linux-kernel - Re: [Bugme-new] [Bug 9906] New: Weird hang with NPTL and SIGPROF.

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Date:	Thu, 7 Feb 2008 10:53:19 -0500 (EST)
From:	Parag Warudkar <parag.warudkar@...il.com>
To:	Alejandro Riveira Fernández 
	<ariveira@...il.com>
cc:	parag.warudkar@...il.com, Frank Mayhar <fmayhar@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	bugme-daemon@...zilla.kernel.org, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Roland McGrath <roland@...hat.com>,
	Jakub Jelinek <jakub@...hat.com>
Subject: Re: [Bugme-new] [Bug 9906] New: Weird hang with NPTL and SIGPROF.



On Thu, 7 Feb 2008, Alejandro Riveira Fernández wrote:

> gcc --version
> 
> gcc-4.2 (GCC) 4.2.1 (Ubuntu 4.2.1-5ubuntu4)
>  
> If some fields are empty or look unusual you may have an old version.
> Compare to the current minimal requirements in Documentation/Changes.
>  
> Linux Varda 2.6.24 #2 SMP PREEMPT Fri Jan 25 01:05:47 CET 2008 x86_64 GNU/Linux
>
So x86+SMP+GnuC-4.1.2+Glibc-2.5 = Not reproducible.

   x86_64+SMP+PREEMPT+GnuC-4.1.2+Glibc-2.5 = Reproducible.	

Not sure what the original reporter's $ARCH was.

So next thing worthwhile to try might be to disable PREEMPT and see if 
that cures it.

Parag