linux-kernel - [PATCH 0/4 v2] perf: Fix leaked sigtrap events

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Date: Wed, 15 May 2024 16:43:07 +0200
From: Frederic Weisbecker <frederic@...nel.org>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Frederic Weisbecker <frederic@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [PATCH 0/4 v2] perf: Fix leaked sigtrap events

Hi,

After discussions with Sebastian, here is an updated version of
https://lore.kernel.org/all/20240329235812.18917-1-frederic@kernel.org/

Changes since v2:

* Use rcuwait instead of waitqueue (more RT-friendly when preemption is
  disabled)

* Add a few comments about RCU-ordering expectations

Thanks.

Frederic Weisbecker (4):
  task_work: s/task_work_cancel()/task_work_cancel_func()/
  task_work: Introduce task_work_cancel() again
  perf: Fix event leak upon exit
  perf: Fix event leak upon exec and file release

 include/linux/perf_event.h |  1 +
 include/linux/task_work.h  |  3 ++-
 kernel/events/core.c       | 45 ++++++++++++++++++++++++++++++++------
 kernel/irq/manage.c        |  2 +-
 kernel/task_work.c         | 34 +++++++++++++++++++++++-----
 security/keys/keyctl.c     |  2 +-
 6 files changed, 72 insertions(+), 15 deletions(-)

-- 
2.44.0