From: sashiko-bot@kernel.org
To: "Cai Xinchen" <caixinchen1@huawei.com>
Cc: bpf@vger.kernel.org, selinux@vger.kernel.org
Subject: Re: [PATCH v2 stable/linux-6.6.y 2/3] lsm: add backing_file LSM hooks
Date: Sat, 27 Jun 2026 06:41:17 +0000 [thread overview]
Message-ID: <20260627064117.A8B151F000E9@smtp.kernel.org> (raw)
In-Reply-To: <20260627065720.1945589-3-caixinchen1@huawei.com>
> From: Paul Moore <paul@paul-moore.com>
>
> [ Upstream commit 6af36aeb147a06dea47c49859cd6ca5659aeb987 ]
>
> Stacked filesystems such as overlayfs do not currently provide the
> necessary mechanisms for LSMs to properly enforce access controls on the
> mmap() and mprotect() operations. In order to resolve this gap, a LSM
> security blob is being added to the backing_file struct and the following
> new LSM hooks are being created:
>
> security_backing_file_alloc()
> security_backing_file_free()
> security_mmap_backing_file()
>
> The first two hooks are to manage the lifecycle of the LSM security blob
> [ ... ]
> are dropped in the 6.6 LTS backport.
>
> 4. Use macro backing_file to replace inline function to eliminate the
> const warning.]
> Signed-off-by: Cai Xinchen <caixinchen1@huawei.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260627065720.1945589-1-caixinchen1@huawei.com?part=2
next prev parent reply other threads:[~2026-06-27 6:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-27 6:57 [PATCH v2 stable/linux-6.6.y 0/3] Backport Fix incorrect overlayfs mmap() and mprotect() LSM access controls Cai Xinchen
2026-06-27 6:57 ` [PATCH v2 stable/linux-6.6.y 1/3] fs: prepare for adding LSM blob to backing_file Cai Xinchen
2026-06-27 6:34 ` sashiko-bot
2026-06-27 6:57 ` [PATCH v2 stable/linux-6.6.y 2/3] lsm: add backing_file LSM hooks Cai Xinchen
2026-06-27 6:41 ` sashiko-bot [this message]
2026-06-27 6:57 ` [PATCH v2 stable/linux-6.6.y 3/3] selinux: fix overlayfs mmap() and mprotect() access checks Cai Xinchen
2026-06-27 6:36 ` sashiko-bot
2026-06-28 3:33 ` [PATCH v2 stable/linux-6.6.y 0/3] Backport Fix incorrect overlayfs mmap() and mprotect() LSM access controls Sasha Levin
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