linux-kernel - [PATCH 0/3] ceph: minor fixes and encrypted snapshot names

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Date:   Fri,  4 Mar 2022 16:14:00 +0000
From:   Luís Henriques <lhenriques@...e.de>
To:     Jeff Layton <jlayton@...nel.org>, Xiubo Li <xiubli@...hat.com>,
        Ilya Dryomov <idryomov@...il.com>
Cc:     ceph-devel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Luís Henriques <lhenriques@...e.de>
Subject: [PATCH 0/3] ceph: minor fixes and encrypted snapshot names

Hi!

I'm sending another iteration of the encrypted snapshot names patch.  This
patch assumes PR#45224 [1] to be merged as it adds support for the
alternate names.

Two notes:

1. Patch 0001 is just a small fix from another fscrypt patch.  It's
   probably better to simply squash it.

2. I'm not sure how easy it is to hit the UAF fixed by patch 0002.  I can
   reproduce it easily by commenting the code that adds the
   DCACHE_NOKEY_NAME flag in patch 0003.

Any comments are welcome (including for the PR mentioned above, of course).

[1] https://github.com/ceph/ceph/pull/45224

Luís Henriques (3):
  ceph: fix error path in ceph_readdir()
  ceph: fix use-after-free in ceph_readdir
  ceph: add support for encrypted snapshot names

 fs/ceph/dir.c   | 11 ++++++++++-
 fs/ceph/inode.c | 13 +++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)