Re: [PATCH 0/2] ufs: harden the mount path against malformed images

[Christian Brauner]

On Sat, 01 Aug 2026 10:12:56 +0300, Ali Ahmet Memis wrote:
> Two robustness fixes for the ufs mount path, both reachable by mounting
> a crafted UFS image.
> 
> Patch 1 reorders ufs_fill_super() so the root dentry is created after the
> cylinder group metadata is loaded. Today a failure while reading the
> cylinder groups drops UFS_SB(sb) but leaves s_root installed, so the
> generic teardown oopses on a NULL pointer in ufs_sync_fs() and the
> put_super operation.
> 
> [...]

In the future, please cut down and rewrite LLM generated cover letters and
commit messages.

---

Applied to the vfs.fixes branch of the vfs/vfs.git tree.
Patches in the vfs.fixes branch should appear in linux-next soon.

Please report any outstanding bugs that were missed during review in a
new review to the original patch series allowing us to drop it.

It's encouraged to provide Acked-bys and Reviewed-bys even though the
patch has now been applied. If possible patch trailers will be updated.

Note that commit hashes shown below are subject to change due to rebase,
trailer updates or similar. If in doubt, please check the listed branch.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git
branch: vfs.fixes

[1/2] ufs: create the root dentry after loading cylinder metadata
      https://git.kernel.org/vfs/vfs/c/55a4c98abb96
[2/2] ufs: validate cylinder group metadata before caching it
      https://git.kernel.org/vfs/vfs/c/c9d263be2680