From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262905AbUF3Vdh (ORCPT ); Wed, 30 Jun 2004 17:33:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262906AbUF3Vdh (ORCPT ); Wed, 30 Jun 2004 17:33:37 -0400 Received: from fw.osdl.org ([65.172.181.6]:59522 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S262905AbUF3Vdf (ORCPT ); Wed, 30 Jun 2004 17:33:35 -0400 Date: Wed, 30 Jun 2004 14:29:48 -0700 From: "Randy.Dunlap" To: "Michael Tasche" Cc: linux-kernel@vger.kernel.org Subject: Re: Crash when loading a module (without executing any code of the module!) Message-Id: <20040630142948.08da5d90.rddunlap@osdl.org> In-Reply-To: <255262226@web.de> References: <255262226@web.de> Organization: OSDL X-Mailer: Sylpheed version 0.9.10 (GTK+ 1.2.10; i686-pc-linux-gnu) X-Face: +5V?h'hZQPB9kW Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi- On Wed, 30 Jun 2004 15:41:27 +0200 Michael Tasche wrote: | Hi, | currently I'm developping a small kernel module for a hardware (which was developped by a friend of mine), which is | supposed to load a firmware onto a PCI-card. | | The development is done together with the friend, who's developping the firmware. | We tried the following: | He compiled a kernel-independent object (containing the firmware) on his system using kbuild | (Dual-AthlonMP, SuSE 8.2 with kernel.org-kernel 2.6.3, module-init-tools 0.9.14-pre2, gcc 3.3.1, | ld 2.14.90.0.5 20030722). | Afterwards I tried to link it to my kernel-module (using the same kbuild makefile with | firmware.o_shipped) on my machine (Fedora2, 2.6.5-3.1smp, module-init-tools 3.0-pre10, gcc 3.3.3, ld 2.15.90.0.3 | 20040415). | | This is what happened: | | Unable to handle kernel paging request at virtual address 82d90700 | printing eip: | 02135657 | *pde = 00000000 | Oops: 0002 [#1] | PREEMPT SMP | CPU: 1 | EIP: 0060:[<02135657>] Not tainted | EFLAGS: 00010246 (2.6.5-3.1smp) | EIP is at module_unload_init+0xa/0x4d | eax: 82d90700 ebx: 82c2387c ecx: 82d8f600 edx: 00000000 | esi: 82c38f33 edi: 82c40027 ebp: 000005f0 esp: 763c3f38 | ds: 007b es: 007b ss: 0068 | Process insmod (pid: 1812, threadinfo=763c2000 task=7f3c60b0) | Stack: 02136dc0 7864cc40 8282a000 00000000 82d8f600 00000000 00000000 00000000 | 00000000 00000000 0000000b 00000000 00000010 00000000 00000000 00000009 | 00000025 00000024 00000026 82c3829c 82c23727 82a94000 0856a008 763c3fc4 | Call Trace: | [<02136dc0>] load_module+0x53e/0x7fa | [<021370da>] sys_init_module+0x5e/0x293 | | Code: 89 81 00 11 00 00 89 81 04 11 00 00 89 c8 c7 80 00 01 00 00 Some of those stack addresses look odd to me. Please send me your kernel .config file. | What puzzles me, is that I don't see any of my code in the calltrace. I had a look into the | kernel-code and it seems to crash, before it even jumps into my code. What am I missing? | By the way, everything works fine, if I compile the entire module on my machine. | Some more testing showed, that we do also expierence a crash, if we do everything vice-versa. | | Regards, | Michael | | P.S: This was also posted by the driver developer to comp.os.linux.development.system. Can you post the module source code, or a subset of it that causes the problem? -- ~Randy