qemu/hw/hyperv
Roman Kagan 30a759b61a hw/hyperv: fix NULL dereference with pure-kvm SynIC
When started in compat configuration of SynIC, e.g.

qemu-system-x86_64 -machine pc-i440fx-2.10,accel=kvm \
 -cpu host,-vmx,hv-relaxed,hv_spinlocks=0x1fff,hv-vpindex,hv-synic

or explicitly

qemu-system-x86_64 -enable-kvm -cpu host,hv-synic,x-hv-synic-kvm-only=on

QEMU crashes in hyperv_synic_reset() trying to access the non-present
qobject for SynIC.

Add the missing check for NULL.

Reported-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reported-by: Igor Mammedov <imammedo@redhat.com>
Fixes: 9b4cf107b0
Fixes: 4a93722f9c
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20181126152836.25379-1-rkagan@virtuozzo.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-11-26 14:14:38 -02:00
..
Makefile.objs hyperv: factor out arch-independent API into hw/hyperv 2018-10-19 13:44:13 +02:00
hyperv.c hw/hyperv: fix NULL dereference with pure-kvm SynIC 2018-11-26 14:14:38 -02:00
hyperv_testdev.c hyperv_testdev: add SynIC message and event testmodes 2018-10-19 13:44:14 +02:00