Hi Tobias, 2017-05-15, 13:08:19 +0200, Tobias Jungel wrote: > Currently it is allowed to set the default pvid of a bridge to a value > above VLAN_VID_MASK (0xfff). This patch checks the passed pvid and > disables the pvid in case it is out of bounds.
Could we return an error (-EINVAL) to userspace instead? Silently disabling the feature seems confusing to me. This would probably be better in br_validate() (like the IFLA_BR_VLAN_PROTOCOL check), since there's already such a check when setting default_pvid from sysfs (in br_vlan_set_default_pvid()). > > Reproduce by calling: > > [root@test ~]# ip l a type bridge > [root@test ~]# ip l a type dummy > [root@test ~]# ip l s bridge0 type bridge vlan_filtering 1 > [root@test ~]# ip l s bridge0 type bridge vlan_default_pvid 9999 > [root@test ~]# ip l s dummy0 master bridge0 > [root@test ~]# bridge vlan > port vlan ids > bridge0 9999 PVID Egress Untagged > > dummy0 9999 PVID Egress Untagged You'll also need to add a Signed-off-by, and a Fixes tag would be nice. Thanks, -- Sabrina
