hi ALSA team,
Please comment on below issue wrt warning seen..
thanks
Laxminath Kasam
On 2018-01-10 15:00, b_lkasam@xxxxxxxxxxxxxx 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
<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] [<ffffffc00008aae4>]
dump_backtrace+0x0/0x15c
<6>[ 263.576904] [3: writer: 8681] [<ffffffc00008ac54>]
show_stack+0x14/0x1c
<6>[ 263.576966] [3: writer: 8681] [<ffffffc0011a1cb0>]
dump_stack+0x80/0xa4
<6>[ 263.577025] [3: writer: 8681] [<ffffffc0000a6bf0>]
warn_slowpath_common+0x88/0xac
<6>[ 263.577088] [3: writer: 8681] [<ffffffc0000a6d2c>]
warn_slowpath_null+0x18/0x20
<6>[ 263.577152] [3: writer: 8681] [<ffffffc000f0141c>]
snd_soc_runtime_activate+0x11c/0x130
<6>[ 263.577221] [3: writer: 8681] [<ffffffc000f05e74>]
soc_compr_open_fe+0x204/0x29c
<6>[ 263.577289] [3: writer: 8681] [<ffffffc000eddbac>]
snd_compr_open+0x170/0x1b4
<6>[ 263.577355] [3: writer: 8681] [<ffffffc000ebfc78>]
snd_open+0x13c/0x154
<6>[ 263.577415] [3: writer: 8681] [<ffffffc0001d72e8>]
chrdev_open+0x140/0x188
<6>[ 263.577476] [3: writer: 8681] [<ffffffc0001d0758>]
do_dentry_open+0x260/0x2d8
<6>[ 263.577545] [3: writer: 8681] [<ffffffc0001d1938>]
vfs_open+0x60/0x6c
<6>[ 263.577605] [3: writer: 8681] [<ffffffc0001e0ea8>]
do_last+0x804/0xb3c
<6>[ 263.577665] [3: writer: 8681] [<ffffffc0001e141c>]
path_openat+0x23c/0x5f4
<6>[ 263.577732] [3: writer: 8681] [<ffffffc0001e2108>]
do_filp_open+0x40/0xa8
<6>[ 263.577796] [3: writer: 8681] [<ffffffc0001d1cf4>]
do_sys_open+0x174/0x224
<6>[ 263.577866] [3: writer: 8681] [<ffffffc0002212f4>]
compat_SyS_openat+0xc/0x14
With Regards,
Laxminath Kasam
_______________________________________________
Alsa-devel mailing list
Alsa-devel@xxxxxxxxxxxxxxxx
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
