[PATCH] Audit: use == not = in if statements

[Eric Paris <eparis@redhat.com>]

Clearly this was supposed to be an == not an = in the if statement.
This patch also causes us to stop processing execve args once we have
failed rather than continuing to loop on failure over and over and over.

Signed-off-by: Eric Paris <eparis@redhat.com>

---

 kernel/auditsc.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index ac6d9b2..2087d6d 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -1000,9 +1000,10 @@ static int audit_log_single_execve_arg(struct audit_context *context,
 	 * for strings that are too long, we should not have created
 	 * any.
 	 */
-	if (unlikely((len  = -1) || len > MAX_ARG_STRLEN - 1)) {
+	if (unlikely((len == -1) || len > MAX_ARG_STRLEN - 1)) {
 		WARN_ON(1);
 		send_sig(SIGKILL, current, 0);
+		return -1;
 	}
 
 	/* walk the whole argument looking for non-ascii chars */
@@ -1020,6 +1021,7 @@ static int audit_log_single_execve_arg(struct audit_context *context,
 		if (ret) {
 			WARN_ON(1);
 			send_sig(SIGKILL, current, 0);
+			return -1;
 		}
 		buf[to_send] = '\0';
 		has_cntl = audit_string_contains_control(buf, to_send);
@@ -1083,6 +1085,7 @@ static int audit_log_single_execve_arg(struct audit_context *context,
 		if (ret) {
 			WARN_ON(1);
 			send_sig(SIGKILL, current, 0);
+			return -1;
 		}
 		buf[to_send] = '\0';