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-rw-r--r--security/lsm_audit.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/security/lsm_audit.c b/security/lsm_audit.c
index e796d2517653..8d8d97dbb389 100644
--- a/security/lsm_audit.c
+++ b/security/lsm_audit.c
@@ -213,6 +213,13 @@ static void dump_common_audit_data(struct audit_buffer *ab,
{
struct task_struct *tsk = current;
+ /*
+ * 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);