[PATCH 0/2] nilfs2: robustness fixes from Jake Labelle

From: Ryusuke Konishi

Date: Thu Oct 08 2026 - 07:56:17 EST


Hi Viacheslav,

Please add the following two commits from Jake Labelle to your queue
for the next cycle.

As this cycle is getting closer to its end, I am sending these ahead with
a minor fix applied. If Jake responds with further comments or revised
proposals later, we can discuss them as needed.

These patches address two robustness issues:

- Patch 1/2 rejects special inodes during dsync recovery to prevent
dereferencing uninitialized bmap function pointers.
- Patch 2/2 validates and snaps the directory position after llseek in
nilfs_readdir() to prevent invalid or out-of-bounds page reads.

For full context and background details, please refer to the original
cover letter here:

https://lore.kernel.org/all/20260930000954.371774-1-southampton.jake.labelle@xxxxxxxxx

Thanks,
Ryusuke Konishi

Jake Labelle (2):
nilfs2: reject non-regular inodes in dsync recovery
nilfs2: validate directory position after llseek in readdir

fs/nilfs2/dir.c | 34 ++++++++++++++++++++++++++++++++++
fs/nilfs2/recovery.c | 17 +++++++++++++++++
2 files changed, 51 insertions(+)

--
2.53.0