From 1105f7b98fafef32d785159d2f0f909e857ba81a Mon Sep 17 00:00:00 2001
From: Rhys Perry <pendingchaos02@gmail.com>
Date: Thu, 28 Aug 2025 10:39:35 +0100
Subject: [PATCH] aco: fix signed integer overflow

Fix UBSan error:
runtime error: signed integer overflow: 2147483647 + 32 cannot be represented in type 'int'

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37055>
---
 src/amd/compiler/aco_scheduler.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/amd/compiler/aco_scheduler.cpp b/src/amd/compiler/aco_scheduler.cpp
index 9cdfd05d364..c25fa74b8bc 100644
--- a/src/amd/compiler/aco_scheduler.cpp
+++ b/src/amd/compiler/aco_scheduler.cpp
@@ -1207,7 +1207,7 @@ void
 schedule_block(sched_ctx& ctx, Program* program, Block* block)
 {
    ctx.last_SMEM_dep_idx = 0;
-   ctx.last_VMEM_store_idx = INT_MAX;
+   ctx.last_VMEM_store_idx = INT_MIN;
    ctx.last_SMEM_stall = INT16_MIN;
    ctx.mv.block = block;