diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2012-11-23 16:56:18 +0100 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2012-11-26 09:38:54 -0600 |
| commit | b5007bcc9729acd995518c52eb1038c4d8416b5d (patch) | |
| tree | d6aa11685de65cf05b087d403aea757b3ade9ff3 | |
| parent | b7f43fe46029d8fd0594cd599fa2599dcce0f553 (diff) | |
| download | qemu-b5007bcc9729acd995518c52eb1038c4d8416b5d.tar.gz | |
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>
| -rw-r--r-- | hw/pci-hotplug.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/hw/pci-hotplug.c b/hw/pci-hotplug.c index e7fb780a08..0ca5546fc6 100644 --- a/hw/pci-hotplug.c +++ b/hw/pci-hotplug.c @@ -80,7 +80,13 @@ static int scsi_hot_add(Monitor *mon, DeviceState *adapter, SCSIBus *scsibus; SCSIDevice *scsidev; - scsibus = SCSI_BUS(QLIST_FIRST(&adapter->child_bus)); + scsibus = (SCSIBus *) + object_dynamic_cast(OBJECT(QLIST_FIRST(&adapter->child_bus)), + TYPE_SCSI_BUS); + if (!scsibus) { + error_report("Device is not a SCSI adapter"); + return -1; + } /* * drive_init() tries to find a default for dinfo->unit. Doesn't |