From 3193c2cbabf440dc8d0a6d59ee630e7ad0813d67 Mon Sep 17 00:00:00 2001
From: Po-Hsien Wang <pwang@chromium.org>
Date: Wed, 25 Jul 2018 19:43:48 -0700
Subject: [PATCH] renderer: check for shader_text validity

Add a check for nonterminated string passed into the create_shader
code.

No point checking len <= 0, since it's a uint32_t.

Signed-off-by: Dave Airlie <airlied@redhat.com>
---
 src/vrend_renderer.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/vrend_renderer.c b/src/vrend_renderer.c
index 7c70b50..0f05168 100644
--- a/src/vrend_renderer.c
+++ b/src/vrend_renderer.c
@@ -2929,6 +2929,9 @@ int vrend_create_shader(struct vrend_context *ctx,
    bool finished = false;
    int ret;
 
+   if (pkt_length == 0 || shd_text[pkt_length - 1] != '\0')
+      return EINVAL;
+
    if (type > PIPE_SHADER_COMPUTE)
       return EINVAL;