From: Davidlohr Bueso <dave@stgolabs.net>
To: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
linux-kernel@vger.kernel.org,
Andre Almeida <andrealmeid@collabora.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Darren Hart <dvhart@infradead.org>,
stable@vger.kernel.org
Subject: Re: [RFC PATCH] futex: Fix futex_waitv() hrtimer debug object leak on kcalloc error
Date: Thu, 15 Dec 2022 12:17:50 -0800 [thread overview]
Message-ID: <20221215201750.kefgg25ptsjbmq2u@offworld> (raw)
In-Reply-To: <20221214222008.200393-1-mathieu.desnoyers@efficios.com>
On Wed, 14 Dec 2022, Mathieu Desnoyers wrote:
>In a scenario where kcalloc() fails to allocate memory, the futex_waitv
>system call immediately returns -ENOMEM without invoking
>destroy_hrtimer_on_stack(). When CONFIG_DEBUG_OBJECTS_TIMERS=y, this
>results in leaking a timer debug object.
>
>Fixes: bf69bad38cf6 ("futex: Implement sys_futex_waitv()")
>Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
>Cc: Andre Almeida <andrealmeid@collabora.com>
>Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
>Cc: Thomas Gleixner <tglx@linutronix.de>
>Cc: Ingo Molnar <mingo@redhat.com>
>Cc: Darren Hart <dvhart@infradead.org>
>Cc: Davidlohr Bueso <dave@stgolabs.net>
>Cc: stable@vger.kernel.org # v5.16+
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
next prev parent reply other threads:[~2022-12-15 20:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-14 22:20 Mathieu Desnoyers
2022-12-15 20:17 ` Davidlohr Bueso [this message]
2022-12-27 11:58 ` [tip: locking/urgent] " tip-bot2 for Mathieu Desnoyers
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20221215201750.kefgg25ptsjbmq2u@offworld \
--to=dave@stgolabs.net \
--cc=andrealmeid@collabora.com \
--cc=dvhart@infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mathieu.desnoyers@efficios.com \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=stable@vger.kernel.org \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®