[PATCH 4.9 038/145] binder: check for binder_thread allocation failure in binder_poll()

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Eric Biggers commit f88982679f54f75daa5b8eff3da72508f1e7422f upstream. If the kzalloc() in binder_get_thread() fails, binder_poll() dereferences the resulting NULL

[PATCH 4.9 038/145] binder: check for binder_thread allocation failure in binder_poll()

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Eric Biggers commit f88982679f54f75daa5b8eff3da72508f1e7422f upstream. If the kzalloc() in binder_get_thread() fails, binder_poll() dereferences the resulting NULL pointer. Fix it by