On Fri, Mar 19, 2021 at 03:24:38PM +0100, Jiri Kosina wrote:
> On Fri, 19 Mar 2021, Jiri Kosina wrote:
>
> > > [ Upstream commit 2055a99da8a253a357bdfd359b3338ef3375a26c ]
> > >
> > > When slave is NULL or slave_ops->ndo_neigh_setup is NULL, no error
> > > return code of bond_neigh_init() is assigned.
> > > To fix this bug, ret is assigned with -EINVAL in these cases.
> > >
> > > Fixes: 9e99bfefdbce ("bonding: fix bond_neigh_init()")
> > > Reported-by: TOTE Robot <os...@tsinghua.edu.cn>
> > > Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com>
> > > Signed-off-by: David S. Miller <da...@davemloft.net>
> > > Signed-off-by: Sasha Levin <sas...@kernel.org>
> > > ---
> > > drivers/net/bonding/bond_main.c | 8 ++++++--
> > > 1 file changed, 6 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/drivers/net/bonding/bond_main.c
> > > b/drivers/net/bonding/bond_main.c
> > > index 5fe5232cc3f3..fba6b6d1b430 100644
> > > --- a/drivers/net/bonding/bond_main.c
> > > +++ b/drivers/net/bonding/bond_main.c
> > > @@ -3917,11 +3917,15 @@ static int bond_neigh_init(struct neighbour *n)
> > >
> > > rcu_read_lock();
> > > slave = bond_first_slave_rcu(bond);
> > > - if (!slave)
> > > + if (!slave) {
> > > + ret = -EINVAL;
> > > goto out;
> > > + }
> > > slave_ops = slave->dev->netdev_ops;
> > > - if (!slave_ops->ndo_neigh_setup)
> > > + if (!slave_ops->ndo_neigh_setup) {
> > > + ret = -EINVAL;
> > > goto out;
> > > + }
> >
> > This patch is completely broken and breaks bonding functionality
> > altogether for me.
>
> ... and I just found out that revert is already queued in netdev.git. So
> please drop it from stable queue as well.
Ah, missed that, will go drop this now, thanks for letting me know.
greg k-h
