lib/extensions/ras: fix bug of binary search
In ras_interrupt_handler(), binary search end was set to the size of
the ras_interrupt_mappings array, which would cause out of bound
access when the input intr_raw is larger than all the elements in
ras_interrupt_mappings.
Signed-off-by: Heyi Guo <guoheyi@linux.alibaba.com>
Change-Id: Id2cff73177134b09d4d8beb596c3429b98ec5066
diff --git a/lib/extensions/ras/ras_common.c b/lib/extensions/ras/ras_common.c
index 36f9a95..622879e 100644
--- a/lib/extensions/ras/ras_common.c
+++ b/lib/extensions/ras/ras_common.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2018-2021, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2020, NVIDIA Corporation. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
@@ -139,7 +139,7 @@
assert(ras_interrupt_mappings.num_intrs > 0UL);
start = 0;
- end = (int) ras_interrupt_mappings.num_intrs;
+ end = (int)ras_interrupt_mappings.num_intrs - 1;
while (start <= end) {
mid = ((end + start) / 2);
if (intr_raw == ras_inrs[mid].intr_number) {