gpu: nvgpu: fix memory corrupt

replace sprinf with snprintf in func gk20a_channel_syncpt_create.
sync point name can be long.

Bug 1638853

Change-Id: Ie305d04edfbb299c8b1241eca52101439bb4a6c6
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-on: http://git-master/r/769113
Reviewed-on: http://git-master/r/776424
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Aingara Paramakuru <aparamakuru@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vladislav Buzov <vbuzov@nvidia.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
index 09814568..7f70d347 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
@@ -313,7 +313,7 @@ static struct gk20a_channel_sync *
 gk20a_channel_syncpt_create(struct channel_gk20a *c)
 {
         struct gk20a_channel_syncpt *sp;
-        char syncpt_name[16];
+        char syncpt_name[32];
 
         sp = kzalloc(sizeof(*sp), GFP_KERNEL);
         if (!sp)
@@ -322,7 +322,8 @@ gk20a_channel_syncpt_create(struct channel_gk20a *c)
         sp->c = c;
         sp->host1x_pdev = c->g->host1x_dev;
 
-        sprintf(syncpt_name, "%s_%d", dev_name(&c->g->dev->dev), c->hw_chid);
+        snprintf(syncpt_name, sizeof(syncpt_name),
+                "%s_%d", dev_name(&c->g->dev->dev), c->hw_chid);
 
         sp->id = nvhost_get_syncpt_host_managed(sp->host1x_pdev,
                                                 c->hw_chid, syncpt_name);