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From: Tejun Heo <tj@kernel.org>
To: Chen Ridong <chenridong@huaweicloud.com>
Cc: gregkh@linuxfoundation.org, hannes@cmpxchg.org, mkoutny@suse.com,
	peterz@infradead.org, zhouchengming@bytedance.com,
	linux-kernel@vger.kernel.org, cgroups@vger.kernel.org,
	lujialin4@huawei.com, chenridong@huawei.com,
	libaokun1@huawei.com
Subject: Re: [PATCH v2 2/2] cgroup/psi: Set of->priv to NULL upon file release
Date: Fri, 22 Aug 2025 07:48:08 -1000	[thread overview]
Message-ID: <aKitWH39wpfTF5st@slm.duckdns.org> (raw)
In-Reply-To: <20250822070715.1565236-3-chenridong@huaweicloud.com>

On Fri, Aug 22, 2025 at 07:07:15AM +0000, Chen Ridong wrote:
> From: Chen Ridong <chenridong@huawei.com>
> 
> Setting of->priv to NULL when the file is released enables earlier bug
> detection. This allows potential bugs to manifest as NULL pointer
> dereferences rather than use-after-free errors[1], which are generally more
> difficult to diagnose.
> 
> [1] https://lore.kernel.org/cgroups/38ef3ff9-b380-44f0-9315-8b3714b0948d@huaweicloud.com/T/#m8a3b3f88f0ff3da5925d342e90043394f8b2091b
> Signed-off-by: Chen Ridong <chenridong@huawei.com>

Applied to cgroup/for-6.17-fixes.

Thanks.

-- 
tejun

  reply	other threads:[~2025-08-22 17:48 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-22  7:07 [PATCH v2 0/2] kernfs: Fix UAF in PSI polling when open file is released Chen Ridong
2025-08-22  7:07 ` [PATCH v2 1/2] kernfs: Fix UAF in " Chen Ridong
2025-08-22  7:47   ` Greg KH
2025-08-22 17:46   ` Tejun Heo
2025-08-23  0:23     ` Chen Ridong
2025-08-22  7:07 ` [PATCH v2 2/2] cgroup/psi: Set of->priv to NULL upon file release Chen Ridong
2025-08-22 17:48   ` Tejun Heo [this message]
2025-08-23  6:43     ` Greg KH
2025-08-25 17:32       ` Tejun Heo
2025-09-01  1:38         ` Chen Ridong
2025-09-01  6:06           ` Greg KH

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