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>

1 files changed, 4 insertions, 1 deletions

diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index ac6d9b23b018..2087d6de67ea 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';