Quoting Tvrtko Ursulin (2020-03-09 18:31:19)
> @@ -92,8 +107,8 @@ __i915_drm_client_register(struct i915_drm_client *client,
> static void
> __i915_drm_client_unregister(struct i915_drm_client *client)
> {
> - put_pid(fetch_and_zero(&client->pid));
> - kfree(fetch_and_zero(&client->name));
> + put_pid(rcu_replace_pointer(client->pid, NULL, true));
> + kfree(rcu_replace_pointer(client->name, NULL, true));
client_unregister is not after an RCU grace period, so what's the
protection here?
-Chris
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