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video: rockchip: mpp: fix potential spectre issue by using array_index_nospec

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Change-Id: I40018bac0f5406bc983fbd069c0dbf061f423669
Signed-off-by: Grey Li <grey.li@rock-chips.com>
This commit is contained in:
Grey Li
2020-01-17 09:50:47 +08:00
parent e195cba5b6
commit 2dc8014581
1 changed files with 2 additions and 0 deletions
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drivers/video/rockchip/mpp/mpp_common.c
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@@ -23,6 +23,7 @@
#include <linux/mfd/syscon.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/nospec.h>
#include <soc/rockchip/pm_domains.h>
@@ -776,6 +777,7 @@ static int mpp_process_request(struct mpp_session *session,
MPP_DEVICE_BUTT);
return -EINVAL;
}
client_type = array_index_nospec(client_type, MPP_DEVICE_BUTT);
mpp = srv->sub_devices[client_type];
if (!mpp)
return -EINVAL;