Re: [Qemu-devel] [PATCH 1.1 1/2] kvm/apic: correct short memset

[Jan Kiszka <jan.kiszka@siemens.com>]

On 2012-06-10 22:29, Stefan Weil wrote:
> Am 23.05.2012 12:33, schrieb Jan Kiszka:
>> On 2012-05-22 17:30, Stefan Weil wrote:
>>> Am 10.05.2012 19:28, schrieb Jan Kiszka:
>>>> On 2012-05-10 13:19, Jim Meyering wrote:
>>>>
>>>>> From: Jim Meyering<meyering@redhat.com>
>>>>>
>>>>> kvm_put_apic_state's attempt to clear *kapic before setting its
>>>>> bits cleared sizeof(void*) bytes (no more than 8) rather than the
>>>>> intended 1024 (KVM_APIC_REG_SIZE) bytes. Spotted by coverity.
>>>>>
>>>>> Signed-off-by: Jim Meyering<meyering@redhat.com>
>>>>> ---
>>>>>    hw/kvm/apic.c | 2 +-
>>>>>    1 file changed, 1 insertion(+), 1 deletion(-)
>>>>>
>>>>> diff --git a/hw/kvm/apic.c b/hw/kvm/apic.c
>>>>> index ffe7a52..a0ab503 100644
>>>>> --- a/hw/kvm/apic.c
>>>>> +++ b/hw/kvm/apic.c
>>>>> @@ -29,7 +29,7 @@ void kvm_put_apic_state(DeviceState *d, struct kvm_lapic_state *kapic)
>>>>>        APICCommonState *s = DO_UPCAST(APICCommonState, busdev.qdev, d);
>>>>>        int i;
>>>>>
>>>>> -    memset(kapic, 0, sizeof(kapic));
>>>>> +    memset(kapic, 0, sizeof(*kapic));
>>>>>        kvm_apic_set_reg(kapic, 0x2, s->id<<   24);
>>>>>        kvm_apic_set_reg(kapic, 0x8, s->tpr);
>>>>>        kvm_apic_set_reg(kapic, 0xd, s->log_dest<<   24);
>>>>>
>>>> Yep, that's what I actually meant...
>>>>
>>>> Thanks,
>>>> Jan
>>>>
>>>>
>>>
>>> Reviewed-by: Stefan Weil<sw@weilnetz.de>
>>>
>>> Hello Anthony,
>>>
>>> this patch should be committed to QEMU 1.1.
>>> I had sent a patch with the same fix 6 days later.
>>
>> Thanks for reminding. Yes, please merge!
>>
>> Jan
> 
> 
> Ping?
> 
> This is one of the bug fixes which is missing in QEMU 1.1,
> and it is also missing in latest QEMU git master.
> 
> What can be done to get it committed?

Avi or Marcelo, please queue in uq/master and send a pull soon!

That reminds me that [1] is still awaiting comments (and further
testing). Critical for qemu-kvm 1.1 and qemu 1.1.1 as well.

Jan

[1] http://thread.gmane.org/gmane.comp.emulators.kvm.devel/92036

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