[libvirt] [PATCH] Fix possible infinite loop in remote driver

[Eric Blake]

On 04/12/2011 09:12 AM, Daniel P. Berrange wrote:
> On Tue, Apr 12, 2011 at 04:58:48PM +0200, Michal Privoznik wrote:
>> When we take out completed calls from queue we might end up
>> in circular pointer. We don't want pointer to previous item
>> point to element taken out.
>> ---
>>  src/remote/remote_driver.c |    3 ++-
>>  1 files changed, 2 insertions(+), 1 deletions(-)
>>
>> diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c
>> index 9310ddf..ec10010 100644
>> --- a/src/remote/remote_driver.c
>> +++ b/src/remote/remote_driver.c
>> @@ -10672,8 +10672,9 @@ remoteIOEventLoop(virConnectPtr conn,
>>                   */
>>                  VIR_DEBUG("Waking up sleep %d %p %p", tmp->proc_nr, tmp, priv->waitDispatch);
>>                  virCondSignal(&tmp->cond);
>> +            } else {
>> +                prev = tmp;
>>              }
>> -            prev = tmp;
>>              tmp = tmp->next;
>>          }
> 
> ACK
> 
> The diff context doesn't really show enough, but this is correct fix
> for the logic flaw

I've pushed this.

-- 
Eric Blake   eblake at redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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