Now queued in https://git.kernel.org/pub/scm/linux/kernel/git/jkirsher /next-queue.git/log/?h=dev-queue
** Description changed: - Hi, - I've recently upgraded my system to ubuntu 19.04, and kernel consistently panics when I boot a virtual machine using an SR-IOV VFIO virtual function. Could reproduce with 5.0.0-13-generic and 5.0.0-15-generic, doesn't happen with 4.18.0-20-generic. + [Impact] + If you pass a vf of an intel 10G nic - such as the X550T - into a VM, and that nic does not support IPsec, the system will oops. - I'm using libvirt and VM is using KVM, XML snippet to delegate virtual - function to VM is: + [Test Case] + Enable virtual functions (e.g. (class/net/em1/device/sriov_numvfs = 4). + + Use an XML snippet to delegate virtual function to VM, e.g.: <hostdev mode='subsystem' type='pci' managed='yes'> <driver name='vfio'/> <source> <address domain='0x0000' bus='0x05' slot='0x10' function='0x0'/> </source> <alias name='hostdev0'/> <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0'/> </hostdev> - As soon as I start the VM using "virsh start vm", kernel panics. + Start VM. - I'm using X550T intel NIC (lspci output: Ethernet controller: Intel - Corporation Ethernet Controller 10G X550T (rev 01)) on a Supermicro - X11SSH-CTF motherboard, with up to date bios and 4 virtual functions - (class/net/em1/device/sriov_numvfs = 4). + [Fix] + https://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue.git/commit/?h=dev-queue&id=a2243a4faae5a3c210995ade2cbca369b20daa0f - Given panic stack trace (see attachment), I've narrowed down the bug to - ixgbe_ipsec_vf_clear function in upstream ixgbe driver: - https://github.com/torvalds/linux/blob/72cf0b07418a9c8349aa9137194b1ccba6e54a9d/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c#L840 - - When I comment its usage - (https://github.com/torvalds/linux/blob/72cf0b07418a9c8349aa9137194b1ccba6e54a9d/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c#L734), - everything works as expected (I'm not using any ipsec feature). Didn't - try to fix the ixgbe_ipsec_vf_clear function though. - - Please find attached a stack trace collected using IPMI serial-over-lan. + [Regression Risk] + Restricted to the ixgbe driver. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1829652 Title: Kernel panic upon resetting ixgbe SR-IOV VFIO virtual function using 5.0 kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1829652/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
