net/tls: don't ignore netdev notifications if no TLS features
authorJakub Kicinski <jakub.kicinski@netronome.com>
Wed, 22 May 2019 02:02:02 +0000 (19:02 -0700)
committerDavid S. Miller <davem@davemloft.net>
Wed, 22 May 2019 19:21:44 +0000 (12:21 -0700)
commitc3f4a6c39cf269a40d45f813c05fa830318ad875
tree752d5cfd6c2b21e9b7e5e2f3b035940db70e4086
parent3686637e507b48525fcea6fb91e1988bdbc14530
net/tls: don't ignore netdev notifications if no TLS features

On device surprise removal path (the notifier) we can't
bail just because the features are disabled.  They may
have been enabled during the lifetime of the device.
This bug leads to leaking netdev references and
use-after-frees if there are active connections while
device features are cleared.

Fixes: e8f69799810c ("net/tls: Add generic NIC offload infrastructure")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/tls/tls_device.c