Re: [libvirt] [PATCH] Fix crash in nwfilter driver check

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libvir-list-bounces@xxxxxxxxxx wrote on 04/19/2010 09:18:15 AM:

>
> * src/nwfilter/nwfilter_driver.c: Fix locking & NULL checks
>   in nwfilterDriverActive()
> ---
>  src/nwfilter/nwfilter_driver.c |   11 +++++++++--
>  1 files changed, 9 insertions(+), 2 deletions(-)
>
> diff --git a/src/nwfilter/nwfilter_driver.c b/src/nwfilter/nwfilter_driver.c
> index 58df4e1..412c5b8 100644
> --- a/src/nwfilter/nwfilter_driver.c
> +++ b/src/nwfilter/nwfilter_driver.c
> @@ -153,9 +153,16 @@ nwfilterDriverReload(void) {
>   */
>  static int
>  nwfilterDriverActive(void) {
> -    if (!driverState->pools.count)
> +    int ret;
> +
> +    if (!driverState)
>          return 0;
> -    return 1;
> +
> +    nwfilterDriverLock(driverState);
> +    ret = driverState->pools.count ? 1 : 0;
> +    nwfilterDriverUnlock(driverState);
> +
> +    return ret;
>  }
>  


ACK.

  Stefan
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