tree e6775c8b4d5520b18f7d4032fe370f7420400441
parent f68bf8e8b44c5fe0af9997e98cec84963743c9b0
author Srinivasarao P <spathi@codeaurora.org> 1546935733 +0530
committer Gerrit - the friendly Code Review server <code-review@localhost> 1548145520 -0800

iommu/iommu-debug: fix buffer overflows in debugfs read functions

The kernel buffer 'ubuf' can overflow while copying data to user
space in debugfs read functions. Fix it by limiting the length of
data to be copied to userspace.

Change-Id: Ibb3d8c4fb637ddc0e63677ec2dff14a4cf8c0c73
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>