From: Song Liu <song@kernel.org>
To: linux-security-module@vger.kernel.org,
linux-fsdevel@vger.kernel.org, selinux@vger.kernel.org,
apparmor@lists.ubuntu.com
Cc: paul@paul-moore.com, jmorris@namei.org, serge@hallyn.com,
viro@zeniv.linux.org.uk, brauner@kernel.org, jack@suse.cz,
john.johansen@canonical.com, stephen.smalley.work@gmail.com,
omosnace@redhat.com, mic@digikod.net, gnoack@google.com,
takedakn@nttdata.co.jp, penguin-kernel@I-love.SAKURA.ne.jp,
herton@canonical.com, kernel-team@meta.com,
Song Liu <song@kernel.org>
Subject: [PATCH v3 2/7] apparmor: Remove redundant MS_MGC_MSK stripping in apparmor_sb_mount
Date: Fri, 8 May 2026 18:52:03 -0700 [thread overview]
Message-ID: <20260509015208.3853132-3-song@kernel.org> (raw)
In-Reply-To: <20260509015208.3853132-1-song@kernel.org>
path_mount() already strips the magic number from flags before
calling security_sb_mount(), so this check in apparmor_sb_mount()
is a no-op. Remove it.
Code generated with the assistance of Claude, reviewed by human.
Signed-off-by: Song Liu <song@kernel.org>
---
security/apparmor/lsm.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index 3491e9f60194..4415bca5889c 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -705,10 +705,6 @@ static int apparmor_sb_mount(const char *dev_name, const struct path *path,
int error = 0;
bool needput;
- /* Discard magic */
- if ((flags & MS_MGC_MSK) == MS_MGC_VAL)
- flags &= ~MS_MGC_MSK;
-
flags &= ~AA_MS_IGNORE_MASK;
label = __begin_current_label_crit_section(&needput);
--
2.53.0-Meta
next prev parent reply other threads:[~2026-05-09 1:52 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-09 1:52 [PATCH v3 0/7] lsm: Replace security_sb_mount with granular mount hooks Song Liu
2026-05-09 1:52 ` [PATCH v3 1/7] lsm: Add granular mount hooks to replace security_sb_mount Song Liu
2026-05-09 1:52 ` Song Liu [this message]
2026-05-09 1:52 ` [PATCH v3 3/7] apparmor: Convert from sb_mount to granular mount hooks Song Liu
2026-05-09 1:52 ` [PATCH v3 4/7] selinux: " Song Liu
2026-05-09 1:52 ` [PATCH v3 5/7] landlock: " Song Liu
2026-05-09 1:52 ` [PATCH v3 6/7] tomoyo: " Song Liu
2026-05-09 1:52 ` [PATCH v3 7/7] lsm: Remove security_sb_mount and security_move_mount Song Liu
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