Re: [Qemu-devel] [PATCH v10 5/6] s390x/vfio: ap: Introduce VFIO AP device

[Christian Borntraeger]

On 10/10/2018 02:37 PM, Pierre Morel wrote:
> On 09/10/2018 19:52, Tony Krowiak wrote:

>> +static VFIOGroup *vfio_ap_get_group(VFIOAPDevice *vapdev, Error **errp)
>> +{
>> +    GError *gerror;
>> +    char *symlink, *group_path;
>> +    int groupid;
>> +
>> +    symlink = g_strdup_printf("%s/iommu_group", vapdev->vdev.sysfsdev);
>> +    group_path = g_file_read_link(symlink, &gerror);
> 
> 
> hum I oversaw this change, it leads to segfault.

Yes, this was a review feedback from v9 to use the glib function.
> 
> You must initialize gerror before use.
> The following patch avoid a segmentation fault:
> 
> 
> diff --git a/hw/vfio/ap.c b/hw/vfio/ap.c
> index 5543406afc..3b8e9ba6dc 100644
> --- a/hw/vfio/ap.c
> +++ b/hw/vfio/ap.c
> @@ -59,7 +59,7 @@ static void vfio_ap_put_device(VFIOAPDevice *vapdev)
> 
>  static VFIOGroup *vfio_ap_get_group(VFIOAPDevice *vapdev, Error **errp)
>  {
> -    GError *gerror;
> +    GError *gerror = NULL;
>      char *symlink, *group_path;
>      int groupid;

With that fix, series
Tested-by: Christian Borntraeger <address@hidden>

Tony, can you fold that fixup from Pierre into your v11?