hte: tegra-194: Fix off by one in tegra_hte_map_to_line_id()

[ Upstream commit e078180d66848a6a890daf0a3ce28dc43cc66790 ]

The "map_sz" is the number of elements in the "m" array so the >
comparison needs to be changed to >= to prevent an out of bounds
read.

Fixes: 09574cca6ad6 ("hte: Add Tegra194 HTE kernel provider")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Dipen Patel <dipenp@nvidia.com>
Signed-off-by: Dipen Patel <dipenp@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/hte/hte-tegra194.c b/drivers/hte/hte-tegra194.c
index 49a27af..d1b579c 100644 (file)
--- a/drivers/hte/hte-tegra194.c
+++ b/drivers/hte/hte-tegra194.c
@@ -251,7 +251,7 @@ static int tegra_hte_map_to_line_id(u32 eid,
 {
 
        if (m) {
-               if (eid > map_sz)
+               if (eid >= map_sz)
                        return -EINVAL;
                if (m[eid].slice == NV_AON_SLICE_INVALID)
                        return -EINVAL;