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| author | Mahesh Bandewar <maheshb@google.com> | 2022-11-16 02:19:14 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-11-18 11:39:22 +0100 |
| commit | 40b9d1ab63f5c4f3cb69450044d07b45e5af72e1 (patch) | |
| tree | 773c981b4357becfd3258719c1138e268508839a /drivers/net/ipvlan/ipvlan.h | |
| parent | net: neigh: decrement the family specific qlen (diff) | |
| download | linux-40b9d1ab63f5c4f3cb69450044d07b45e5af72e1.tar.xz linux-40b9d1ab63f5c4f3cb69450044d07b45e5af72e1.zip | |
ipvlan: hold lower dev to avoid possible use-after-free
Recently syzkaller discovered the issue of disappearing lower
device (NETDEV_UNREGISTER) while the virtual device (like
macvlan) is still having it as a lower device. So it's just
a matter of time similar discovery will be made for IPvlan
device setup. So fixing it preemptively. Also while at it,
add a refcount tracker.
Fixes: 2ad7bf363841 ("ipvlan: Initial check-in of the IPVLAN driver.")
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ipvlan/ipvlan.h')
| -rw-r--r-- | drivers/net/ipvlan/ipvlan.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ipvlan/ipvlan.h b/drivers/net/ipvlan/ipvlan.h index de94921cbef9..025e0c19ec25 100644 --- a/drivers/net/ipvlan/ipvlan.h +++ b/drivers/net/ipvlan/ipvlan.h @@ -98,6 +98,7 @@ struct ipvl_port { struct sk_buff_head backlog; int count; struct ida ida; + netdevice_tracker dev_tracker; }; struct ipvl_skb_cb { |