[libvirt] [PATCH] Avoid segv if ncf_init fails

[Daniel P. Berrange]

On Fri, Oct 23, 2009 at 03:13:17PM -0400, Laine Stump wrote:
> If ncf_init() fails, it takes responsibility to call ncf_close() when
> appropriate. Having libvirt call it results in a double close, which
> ends up segv'ing.

Hmm, it would be good if ncf_init  set the passed in pointer to NULL
when it failed, then your existing cleanup check would have been
safe.

> ---
>  src/interface/netcf_driver.c |    4 ----
>  1 files changed, 0 insertions(+), 4 deletions(-)
> 
> diff --git a/src/interface/netcf_driver.c b/src/interface/netcf_driver.c
> index b5c3664..c44ba62 100644
> --- a/src/interface/netcf_driver.c
> +++ b/src/interface/netcf_driver.c
> @@ -142,10 +142,6 @@ static virDrvOpenStatus interfaceOpenInterface(virConnectPtr conn,
>      return 0;
>  
>  netcf_error:
> -    if (driverState->netcf)
> -    {
> -        ncf_close(driverState->netcf);
> -    }
>      virMutexDestroy (&driverState->lock);
>  mutex_error:
>      VIR_FREE(driverState);
> -- 

ACK


Daniel
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