From 7297f931f04bedb2a49a723972e5de8daad7b487 Mon Sep 17 00:00:00 2001
From: Erico Nunes <nunes.erico@gmail.com>
Date: Wed, 2 Feb 2022 12:30:56 +0100
Subject: [PATCH] lima/ppir: initialize slots array for dummy/undef

Some functions in ppir iterate the ppir_op_info slots arrays looking
for the PPIR_INSTR_SLOT_END token. The dummy/undef internal ops may
appear in the scheduling code and their slots arrays did not contain
that token, which could result in invalid array reads.
Reported by gcc -fsanitize=address.

Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com>
Cc: 22.0 <mesa-stable>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14894>
---
 src/gallium/drivers/lima/ir/pp/node.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/gallium/drivers/lima/ir/pp/node.c b/src/gallium/drivers/lima/ir/pp/node.c
index 8948208b220..7465e4e8b44 100644
--- a/src/gallium/drivers/lima/ir/pp/node.c
+++ b/src/gallium/drivers/lima/ir/pp/node.c
@@ -333,12 +333,14 @@ const ppir_op_info ppir_op_infos[] = {
       .name = "undef",
       .type = ppir_node_type_alu,
       .slots = (int []) {
+         PPIR_INSTR_SLOT_END
       },
    },
    [ppir_op_dummy] = {
       .name = "dummy",
       .type = ppir_node_type_alu,
       .slots = (int []) {
+         PPIR_INSTR_SLOT_END
       },
    },
 };