[libvirt] [PATCH] [PATCH] rpc: fix keep alive timer segfault
Michal Privoznik
mprivozn at redhat.com
Mon Apr 24 09:15:31 UTC 2017
On 04/24/2017 05:31 AM, wang.yi59 at zte.com.cn wrote:
> Hi Michal,
>
>
>
> Thanks for your review. The problem occured in a python applicatin using libvirt-python, which has no ref(). If we unref() first in virKeepAliveTimer, we may get a segfault in virObjectUnlock() when cleanup, so I suppose that my patch is safer, :-) Here is the backtrace:
>
>
Okay, now it makes more sense. However, the ref() I was referring to is
our libvirt virObjectRef() not the one in python. The code where
segfault occurs is too deep for python to see anyway. One thing that I
am still worried about is doing virObjectRef() before virObjectLock(). I
think these two steps should be swapped.
Can you check please whether that also fix your problem when you switch
those two lines?
Michal
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