On 11/28/2017 07:10 AM, Denis V. Lunev wrote:
> There are 2 cases I have spotted so far:
> 1) IDE ATAPI read processing. Actually this was reported from field
> 2) QEMU IO hmp command (found during evaluation of (1))
> SCSI code checks during access that blk_is_available(). These patches add
> same checks on different code paths.
> Pls decide whether these patches should go through sub-system trees or via
> block tree.
> Signed-off-by: Denis V. Lunev <d...@openvz.org>
> CC: "Dr. David Alan Gilbert" <dgilb...@redhat.com>
> CC: John Snow <js...@redhat.com>
> CC: Kevin Wolf <kw...@redhat.com>
> CC: Stefan Hajnoczi <stefa...@redhat.com>

Denis, I was never able to figure this out, but Stefan added a more
rigorous block-wide fix that should prevent these crashes. If you see
any anomalies in the ATAPI device again please let me know.

Sorry I wasn't able to help any faster.

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