc c036e000 0009f000 00000002
0009f000 00000000 00000000 c0105969 00000000 c02bee94 c0310de8 c02b9129
00000000 c0303d6a 00000000 c034751d c03c7278 c0347faa 00000002 c0347feb
[ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.26 #1

node1-1:~# cat /proc/cpuinfo
processor : 0
vendor_id : CentaurHauls
cpu family : 6
model : 9
model name : VIA Nehemiah
stepping : 8
cpu MHz : 997.108
cache size : 64 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr cx8 sep mtrr pge cmov pat mmx
fxsr sse up rng rng_en ace ace_en
bogomips : 1996.49
clflush size : 32

You can get my config from:

http://www.winlab.rutgers.edu/~mcgrof/configs/config-2.6.26

It's basically debian based from 2.6.25-2 just updated for 2.6.26. Let
me know if I can provide more information.

[1] http://orbit-lab.org/wiki/Documentation/SupportedImages/baseline-8.3.ndz

Luis
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