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File _service:tar_scm:ps2-fix-oob-in-ps2-kbd.patch of Package qemu
From 0a54d68547df3f276dc242b52d54e8549d0a84a0 Mon Sep 17 00:00:00 2001 From: Chuan Zheng <zhengchuan@huawei.com> Date: Wed, 9 Feb 2022 11:21:28 +0800 Subject: [PATCH] ps2: fix oob in ps2 kbd fix oob in ps2 kbd --- hw/input/ps2.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/input/ps2.c b/hw/input/ps2.c index c8fd23cf36..b647561069 100644 --- a/hw/input/ps2.c +++ b/hw/input/ps2.c @@ -167,7 +167,7 @@ void ps2_queue_noirq(PS2State *s, int b) } q->data[q->wptr] = b; - if (++q->wptr == PS2_BUFFER_SIZE) { + if (++q->wptr >= PS2_BUFFER_SIZE) { q->wptr = 0; } q->count++; @@ -557,7 +557,7 @@ uint32_t ps2_read_data(PS2State *s) val = q->data[index]; } else { val = q->data[q->rptr]; - if (++q->rptr == PS2_BUFFER_SIZE) { + if (++q->rptr >= PS2_BUFFER_SIZE) { q->rptr = 0; } q->count--; -- 2.27.0
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