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linux-stable/sound/core
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Takashi Iwai 4a52a21272 ALSA: seq: oss: Fix unbalanced use lock for synth MIDI device 
commit f5e94b4c6e upstream.

When get_synthdev() is called for a MIDI device, it returns the fixed
midi_synth_dev without the use refcounting.  OTOH, the caller is
supposed to unreference unconditionally after the usage, so this would
lead to unbalanced refcount.

This patch corrects the behavior and keep up the refcount balance also
for the MIDI synth device.

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-01 12:58:16 -07:00
..
oss ALSA: pcm: Fix endless loop for XRUN recovery in OSS emulation 2018-04-24 09:36:35 +02:00
seq ALSA: seq: oss: Fix unbalanced use lock for synth MIDI device 2018-05-01 12:58:16 -07:00
compress_offload.c ALSA: compress: Remove unused variable 2017-09-18 15:45:01 +02:00
control.c ALSA: control: Fix memory corruption risk in snd_ctl_elem_read 2018-03-08 22:41:02 -08:00
control_compat.c ALSA: Get rid of card power_lock 2017-08-30 20:44:29 +02:00
ctljack.c ALSA: declare snd_kcontrol_new structures as const 2017-05-30 10:29:25 +02:00
device.c ALSA: core: Use %pS printk format for direct addresses 2017-09-07 10:36:02 +02:00
hrtimer.c ALSA: timer: Limit max instances per timer 2017-11-06 10:41:24 +01:00
hwdep.c sched/wait: Rename wait_queue_t => wait_queue_entry_t 2017-06-20 12:18:27 +02:00
hwdep_compat.c
info.c ALSA: core: Follow standard EXPORT_SYMBOL() declarations 2017-06-16 16:19:16 +02:00
info_oss.c ALSA: core: Follow standard EXPORT_SYMBOL() declarations 2017-06-16 16:19:16 +02:00
init.c ALSA: Get rid of card power_lock 2017-08-30 20:44:29 +02:00
isadma.c ALSA: core: Follow standard EXPORT_SYMBOL() declarations 2017-06-16 16:19:16 +02:00
jack.c ALSA: jack: Allow building the jack layer without input device 2016-02-23 09:03:07 +01:00
Kconfig ALSA: seq: Allow the modular sequencer registration 2017-06-12 08:43:33 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
memalloc.c ALSA: core: Follow standard EXPORT_SYMBOL() declarations 2017-06-16 16:19:16 +02:00
memory.c ALSA: core: Follow standard EXPORT_SYMBOL() declarations 2017-06-16 16:19:16 +02:00
misc.c ALSA: core: Follow standard EXPORT_SYMBOL() declarations 2017-06-16 16:19:16 +02:00
pcm.c ALSA: pcm: Fix UAF at PCM release via PCM timer access 2018-04-24 09:36:31 +02:00
pcm_compat.c ALSA: pcm: Return negative delays from SNDRV_PCM_IOCTL_DELAY. 2018-05-01 12:58:16 -07:00
pcm_dmaengine.c ASoC: dmaengine_pcm: Add support for packed transfers 2016-04-27 17:34:11 +01:00
pcm_drm_eld.c ALSA: pcm: use helper function to refer parameter as read-only 2017-05-17 07:24:39 +02:00
pcm_iec958.c ALSA: pcm: Allow 32 bit sample format in IEC958 channel status helper 2016-04-06 14:33:38 -07:00
pcm_lib.c ALSA: pcm: Remove yet superfluous WARN_ON() 2018-01-23 19:58:11 +01:00
pcm_local.h ALSA: pcm: unify codes to operate application-side position on PCM buffer 2017-06-12 08:49:22 +02:00
pcm_memory.c ALSA: pcm: Follow standard EXPORT_SYMBOL() declarations 2017-06-16 16:18:58 +02:00
pcm_misc.c ALSA: pcm: Follow standard EXPORT_SYMBOL() declarations 2017-06-16 16:18:58 +02:00
pcm_native.c ALSA: core: Report audio_tstamp in snd_pcm_sync_ptr 2018-05-01 12:58:16 -07:00
pcm_param_trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pcm_timer.c ALSA: pcm: include pcm_local.h and remove some extraneous tabs 2017-05-30 18:04:47 +02:00
pcm_trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rawmidi.c ALSA: rawmidi: Avoid racy info ioctl via ctl device 2017-12-29 17:53:46 +01:00
rawmidi_compat.c ALSA: rawmidi: Fix missing input substream checks in compat ioctls 2018-04-24 09:36:36 +02:00
seq_device.c ALSA: seq: Cancel pending autoload work at unbinding device 2017-09-12 12:41:20 +02:00
sgbuf.c ALSA: core: Deletion of unnecessary checks before two function calls 2014-11-21 20:06:57 +01:00
sound.c ALSA: core: Follow standard EXPORT_SYMBOL() declarations 2017-06-16 16:19:16 +02:00
sound_oss.c ALSA: core: Follow standard EXPORT_SYMBOL() declarations 2017-06-16 16:19:16 +02:00
timer.c ALSA: timer: Limit max instances per timer 2017-11-06 10:41:24 +01:00
timer_compat.c ALSA: timer: Remove kernel warning at compat ioctl error paths 2017-11-30 08:40:48 +00:00
vmaster.c ALSA: hda - Fix yet remaining issue with vmaster 0dB initialization 2017-11-30 08:40:49 +00:00