Date: Fri, 29 Apr 2005 03:17:08 -0700
From: Andrew Morton <akpm@osdl.org>
To: Alexander Nyberg <alexn@dsv.su.se>
Cc: juhl-lkml@dif.dk, linux-kernel@vger.kernel.org
Subject: Re: 2.6.12-rc2-mm3 regression - certain applications get SIGSEGV
 but are fine with 2.6.12-rc2-mm2
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Alexander Nyberg <alexn@dsv.su.se> wrote:
>
> tis 2005-04-19 klockan 11:33 +0200 skrev Jesper Juhl:
> > Everything is fine with 2.6.12-rc2, 2.6.12-rc2-mm1, 2.6.12-rc2-mm2 & 
> > earlier kernels as well, but 2.6.12-rc2-mm3 seems to have a problem.
> > I don't know what's causing this, all I can do at the moment is describe 
> > the symptoms.
> > 
> > Certain applications (krootimage and ksplash from KDE 3.4 are 100% 
> > reproducible test cases) that used to run fine have started crashing with 
> > SIGSEGV on 2.6.12-rc2-mm3. I see nothing suspicious in dmesg.
> > I'm including dmesg output as well as strace output from krootimage and 
> > ksplash below.
> > If someone could give me a hint as to what the cause of this could be or 
> > what to try in order to track it down I'd appreciate it.
> > This is 100% reproducible.
> 
> Try backing out
> http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.12-rc2/2.6.12-rc2-mm3/broken-out/sched-unlocked-context-switches.patch
> 

y'know, if I'd been cc'ed on this email I'd have saved three hours.

Ho hum.
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