From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754321Ab2GPVcX (ORCPT ); Mon, 16 Jul 2012 17:32:23 -0400 Received: from zeniv.linux.org.uk ([195.92.253.2]:49594 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753466Ab2GPVcW (ORCPT ); Mon, 16 Jul 2012 17:32:22 -0400 Date: Mon, 16 Jul 2012 22:32:18 +0100 From: Al Viro To: Linus Torvalds Cc: Dave Jones , Linux Kernel Subject: Re: 3.5-rc6 dentry related GPF Message-ID: <20120716213218.GQ31729@ZenIV.linux.org.uk> References: <20120711183239.GA7122@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 11, 2012 at 12:10:12PM -0700, Linus Torvalds wrote: > rdi = 54415541e5894855 > > which looks like some odd corrupted ASCII to me ("UH\211\345AUAT") but > that makes no sense either. It makes a lot of sense as amd64 code, though: 55 push %rbp 48 89 e5 mov %rsp,%rbp 41 55 push %r13 41 54 push %r12 IOW, it's the first 8 bytes from a fairly sane beginning of some function. So &(inode->i_fop->owner) (and thus inode->i_fop - owner is the first field) is some spot in .text. Would be interesting to find out what function was that from (i.e. what's the value of inode->i_fop); with any luck it might've still been in some register. Could you post objdump of do_dentry_open() from your kernel?