1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/as_gk20a.c b/drivers/gpu/nvgpu/gk20a/as_gk20a.c
index 34423d21..cd5cdd48 100644
--- a/drivers/gpu/nvgpu/gk20a/as_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/as_gk20a.c
@@ -265,6 +265,7 @@ long gk20a_as_dev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 
         BUG_ON(_IOC_SIZE(cmd) > NVGPU_AS_IOCTL_MAX_ARG_SIZE);
 
+        memset(buf, 0, sizeof(buf));
         if (_IOC_DIR(cmd) & _IOC_WRITE) {
                 if (copy_from_user(buf, (void __user *)arg, _IOC_SIZE(cmd)))
                         return -EFAULT;