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Re: [Qemu-devel] [PATCH 1/2] block/vhdx: check error return of bdrv_getl


From: Eric Blake
Subject: Re: [Qemu-devel] [PATCH 1/2] block/vhdx: check error return of bdrv_getlength()
Date: Mon, 7 Aug 2017 06:25:24 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1

On 08/06/2017 10:08 PM, Jeff Cody wrote:
> Calls to bdrv_getlength() were not checking for error.  In vhdx.c, this
> can lead to truncating an image file, so it is a definite bug.  In
> vhdx-log.c, the path for improper behavior is less clear, but it is best
> to check in any case.
> 
> Reported-by: Markus Armbruster <address@hidden>
> Signed-off-by: Jeff Cody <address@hidden>
> ---
>  block/vhdx-log.c | 20 ++++++++++++++++----
>  block/vhdx.c     |  9 ++++++++-
>  2 files changed, 24 insertions(+), 5 deletions(-)

Reviewed-by: Eric Blake <address@hidden>

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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