Re: 2.6.23: random segfaults

[Manuel L. <ma...@ro...>]

On Wed, Oct 17, 2007 at 01:48:51PM +0900, Paul Mundt wrote:
> On Tue, Oct 16, 2007 at 01:52:31PM +0200, Manuel Lauss wrote:
> > With 2.6.23 my board(s) are again experiencing random segfaults and
> > pipe failures (compilejobs randomly abort with bash segfaulting
> > and/or gcc/make stop with "too many commandline options" errors, ...)
> > I tracked it to these two commits; reverting both stabilizes the system
> > again:
> > 
> What CPUs are you running on, and what sort of cache configuration are
> you using? Presumably write-through caching also works fine?

7760 with "standard" config: write-back, direct-mapped disabled, no SQ, no
OCRAM.  Haven't tried WT; kernels with WT used to never boot. I'll give it a shot. 
 
> I don't experience any breakage on a 4-way d-cache, but there have been
> problem reports on other CPUs with 2-way. Specifically it seems to be a
> cache colouring problem, bumping up the page size also corrects the
> issue.
> 
> I'll see about reproducing and debugging it on a 2-way dcache..

Thanks you very much!

	Manuel Lauss