linux-kernel - Re: [Bug #12505] 2.6.29-rc1 Firefox crashing on page load

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Message-ID: <20090204164623.GE25996@elte.hu>
Date:	Wed, 4 Feb 2009 17:46:23 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Justin Mattock <justinmattock@...il.com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>,
	Justin Madru <jdm64@...ab.com>
Subject: Re: [Bug #12505] 2.6.29-rc1 Firefox crashing on page load


* Justin Mattock <justinmattock@...il.com> wrote:

> On Wed, Feb 4, 2009 at 2:24 AM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> >
> > The following bug entry is on the current list of known regressions
> > from 2.6.28.  Please verify if it still should be listed and let me know
> > (either way).
> >
> >
> > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12505
> > Subject         : 2.6.29-rc1 Firefox crashing on page load
> > Submitter       : Justin Madru <jdm64@...ab.com>
> > Date            : 2009-01-16 20:56 (20 days old)
> > First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4217458dafaa57d8e26a46f5d05ab8c53cf64191
> > References      : http://marc.info/?l=linux-kernel&m=123213941914274&w=4
> > Handled-By      : Justin P. Mattock <justinmattock@...il.com>
> >
> >
> >
> 
> Well the hardest for this, was to reproduce
> the error.(never did). I guess it can be taken
> of if there was a patch for the fix, and the patch
> made it into the main tree. but if this  is a firefox
> issue, then a report needs to be filed with them.
> so overall my answer is "I don't know."
> :^)

the error is spurious because gcc randomly stomps on user register state so 
the effects can be rather random and unpredictable.

The fix:

 552b8aa: Revert "x86: signal: change type of paramter for sys_rt_sigreturn()"

was included in -rc2 already, so please test latest -git whether you can see 
any such troubles.

	Ingo
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