linux-kernel - Re: Fwd: Fwd: laptop / computer hardlocks during execution of 32bit applications(binaries) on 64bit system (Gentoo)

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Date:	Thu, 10 Jan 2008 08:08:42 -0500
From:	Ed Tomlinson <edt@....ca>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Matthew <jackdachef@...il.com>, "H. Peter Anvin" <hpa@...or.com>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: Fwd: Fwd: laptop / computer hardlocks during execution of 32bit applications(binaries) on 64bit system (Gentoo)

On January 10, 2008, Ingo Molnar wrote:
> 
> * Matthew <jackdachef@...il.com> wrote:
> 
> > this also happens with rc7-based kernels, btw
> 
> hm, exactly what rc7 based kernel? Vanilla 2.6.24-rc7, built by you? Or 
> any patches ontop of it? (x86.git perhaps?)

Matthew  is not alone with this problem.  I have it too.  Its not new here.  Its
been happening as long as I have had gentoo amd64 installed.  It can be hard
to reproduce but eventually, when 32 bit apps are used, my box bricks.  There is
nothing in the logs (nor on a serial console) - the box just freezes.  

My kernel is _not_ tainted.  The kernel is currently 2.6.23-gentoo-r5-crc with 
the latest cfs backport applied; it does not seem to be critical though as it has
happen with all kernels I have tried (mm, linux and gentoo varients).  

The processor is:

processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 4
model name      : AMD Athlon(tm) 64 Processor 2800+
stepping        : 10
cpu MHz         : 1808.802
cache size      : 512 KB
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext lm 3dnowext 3dnow rep_good
bogomips        : 3620.77
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp

I asked about this lkml before and was told it was probably a cpu/hardware issue...  Its 
interesting that Matthew is also running gentoo.

Thanks,
Ed Tomlinson
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