[PATCH 0/4] ALSA: Defer async signal handling

[Takashi Iwai]

Hi,

this series is another attempt to address the potential deadlocks via
kill_fasync() calls that have been reported by syzbot for long time.
Instead of the previous series to drop the async handler[*], this
tries to defer the kill_fasync() call.  A few new common helpers are
introduced at first, then the actual usages are replaced in the
following patches.

The patches passed the quick tests with alsa-lib test cases.


Takashi

[*] https://lore.kernel.org/r/20220717070549.5993-1-tiwai@suse.de

===

Takashi Iwai (4):
  ALSA: core: Add async signal helpers
  ALSA: timer: Use deferred fasync helper
  ALSA: pcm: Use deferred fasync helper
  ALSA: control: Use deferred fasync helper

 include/sound/control.h |  2 +-
 include/sound/core.h    |  8 ++++
 include/sound/pcm.h     |  2 +-
 sound/core/control.c    |  7 ++--
 sound/core/misc.c       | 93 +++++++++++++++++++++++++++++++++++++++++
 sound/core/pcm.c        |  1 +
 sound/core/pcm_lib.c    |  2 +-
 sound/core/pcm_native.c |  2 +-
 sound/core/timer.c      | 11 ++---
 9 files changed, 116 insertions(+), 12 deletions(-)

-- 
2.35.3