linux-kernel - [PATCH v2 0/5] audit: refactors and fixes for potential deadlocks

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Message-Id: <20230511052116.19452-1-eiichi.tsukata@nutanix.com>
Date:   Thu, 11 May 2023 05:21:11 +0000
From:   Eiichi Tsukata <eiichi.tsukata@...anix.com>
To:     paul@...l-moore.com, eparis@...hat.com,
        linux-kernel@...r.kernel.org, audit@...r.kernel.org
Cc:     Eiichi Tsukata <eiichi.tsukata@...anix.com>
Subject: [PATCH v2 0/5] audit: refactors and fixes for potential deadlocks

This patchset consists of the following refactors and fixes for
potential deadlocks.

  Patch1-3: Refactorings and a small fix preferable for following deadlock fixes
  Patch4: Fix for deadlock caused by wait/wake_up race in @audit_queue full
  Patch5: Fix for deadlock caused by missing wake_up

v1->v2:
  - wait_for_kauditd(): returns 0 if @audit_queue is not full
  - Add another fix for deadlock caused by missing wake_up

Eiichi Tsukata (5):
  audit: refactor queue full checks
  audit: account backlog waiting time in audit_receive()
  audit: convert DECLARE_WAITQUEUE to DEFINE_WAIT
  audit: check if audit_queue is full after prepare_to_wait_exclusive()
  audit: do not use exclusive wait in audit_receive()

 kernel/audit.c | 78 ++++++++++++++++++++++++++++++++------------------
 1 file changed, 50 insertions(+), 28 deletions(-)

-- 
2.40.0