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-rw-r--r--security/lsm_audit.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/security/lsm_audit.c b/security/lsm_audit.c
index 90c129b0102f..8d8d97dbb389 100644
--- a/security/lsm_audit.c
+++ b/security/lsm_audit.c
@@ -213,12 +213,15 @@ static void dump_common_audit_data(struct audit_buffer *ab,
{
struct task_struct *tsk = current;
- if (a->tsk)
- tsk = a->tsk;
- if (tsk && tsk->pid) {
- audit_log_format(ab, " pid=%d comm=", tsk->pid);
- audit_log_untrustedstring(ab, tsk->comm);
- }
+ /*
+ * To keep stack sizes in check force programers to notice if they
+ * start making this union too large! See struct lsm_network_audit
+ * as an example of how to deal with large data.
+ */
+ BUILD_BUG_ON(sizeof(a->u) > sizeof(void *)*2);
+
+ audit_log_format(ab, " pid=%d comm=", tsk->pid);
+ audit_log_untrustedstring(ab, tsk->comm);
switch (a->type) {
case LSM_AUDIT_DATA_NONE: