tree e76257aae2151bee03a47783047218741d7c7365
parent f2e58c0fe1616edb9fbf12f583a96e6cdf0e3e0e
author Veera Sundaram Sankaran <veeras@codeaurora.org> 1458092547 -0700
committer raghavendra ambadas <rambad@codeaurora.org> 1464670055 +0530

msm: mdss: fix possible out-of-bounds and overflow issue in mdp debugfs

There are few cases where the count argument passed by the user
space is not validated, which can potentially lead to out of bounds
or overflow issues. In some cases, kernel might copy more data than
what is requested. Add necessary checks to avoid such cases.

Change-Id: Ifa42fbd475665a0ca581c907ce5432584ea0e7ed
[veeras@codeaurora.org: Resolved conflicts in mdss_debug.c]
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>
Signed-off-by: Raghavendra Ambadas <rambad@codeaurora.org>