From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754979Ab0ARIP1 (ORCPT ); Mon, 18 Jan 2010 03:15:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754578Ab0ARIP0 (ORCPT ); Mon, 18 Jan 2010 03:15:26 -0500 Received: from mail-ew0-f219.google.com ([209.85.219.219]:49349 "EHLO mail-ew0-f219.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754226Ab0ARIPZ convert rfc822-to-8bit (ORCPT ); Mon, 18 Jan 2010 03:15:25 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=tLYPipuCqXjW1KJcGa6vePCye3LtITOnwApdIt4ZjCfYREAkfBFNsqrodGp+1y0v6y ERBoAKpBLzlO+URPVBOPxptQ392oupksvEKaH2Jd1CYrR68yqB9V3WPQSSUJO0rMDNDO Nukv1+fyzwcRDHFQJW6bzj+WRaQq+EGlwsfGM= MIME-Version: 1.0 In-Reply-To: References: <520f0cf11001060853i5c296744rf94c947cb7798774@mail.gmail.com> Date: Mon, 18 Jan 2010 09:15:23 +0100 X-Google-Sender-Auth: a5d75804efe27c97 Message-ID: <520f0cf11001180015ub28da4fp4c8c38d3c02c78d5@mail.gmail.com> Subject: Re: WARNING: at sound/core/sound_oss.c:96 snd_oss_kernel_minor+0xdf/0x120 [snd]() From: John Kacur To: Takashi Iwai Cc: LKML , Jaroslav Kysela , alsa-devel@alsa-project.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 12, 2010 at 9:57 AM, Takashi Iwai wrote: > At Wed, 6 Jan 2010 17:53:24 +0100, > John Kacur wrote: >> >> The following was in my 2.6.33-rc3 dmesg (of course that doesn't mean >> that the problem didn't exist earlier too) >> >> WARNING: at /home/jkacur/rt.linux.git/sound/core/sound_oss.c:96 >> snd_oss_kernel_minor+0xdf/0x120 [snd]() >> Hardware name: 2241B48 >> BUG? (minor < 0 || minor >= 128) >> Modules linked in: snd_mixer_oss thinkpad_acpi(+) sdhci hwmon i2c_i801 >> firewire_ohci snd_pcm mmc_core snd_timer cfg80211 firewire_core btusb >> joydev iTCO_wdt bluetooth ata_generic e1000e i2c_core ppdev snd >> battery ac iTCO_vendor_support parport_pc ricoh_mmc intel_agp >> pata_acpi pcspkr parport tpm_tis video wmi output soundcore button tpm >> rfkill sr_mod tpm_bios snd_page_alloc crc_itu_t cdrom sg ahci libata >> sd_mod scsi_mod crc_t10dif xfs exportfs uhci_hcd ohci_hcd ehci_hcd >> [last unloaded: scsi_wait_scan] >> Pid: 1317, comm: modprobe Not tainted 2.6.33-rc3 #1 >> Call Trace: >>  [] ? snd_oss_kernel_minor+0xdf/0x120 [snd] >>  [] warn_slowpath_common+0x7c/0xa9 >>  [] warn_slowpath_fmt+0x41/0x43 >>  [] snd_oss_kernel_minor+0xdf/0x120 [snd] >>  [] snd_register_oss_device+0x2c/0x21a [snd] >>  [] snd_mixer_oss_notify_handler+0xa5/0x2e5 [snd_mixer_oss] >>  [] ? __mutex_unlock_slowpath+0x5c/0x141 >>  [] ? trace_hardirqs_on_caller+0x11f/0x14a >>  [] ? trace_hardirqs_on+0xd/0xf >> sdhci-pci 0000:15:00.2: SDHCI controller found [1180:0822] (rev 21) >> sdhci-pci 0000:15:00.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18 >>  [] ? __mutex_unlock_slowpath+0x12f/0x141 >> sdhci-pci 0000:15:00.2: Will use DMA mode even though HW doesn't fully >> claim to support it. >> Registered led device: mmc0:: >> mmc0: SDHCI controller on PCI [0000:15:00.2] using DMA >>  [] snd_card_register+0x135/0x14b [snd] >>  [] volume_init+0x335/0x3d2 [thinkpad_acpi] >>  [] thinkpad_acpi_module_init+0x61f/0xa4f [thinkpad_acpi] >>  [] ? thinkpad_acpi_module_init+0x0/0xa4f [thinkpad_acpi] >>  [] do_one_initcall+0x5f/0x154 >>  [] sys_init_module+0xd7/0x234 >>  [] system_call_fastpath+0x16/0x1b >> ---[ end trace a6d53dc318f09cb5 ]--- > > Looks like the code path from thinkpad-acpi... > > Could you add some printk's in sound/core/sound_oss.c:snd_oss_kernel_minor() > to inspect which values are taken and calculated? > I'm getting a card->number equal to 29, and a dev equal to 0. The case is SNDRV_OSS_DEVICE_TYPE_MIXER: So that does minor = SNDRV_MINOR_OSS(card->number, (dev ? SNDRV_MINOR_OSS_MIXER1 : SNDRV_MINOR_OSS_MIXER)); and according to the formula #define SNDRV_MINOR_OSS(card, dev) (((card) << 4) | (dev)) That works out to 464 which of course is not in the acceptable range between 0 and 128. John