* Re: [PATCH v2 stable/linux-6.12.y 0/2] Backport Fix incorrect overlayfs mmap() and mprotect() LSM access controls
From: Sasha Levin @ 2026-06-27 16:35 UTC (permalink / raw)
To: viro, brauner, jack, miklos, amir73il, paul, jmorris, serge,
stephen.smalley.work, omosnace, gregkh, bboscaccy, caixinchen1
Cc: Sasha Levin, linux-fsdevel, linux-kernel, linux-unionfs,
linux-security-module, selinux, bpf, stable, lujialin4
In-Reply-To: <20260627042835.1492435-1-caixinchen1@huawei.com>
> [PATCH v2 stable/linux-6.12.y 0/2] Backport Fix incorrect overlayfs
> mmap() and mprotect() LSM access controls
>
> [PATCH 2/2] selinux: fix overlayfs mmap() and mprotect() access checks
Thanks for the backport. I think there's a small issue: the selinux patch calls
backing_file_user_path() with a 'const struct file *', but in 6.12 that
accessor still takes a non-const file pointer, so the build produces
const-discard warnings.
The cleanest fix is to also include the upstream prerequisite:
4e301d858af17a ("fs: constify file ptr in backing_file accessor helpers")
--
Thanks,
Sasha
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