Re: [PATCH v3] block: Raise an error when backing file parameter is an empty string

[Kevin Wolf]

Am 13.08.2020 um 15:47 hat Connor Kuehl geschrieben:
> Providing an empty string for the backing file parameter like so:
> 
>       qemu-img create -f qcow2 -b '' /tmp/foo
> 
> allows the flow of control to reach and subsequently fail an assert
> statement because passing an empty string to
> 
>       bdrv_get_full_backing_filename_from_filename()
> 
> simply results in NULL being returned without an error being raised.
> 
> To fix this, let's check for an empty string when getting the value from
> the opts list.
> 
> Reported-by: Attila Fazekas <afazekas@redhat.com>
> Fixes: https://bugzilla.redhat.com/1809553
> Signed-off-by: Connor Kuehl <ckuehl@redhat.com>

Thanks, applied to the block branch.

Kevin