From: Oleg Nesterov <oleg@redhat.com>
To: Thomas Gleixner <tglx@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Hyunwoo Kim <imv4bel@gmail.com>,
Frederic Weisbecker <frederic@kernel.org>,
Christian Brauner <brauner@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
John Stultz <jstultz@google.com>, Ingo Molnar <mingo@kernel.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Alan Stern <stern@rowland.harvard.edu>
Subject: Re: [patch V3 8/8] posix-timers: Handle exit in do_exit() completely
Date: Fri, 11 Sep 2026 16:02:28 +0200 [thread overview]
Message-ID: <aqQJ9JMK-p9JGUaJ@redhat.com> (raw)
In-Reply-To: <20260911090541.947206186@kernel.org>
On 09/11, Thomas Gleixner wrote:
>
> From: Thomas Gleixner <tglx@kernel.org>
>
> Now that POSIX CPU timers cannot be enqueued on a task after PF_EXITING is
> set and process wide timers cannot be enqueued when PF_EXITING is set and
> the last thread in the group is exiting, it is possible to mop up POSIX
> timers in do_exit() completely.
>
> This requires to cancel an eventually pending POSIX CPU timer task work
> right there because do_exit() invokes exit_task_work() later, which would
> be acting on torn down data.
> Signed-off-by: Thomas Gleixner <tglx@kernel.org>
> ---
> V3: Don't touch pending posix timer work on exec() - Oleg
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
next prev parent reply other threads:[~2026-09-11 14:02 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-11 9:09 [patch V3 0/8] exec/exit: POSIX timer related bugfixes and related cleanups Thomas Gleixner
2026-09-11 9:09 ` [patch V3 1/8] signal: Prevent exec() race Thomas Gleixner
2026-09-11 13:08 ` Frederic Weisbecker
2026-09-16 16:48 ` [tip: timers/core] " tip-bot2 for Thomas Gleixner
2026-09-16 20:37 ` [patch V3 1/8] " Andrea Parri
2026-09-11 9:09 ` [patch V3 2/8] exec: Cleanup POSIX timers right after de_thread() Thomas Gleixner
2026-09-16 16:48 ` [tip: timers/core] " tip-bot2 for Hyunwoo Kim
2026-09-11 9:09 ` [patch V3 3/8] posix-timers: Move posixtimer_exec_cleanup() out of exec.c Thomas Gleixner
2026-09-11 13:58 ` Oleg Nesterov
2026-09-16 16:48 ` [tip: timers/core] " tip-bot2 for Thomas Gleixner
2026-09-16 20:31 ` [patch V3 3/8] " Andrea Parri
2026-09-11 9:09 ` [patch V3 4/8] posix-timers: Move POSIX timer group exit related code out of do_exit() Thomas Gleixner
2026-09-11 13:59 ` Oleg Nesterov
2026-09-16 16:48 ` [tip: timers/core] " tip-bot2 for Thomas Gleixner
2026-09-11 9:09 ` [patch V3 5/8] posix-cpu-timers: Move inlines out of public header Thomas Gleixner
2026-09-11 13:59 ` Oleg Nesterov
2026-09-16 16:48 ` [tip: timers/core] " tip-bot2 for Thomas Gleixner
2026-09-11 9:09 ` [patch V3 6/8] posix-cpu-timers: Use PF_EXITING to indicate exit Thomas Gleixner
2026-09-11 13:15 ` Frederic Weisbecker
2026-09-11 14:00 ` Oleg Nesterov
2026-09-16 16:48 ` [tip: timers/core] " tip-bot2 for Thomas Gleixner
2026-09-16 20:21 ` [patch V3 6/8] " Andrea Parri
2026-09-11 9:09 ` [patch V3 7/8] posix-cpu-timers: Prevent enqueueing when PF_EXITING is set Thomas Gleixner
2026-09-12 21:09 ` Frederic Weisbecker
2026-09-16 16:48 ` [tip: timers/core] " tip-bot2 for Thomas Gleixner
2026-09-11 9:09 ` [patch V3 8/8] posix-timers: Handle exit in do_exit() completely Thomas Gleixner
2026-09-11 14:02 ` Oleg Nesterov [this message]
2026-09-12 22:17 ` Frederic Weisbecker
2026-09-16 16:48 ` [tip: timers/core] " tip-bot2 for Thomas Gleixner
2026-09-16 20:12 ` [patch V3 8/8] " Andrea Parri
2026-09-12 14:20 ` [patch V3 0/8] exec/exit: POSIX timer related bugfixes and related cleanups Kijo Park
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