Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760792AbYBGC6S (ORCPT ); Wed, 6 Feb 2008 21:58:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758922AbYBGC6D (ORCPT ); Wed, 6 Feb 2008 21:58:03 -0500 Received: from py-out-1112.google.com ([64.233.166.183]:45239 "EHLO py-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753162AbYBGC6B (ORCPT ); Wed, 6 Feb 2008 21:58:01 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:x-x-sender:reply-to:to:cc:subject:in-reply-to:message-id:references:user-agent:mime-version:content-type; b=RuilncXELHt9p8GRxTzdkdS9JzfbbHKoXcO9KRes07p0eEpEBSA8Cge3xx/W2fbXNvYLi2cAS01RPRRhrskQQ3nRasxx/cND9sONEglrrZiCk1EsgwC8szEhH3RK24a/Fm1736anaOyIyzk775JwXT1sywzHSqkCLwLT8phHUuU= Date: Wed, 6 Feb 2008 21:57:38 -0500 (EST) From: Parag Warudkar X-X-Sender: parag@mini.warudkars.net Reply-To: parag.warudkar@gmail.com To: Frank Mayhar cc: Andrew Morton , bugme-daemon@bugzilla.kernel.org, linux-kernel@vger.kernel.org, Ingo Molnar , Thomas Gleixner , Roland McGrath , Jakub Jelinek Subject: Re: [Bugme-new] [Bug 9906] New: Weird hang with NPTL and SIGPROF. In-Reply-To: <1202345893.8525.33.camel@peace.smo.corp.google.com> Message-ID: References: <20080206165045.89b809cc.akpm@linux-foundation.org> <1202345893.8525.33.camel@peace.smo.corp.google.com> User-Agent: Alpine 1.00 (LRH 882 2007-12-20) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1048 Lines: 31 On Wed, 6 Feb 2008, Frank Mayhar wrote: > On Wed, 2008-02-06 at 16:50 -0800, Andrew Morton wrote: > > It's probably better to handle this one via email, so please send that > > testcase vie reply-to-all to this email, thanks. > > Testcase attached. > > Build with > gcc -D_GNU_SOURCE -c hangc-2.c -o hangc-2.o > gcc -lpthread -o hangc-2 hangc-2.o > > Run with > hangc-2 4500 4500 FWIW this is not reproducible on 2.6.24/x86/CentOS-51. (I tried running it nearly 1500 times in a loop.) Assuming those many tries are sufficient to reproduce this bug, there seems to be something specific to the environment/architecture/configuration that's necessary to trigger it. It might be helpful to provide full details like glibc version, compiler version, .config etc. Parag -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/