4.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Eric Biggers <[email protected]> When commit 4be5a2810489 ("binder: check for binder_thread allocation failure in binder_poll()") was applied to 4.4-stable and 4.9-stable it was forgotten to release the global binder lock in the new error path. The global binder lock wasn't removed until v4.14, by commit a60b890f607d ("binder: remove global binder lock"). Fix the new error path to release the lock. Reported-by: Guenter Roeck <[email protected]> Signed-off-by: Eric Biggers <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/android/binder.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -2622,8 +2622,10 @@ static unsigned int binder_poll(struct f binder_lock(__func__); thread = binder_get_thread(proc); - if (!thread) + if (!thread) { + binder_unlock(__func__); return POLLERR; + } wait_for_proc_work = thread->transaction_stack == NULL && list_empty(&thread->todo) && thread->return_error == BR_OK;
