Tested with the latest upstream trusty kernel version as requested -- Linux 3.13.11-03131104-generic #201406201536 SMP Fri Jun 20 19:37:17 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
Seeing similar behavior there with things like: [88719.002167] INFO: task qemu-system-x86:215923 blocked for more than 120 seconds. [88719.009603] Not tainted 3.13.11-03131104-generic #201406201536 [88719.015985] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [88719.023857] qemu-system-x86 D ffffffff818114c0 0 215923 1 0x00000000 [88719.023859] ffff881e43703d30 0000000000000002 ffffffff81091670 ffff881e43703fd8 [88719.023862] 0000000000014440 0000000000014440 ffff881fd2c0afe0 ffff881e435dc7d0 [88719.023864] ffffffff81091748 ffff881e435dc7d0 ffff883fd1633160 ffff883fd1633168 [88719.023867] Call Trace: [88719.023869] [<ffffffff81091670>] ? lock_hrtimer_base.isra.24+0x30/0x60 [88719.023871] [<ffffffff81091748>] ? hrtimer_try_to_cancel+0x58/0x110 [88719.023874] [<ffffffff8174c5e9>] schedule+0x29/0x70 [88719.023876] [<ffffffff8174efc5>] rwsem_down_read_failed+0xb5/0x140 [88719.023881] [<ffffffff81091822>] ? hrtimer_cancel+0x22/0x30 [88719.023889] [<ffffffff813780b4>] call_rwsem_down_read_failed+0x14/0x30 [88719.023892] [<ffffffff8174ea74>] ? down_read+0x24/0x30 [88719.023895] [<ffffffff8175439a>] __do_page_fault+0x20a/0x570 [88719.023897] [<ffffffff81116d6c>] ? acct_account_cputime+0x1c/0x20 [88719.023900] [<ffffffff810a1099>] ? account_user_time+0x99/0xb0 [88719.023902] [<ffffffff810a171d>] ? vtime_account_user+0x5d/0x70 [88719.023904] [<ffffffff8175471a>] do_page_fault+0x1a/0x70 [88719.023906] [<ffffffff81750888>] page_fault+0x28/0x30 --- and the VMs with hyperv enabled see the delay: [kernel 3.11] [80683.552092] INFO: rcu_sched self-detected stall on CPU { 0} (t=15897 jiffies g=315984 c=315983 q=0) and [kernel 2.6] hrtimer: interrupt took 3950739 ns Clocksource tsc unstable (delta = -8589936825 ns) Not seeing this at all with kernel 3.12. Added tags kernel-bug-exists-upstream kernel-bug-exists- upstream-3.13.11-03131104-generic as requested. ** Tags added: kernel-bug-exists-upstream kernel-bug-exists- upstream-3.13.11-03131104-generic ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- 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/1332409 Title: [Supermicro X9DR3-F] Virtual machines hang in kernel 3.13 Status in “linux” package in Ubuntu: Confirmed Bug description: Multi-cpu systems are experiencing guest kernels hanging/crashing (both windows & linux guests) in kernel 3.13. (Windows guests are getting bluescreens, linux guests just seem to be locking up). Downgrading to 3.12 eliminates the problem. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-29-lowlatency 3.13.0-29.53 ProcVersionSignature: Ubuntu 3.13.0-29.53-lowlatency 3.13.11.2 Uname: Linux 3.13.0-29-lowlatency x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Jun 18 16:43 seq crw-rw---- 1 root audio 116, 33 Jun 18 16:43 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory: 'iw' Date: Fri Jun 20 01:07:59 2014 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' Lsusb: Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 003: ID 0557:2221 ATEN International Co., Ltd Winbond Hermon Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Supermicro X9DR3-F PciMultimedia: ProcEnviron: TERM=linux PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-lowlatency root=UUID=0d5098de-e0c2-4884-bf6a-5d68f9ad5266 ro console=tty1 console=ttyS1,115200n8 nomodeset rootdelay=15 text nomdmonddf nomdmonisw RelatedPackageVersions: linux-restricted-modules-3.13.0-29-lowlatency N/A linux-backports-modules-3.13.0-29-lowlatency N/A linux-firmware 1.127.2 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: Upgraded to trusty on 2014-04-19 (61 days ago) dmi.bios.date: 07/31/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3.0a dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: X9DR3-F dmi.board.vendor: Supermicro dmi.board.version: 0123456789 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Supermicro dmi.chassis.version: 0123456789 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3.0a:bd07/31/2013:svnSupermicro:pnX9DR3-F:pvr0123456789:rvnSupermicro:rnX9DR3-F:rvr0123456789:cvnSupermicro:ct3:cvr0123456789: dmi.product.name: X9DR3-F dmi.product.version: 0123456789 dmi.sys.vendor: Supermicro To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1332409/+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