Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756117Ab1ETWyG (ORCPT ); Fri, 20 May 2011 18:54:06 -0400 Received: from mailout-de.gmx.net ([213.165.64.22]:40736 "HELO mailout-de.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752699Ab1ETWx6 convert rfc822-to-8bit (ORCPT ); Fri, 20 May 2011 18:53:58 -0400 X-Authenticated: #5108953 X-Provags-ID: V01U2FsdGVkX19trCQNaDxtuCS6/6bJxlxas4feSzO0KcGbvyn3vc KaO6q3Or39a3T1 From: Toralf =?iso-8859-15?q?F=F6rster?= To: Steven Rostedt Subject: Re: kernel 2.6.39 (user mode linux) crashes (2.6.38 works fine) Date: Sat, 21 May 2011 00:53:50 +0200 User-Agent: KMail/1.13.7 (Linux/2.6.38.6; KDE/4.6.3; i686; ; ) Cc: Darren Hart , "richard -rw- weinberger" , LKML , user-mode-linux-devel@lists.sourceforge.net References: <201105191526.31904.toralf.foerster@gmx.de> <1305907458.1465.23.camel@gandalf.stny.rr.com> <1305907896.1465.27.camel@gandalf.stny.rr.com> In-Reply-To: <1305907896.1465.27.camel@gandalf.stny.rr.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-15" Content-Transfer-Encoding: 8BIT Message-Id: <201105210053.51314.toralf.foerster@gmx.de> X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2682 Lines: 68 Steven Rostedt wrote at 18:11:36 > Could you apply these patches: > > 2092e6be WARN_ON_SMP(): Allow use in if() statements on UP > 29096202 futex: Fix WARN_ON() test for UP > > On top of this commit, and see if the problem goes away. What could have > happened, is that you have two bugs, with one of them fixed. If the git > bisect stumbled on this bug, it will show this one, even though later > on, this code was fixed. If you apply the above two patches and it works > again, then this isn't the bug you are looking for. I bisected it again and applied at every step those 2 commits, if commit 2e12978 was in the source too. Furthermore it was necessary to use a fresh instance of firefox every time to reproduce a now shomehow changed issue: the UML system wasn't longer reachable, neither ping nor ssh into it was possible as soon as I tried to point firefox to https://n22_uml/phpmyadmin/ and no crash occured any longer. Furthermore a previously opened ssh session to that UML hangs completely. Bisecting gave : git bisect badd123375425d7df4b6081a631fc1203fceafa59b2 is the first bad commit commit d123375425d7df4b6081a631fc1203fceafa59b2 Author: Thomas Gleixner Date: Wed Jan 26 21:32:01 2011 +0100 rwsem: Remove redundant asmregparm annotation Peter Zijlstra pointed out, that the only user of asmregparm (x86) is compiling the kernel already with -mregparm=3. So the annotation of the rwsem functions is redundant. Remove it. Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: David Howells Cc: Benjamin Herrenschmidt Cc: Matt Turner Cc: Tony Luck Cc: Heiko Carstens Cc: Paul Mundt Cc: David Miller Cc: Chris Zankel LKML-Reference: Signed-off-by: Thomas Gleixner :040000 040000 f373822625e4f5d03d89997cc9f06ef0e21c6d08 272479d3450a4924f3ad2d06a058d77c577ec0d4 M include :040000 040000 9294321acb9db51e4db72b8e7c95fbd1531a7f26 393fc63299ae482792439384485618a492619787 M lib /enjoy :-) -- MfG/Sincerely Toralf F?rster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 -- 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/