From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
Davidlohr Bueso <dave@stgolabs.net>,
Keenan Dong <keenanat2000@gmail.com>,
Yuan Tan <yuantan098@gmail.com>, Yifan Wu <yifanwucs@gmail.com>,
Juefei Pu <tomapufckgml@gmail.com>, Xin Liu <bird@lzu.edu.cn>,
Thomas Gleixner <tglx@kernel.org>,
Sid Kumar <sidkumar1@gmail.com>
Subject: Re: [PATCH 5.15.y v2 1/2] rtmutex: Use waiter::task instead of current in remove_waiter()
Date: Fri, 10 Jul 2026 17:02:58 -0400 [thread overview]
Message-ID: <20260710163023.agent5-0002@kernel.org> (raw)
In-Reply-To: <20260709145949.3640783-1-sidkumar1@gmail.com>
On Thu, Jul 09, 2026 at 10:59:48AM -0400, Sid Kumar wrote:
> remove_waiter() is used by the slowlock paths, but it is also used for
> proxy-lock rollback in rt_mutex_start_proxy_lock() when invoked from
> futex_requeue().
>
> In the latter case waiter::task is not current, but remove_waiter()
> operates on current for the dequeue operation. That results in several
> problems:
Queued the series for 5.15, thanks.
--
Thanks,
Sasha
prev parent reply other threads:[~2026-07-10 21:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-09 14:59 [PATCH 5.15.y v2 1/2] rtmutex: Use waiter::task instead of current in remove_waiter() Sid Kumar
2026-07-09 14:59 ` [PATCH 5.15.y v2 2/2] locking/rtmutex: Skip remove_waiter() when waiter is not enqueued Sid Kumar
2026-07-10 21:02 ` Sasha Levin [this message]
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