This is a note to let you know that I've just added the patch titled net: bonding: fix error return code of bond_neigh_init() to the 5.11-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-bonding-fix-error-return-code-of-bond_neigh_init.patch and it can be found in the queue-5.11 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 2055a99da8a253a357bdfd359b3338ef3375a26c Mon Sep 17 00:00:00 2001 From: Jia-Ju Bai <baijiaju1990@xxxxxxxxx> Date: Sun, 7 Mar 2021 19:11:02 -0800 Subject: net: bonding: fix error return code of bond_neigh_init() From: Jia-Ju Bai <baijiaju1990@xxxxxxxxx> commit 2055a99da8a253a357bdfd359b3338ef3375a26c upstream. 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 <oslab@xxxxxxxxxxxxxxx> Signed-off-by: Jia-Ju Bai <baijiaju1990@xxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/bonding/bond_main.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -3917,11 +3917,15 @@ static int bond_neigh_init(struct neighb 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; + } /* TODO: find another way [1] to implement this. * Passing a zeroed structure is fragile, Patches currently in stable-queue which might be from baijiaju1990@xxxxxxxxx are queue-5.11/net-qrtr-fix-error-return-code-of-qrtr_sendmsg.patch queue-5.11/net-bonding-fix-error-return-code-of-bond_neigh_init.patch