Lock the new task's scheduler when creating a task

Previously we were locking the spawning task's scheduler. I couldn't
see that that was protecting anything. The newborn_task list in the new task's
scheduler though was unprotected from concurrent access. So now we're locking
the new task's scheduler.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/rt/rust_upcall.cpp b/src/rt/rust_upcall.cpp
index 048be072e12..57512fd8c2a 100644
--- a/src/rt/rust_upcall.cpp
+++ b/src/rt/rust_upcall.cpp
@@ -526,7 +526,6 @@ extern "C" CDECL rust_task *
 upcall_new_task(rust_task *spawner, rust_vec *name) {
     // name is a rust string structure.
     LOG_UPCALL_ENTRY(spawner);
-    scoped_lock with(spawner->sched->lock);
     rust_task *task =
         spawner->kernel->create_task(spawner, (const char *)name->data);
     task->ref();