This lts-trusty test kernel is not booting when installed on 12.04.5. There are multiple events like this being recorded on the serial: udevd[275]: timeout: killing '/sbin/modprobe -bv vmbus:394f16571591784eab55382f3bd5422d' [380] udevd[246]: timeout: killing '/sbin/modprobe -bv vmbus:e7f4a0a9455a964db8278a841e8c03e6' [386] udevd[249]: timeout: killing '/sbin/modprobe -bv vmbus:292efa3523ea364296ae3a6ebacba440' [394]
Removing the network card from the VM config, the system is booting normally. Trying to boot the VM again with a NIC attached, the system is booting eventually, though we see the failed modprobe attempts. There is also this call trace showing up that I was able to capture. Will check with the peers from our end if we can identify the missing patch or the one that's causing this. [ 361.072113] INFO: task modprobe:740 blocked for more than 120 seconds. [ 361.074061] Not tainted 3.13.0-78-generic #122 [ 361.075771] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 361.077886] modprobe D ffff88007ce33180 0 740 656 0x00000004 [ 361.077896] ffff880078193bc0 0000000000000086 ffff880036b26000 0000000000013180 [ 361.077901] ffff880078193fd8 0000000000013180 ffff880036b26000 ffff88007b60c240 [ 361.077905] ffff88007b60c244 ffff880036b26000 00000000ffffffff ffff88007b60c248 [ 361.077916] Call Trace: [ 361.077924] [<ffffffff817294c9>] schedule_preempt_disabled+0x29/0x70 [ 361.077930] [<ffffffff8172b335>] __mutex_lock_slowpath+0x135/0x1b0 [ 361.077938] [<ffffffff81499e50>] ? __device_attach+0x40/0x40 [ 361.077943] [<ffffffff8172b3cf>] mutex_lock+0x1f/0x2f [ 361.077953] [<ffffffff81499e99>] __driver_attach+0x49/0xa0 [ 361.077958] [<ffffffff81499e50>] ? __device_attach+0x40/0x40 [ 361.077963] [<ffffffff81497aa3>] bus_for_each_dev+0x63/0xa0 [ 361.077970] [<ffffffff8149950e>] driver_attach+0x1e/0x20 [ 361.077975] [<ffffffff814990f0>] bus_add_driver+0x180/0x250 [ 361.077986] [<ffffffff8149a564>] driver_register+0x64/0xf0 [ 361.077996] [<ffffffffa001bda7>] __vmbus_driver_register+0x57/0x60 [hv_vmbus] [ 361.078001] [<ffffffffa0049000>] ? 0xffffffffa0048fff [ 361.078009] [<ffffffffa004901e>] hv_kbd_init+0x1e/0x1000 [hyperv_keyboard] [ 361.078019] [<ffffffff8100214a>] do_one_initcall+0xfa/0x1b0 [ 361.078026] [<ffffffff81059833>] ? set_memory_nx+0x43/0x50 [ 361.078032] [<ffffffff810e28fd>] load_module+0x12ed/0x1b50 [ 361.078038] [<ffffffff810de350>] ? store_uevent+0x40/0x40 [ 361.078049] [<ffffffff810e3202>] SyS_init_module+0xa2/0xf0 [ 361.078054] [<ffffffff817356dd>] system_call_fastpath+0x1a/0x1f -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-lts-utopic in Ubuntu. https://bugs.launchpad.net/bugs/1454892 Title: [Hyper-V] hv_netvsc: Use the xmit_more skb flag to optimize signaling the host Status in linux package in Ubuntu: In Progress Status in linux-lts-trusty package in Ubuntu: In Progress Status in linux-lts-utopic package in Ubuntu: Won't Fix Status in linux-lts-trusty source package in Precise: In Progress Status in linux source package in Trusty: In Progress Status in linux-lts-utopic source package in Trusty: Won't Fix Status in linux source package in Vivid: Fix Released Status in linux source package in Wily: Fix Released Bug description: hv_netvsc: Use the xmit_more skb flag to optimize signaling the host Based on the information given to this driver (via the xmit_more skb flag), we can defer signaling the host if more packets are on the way. This will help make the host more efficient since it can potentially process a larger batch of packets. Implement this optimization. Upstream commit: https://git.kernel.org/cgit/linux/kernel/git/davem /net-next.git/commit/?id=82fa3c776e5abba7ed6e4b4f4983d14731c37d6a This commit may imply other commits previously requested, for example https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1452074 Requested for all typical Hyper-V targets: 15.10, 15.04, 14.10, 14.04, 14.04 HWE, 12.02, and 12.02 HWE To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1454892/+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
