Takashi Iwai af8d077350 ALSA: seq: Set upper limit of processed events ... [ Upstream commit 6fadb494a6 ] Currently ALSA sequencer core tries to process the queued events as much as possible when they become dispatchable. If applications try to queue too massive events to be processed at the very same timing, the sequencer core would still try to process such all events, either in the interrupt context or via some notifier; in either away, it might be a cause of RCU stall or such problems. As a potential workaround for those problems, this patch adds the upper limit of the amount of events to be processed. The remaining events are processed in the next batch, so they won't be lost. For the time being, it's limited up to 1000 events per queue, which should be high enough for any normal usages. Reported-by: Zqiang <qiang.zhang1211@gmail.com> Reported-by: syzbot+bb950e68b400ab4f65f8@syzkaller.appspotmail.com Link: https://lore.kernel.org/r/20211102033222.3849-1-qiang.zhang1211@gmail.com Link: https://lore.kernel.org/r/20211207165146.2888-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-01-27 10:54:22 +01:00
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oss	ALSA: oss: fix compile error when OSS_DEBUG is enabled	2022-01-27 10:54:06 +01:00
seq	ALSA: seq: Set upper limit of processed events	2022-01-27 10:54:22 +01:00
compress_offload.c
control_compat.c	ALSA: ctl: Fix copy of updated id with element read/write	2021-12-14 11:32:38 +01:00
control.c
ctljack.c
device.c
hrtimer.c
hwdep_compat.c
hwdep.c
info_oss.c
info.c
init.c
isadma.c
jack.c	ALSA: jack: Add missing rwsem around snd_ctl_remove() calls	2022-01-27 10:54:04 +01:00
Kconfig
Makefile	ALSA: ISA: not for M68K	2021-11-26 10:39:10 +01:00
memalloc.c
memory.c
misc.c
pcm_compat.c	ALSA: pcm: Workaround for a wrong offset in SYNC_PTR compat ioctl	2021-10-20 11:44:57 +02:00
pcm_dmaengine.c
pcm_drm_eld.c
pcm_iec958.c
pcm_lib.c	ALSA: pcm: fix divide error in snd_pcm_lib_ioctl	2021-09-08 08:49:01 +02:00
pcm_local.h
pcm_memory.c
pcm_misc.c
pcm_native.c	ALSA: pcm: Fix mmap breakage without explicit buffer setup	2021-08-15 14:00:26 +02:00
pcm_param_trace.h
pcm_timer.c
pcm_trace.h
pcm.c	ALSA: PCM: Add missing rwsem around snd_ctl_remove() calls	2022-01-27 10:54:04 +01:00
rawmidi_compat.c
rawmidi.c
seq_device.c	ALSA: seq: Fix a potential UAF by wrong private_free call order	2021-10-20 11:44:57 +02:00
sgbuf.c
sound_oss.c
sound.c
timer_compat.c
timer.c	ALSA: timer: Unconditionally unlink slave instances, too	2021-11-18 14:03:40 +01:00
vmaster.c