[Mesa-dev] [PATCH 1/2] radv: place pointer length into cache uuid

[Grazvydas Ignotas]

Thanks to reproducible builds, binary file timestamps may be identical
for both 32bit and 64bit packages when built from the same source.
This means radv will use the same cache for both 32 and 64 bit
processes, which leads to crashes.

Conveniently there is a spare byte in cache_uuid, let's place the
pointer size there.

Fixes: f4e499ec79 "radv: add initial non-conformant radv vulkan driver"
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107601
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105904
---
 src/amd/vulkan/radv_device.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/amd/vulkan/radv_device.c b/src/amd/vulkan/radv_device.c
index cc88abb57a8..79dbbd886d5 100644
--- a/src/amd/vulkan/radv_device.c
+++ b/src/amd/vulkan/radv_device.c
@@ -58,11 +58,11 @@ radv_device_get_cache_uuid(enum radeon_family family, void *uuid)
 		return -1;
 
 	memcpy(uuid, &mesa_timestamp, 4);
 	memcpy((char*)uuid + 4, &llvm_timestamp, 4);
 	memcpy((char*)uuid + 8, &f, 2);
-	snprintf((char*)uuid + 10, VK_UUID_SIZE - 10, "radv");
+	snprintf((char*)uuid + 10, VK_UUID_SIZE - 10, "radv%zd", sizeof(void *));
 	return 0;
 }
 
 static void
 radv_get_driver_uuid(void *uuid)
-- 
2.17.1