Kai Vehmanen ce1558c285 ALSA: hda/hdmi: fix incorrect locking in hdmi_pcm_close ... A race exists between closing a PCM and update of ELD data. In hdmi_pcm_close(), hinfo->nid value is modified without taking spec->pcm_lock. If this happens concurrently while processing an ELD update in hdmi_pcm_setup_pin(), converter assignment may be done incorrectly. This bug was found by hitting a WARN_ON in snd_hda_spdif_ctls_assign() in a HDMI receiver connection stress test: [2739.684569] WARNING: CPU: 5 PID: 2090 at sound/pci/hda/patch_hdmi.c:1898 check_non_pcm_per_cvt+0x41/0x50 [snd_hda_codec_hdmi] ... [2739.684707] Call Trace: [2739.684720] update_eld+0x121/0x5a0 [snd_hda_codec_hdmi] [2739.684736] hdmi_present_sense+0x21e/0x3b0 [snd_hda_codec_hdmi] [2739.684750] check_presence_and_report+0x81/0xd0 [snd_hda_codec_hdmi] [2739.684842] intel_audio_codec_enable+0x122/0x190 [i915] Fixes: 42b2987079 ("ALSA: hda - hdmi playback without monitor in dynamic pcm bind mode") Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20201013152628.920764-1-kai.vehmanen@linux.intel.com Signed-off-by: Takashi Iwai <tiwai@suse.de>		2020-10-13 18:34:35 +02:00
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ac97
aoa
arm
atmel
core	ALSA: seq: oss: Avoid mutex lock for a long-time ioctl	2020-09-23 14:45:14 +02:00
drivers	ALSA: portman2x4: fix repeated word 'if'	2020-10-06 18:08:19 +02:00
firewire	ALSA: fireworks: use semicolons rather than commas to separate statements	2020-10-12 08:51:51 +02:00
hda	ASoC: Updates for v5.10	2020-10-12 16:08:57 +02:00
i2c
isa
mips
oss
parisc
pci	ALSA: hda/hdmi: fix incorrect locking in hdmi_pcm_close	2020-10-13 18:34:35 +02:00
pcmcia
ppc
sh
soc	ASoC: Updates for v5.10	2020-10-12 16:08:57 +02:00
sparc
spi
synth
usb	Merge branch 'for-next' into for-linus	2020-10-12 08:51:00 +02:00
x86
xen
ac97_bus.c
Kconfig
last.c
Makefile
sound_core.c