diff options
| author | Richard Guy Briggs <rgb@redhat.com> | 2013-11-21 13:31:40 -0500 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2019-07-06 11:52:53 +0200 |
| commit | cfb96c8cbf9ad8eb50503bfe0753fe9650170a97 (patch) | |
| tree | 9c0eb8aa93903a63cb4c83189b7ac339408c2cf9 | |
| parent | b2a0c241b512de170e57945451dfb7961d297d5c (diff) | |
selinux: call WARN_ONCE() instead of calling audit_log_start()
Two of the conditions in selinux_audit_rule_match() should never happen and
the third indicates a race that should be retried. Remove the calls to
audit_log() (which call audit_log_start()) and deal with the errors in the
caller, logging only once if the condition is met. Calling audit_log_start()
in this location makes buffer allocation and locking more complicated in the
calling tree (audit_filter_user()).
Change-Id: I37a49148817167673fa0ff32924d6661672be204
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
| -rw-r--r-- | security/selinux/ss/services.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c index 2678cbb93..461711027 100644 --- a/security/selinux/ss/services.c +++ b/security/selinux/ss/services.c @@ -3150,25 +3150,21 @@ int selinux_audit_rule_match(u32 sid, u32 field, u32 op, void *vrule, struct selinux_audit_rule *rule = vrule; int match = 0; - if (!rule) { - audit_log(actx, GFP_ATOMIC, AUDIT_SELINUX_ERR, - "selinux_audit_rule_match: missing rule\n"); + if (unlikely(!rule)) { + WARN_ONCE(1, "selinux_audit_rule_match: missing rule\n"); return -ENOENT; } read_lock(&policy_rwlock); if (rule->au_seqno < latest_granting) { - audit_log(actx, GFP_ATOMIC, AUDIT_SELINUX_ERR, - "selinux_audit_rule_match: stale rule\n"); match = -ESTALE; goto out; } ctxt = sidtab_search(&sidtab, sid); - if (!ctxt) { - audit_log(actx, GFP_ATOMIC, AUDIT_SELINUX_ERR, - "selinux_audit_rule_match: unrecognized SID %d\n", + if (unlikely(!ctxt)) { + WARN_ONCE(1, "selinux_audit_rule_match: unrecognized SID %d\n", sid); match = -ENOENT; goto out; |