From: Dave Airlie <airlied@redhat.com>
Date: Fri, 27 Jul 2018 04:18:02 +0000 (+0100)
Subject: radv: return binary code_size not variant code size to cache
X-Git-Tag: upstream/19.0.0~3549
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b88468f15c01f129eec9f9e0ec0ff7b65d650aa2;p=platform%2Fupstream%2Fmesa.git

radv: return binary code_size not variant code size to cache

The code sizes return here get passed to the cache shader insert function,
which then memcpy from the code ptr, and causes all sorts of valgrind
errors like:
==6755== Invalid read of size 8
==6755==    at 0x4C32FEE: memcpy@GLIBC_2.2.5 (vg_replace_strmem.c:1021)
==6755==    by 0x2305D4C7: radv_pipeline_cache_insert_shaders (radv_pipeline_cache.c:416)
==6755==    by 0x2305791D: radv_create_shaders (radv_pipeline.c:2158)
==6755==    by 0x2305C523: radv_pipeline_init (radv_pipeline.c:3404)
==6755==    by 0x2305C890: radv_graphics_pipeline_create (radv_pipeline.c:3515)
==6755==    by 0x230188AB: radv_device_init_meta_blit_color (radv_meta_blit.c:871)
==6755==    by 0x2301D50E: radv_device_init_meta_blit_state (radv_meta_blit.c:1278)
==6755==    by 0x23011893: radv_device_init_meta (radv_meta.c:352)
==6755==    by 0x2300744B: radv_CreateDevice (radv_device.c:1576)
==6755==    by 0x5187D0F: ??? (in /usr/lib64/libvulkan.so.1.1.77)
==6755==    by 0x518F6A3: ??? (in /usr/lib64/libvulkan.so.1.1.77)
==6755==    by 0x5192A42: vkCreateDevice (in /usr/lib64/libvulkan.so.1.1.77)
==6755==  Address 0x22a58548 is 4 bytes after a block of size 116 alloc'd
==6755==    at 0x4C2EBAB: malloc (vg_replace_malloc.c:299)
==6755==    by 0x23089DC4: ac_elf_read (ac_binary.c:144)
==6755==    by 0x23090A60: ac_compile_module_to_binary (ac_llvm_helper.cpp:162)
==6755==    by 0x23053F06: compile_to_memory_buffer (radv_llvm_helper.cpp:58)
==6755==    by 0x23053F06: radv_compile_to_binary (radv_llvm_helper.cpp:98)
==6755==    by 0x23052769: ac_llvm_compile (radv_nir_to_llvm.c:3394)
==6755==    by 0x23052823: ac_compile_llvm_module (radv_nir_to_llvm.c:3418)
==6755==    by 0x23053C05: radv_compile_nir_shader (radv_nir_to_llvm.c:3542)
==6755==    by 0x23061B4E: shader_variant_create (radv_shader.c:580)
==6755==    by 0x23061CFD: radv_shader_variant_create (radv_shader.c:634)
==6755==    by 0x23057765: radv_create_shaders (radv_pipeline.c:2123)
==6755==    by 0x2305C523: radv_pipeline_init (radv_pipeline.c:3404)
==6755==    by 0x2305C890: radv_graphics_pipeline_create (radv_pipeline.c:3515)

Since we are just inserting the code into the cache, we can avoid these
bad reads and data in the cache by just using the binary code size here.

Fixes: 939e5a382 (radv: add padding for the UMR disassembler)
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
---

diff --git a/src/amd/vulkan/radv_shader.c b/src/amd/vulkan/radv_shader.c
index 634e35e..7d4265c 100644
--- a/src/amd/vulkan/radv_shader.c
+++ b/src/amd/vulkan/radv_shader.c
@@ -588,7 +588,7 @@ shader_variant_create(struct radv_device *device,
 
 	if (code_out) {
 		*code_out = binary.code;
-		*code_size_out = variant->code_size;
+		*code_size_out = binary.code_size;
 	} else
 		free(binary.code);
 	free(binary.config);