From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@bugzilla.kernel.org Subject: [Bug 25832] kernel crashes upon resume if usb devices are removed when suspended Date: Sun, 6 Feb 2011 09:00:34 GMT Message-ID: <201102060900.p1690YIt027011@demeter1.kernel.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" To: linux-ext4@vger.kernel.org Return-path: Received: from demeter1.kernel.org ([140.211.167.39]:53618 "EHLO demeter1.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751843Ab1BFJAg (ORCPT ); Sun, 6 Feb 2011 04:00:36 -0500 Received: from demeter1.kernel.org (localhost.localdomain [127.0.0.1]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p1690ZMr027013 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sun, 6 Feb 2011 09:00:35 GMT In-Reply-To: Sender: linux-ext4-owner@vger.kernel.org List-ID: https://bugzilla.kernel.org/show_bug.cgi?id=25832 --- Comment #21 from rocko 2011-02-06 09:00:29 --- Could this possibly be a caching/stale pointer problem? In comment #10, FUSE was somehow involved in an ext4-fs operation after the fuse/ntfs partition was unmounted (and presumably its kernel FS memory freed). Wouldn't a fuse/ext4 combination only happen if the kernel incorrectly tried to access the freed ntfs/fuse memory data when subsequently trying to read/write the ext4 file system (or am I incorrect when I assume that FUSE would never be involved in ext4-fs operations?). Two of the other crashes happened when firefox and gnome-panel tried to access the home partition and failed - but the home partition _was_ present and therefore should have always been accessible. Could the kernel have got confused and been accessing access freed memory used for an absent external partition instead of the memory being used to cache data for the home partition? This might also explain why the chances of the kernel panic happening are much higher if there are multiple removed drives involved, ie because there is more chance of freed memory incorrectly being accessed. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug.