Subject: Re: Kernel locks up after calling kernel_execve()

From: "Gerhard Pircher" <[email-masked]>
Date: Sat, 10 Nov 2007 18:11:30 +0100

-------- Original-Nachricht --------
> Datum: Fri, 09 Nov 2007 18:50:29 +1100
> Von: Benjamin Herrenschmidt <[email-masked]>
> An: Gerhard Pircher <[email-masked]>
> CC: [email-masked]
> Betreff: Re: Kernel locks up after calling kernel_execve()

> 
> > I tried to use /bin/sh as init program and was able to enter a command,
> > but then the machine locked up, too.
> > Could that be a problem with a CPU sleeping/idle code?
> 
> That's possibly an issue, try disabling power save if any for that CPU
> type. If it worked and broke, you may have to bisect tho.
I disabled the powersaving code by adding powersave=off to the kernel's
command line, but it didn't help. It seems to lockup whenever it tries to
access a filesystem.
Is there a way to debug it without a hardware debugger or can you
recommend a cheap hardware debugger?

Gerhard
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