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Takashi Iwai 8e6b1a72a7 ALSA: aloop: Fix access to not-yet-ready substream via cable 
In loopback_open() and loopback_close(), we assign and release the
substream object to the corresponding cable in a racy way.  It's
neither locked nor done in the right position.  The open callback
assigns the substream before its preparation finishes, hence the other
side of the cable may pick it up, which may lead to the invalid memory
access.

This patch addresses these: move the assignment to the end of the open
callback, and wrap with cable->lock for avoiding concurrent accesses.

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
 		2018-03-22 10:40:27 +01:00
..
ac97 ALSA: ac97: kconfig: Remove select of undefined symbol AC97 2018-02-12 08:16:39 +01:00
aoa License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
arm Merge remote-tracking branches 'asoc/topic/ac97', 'asoc/topic/ac97-mfd', 'asoc/topic/amd' and 'asoc/topic/arizona-mfd' into asoc-next 2017-11-10 21:31:02 +00:00
atmel ASoC: Updates for v4.14 2017-09-04 14:50:49 +02:00
core ALSA: pcm: Fix UAF in snd_pcm_oss_get_formats() 2018-03-11 10:25:10 +01:00
drivers ALSA: aloop: Fix access to not-yet-ready substream via cable 2018-03-22 10:40:27 +01:00
firewire vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
hda Merge branch 'topic/hdac-hdmi' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-intel 2018-01-12 21:19:05 +00:00
i2c ASoC: Updates for v4.15 2017-11-13 15:45:57 +01:00
isa ALSA: gus: Delete an error message for a failed memory allocation in snd_gf1_dma_transfer_block() 2017-11-29 09:29:36 +01:00
mips ALSA: sgio2audio: Improve a size determination in snd_sgio2audio_create() 2017-11-29 09:29:31 +01:00
oss vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
parisc License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pci ALSA: hda/realtek - Fix speaker no sound after system resume 2018-03-22 09:43:28 +01:00
pcmcia ALSA: pcmcia: constify snd_pcm_ops structures 2017-08-19 11:02:21 +02:00
ppc License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sh ALSA: sh: aica: Convert timers to use timer_setup() 2017-10-05 08:20:17 +02:00
soc Merge remote-tracking branches 'asoc/fix/amd', 'asoc/fix/hdmi-codec', 'asoc/fix/rt5651', 'asoc/fix/samsung', 'asoc/fix/sgtl5000', 'asoc/fix/sunxi' and 'asoc/fix/wm-adsp' into asoc-linus 2018-03-12 09:14:07 -07:00
sparc License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
spi License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
synth ASoC: Updates for v4.15 2017-11-13 15:45:57 +01:00
usb ALSA: usb-audio: Add a quirck for B&W PX headphones 2018-02-24 11:28:05 +01:00
x86 ALSA: x86: Fix potential crash at error path 2018-02-28 08:46:00 +01:00
Kconfig ASoC: Updates for v4.15 2017-11-13 15:45:57 +01:00
Makefile ASoC: Updates for v4.15 2017-11-13 15:45:57 +01:00
ac97_bus.c
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last.c
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sound_core.c sound: Remove leftover msnd init declarations 2018-01-11 17:10:34 +01:00