1 files changed, 1 insertions, 1 deletions
diff --git a/exec.c b/exec.c
index 6ded59f..8a92e99 100644
--- a/exec.c
+++ b/exec.c
@@ -102,7 +102,7 @@ exec(char *path, char **argv)
   return 0;
 
  bad:
-  freevm(pgdir);
+  if (pgdir) freevm(pgdir);
   iunlockput(ip);
   return -1;
 }