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Re: [Qemu-devel] [PATCH] lsi53c895a: check script ram address value


From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH] lsi53c895a: check script ram address value
Date: Tue, 6 Nov 2018 12:37:34 +0000

On 6 November 2018 at 12:27, li qiang <address@hidden> wrote:
> The addr is 0~0x1fff, but when addr is at the near the end ,for example
> 0x1fffe, the add>>2 can be 2047
>
> and as script_ram is a uint32_t and so s->script_ram[addr >> 2] can read
> out of the script_ram.

But script_ram is declared as
  uint32_t script_ram[2048];
so if addr >> 2 == 2047, that's still in-bounds, isn't it?

thanks
-- PMM



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