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Date: Sat, 05 Sep 2009 10:44:32 +0200 From: Takashi Iwai <tiwai@...e.de> To: Tarkan Erimer <tarkan.erimer@...knet.net.tr> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [BUG] Sound related problem with Linux-2.6.31-rc8-git1-rt9 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@...kane:~$ 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: [<ffffffffa010f4b5>] 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:[<ffffffffa010f4b5>] [<ffffffffa010f4b5>] > 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] [<ffffffffa014c092>] ? azx_irq_pending_work+0x0/0xbc > [snd_hda_intel] > [81001.954914] [<ffffffffa014c11c>] ? azx_irq_pending_work+0x8a/0xbc > [snd_hda_intel] > [81001.954923] [<ffffffff81051f35>] ? worker_thread+0x1cb/0x268 > [81001.954928] [<ffffffff81056355>] ? autoremove_wake_function+0x0/0x2e > [81001.954933] [<ffffffff81051d6a>] ? worker_thread+0x0/0x268 > [81001.954938] [<ffffffff81055f9c>] ? kthread+0x8b/0x93 > [81001.954944] [<ffffffff81011c5a>] ? child_rip+0xa/0x20 > [81001.954949] [<ffffffff81055f11>] ? kthread+0x0/0x93 > [81001.954953] [<ffffffff81011c50>] ? 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 [<ffffffffa010f4b5>] snd_pcm_period_elapsed+0x11/0x1ec > [snd_pcm] > [81001.955026] RSP <ffff88003a0cddd0> > [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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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