Commit 07f62eb6 authored by Eric Paris's avatar Eric Paris

LSM: BUILD_BUG_ON if the common_audit_data union ever grows

We did a lot of work to shrink the common_audit_data.  Add a BUILD_BUG_ON
so future programers (let's be honest, probably me) won't do something
foolish like make it large again!
Signed-off-by: default avatarEric Paris <>
parent b466066f
......@@ -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);
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