Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751515AbZIGHMN (ORCPT ); Mon, 7 Sep 2009 03:12:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751339AbZIGHMM (ORCPT ); Mon, 7 Sep 2009 03:12:12 -0400 Received: from cantor2.suse.de ([195.135.220.15]:34257 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751030AbZIGHML (ORCPT ); Mon, 7 Sep 2009 03:12:11 -0400 Date: Mon, 07 Sep 2009 09:12:13 +0200 Message-ID: From: Takashi Iwai To: Tarkan Erimer Cc: Linux Kernel Mailing List Subject: Re: [BUG] Sound related problem with Linux-2.6.31-rc8-git1-rt9 In-Reply-To: <200909071001.15718.tarkan.erimer@turknet.net.tr> References: <200909041445.29212.tarkan.erimer@turknet.net.tr> <200909071001.15718.tarkan.erimer@turknet.net.tr> User-Agent: Wanderlust/2.15.6 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.7 Emacs/23.1 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5660 Lines: 128 At Mon, 7 Sep 2009 10:01:15 +0300, Tarkan Erimer wrote: > > On Saturday 05 September 2009 11:44:32 am Takashi Iwai wrote: > > At Fri, 4 Sep 2009 14:45:28 +0300, > > > > Tarkan Erimer wrote: > > > When I ran a movie, I got these errors in dmesg. Also, sound began to > > > skip too fastly. My audio device is: > > > > > > tarkane@tarkane:~$ lspci | grep -i audio > > > 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High > > > Definition Audio Controller (rev 01) > > > > > > > > > Tarkan Erimer > > > > > > > > > [81001.954666] BUG: unable to handle kernel NULL pointer dereference at > > > 00000000000000a8 > > > [81001.954677] IP: [] snd_pcm_period_elapsed+0x11/0x1ec > > > [snd_pcm] > > > [81001.954701] PGD 1a028067 PUD 1a022067 PMD 0 > > > [81001.954708] Oops: 0000 [#1] PREEMPT SMP > > > [81001.954713] last sysfs file: > > > /sys/devices/pci0000:00/0000:00:1d.7/usb5/5-8/5-8:1.0/host5/target5:0:0/5 > > >:0:0:0/block/sdb/size [81001.954718] CPU 1 > > > [81001.954721] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat > > > usb_storage nfs lockd fscache nfs_acl auth_rpcgss sunrpc xt_multiport > > > iptable_filter ip_tables x_tables binfmt_misc bridge stp llc bnep > > > xfrm_user xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 deflate ctr > > > twofish twofish_common camellia serpent blowfish cast5 des_generic cbc > > > aes_x86_64 aes_generic xcbc rmd160 sha256_generic sha1_generic > > > crypto_null af_key xfs exportfs btrfs zlib_deflate crc32c libcrc32c > > > snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_pcm_oss > > > snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi > > > snd_seq_midi_event snd_seq snd_timer iTCO_wdt snd_seq_device > > > iTCO_vendor_support snd soundcore snd_page_alloc psmouse serio_raw pcspkr > > > usbhid ehci_hcd uhci_hcd tg3 floppy > > > [81001.954806] Pid: 2180, comm: hd-audio0 Not tainted 2.6.31-rc8-git1 #4 > > > HP Compaq dc7600 Small Form Factor > > > [81001.954810] RIP: 0010:[] [] > > > snd_pcm_period_elapsed+0x11/0x1ec [snd_pcm] > > > [81001.954827] RSP: 0018:ffff88003a0cddd0 EFLAGS: 00010282 > > > [81001.954831] RAX: 0000000000000000 RBX: ffff88003a1cf9e0 RCX: > > > 0000000000000000 > > > [81001.954834] RDX: 0000000000000001 RSI: 0000000000000003 RDI: > > > 0000000000000000 > > > [81001.954837] RBP: 0000000000000004 R08: ffff88003a1cf9e0 R09: > > > 00000000ffffffff > > > [81001.954841] R10: 0000000000000013 R11: ffffffff81033a48 R12: > > > ffff88003a49cc48 > > > [81001.954844] R13: 0000000000000000 R14: ffff88003a49cc00 R15: > > > ffffffffa014c092 > > > [81001.954849] FS: 0000000000000000(0000) GS:ffff8800017f8000(0000) > > > knlGS:0000000000000000 > > > [81001.954853] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b > > > [81001.954856] CR2: 00000000000000a8 CR3: 000000001a01b000 CR4: > > > 00000000000006a0 > > > [81001.954860] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > > > 0000000000000000 > > > [81001.954863] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > > > 0000000000000400 > > > [81001.954868] Process hd-audio0 (pid: 2180, threadinfo ffff88003a0cc000, > > > task ffff88003f197750) > > > [81001.954870] Stack: > > > [81001.954872] 0000000000000000 ffff88003a1cf9e0 0000000000000004 > > > ffff88003a49cc48 > > > [81001.954878] <0> 0000000000000000 ffff88003a49cc00 ffffffffa014c092 > > > ffffffffa014c11c > > > [81001.954884] <0> ffff88003a0cdec8 ffffc9000260c100 ffff88003a49cdf0 > > > ffff88003a49cdf8 > > > [81001.954892] Call Trace: > > > [81001.954905] [] ? azx_irq_pending_work+0x0/0xbc > > > [snd_hda_intel] > > > [81001.954914] [] ? azx_irq_pending_work+0x8a/0xbc > > > [snd_hda_intel] > > > [81001.954923] [] ? worker_thread+0x1cb/0x268 > > > [81001.954928] [] ? autoremove_wake_function+0x0/0x2e > > > [81001.954933] [] ? worker_thread+0x0/0x268 > > > [81001.954938] [] ? kthread+0x8b/0x93 > > > [81001.954944] [] ? child_rip+0xa/0x20 > > > [81001.954949] [] ? kthread+0x0/0x93 > > > [81001.954953] [] ? child_rip+0x0/0x20 > > > [81001.954955] Code: 01 00 00 31 c9 ba 01 00 00 00 be 06 00 00 00 e8 5d > > > 7c f2 e0 31 c9 89 c8 5f c3 41 57 41 56 41 55 41 54 55 53 48 83 ec 08 49 > > > 89 fd <4c> 8b bf a8 00 00 00 49 8b 87 b0 02 00 00 48 85 c0 74 02 ff d0 > > > [81001.955011] RIP [] > > > snd_pcm_period_elapsed+0x11/0x1ec [snd_pcm] > > > [81001.955026] RSP > > > [81001.955029] CR2: 00000000000000a8 > > > [81001.955033] ---[ end trace 552f354de445b720 ]--- > > > > It's the first case of such a report. Might be some races. > > Did you set CONFIG_SND_DEBUG=y? > > > > > > thanks, > > > > Takashi > > > > Thanks for your respond. > > No, I didn't. But; today, I will try with CONFIG_SND_DEBUG=y and then will try > to reproduce the problem. Thanks, that'll be helpful. Also, there should be some relevant messages from the driver before entering this point. Could you check it? Another questions: - how often does it happen, how reproducible is it? - is whether it's a regression in 2.6.31 -- have you ever gotten this in the earlier version? There are a few changes in the codec communication code since 2.6.30, but I don't see any obvious problem in them... thanks, Takashi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/