Cássio Gabriel 7bc02ab446 ALSA: pcm: Fix unlocked state reads in read/write file ops ...

The PCM read/write and readv/writev file operations reject streams in
OPEN or DISCONNECTED state before accessing the configured runtime
parameters. However, each operation reads runtime->state without the
PCM stream lock.

PCM state updates are serialized by the stream lock and may occur
concurrently from IRQ context. Use a local predicate based on
snd_pcm_get_state() to take a locked state snapshot for these VFS entry
checks.

This also consolidates the duplicated OPEN and DISCONNECTED tests. The
conditions and returned errors remain unchanged.

Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com>
Link: https://patch.msgid.link/20260610-alsa-pcm-read-write-state-helper-v1-1-93b7b992db09@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2026-06-10 16:28:48 +02:00

..

ac97

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

aoa

ALSA: aoa: check snd_ctl_new1() return value

2026-05-28 09:36:43 +02:00

arm

ASoC: pxa2xx-ac97: fix error handling for reset GPIO descriptor

2026-04-13 18:00:34 +01:00

atmel

ALSA: atmel: Use guard() for mutex locks

2025-09-01 13:54:28 +02:00

core

ALSA: pcm: Fix unlocked state reads in read/write file ops

2026-06-10 16:28:48 +02:00

drivers

ALSA: Improve style of pnp_device_id array terminators

2026-06-10 09:25:03 +02:00

firewire

ALSA: firewire-motu: Protect register DSP event queue positions

2026-05-25 09:19:44 +02:00

hda

ALSA: hda/realtek: Add quirk for HP 255 15.6 inch G9 Notebook PC

2026-06-10 09:25:56 +02:00

i2c

ALSA: i2c: ak4xxx-adda: seed AK5365 cache with reset defaults

2026-04-09 12:01:01 +02:00

isa

ALSA: Improve style of pnp_device_id array terminators

2026-06-10 09:25:03 +02:00

mips

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

oss

sound: oss: dmasound: kick queued output before extending tail fragment

2026-04-29 07:52:54 +02:00

parisc

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

pci

ALSA: oxygen: add HT-Omega eClaro (7284:9783) support

2026-06-02 08:24:06 +02:00

pcmcia

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

ppc

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

sh

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

soc

ALSA: hda/tas2781: Fix device-0 reset issue and handle -EXDEV in block data processing

2026-06-10 09:24:23 +02:00

sparc

ALSA: sparc/dbri: add missing fallthrough

2026-05-06 10:09:17 +02:00

spi

ALSA: spi/at73c213: Use guard() for spin locks

2025-09-17 14:07:02 +02:00

synth

ALSA: seq: Use flexible array for MIDI channels

2026-05-15 08:52:44 +02:00

usb

Merge branch 'for-linus' into for-next

2026-06-07 09:27:04 +02:00

virtio

ALSA: virtio: Add missing 384 kHz PCM rate mapping

2026-05-16 15:42:30 +02:00

x86

ASoC: Add SPDX ids to many soc files

2026-02-22 23:52:20 +00:00

xen

ALSA: xen-front: Connect event channel after stream prepare

2026-05-27 07:25:53 +02:00

ac97_bus.c

ALSA: ac97: clean up whitespace and move EXPORT_SYMBOLs

2026-05-04 17:58:30 +02:00

Kconfig

sound: Make CONFIG_SND depend on INDIRECT_IOMEM instead of UML

2024-10-10 16:11:18 +02:00

last.c

…

Makefile

ALSA: core: Use *-y instead of *-objs in Makefile

2024-05-08 18:17:32 +02:00

sound_core.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00