tree 8ecfa93b55f1b0bdc9123a2ab9d74d554dbaf90c
parent 01d7587c4f03aa97c8d618a3e067923f932e0c60
author Daniel Rosenberg <drosen@google.com> 1535670586 -0700
committer Daniel Rosenberg <drosen@google.com> 1536964159 -0700

staging: android: ion: check for kref overflow

This patch is against 4.9. It does not apply to master due to a large
rework of ion in 4.12 which removed the affected functions altogther.
4c23cbff073f3b9b ("staging: android: ion: Remove import interface")

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

Signed-off-by: Daniel Rosenberg <drosen@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>