kernel_samsung_sm7125

jenna

History

Takashi Iwai 382225e62b ALSA: usb-audio: fix oops due to cleanup race when disconnecting When a USB audio device is disconnected, snd_usb_audio_disconnect() kills all audio URBs. At the same time, the application, after being notified of the disconnection, might close the device, in which case ALSA calls the .hw_free callback, which should free the URBs too. Commit `de1b8b93a0` "[ALSA] Fix hang-up at disconnection of usb-audio" prevented snd_usb_hw_free() from freeing the URBs to avoid a hang that resulted from this race, but this introduced another race because the URB callbacks could now be executed after snd_usb_hw_free() has returned, and try to access already freed data. Fix the first race by introducing a mutex to serialize the disconnect callback and all PCM callbacks that manage URBs (hw_free and hw_params). Reported-and-tested-by: Pierre-Louis Bossart <pierre-louis.bossart@intel.com> Cc: <stable@kernel.org> [CL: also serialize hw_params callback] Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>		14 years ago
..
caiaq	ALSA: caiaq - Fix possible string-buffer overflow	14 years ago
misc	…
usx2y	ALSA: snd-usb-us122l: Fix missing NULL checks	14 years ago
Kconfig	…
Makefile	…
card.c	ALSA: usb-audio: fix oops due to cleanup race when disconnecting	14 years ago
card.h	…
clock.c	…
clock.h	…
debug.h	…
endpoint.c	…
endpoint.h	…
format.c	…
format.h	…
helper.c	…
helper.h	…
midi.c	…
midi.h	…
mixer.c	ALSA: usbaudio - Enable the E-MU 0204 USB	14 years ago
mixer.h	…
mixer_maps.c	…
mixer_quirks.c	…
mixer_quirks.h	…
pcm.c	ALSA: usb-audio: fix oops due to cleanup race when disconnecting	14 years ago
pcm.h	…
proc.c	…
proc.h	…
quirks-table.h	ALSA: usbaudio - Enable the E-MU 0204 USB	14 years ago
quirks.c	ALSA: usbaudio - Enable the E-MU 0204 USB	14 years ago
quirks.h	…
urb.c	…
urb.h	…
usbaudio.h	ALSA: usb-audio: fix oops due to cleanup race when disconnecting	14 years ago