[PATCH v2 0/4] ALSA: Defer async signal handling

From: Takashi Iwai <tiwai@suse.de>
To: alsa-devel@alsa-project.org
Subject: [PATCH v2 0/4] ALSA: Defer async signal handling
Date: Thu, 28 Jul 2022 14:59:41 +0200	[thread overview]
Message-ID: <20220728125945.29533-1-tiwai@suse.de> (raw)

Hi,

this is a revised patch series for another attempt to address the
potential deadlocks via kill_fasync() calls that have been reported by
syzbot for long time.  Only a missing linux/fs.h inclusion was added
from v1 series[1].

Instead of the previous series to drop the async handler[2], 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

[1] https://lore.kernel.org/r/20220726153420.3403-1-tiwai@suse.de
[2] 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       | 94 +++++++++++++++++++++++++++++++++++++++++
 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, 117 insertions(+), 12 deletions(-)

-- 
2.35.3