From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean Delvare Subject: Re: input0: bad kobj_uevent_env content in show_uevent() Date: Tue, 4 Sep 2012 13:46:04 +0200 Message-ID: <20120904134604.7d95ab2b@endymion.delvare> References: <20120902075946.GA21198@localhost> <20120902083402.GA21787@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from zoneX.GCU-Squad.org ([194.213.125.0]:20888 "EHLO services.gcu-squad.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756817Ab2IDLqR (ORCPT ); Tue, 4 Sep 2012 07:46:17 -0400 In-Reply-To: <20120902083402.GA21787@localhost> Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Fengguang Wu Cc: linux-input@vger.kernel.org, Greg Kroah-Hartman , bjorn@mork.no, chunkeey@googlemail.com, linville@tuxdriver.com, LKML , Kay Sievers On Sun, 2 Sep 2012 16:34:02 +0800, Fengguang Wu wrote: > It's more than the input device that can trigger the panic. > Here is another trace which panics on accessing dmi/id/uevent: > > [ 32.380795] sysfs_read_file: /sys/devices/virtual/dmi/id/uevent > [ 32.399379] dmi id: uevent 73 env[1677721600]: id/.../id > [ 32.400780] uevent 0 env[0]: (null) > [ 32.401695] uevent 7 env[1]: (null) > ... > [ 32.478415] general protection fault: 0000 [#1] PREEMPT > [ 32.479953] CPU 0 > [ 32.480433] Pid: 114, comm: trinity-child0 Not tainted 3.6.0-rc4-bisect2-00001-gb6d86d3-dirty #26 Bochs Bochs > [ 32.482995] RIP: 0010:[] [] strnlen+0x23/0x70 > ... > [ 32.486234] Call Trace: > [ 32.486234] [] string.isra.4+0x4c/0x120 > [ 32.486234] [] vsnprintf+0x2c9/0x900 > [ 32.486234] [] vscnprintf+0x19/0x50 > [ 32.486234] [] vprintk_emit+0xe7/0x750 > [ 32.486234] [] printk+0x4f/0x58 > [ 32.486234] [] show_uevent+0x1cb/0x220 > [ 32.486234] [] dev_attr_show+0x2b/0x90 > [ 32.486234] [] ? sysfs_read_file+0x18a/0x320 > [ 32.486234] [] ? __get_free_pages+0x24/0xc0 > [ 32.486234] [] sysfs_read_file+0x1cd/0x320 I can't reproduce this, sorry, so I can't look into it. If it takes special steps to reproduce, please tell me, as I wasn't part of the original discussion. -- Jean Delvare