Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755799AbXJCJNV (ORCPT ); Wed, 3 Oct 2007 05:13:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753862AbXJCJNN (ORCPT ); Wed, 3 Oct 2007 05:13:13 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:52927 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753513AbXJCJNM (ORCPT ); Wed, 3 Oct 2007 05:13:12 -0400 Date: Wed, 3 Oct 2007 11:12:57 +0200 From: Ingo Molnar To: Linus Torvalds Cc: Linux Kernel Mailing List , Greg KH , Alexander Viro , Peter Zijlstra Subject: Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..) Message-ID: <20071003091257.GA15815@elte.hu> References: <20071003084607.GC32218@elte.hu> <20071003085022.GA6672@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071003085022.GA6672@elte.hu> User-Agent: Mutt/1.5.14 (2007-02-12) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -0.7 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-0.7 required=5.9 tests=BAYES_00,UPPERCASE_50_75 autolearn=no SpamAssassin version=3.1.7-deb -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] 0.8 UPPERCASE_50_75 message body is 50-75% uppercase Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1714 Lines: 57 * Ingo Molnar wrote: > nodev /debug debugfs rw 0 0 > ) = 290 > read(3, "", 4096) = 0 > close(3) = 0 > > there's nothing particularly interesting in it. (perhaps debugfs) disabling debugfs makes the crash go away so it's debugfs related. The .config delta is below. Ingo --- .config.broken.000 2007-10-03 10:28:14.000000000 +0200 +++ .config.good.000 2007-10-03 11:11:18.000000000 +0200 @@ -85,7 +85,7 @@ CONFIG_MODULE_SRCVERSION_ALL=y # CONFIG_KMOD is not set CONFIG_BLOCK=y # CONFIG_LBD is not set -CONFIG_BLK_DEV_IO_TRACE=y +# CONFIG_BLK_DEV_IO_TRACE is not set CONFIG_LSF=y CONFIG_BLK_DEV_BSG=y @@ -631,7 +631,6 @@ CONFIG_CFG80211=y CONFIG_WIRELESS_EXT=y CONFIG_MAC80211=y CONFIG_MAC80211_LEDS=y -CONFIG_MAC80211_DEBUGFS=y # CONFIG_MAC80211_DEBUG is not set CONFIG_IEEE80211=m CONFIG_IEEE80211_DEBUG=y @@ -1689,7 +1688,7 @@ CONFIG_TRACE_IRQFLAGS_SUPPORT=y CONFIG_ENABLE_MUST_CHECK=y # CONFIG_MAGIC_SYSRQ is not set CONFIG_UNUSED_SYMBOLS=y -CONFIG_DEBUG_FS=y +# CONFIG_DEBUG_FS is not set # CONFIG_HEADERS_CHECK is not set CONFIG_DEBUG_KERNEL=y CONFIG_DEBUG_SHIRQ=y @@ -1724,8 +1724,6 @@ CONFIG_FAULT_INJECTION=y # CONFIG_FAILSLAB is not set CONFIG_FAIL_PAGE_ALLOC=y CONFIG_FAIL_MAKE_REQUEST=y -CONFIG_FAULT_INJECTION_DEBUG_FS=y -CONFIG_FAULT_INJECTION_STACKTRACE_FILTER=y CONFIG_EARLY_PRINTK=y CONFIG_DEBUG_STACKOVERFLOW=y # CONFIG_DEBUG_STACK_USAGE is not set - 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/