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Re: [Qemu-devel] [PATCH] lsi53c895a: check script ram address value
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From: |
Paolo Bonzini |
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Subject: |
Re: [Qemu-devel] [PATCH] lsi53c895a: check script ram address value |
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Date: |
Tue, 6 Nov 2018 13:28:48 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.0 |
On 06/11/2018 13:27, li qiang 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.
How so? s->script_ram has size 2048, it's okay to access it at 2047.
Paolo