From: Frederick Lawler <fred@cloudflare.com>
To: Andreas Hindborg <a.hindborg@kernel.org>,
Breno Leitao <leitao@debian.org>,
Mimi Zohar <zohar@linux.ibm.com>,
Roberto Sassu <roberto.sassu@huawei.com>,
Dmitry Kasatkin <dmitry.kasatkin@gmail.com>,
Eric Snowberg <eric.snowberg@oracle.com>,
Paul Moore <paul@paul-moore.com>,
James Morris <jmorris@namei.org>,
"Serge E. Hallyn" <serge@hallyn.com>
Cc: linux-kernel@vger.kernel.org, linux-integrity@vger.kernel.org,
linux-security-module@vger.kernel.org,
kernel-team@cloudflare.com,
Frederick Lawler <fred@cloudflare.com>,
syzbot+448c2e24b1ceff13ed2a@syzkaller.appspotmail.com
Subject: [PATCH 0/2] ima: don't measure/appraise files on configfs
Date: Tue, 18 Aug 2026 14:35:14 -0500 [thread overview]
Message-ID: <20260818-configfs-v1-0-a2329043cf86@cloudflare.com> (raw)
When IMA appraises/measures a file configfs, it has an opportunity to
hold onto the ima_iint_mutex while another file from a different file
system is attempting to appraise/measure. This may cause a cyclical
lock dependency.
Add configfs to the default don't measure/appraise lists, similarly to
other pseudo file systems.
Link: https://lore.kernel.org/all/6a77c7cd.b50370da.49fe0.0031.GAE@google.com/#t
Signed-off-by: Frederick Lawler <fred@cloudflare.com>
---
Frederick Lawler (2):
configfs: move CONFIGFS_MAGIC definition to magic.h
ima: don't measure/appraise files on configfs
fs/configfs/mount.c | 4 +---
include/uapi/linux/magic.h | 1 +
security/integrity/ima/ima_policy.c | 7 ++++++-
3 files changed, 8 insertions(+), 4 deletions(-)
---
base-commit: f1e10b10874051e4d99911dae0dd7b75a9f8ae66
change-id: 20260818-configfs-a248c410b083
Best regards,
--
Frederick Lawler <fred@cloudflare.com>
next reply other threads:[~2026-08-18 19:35 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-18 19:35 Frederick Lawler [this message]
2026-08-18 19:35 ` [PATCH 1/2] configfs: move CONFIGFS_MAGIC definition to magic.h Frederick Lawler
2026-08-19 9:21 ` Breno Leitao
2026-08-18 19:35 ` [PATCH 2/2] ima: don't measure/appraise files on configfs Frederick Lawler
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