From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752374AbXCANWt (ORCPT ); Thu, 1 Mar 2007 08:22:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752388AbXCANWt (ORCPT ); Thu, 1 Mar 2007 08:22:49 -0500 Received: from web52905.mail.yahoo.com ([206.190.49.15]:31985 "HELO web52905.mail.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752277AbXCANWs (ORCPT ); Thu, 1 Mar 2007 08:22:48 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID; b=sWS8emGUl+GRMnk2JrGQVcZ3BPIKPorpwvOsdrPi4eT1JaUPARAFDr7Hyj7X1Abv54NNQGJiQX+LmmCiXm0Bsa1UvIJmRuoNu6JzgKM78AmPCBNtOoXG7xDUr3ewKpYofjILXZzpaZm58P8ZyQA2cn5GmTxgoCzsaFJ4rmwyEco=; X-YMail-OSG: YvhCGYkVM1nEJlxaB_EG1HyWtVRNvU6KvHL6Nat1zj2twPnq_nnZikrTiJZWcznNqgcWsIbzeHLGQgYcaPZ31_rZ5Dp.jxW2QBWMGgisLrd7ek1edVpYKz8kBafk5aYa9vs2eXrTa8E- Date: Thu, 1 Mar 2007 13:22:46 +0000 (GMT) From: Chris Rankin Subject: Re: [Alsa-devel] [BUG] Linux 2.6.20.1 - unable to handle kernel paging request - accessing freed memory? To: Pekka J Enberg Cc: Takashi Iwai , Randy Dunlap , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Message-ID: <5749.60103.qm@web52905.mail.yahoo.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --- Pekka J Enberg wrote: > Please apply this patch to your kernel and try to reproduce: Ta-DA!!!!!!!!!!!!!!!!!!!! BUG: unable to handle kernel paging request at virtual address 6b6b6d6b printing eip: c0130113 *pde = 00000000 Oops: 0002 [#1] PREEMPT SMP last sysfs file: /class/net/eth2/statistics/collisions Modules linked in: snd_rtctimer radeon drm pwc eeprom cpufreq_ondemand p4_clockmod speedstep_lib nfsd exportfs ipv6 autofs4 nfs lockd sunrpc af_packet firmware_class binfmt_misc video thermal processor fan button video1394 raw1394 ac lp parport_pc parport nvram eth1394 compat_ioctl32 videodev v4l2_common v4l1_compat snd_usb_audio snd_usb_lib sd_mod sg snd_emu10k1_synth snd_emux_synth snd_seq_virmidi snd_seq_midi_emul snd_emu10k1 snd_rawmidi snd_ac97_codec ohci1394 ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event ieee1394 snd_seq snd_pcm_oss sata_sil ehci_hcd uhci_hcd snd_mixer_oss libata e7xxx_edac edac_mc snd_pcm e1000 i2c_i801 i2c_core ide_cd intel_agp agpgart serio_raw psmouse scsi_mod snd_seq_device snd_timer snd_page_alloc snd_util_mem snd_hwdep snd soundcore cdrom pcspkr usbcore ext3 jbd CPU: 1 EIP: 0060:[] Not tainted VLI EFLAGS: 00010202 (2.6.20.1 #3) EIP is at module_put+0x20/0x52 eax: 6b6b6d6b ebx: 6b6b6b6b ecx: 00000001 edx: e0049000 esi: f60f7b08 edi: 6b6b6b6b ebp: ebc14e0c esp: e0049f58 ds: 007b es: 007b ss: 0068 Process udevd (pid: 7608, ti=e0049000 task=f7e6b030 task.ti=e0049000) Stack: f7898edc c0183a5b 00000010 ed5bbb7c eccd0978 c0151253 00000000 00000000 f7ff2208 ed5bbb7c f75b5360 00000000 ed5bbb7c c014ed90 00000003 00000003 f75b5360 f75b53e0 c014fd89 00000003 00000007 00000003 e0049000 c0102bce Call Trace: [] sysfs_release+0x2d/0x4c [] __fput+0x96/0x13c [] filp_close+0x51/0x58 [] sys_close+0x70/0xa7 [] sysenter_past_esp+0x5f/0x85 [] __sched_text_start+0x6b3/0x965 ======================= Code: 00 89 f0 83 c4 0c 5b 5e 5f 5d c3 53 89 c3 85 c0 74 49 b8 01 00 00 00 e8 5f 49 fe ff e8 3b 5b 07 00 c1 e0 07 8d 84 18 80 01 00 00 08 83 3b 02 75 0b 8b 83 88 05 00 00 e8 a9 45 fe ff b8 01 00 EIP: [] module_put+0x20/0x52 SS:ESP 0068:e0049f58 <6>note: udevd[7608] exited with preempt_count 1 BUG: scheduling while atomic: udevd/0x10000001/7608 [] __sched_text_start+0x56/0x965 [] irq_exit+0x37/0x42 [] smp_apic_timer_interrupt+0x70/0x79 [] apic_timer_interrupt+0x28/0x30 [] __cond_resched+0x12/0x2c [] cond_resched+0x26/0x31 [] unmap_vmas+0x3d3/0x4df [] exit_mmap+0x7e/0x10a [] mmput+0x1d/0x78 [] do_exit+0x1b2/0x6d8 [] sys_vm86+0x99/0x21d [] die+0x1f7/0x21c [] do_page_fault+0x442/0x510 [] do_page_fault+0x0/0x510 [] error_code+0x7c/0x84 [] module_put+0x20/0x52 [] sysfs_release+0x2d/0x4c [] __fput+0x96/0x13c [] filp_close+0x51/0x58 [] sys_close+0x70/0xa7 [] sysenter_past_esp+0x5f/0x85 [] __sched_text_start+0x6b3/0x965 ======================= I would never have guessed THAT one :-) !! Cheers, Chris ___________________________________________________________ The all-new Yahoo! Mail goes wherever you go - free your email address from your Internet provider. http://uk.docs.yahoo.com/nowyoucan.html