From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with ESMTP id 5BCBE8D003A for ; Wed, 19 Jan 2011 20:10:44 -0500 (EST) Date: Thu, 20 Jan 2011 02:10:26 +0100 From: Johannes Weiner Subject: Re: 2.6.38-rc1 problems with khugepaged Message-ID: <20110120011026.GJ2232@cmpxchg.org> References: <20110119155954.GA2272@kryptos.osrc.amd.com> <20110119214523.GF2232@cmpxchg.org> <20110120000147.GR9506@random.random> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20110120000147.GR9506@random.random> Sender: owner-linux-mm@kvack.org To: Andrea Arcangeli Cc: werner , Borislav Petkov , Ilya Dryomov , linux-mm , linux-kernel@vger.kernel.org List-ID: On Thu, Jan 20, 2011 at 01:01:47AM +0100, Andrea Arcangeli wrote: > On Wed, Jan 19, 2011 at 10:45:23PM +0100, Johannes Weiner wrote: > > Hi, > > > > On Wed, Jan 19, 2011 at 04:59:54PM +0100, Borislav Petkov wrote: > > > Adding some more parties to CC. > > > > > > On Wed, Jan 19, 2011 at 09:45:25AM -0400, werner wrote: > > > > ** Help Help Help *** > > > > > > > > My computer crashs on booting ... :( :( > > > > That sucks! > > > > I cross-compiled for 32-bit and was able to match up the disassembly > > against the code line from your oops report. Apparently the pte was > > an invalid pointer, and it makes perfect sense: we unmap the highpte > > _before_ we access the pointer again for __collapse_huge_page_copy(). > > > > Can you test with this fix applied? It is only compile-tested, I too > > have no 32-bit installations anymore. > > Thanks Johannes, I already sent the same fix a few minutes ago, it is > also confirmed to work from Ilya in Message-ID: > <20110119224950.GA3429@kwango.lan.net> Actually, I sent it half an hour before you ;-) But good to see that it fixes the problem. Hannes -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org