From: Marek Olšák <marek.olsak@amd.com>
Date: Thu, 19 Mar 2015 11:14:08 +0000 (+0100)
Subject: gallium/radeon: don't crash when getting out-of-bounds TEMP references
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ecc7f2ed910345c4dd0d02ac9c72d69f10ac5572;p=mesa.git

gallium/radeon: don't crash when getting out-of-bounds TEMP references

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
---

diff --git a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
index 18afbcb0a2e..20e506b7c5e 100644
--- a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
+++ b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
@@ -191,6 +191,8 @@ emit_fetch(
 		break;
 
 	case TGSI_FILE_TEMPORARY:
+		if (reg->Register.Index >= ctx->temps_count)
+			return LLVMGetUndef(tgsi2llvmtype(bld_base, type));
 		if (uses_temp_indirect_addressing(bld_base)) {
 			ptr = lp_get_temp_ptr_soa(bld, reg->Register.Index, swizzle);
 			break;
@@ -395,6 +397,8 @@ emit_store(
 					break;
 
 				case TGSI_FILE_TEMPORARY:
+					if (range.First + i >= ctx->temps_count)
+						continue;
 					if (uses_temp_indirect_addressing(bld_base))
 						temp_ptr = lp_get_temp_ptr_soa(bld, i + range.First, chan_index);
 					else
@@ -416,6 +420,8 @@ emit_store(
 				break;
 
 			case TGSI_FILE_TEMPORARY:
+				if (reg->Register.Index >= ctx->temps_count)
+					continue;
 				if (uses_temp_indirect_addressing(bld_base)) {
 					temp_ptr = NULL;
 					break;