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Re: [Qemu-devel] [PATCH] net: rocker: set limit to DMA buffer size


From: Jiri Pirko
Subject: Re: [Qemu-devel] [PATCH] net: rocker: set limit to DMA buffer size
Date: Wed, 12 Oct 2016 11:52:59 +0200
User-agent: Mutt/1.7.0 (2016-08-17)

Wed, Oct 12, 2016 at 11:10:55AM CEST, address@hidden wrote:
>From: Prasad J Pandit <address@hidden>
>
>Rocker network switch emulator has test registers to help debug
>DMA operations. While testing host DMA access, a buffer address
>is written to register 'TEST_DMA_ADDR' and its size is written to
>register 'TEST_DMA_SIZE'. When performing TEST_DMA_CTRL_INVERT
>test, if DMA buffer size was greater than 'INT_MAX', it leads to
>an invalid buffer access. Limit the DMA buffer size to avoid it.
>
>Reported-by: Huawei PSIRT <address@hidden>
>Signed-off-by: Prasad J Pandit <address@hidden>

Reviewed-by: Jiri Pirko <address@hidden>



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