linux-stable/sound
Pierre-Louis Bossart 6718f79c40 ALSA: hda: hdac_stream: fix potential locking issue in snd_hdac_stream_assign()
commit 1465d06a6d upstream.

The fields 'opened', 'running', 'assigned_key' are all protected by a
spinlock, but the spinlock is not taken when looking for a
stream. This can result in a possible race between assign() and
release().

Fix by taking the spinlock before walking through the bus stream list.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210924192417.169243-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Cc: Scott Bruce <smbruce@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26 10:39:22 +01:00
..
ac97 ALSA: ac97: fix PM reference leak in ac97_bus_remove() 2021-07-20 16:05:40 +02:00
aoa ALSA: aoa: i2sbus: use DECLARE_COMPLETION_ONSTACK() macro 2020-09-03 09:26:52 +02:00
arm
atmel ALSA: atmel: ac97: clarify operator precedence 2020-09-03 09:27:34 +02:00
core ALSA: ISA: not for M68K 2021-11-26 10:39:10 +01:00
drivers ALSA: aloop: Fix initialization of controls 2021-04-14 08:41:56 +02:00
firewire ALSA: firewire-motu: fix detection for S/PDIF source on optical interface in v2 protocol 2021-07-20 16:05:45 +02:00
hda ALSA: hda: hdac_stream: fix potential locking issue in snd_hdac_stream_assign() 2021-11-26 10:39:22 +01:00
i2c
isa ALSA: gus: fix null pointer dereference on pointer block 2021-11-26 10:39:11 +01:00
mips hal2: convert to dma_alloc_noncoherent 2020-09-25 06:20:44 +02:00
oss
parisc
pci ALSA: ISA: not for M68K 2021-11-26 10:39:10 +01:00
pcmcia
ppc ALSA: ppc: fix error return code in snd_pmac_probe() 2021-07-20 16:05:43 +02:00
sh
soc ASoC: DAPM: Cover regression by kctl change notification fix 2021-11-26 10:39:21 +01:00
sparc ALSA: sparc: dbri: fix repeated word 'the' 2020-10-17 09:58:35 +02:00
spi
synth ALSA: synth: missing check for possible NULL after the call to kstrdup 2021-11-18 14:03:40 +01:00
usb ALSA: usb-audio: Add registration quirk for JBL Quantum 400 2021-11-18 14:03:39 +01:00
x86 ALSA: hda: use consistent HDAudio spelling in comments/docs 2020-09-02 19:31:32 +02:00
xen
ac97_bus.c
Kconfig
last.c
Makefile
sound_core.c