tree d6aa11685de65cf05b087d403aea757b3ade9ff3
parent b7f43fe46029d8fd0594cd599fa2599dcce0f553
author Paolo Bonzini <pbonzini@redhat.com> 1353686178 +0100
committer Anthony Liguori <aliguori@us.ibm.com> 1353944334 -0600

hmp: do not crash on invalid SCSI hotplug

Commit 0d93692 (qdev: Convert busses to QEMU Object Model, 2012-05-02)
removed a check on the type of the bus where a SCSI disk is hotplugged.
However, hot-plugging to the wrong kind of device now causes a crash
due to either a NULL pointer dereference (avoided by the previous patch)
or a failed QOM cast.

Instead, in this case we need to use object_dynamic_cast and check for
the result, similar to what was done before that commit.

Reported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>