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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
This commit is contained in:
Heyi Guo 2020-04-22 20:00:00 +08:00
parent 986f8330ec
commit 0b1838a970
1 changed files with 2 additions and 2 deletions
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4
lib/extensions/ras/ras_common.c
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@ -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 @@ static int ras_interrupt_handler(uint32_t intr_raw, uint32_t flags,
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) {