Re: [PATCH] qemu: cgroup: Fix crash if starting nographics guest

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On 10/01/2013 08:07 AM, Eric Blake wrote:
> On 10/01/2013 05:56 AM, Cole Robinson wrote:
>> We can dereference graphics[0] even if guest has no graphics device
>> configured. I screwed this up in a216e6487255d3b65d97c7ec1fa5da63dbced902
>> ---
>>  src/qemu/qemu_cgroup.c | 5 +++--
>>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> ACK.
> 
>>
>> diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
>> index f95c7f2..ace7e35 100644
>> --- a/src/qemu/qemu_cgroup.c
>> +++ b/src/qemu/qemu_cgroup.c
>> @@ -490,9 +490,10 @@ qemuSetupDevicesCgroup(virQEMUDriverPtr driver,
>>  
>>      if (vm->def->nsounds &&
>>          ((!vm->def->ngraphics && cfg->nogfxAllowHostAudio) ||
>> -         ((vm->def->graphics[0]->type == VIR_DOMAIN_GRAPHICS_TYPE_VNC &&
>> +         (vm->def->graphics &&
>> +          ((vm->def->graphics[0]->type == VIR_DOMAIN_GRAPHICS_TYPE_VNC &&
>>             cfg->vncAllowHostAudio) ||
>> -           (vm->def->graphics[0]->type == VIR_DOMAIN_GRAPHICS_TYPE_SDL)))) {
>> +           (vm->def->graphics[0]->type == VIR_DOMAIN_GRAPHICS_TYPE_SDL))))) {
>>          rv = virCgroupAllowDeviceMajor(priv->cgroup, 'c', DEVICE_SND_MAJOR,
>>                                         VIR_CGROUP_DEVICE_RW);
>>          virDomainAuditCgroupMajor(vm, priv->cgroup, "allow", DEVICE_SND_MAJOR,
>>
> 

Thanks, pushed now.

- Cole

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