Am 06.09.2016 um 16:26 hat Daniel P. Berrange geschrieben:
> Broken in previous commit:
>
> commit aaa4d20b4972bb1a811ce929502e6741835d584e
> Author: Kevin Wolf <kw...@redhat.com>
> Date: Wed Jun 1 15:21:05 2016 +0200
>
> qcow2: Make copy_sectors() byte based
>
> The copy_sectors() code was originally using the 'sector'
> parameter for encryption, which was passed in by the caller
> from the QCowL2Meta.offset field (aka the guest logical
> offset).
>
> After the change, the code is using 'cluster_offset' which
> was passed in from QCow2L2Meta.alloc_offset field (aka the
> host physical offset).
>
> This would cause the data to be encrypted using an incorrect
> initialization vector which will in turn cause later reads
> to return garbage.
>
> Although current qcow2 built-in encryption is blocked from
> usage in the emulator, one could still hit this if writing
> to the file via qemu-{img,io,nbd} commands.
>
> Signed-off-by: Daniel P. Berrange <berra...@redhat.com>
Cc: qemu-sta...@nongnu.org
Oops, thanks. Applied to the block branch.
Kevin
