Re: [Qemu-devel] [PATCH for 2.11 0/2] QEMU crashes with CD device without media

[John Snow]

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 <address@hidden>
> CC: "Dr. David Alan Gilbert" <address@hidden>
> CC: John Snow <address@hidden>
> CC: Kevin Wolf <address@hidden>
> CC: Stefan Hajnoczi <address@hidden>
> 
> 

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.