procfs: check parent entry to avoid page fault in procfs_exit()

2015-01-31 22:27:04 -08:00
parent 5f5ab34559
commit a5bdd41c3d
1 changed files with 3 additions and 1 deletions
--- a/executer/kernel/procfs.c
+++ b/executer/kernel/procfs.c
@@ -462,7 +462,9 @@ void procfs_exit(int osnum) {
 			} else {
 				r += 1;
 			}
-			remove_proc_entry(r, parent->entry);
+			if (parent) {
+				remove_proc_entry(r, parent->entry);
+			}
 			dprintk("free the entry\n");
 			kfree(e);
 		}