Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754758Ab1BMRkG (ORCPT ); Sun, 13 Feb 2011 12:40:06 -0500 Received: from smtp1.linux-foundation.org ([140.211.169.13]:37540 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751155Ab1BMRkC (ORCPT ); Sun, 13 Feb 2011 12:40:02 -0500 MIME-Version: 1.0 In-Reply-To: References: From: Linus Torvalds Date: Sun, 13 Feb 2011 09:39:39 -0800 Message-ID: Subject: Re: Heads up Linux 2.6.38-rc4 compile problems. To: Alex Riesen , "Eric W. Biederman" Cc: David Miller , Linux Kernel Mailing List Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1160 Lines: 28 On Wed, Feb 9, 2011 at 8:02 AM, Linus Torvalds wrote: > > Well, the thing is, Eric said he was using ext4. > > And there are absolutely no changes I can see after -rc3 that would > affect anything like this. Hmm. Eric - mind testing current -git? J. R. Okajima found a possible problem with the new RCU filename lookup, which could corrupt the filp_cache. I'd expect the normal result to be an oops, but maybe there could be memory corruption. And the easiest way to trigger it would probably be to have lots of concurrent fs activity with renames. Now, it's not new to -rc4: the whole rcu lookup thing was merged into -rc1. But since I still don't see anything that looks likely to be introduced after -rc3, it might not hurt to think that maybe it's just rare enough that you just thought -rc3 was ok, and then you were unlucky with -rc4. Linus -- 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/