Hi,
On Wed, 2018-06-20 at 11:06 -0700, Cong Wang wrote:
> On Wed, Jun 20, 2018 at 10:34 AM, Paolo Abeni wrote:
> >
> > +static void fl_mask_free(struct fl_flow_mask *mask)
> > +{
> > + rhashtable_destroy(&mask->ht);
>
> I don't believe you can call rhashtable_destroy() in BH
> context, it
On Wed, Jun 20, 2018 at 10:34 AM, Paolo Abeni wrote:
>
> +static void fl_mask_free(struct fl_flow_mask *mask)
> +{
> + rhashtable_destroy(&mask->ht);
I don't believe you can call rhashtable_destroy() in BH
context, it acquires a mutex...
If flower filter is created without the skip_sw flag, fl_mask_put()
can race with fl_classify() and we can destroy the mask rhashtable
while a lookup operation is accessing it.
BUG: unable to handle kernel paging request at 000911d1
PGD 0 P4D 0
SMP PTI
CPU: 3 PID: 5582 Comm: vhost-5541
