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SubjectRe: 2.6.12-rc2-mm3 regression - certain applications get SIGSEGV but are fine with 2.6.12-rc2-mm2
On Fri, 29 Apr 2005, Andrew Morton wrote:

> 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
>
> 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.
>
My bad. Sorry about that.

--
Jesper

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