diff options
| author | Ondrej Mosnacek <omosnace@redhat.com> | 2022-02-21 17:06:49 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-02 13:47:48 +0300 |
| commit | af091cc27e3766455e121e4f03a8057dec3c73c7 (patch) | |
| tree | 93389b5ec34bf8301aa51678516169d7c61a3077 /security | |
| parent | 0d773aaf5a90e2856301bd30781bf107db917a66 (diff) | |
| download | linux-af091cc27e3766455e121e4f03a8057dec3c73c7.tar.xz | |
selinux: fix misuse of mutex_is_locked()
commit ce2fc710c9d2b25afc710f49bb2065b4439a62bc upstream.
mutex_is_locked() tests whether the mutex is locked *by any task*, while
here we want to test if it is held *by the current task*. To avoid
false/missed WARNINGs, use lockdep_assert_is_held() and
lockdep_assert_is_not_held() instead, which do the right thing (though
they are a no-op if CONFIG_LOCKDEP=n).
Cc: stable@vger.kernel.org
Fixes: 2554a48f4437 ("selinux: measure state and policy capabilities")
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'security')
| -rw-r--r-- | security/selinux/ima.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/security/selinux/ima.c b/security/selinux/ima.c index 727c4e43219d..ff7aea6b3774 100644 --- a/security/selinux/ima.c +++ b/security/selinux/ima.c @@ -77,7 +77,7 @@ void selinux_ima_measure_state_locked(struct selinux_state *state) size_t policy_len; int rc = 0; - WARN_ON(!mutex_is_locked(&state->policy_mutex)); + lockdep_assert_held(&state->policy_mutex); state_str = selinux_ima_collect_state(state); if (!state_str) { @@ -117,7 +117,7 @@ void selinux_ima_measure_state_locked(struct selinux_state *state) */ void selinux_ima_measure_state(struct selinux_state *state) { - WARN_ON(mutex_is_locked(&state->policy_mutex)); + lockdep_assert_not_held(&state->policy_mutex); mutex_lock(&state->policy_mutex); selinux_ima_measure_state_locked(state); |