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From: Josef Bacik <josef@toxicpanda.com>
To: Christian Brauner <brauner@kernel.org>
Cc: Jeff Layton <jlayton@kernel.org>,
	Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>,
	linux-fsdevel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH] pidfs: check for valid pid namespace
Date: Mon, 30 Sep 2024 14:13:00 -0400	[thread overview]
Message-ID: <20240930181300.GE667556@perftesting> (raw)
In-Reply-To: <20240926-klebt-altgedienten-0415ad4d273c@brauner>

On Thu, Sep 26, 2024 at 06:51:46PM +0200, Christian Brauner wrote:
> When we access a no-current task's pid namespace we need check that the
> task hasn't been reaped in the meantime and it's pid namespace isn't
> accessible anymore.
> 
> The user namespace is fine because it is only released when the last
> reference to struct task_struct is put and exit_creds() is called.
> 
> Fixes: 5b08bd408534 ("pidfs: allow retrieval of namespace file descriptors")
> CC: stable@vger.kernel.org # v6.11
> Signed-off-by: Christian Brauner <brauner@kernel.org>

Reviewed-by: Josef Bacik <josef@toxicpanda.com>

Thanks,

Josef

      reply	other threads:[~2024-09-30 18:13 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-09-26 16:51 [PATCH] pidfs: check for valid pid namespace Christian Brauner
2024-09-30 18:13 ` Josef Bacik [this message]

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