lkml.org 
[lkml]   [2019]   [Aug]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH] drm/amd/powerplay: Fix an off by one in navi10_get_smu_msg_index()
The navi10_message_map[] array has SMU_MSG_MAX_COUNT elements so the ">"
has to be changed to ">=" to prevent reading one element beyond the end
of the array.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
drivers/gpu/drm/amd/powerplay/navi10_ppt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
index d7e25f5113f1..fbecd25f150f 100644
--- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
@@ -213,7 +213,7 @@ static int navi10_get_smu_msg_index(struct smu_context *smc, uint32_t index)
{
struct smu_11_0_cmn2aisc_mapping mapping;

- if (index > SMU_MSG_MAX_COUNT)
+ if (index >= SMU_MSG_MAX_COUNT)
return -EINVAL;

mapping = navi10_message_map[index];
--
2.20.1
\
 
 \ /
  Last update: 2019-08-26 15:20    [W:0.039 / U:0.772 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site