tree 6db8b919174c9497b6ee98c7ec60d423a605589f
parent 4f9b1085ec92c321666e0f2992ffb4424a3a6615
author Ariel Yin <ayin@google.com> 1484348754 -0800
committer Ariel Yin <ayin@google.com> 1484777586 +0000

ANDROID: ion: check for kref overflow

Userspace can cause the kref to handles to increment
arbitrarily high. Ensure it does not overflow.

Signed-off-by: Daniel Rosenberg <drosen@google.com>

Bug: 31992382
Test: See bug for poc
Change-Id: I6bff1df385742b1d836d43180dc87fadcea80782