From e2e9dd4f215307f8fc275c3fdd258d54eb62f43a Mon Sep 17 00:00:00 2001
From: Danylo Piliaiev <dpiliaiev@igalia.com>
Date: Tue, 15 Oct 2024 15:17:14 +0200
Subject: [PATCH] freedreno/rnndec: Consider array length when finding by reg
 name

Otherwise we get a valid reg base for reg array with OOB index.

Signed-off-by: Danylo Piliaiev <dpiliaiev@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31632>
---
 src/freedreno/rnn/rnndec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/freedreno/rnn/rnndec.c b/src/freedreno/rnn/rnndec.c
index 33b6b495739..b08dc805bab 100644
--- a/src/freedreno/rnn/rnndec.c
+++ b/src/freedreno/rnn/rnndec.c
@@ -514,6 +514,8 @@ static unsigned tryreg(struct rnndeccontext *ctx, struct rnndelem **elems, int e
 					assert(suffix);
 					ret = tryreg(ctx, elem->subelems, elem->subelemsnum, dwidth, child, offset);
 					if (ret) {
+						if (idx >= elem->length)
+							return 0;
 						*offset += elem->offset + (idx * elem->stride);
 						return 1;
 					}