Re: 2.6.12-rc2-mm3 regression - certain applications get SIGSEGV but are fine with 2.6.12-rc2-mm2

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On Fri, 29 Apr 2005, Andrew Morton wrote:

> Date: Fri, 29 Apr 2005 03:17:08 -0700
> From: Andrew Morton <[email protected]>
> To: Alexander Nyberg <[email protected]>
> Cc: [email protected], [email protected]
> Subject: Re: 2.6.12-rc2-mm3 regression - certain applications get SIGSEGV but
>     are fine with 2.6.12-rc2-mm2
> 
> Alexander Nyberg <[email protected]> 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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