1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/fs/s5fs/s5fs.c b/kernel/fs/s5fs/s5fs.c
index 73ecaa6..dedadaf 100644
--- a/kernel/fs/s5fs/s5fs.c
+++ b/kernel/fs/s5fs/s5fs.c
@@ -403,7 +403,9 @@ static long s5fs_mmap(vnode_t *file, mobj_t **ret)
     // NOT_YET_IMPLEMENTED("VM: s5fs_mmap");
 
     // Add a reference to the underlying mobj and return it
+    mobj_lock(&file->vn_mobj);
     mobj_ref(&file->vn_mobj);
+    mobj_unlock(&file->vn_mobj);
     *ret = &file->vn_mobj;
     return 0;
 }