From 1a20ac7891f08369da36df82572f12860ec528ce Mon Sep 17 00:00:00 2001
From: Karol Herbst <git@karolherbst.de>
Date: Thu, 31 Aug 2023 12:31:16 +0200
Subject: [PATCH] rusticl/disk_cache: fix stack corruption

The length passed to mesa_bytes_to_hex is the one of the input, not output
data.

Fixes: fbe9a7ca3e7 ("rusticl/mesa: create proper build-id hash for the disk cache")
Signed-off-by: Karol Herbst <git@karolherbst.de>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24967>
---
 src/gallium/frontends/rusticl/mesa/util/disk_cache.rs | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/src/gallium/frontends/rusticl/mesa/util/disk_cache.rs b/src/gallium/frontends/rusticl/mesa/util/disk_cache.rs
index d07d57ed071..ce272e83d78 100644
--- a/src/gallium/frontends/rusticl/mesa/util/disk_cache.rs
+++ b/src/gallium/frontends/rusticl/mesa/util/disk_cache.rs
@@ -89,11 +89,7 @@ impl DiskCache {
                 }
             }
             SHA1Final(&mut sha, &mut sha_ctx);
-            mesa_bytes_to_hex(
-                cache_id.as_mut_ptr(),
-                sha.as_ptr(),
-                (cache_id.len() - 1) as u32,
-            );
+            mesa_bytes_to_hex(cache_id.as_mut_ptr(), sha.as_ptr(), sha.len() as u32);
             disk_cache_create(c_name.as_ptr(), cache_id.as_ptr(), flags)
         };