Public bug reported: ---Problem Description--- If I enable SRIOV in a Mellanox CX4 card while a PF interface is doing something like a ping flood. The PF interface will stop pinging. We found a small window were MMIO are bein g disabled during pci_enable_sriov is called. ---uname output--- 4.4.0-30-generic ---Additional Hardware Info--- It needs a Mellanox CX4 SRIOV capable to recreate this issue
Machine Type = P8 ---Steps to Reproduce--- just configure the IP address of PF interface and start like a ping flood to that interface. then do this echo to enable SRIOV on the PF. echo 8 > /sys/class/net/enP1p1s0f0/device/sriov_numvfs Then you will notice the ping flood will stop. A patch that will fix this issue was sent for review: https://patchwork.ozlabs.org/patch/671517/ ** Affects: linux (Ubuntu) Importance: Undecided Assignee: Taco Screen team (taco-screen-team) Status: New ** Tags: architecture-ppc64le bugnameltc-146479 severity-high targetmilestone-inin1610 ** Tags added: architecture-ppc64le bugnameltc-146479 severity-high targetmilestone-inin1610 ** Changed in: ubuntu Assignee: (unassigned) => Taco Screen team (taco-screen-team) ** Package changed: ubuntu => linux (Ubuntu) -- 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/1625318 Title: Ubuntu 16.10 KVM SRIOV: if enable sriov while ping flood is running ping will stop working Status in linux package in Ubuntu: New Bug description: ---Problem Description--- If I enable SRIOV in a Mellanox CX4 card while a PF interface is doing something like a ping flood. The PF interface will stop pinging. We found a small window were MMIO are bein g disabled during pci_enable_sriov is called. ---uname output--- 4.4.0-30-generic ---Additional Hardware Info--- It needs a Mellanox CX4 SRIOV capable to recreate this issue Machine Type = P8 ---Steps to Reproduce--- just configure the IP address of PF interface and start like a ping flood to that interface. then do this echo to enable SRIOV on the PF. echo 8 > /sys/class/net/enP1p1s0f0/device/sriov_numvfs Then you will notice the ping flood will stop. A patch that will fix this issue was sent for review: https://patchwork.ozlabs.org/patch/671517/ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1625318/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
