ps2: check PS2Queue wptr pointer in post_load routine
In commit 802cbcb7, most issues have been fixed when qemu guest migration. But the queue size still need to check whether is equal to PS2_QUEUE_SIZE. If yes, the wptr should set as 0. Or, wptr would larger than PS2_QUEUE_SIZE and never come back when ps2_queue_noirq is called. This could lead to OOB access, add check to avoid it. Signed-off-by: Nliujunjie <liujunjie23@huawei.com> Reviewed-by: NGonglei <arei.gonglei@huawei.com> Message-id: 20180607080237.12360-1-liujunjie23@huawei.com Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
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