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Re: [Qemu-block] [PATCH 2/2] block/vhdx: check for offset overflow to bd
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From: |
Kevin Wolf |
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Subject: |
Re: [Qemu-block] [PATCH 2/2] block/vhdx: check for offset overflow to bdrv_truncate() |
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Date: |
Mon, 7 Aug 2017 12:48:31 +0200 |
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User-agent: |
Mutt/1.8.3 (2017-05-23) |
Am 07.08.2017 um 05:08 hat Jeff Cody geschrieben:
> VHDX uses uint64_t types for most offsets, following the VHDX spec.
> However, bdrv_truncate() takes an int64_t value for the truncating
> offset. Check for overflow before calling bdrv_truncate().
>
> N.B.: For a compliant image this is not an issue, as the maximum VHDX
> image size is defined per the spec to be 64TB.
>
> Signed-off-by: Jeff Cody <address@hidden>
Reviewed-by: Kevin Wolf <address@hidden>