Retry rather than panic if clone_entry is unset.

2023-04-09 12:04:08 +02:00
parent 4bf307d88e
commit 62eab8a2fe
1 changed files with 9 additions and 4 deletions
@@ -1358,11 +1358,16 @@ impl KernelScheme for ProcScheme {
 extern "C" fn clone_handler() {
    let context_lock = Arc::clone(context::contexts().current().expect("expected the current context to be set in a spawn closure"));

-    unsafe {
-        let [ip, sp] = context_lock.read().clone_entry.expect("clone_entry must be set");
-        let [arg, is_singlestep] = [0; 2];
+    loop {
+        unsafe {
+            let Some([ip, sp]) = context_lock.read().clone_entry else {
+                context_lock.write().status = Status::Stopped(SIGSTOP);
+                continue;
+            };
+            let [arg, is_singlestep] = [0; 2];

-        crate::start::usermode(ip, sp, arg, is_singlestep);
+            crate::start::usermode(ip, sp, arg, is_singlestep);
+        }
    }
 }