vhost-vdpa: set v->config_ctx to NULL if eventfd_ctx_fdget() fails
In vhost_vdpa_set_config_call() if eventfd_ctx_fdget() fails the 'v->config_ctx' contains an error instead of a valid pointer. Since we consider 'v->config_ctx' valid if it is not NULL, we should set it to NULL in this case to avoid to use an invalid pointer in other functions such as vhost_vdpa_config_put(). Fixes: 776f3950 ("vhost_vdpa: Support config interrupt in vdpa") Cc: lingshan.zhu@intel.com Cc: stable@vger.kernel.org Signed-off-by:Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/r/20210311135257.109460-3-sgarzare@redhat.com Signed-off-by:
Michael S. Tsirkin <mst@redhat.com> Acked-by:
Jason Wang <jasowang@redhat.com>
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