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Commit c4ea41ba authored by Todd Kjos's avatar Todd Kjos Committed by Greg Kroah-Hartman
Browse files

binder: use group leader instead of open thread 



The binder allocator assumes that the thread that
called binder_open will never die for the lifetime of
that proc. That thread is normally the group_leader,
however it may not be. Use the group_leader instead
of current.

Signed-off-by: default avatarTodd Kjos <tkjos@google.com>
Cc: stable <stable@vger.kernel.org> # 4.4+
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a2b18708

drivers/android/binder.c

+2 −2
Original line number Diff line number Diff line
@@ -3460,8 +3460,8 @@ static int binder_open(struct inode *nodp, struct file *filp) 
	proc = kzalloc(sizeof(*proc), GFP_KERNEL);

	if (proc == NULL)

		return -ENOMEM;

	get_task_struct(current);

	proc->tsk = current;

	get_task_struct(current->group_leader);

	proc->tsk = current->group_leader;

	INIT_LIST_HEAD(&proc->todo);

	init_waitqueue_head(&proc->wait);

	proc->default_priority = task_nice(current);