From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ladislav Michl Subject: Re: ASoC Compress FE open causing warning Date: Wed, 17 Jan 2018 10:59:48 +0100 Message-ID: <20180117095948.GA2564@lenoch> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from cvs.linux-mips.org (eddie.linux-mips.org [148.251.95.138]) by alsa0.perex.cz (Postfix) with ESMTP id 6C71B2677A6 for ; Wed, 17 Jan 2018 10:59:51 +0100 (CET) Received: (from localhost user: 'ladis' uid#1021 fake: STDIN (ladis@eddie.linux-mips.org)) by eddie.linux-mips.org id S23992391AbeAQJ7tpEQpI (ORCPT ); Wed, 17 Jan 2018 10:59:49 +0100 Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: b_lkasam@codeaurora.org Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Dear Laxminath Kasam, On Wed, Jan 17, 2018 at 03:08:31PM +0530, b_lkasam@codeaurora.org wrote: > hi ALSA team, > Please comment on below issue wrt warning seen.. Please do not top post. > thanks > Laxminath Kasam > On 2018-01-10 15:00, b_lkasam@codeaurora.org wrote: > > Hi ALSA team, > > This is wrt soc_compr_open_fe() call result in warning in API > > triggered from it snd_soc_runtime_activate(fe, stream).. > > Due to lock taken is &fe->card->mutex, but expected to take > > &fe->pcm_mutex. > > Below line results in warning since pcm_mutex lock is not taken.. > > > > void snd_soc_runtime_activate(struct snd_soc_pcm_runtime *rtd, int > > stream) > > { > > ... > > lockdep_assert_held(&rtd->pcm_mutex); > > > > } > > > > Warning seen as below -> > > <4>[ 263.555973] [3: writer: 8681] WARNING: CPU: 3 PID: 8681 at > > /home/min47.lee/ext-drive/j8plus-oos/android/kernel/sound/soc/soc-pcm.c:71 > > snd_soc_runtime_activate+0x11c/0x130() > > <6>[ 263.572125] [3: writer: 8681] Modules linked in: > > <6>[ 263.572176] [3: writer: 8681] CPU: 3 PID: 8681 Comm: writer > > Tainted: G W 3.18.71-g9888952 #3 As this release it at the end of life with 3.18.92 being released just today (and yours 3.18.71 comes from 13-Sep-2017) it is very unlikely anyone would bother to look at this... > > <6>[ 263.572253] [3: writer: 8681] Hardware name: Samsung J8-Plus LTE > > EUR OPEN Rev01 (DT) > > <0>[ 263.572317] [3: writer: 8681] Call trace: > > <6>[ 263.576842] [3: writer: 8681] [] > > dump_backtrace+0x0/0x15c > > <6>[ 263.576904] [3: writer: 8681] [] > > show_stack+0x14/0x1c > > <6>[ 263.576966] [3: writer: 8681] [] > > dump_stack+0x80/0xa4 > > <6>[ 263.577025] [3: writer: 8681] [] > > warn_slowpath_common+0x88/0xac > > <6>[ 263.577088] [3: writer: 8681] [] > > warn_slowpath_null+0x18/0x20 > > <6>[ 263.577152] [3: writer: 8681] [] > > snd_soc_runtime_activate+0x11c/0x130 > > <6>[ 263.577221] [3: writer: 8681] [] > > soc_compr_open_fe+0x204/0x29c > > <6>[ 263.577289] [3: writer: 8681] [] > > snd_compr_open+0x170/0x1b4 > > <6>[ 263.577355] [3: writer: 8681] [] > > snd_open+0x13c/0x154 > > <6>[ 263.577415] [3: writer: 8681] [] > > chrdev_open+0x140/0x188 > > <6>[ 263.577476] [3: writer: 8681] [] > > do_dentry_open+0x260/0x2d8 > > <6>[ 263.577545] [3: writer: 8681] [] > > vfs_open+0x60/0x6c > > <6>[ 263.577605] [3: writer: 8681] [] > > do_last+0x804/0xb3c > > <6>[ 263.577665] [3: writer: 8681] [] > > path_openat+0x23c/0x5f4 > > <6>[ 263.577732] [3: writer: 8681] [] > > do_filp_open+0x40/0xa8 > > <6>[ 263.577796] [3: writer: 8681] [] > > do_sys_open+0x174/0x224 > > <6>[ 263.577866] [3: writer: 8681] [] > > compat_SyS_openat+0xc/0x14 > > > > > > > > With Regards, > > Laxminath Kasam > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@alsa-project.org > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel