Audit: use == not = in if statements

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>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index ac6d9b23b018676873026cc0334baccedeb2a7cc..2087d6de67ea4b6ce90b347d0f43a56dbdbad9d3 100644 (file)
--- 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';