Re: [PATCH] binder: make sure fd closes complete

From: Christian Brauner
Date: Tue Aug 31 2021 - 03:24:22 EST


On Mon, Aug 30, 2021 at 12:51:46PM -0700, Todd Kjos wrote:
> During BC_FREE_BUFFER processing, the BINDER_TYPE_FDA object
> cleanup may close 1 or more fds. The close operations are
> completed using the task work mechanism -- which means the thread
> needs to return to userspace or the file object may never be
> dereferenced -- which can lead to hung processes.
>
> Force the binder thread back to userspace if an fd is closed during
> BC_FREE_BUFFER handling.
>
> Signed-off-by: Todd Kjos <tkjos@xxxxxxxxxx>
> ---

Looks good. Thanks!
Acked-by: Christian Brauner <christian.brauner@xxxxxxxxxx>