This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- trusty' to 'verification-done-trusty'. If the problem still exists, change the tag 'verification-needed-trusty' to 'verification-failed- trusty'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-trusty ** Tags added: verification-needed-xenial -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1668042 Title: [Xenial - 16.04 ]Bonding driver - stack corruption when trying to copy 20 bytes to a sockaddr Status in linux package in Ubuntu: Fix Committed Status in linux source package in Trusty: Fix Committed Status in linux source package in Xenial: Fix Committed Bug description: In Ubuntu Xenial with kernel 4.4.0-65, we get kernel Panic after scenario . patch  should fix the issue When using an IPoIB bond currently only active-backup mode is a valid use case and this commit strengthens it. Since commit 2ab82852a270 ("net/bonding: Enable bonding to enslave netdevices not supporting set_mac_address()") was introduced till 4.7-rc1, IPoIB didn't support the set_mac_address ndo, and hence the fail over mac policy always applied to IPoIB bonds. With the introduction of commit 492a7e67ff83 ("IB/IPoIB: Allow setting the device address"), that doesn't hold and practically IPoIB bonds are broken as of that. To fix it, lets go to fail over mac if the device doesn't support the ndo OR this is IPoIB device. As a by-product, this commit also prevents a stack corruption which occurred when trying to copy 20 bytes (IPoIB) device address to a sockaddr struct that has only 16 bytes of storage.  Get panic after create bond with down/updelay and restart NIC driver Configure bond with down/updelay cat /etc/network/interfaces auto bond1 iface bond1 inet static address 220.127.116.11 netmask 255.255.0.0 bond-slaves ib0 ib1 bond-miimon 100 bond-updelay 5000 bond-mode active-backup bond-primary ib1 bond-downdelay 5000 auto ib0 iface ib0 inet manual bond-master bond1 auto ib1 iface ib1 inet manual bond-master bond1 modprobe -r <Ipoib-nic-driver>  1533e77315220dc1d5ec3bd6d9fe32e2aa0a74c0 net/bonding: Enforce active-backup policy for IPoIB bonds To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1668042/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp