Check if kaddr is valid

carloslack · Sep 27, 2024 · 1b251f3 · 1b251f3
1 parent aebebfc
commit 1b251f3
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/kovid.c b/src/kovid.c
@@ -677,11 +677,16 @@ static int _proc_watchdog(void *unused) {
  */
 static int _reset_tainted(void *unused) {
     struct kernel_syscalls *kaddr = kv_kall_load_addr();
+    if (!kaddr) {
+        prerr("_reset_tainted: Invalid data.\n");
+        goto out;
+    }
     while (!kthread_should_stop()) {
         kv_reset_tainted(kaddr->tainted);
         ssleep(5);
     }
 
+out:
     return 0;
 }