On Tue, Oct 10, 2017 at 2:30 PM, Joseph Salisbury < joseph.salisb...@canonical.com> wrote:
> Did this issue start happening after an update/upgrade? Was there a > prior kernel version where you were not having this particular problem? > Around, September this year is when we started noticing the softlockups in Artful guests this continues now in Bionic guests as well. Host is Xenial, we're now on Xenial-hwe (4.10.0.40-generic x86). We still see the issue daily. > > Would it be possible for you to test the latest upstream kernel? Refer > to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest > v4.14 kernel[0]. > System is used in CI production, so we can't easily test upstream. > > If this bug is fixed in the mainline kernel, please add the following > tag 'kernel-fixed-upstream'. > > If the mainline kernel does not fix this bug, please add the tag: > 'kernel-bug-exists-upstream'. > > Once testing of the upstream kernel is complete, please mark this bug as > "Confirmed". > > > Thanks in advance. > > [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.14-rc4 > > ** Changed in: linux (Ubuntu) > Importance: Undecided => Medium > > ** Changed in: linux (Ubuntu) > Status: Confirmed => Incomplete > > ** Tags added: kernel-da-key > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1722311 > > Title: > softlockups/rcu sched > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/ > 1722311/+subscriptions > -- 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/1722311 Title: softlockups/rcu sched Status in linux package in Ubuntu: Expired Bug description: 1.$ lsb_release -rd Description: Ubuntu Artful Aardvark (development branch) Release: 17.10 2. $ apt-cache policy linux-image-virtual linux-image-virtual: Installed: 4.13.0.11.12 Candidate: 4.13.0.11.12 Version table: *** 4.13.0.11.12 500 500 http://archive.ubuntu.com/ubuntu artful/main amd64 Packages 100 /var/lib/dpkg/status 3. System shutsdown cleanly, qemu exits non-zero 4. System stays hung until testcase timesout. Single VCPU kvm guest on Artful host. Reached target Shutdown. [ 60.036030] watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [systemd:1] [ 88.036012] watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [systemd:1] [ 96.920015] INFO: rcu_sched detected stalls on CPUs/tasks: [ 96.920526] (detected by 0, t=15002 jiffies, g=3321, c=3320, q=377) [ 96.921161] All QSes seen, last rcu_sched kthread activity 15002 (4294916526-4294901524), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 96.922409] rcu_sched kthread starved for 15002 jiffies! g3321 c3320 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 [ 124.036015] watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [systemd:1] [ 152.036020] watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [systemd:1] [ 180.036016] watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [systemd:1] [ 208.036013] watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [systemd:1] [ 236.036015] watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [systemd:1] [ 264.036012] watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [systemd:1] [ 276.940010] INFO: rcu_sched detected stalls on CPUs/tasks: [ 276.940520] (detected by 0, t=60007 jiffies, g=3321, c=3320, q=377) [ 276.941088] All QSes seen, last rcu_sched kthread activity 60007 (4294961531-4294901524), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 276.942165] rcu_sched kthread starved for 60007 jiffies! g3321 c3320 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-11-generic 4.13.0-11.12 ProcVersionSignature: User Name 4.13.0-11.12-generic 4.13.1 Uname: Linux 4.13.0-11-generic x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Oct 9 15:06 seq crw-rw---- 1 root audio 116, 33 Oct 9 15:06 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.7-0ubuntu1 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: N/A Date: Mon Oct 9 15:13:30 2017 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: QEMU Standard PC (i440FX + PIIX, 1996) PciMultimedia: ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=C.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-11-generic root=LABEL=cloudimg-rootfs ro console=tty1 console=ttyS0 RelatedPackageVersions: linux-restricted-modules-4.13.0-11-generic N/A linux-backports-modules-4.13.0-11-generic N/A linux-firmware N/A RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/01/2014 dmi.bios.vendor: SeaBIOS dmi.bios.version: 1.10.2-1ubuntu1 dmi.chassis.type: 1 dmi.chassis.vendor: QEMU dmi.chassis.version: pc-i440fx-artful dmi.modalias: dmi:bvnSeaBIOS:bvr1.10.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-artful:cvnQEMU:ct1:cvrpc-i440fx-artful: dmi.product.name: Standard PC (i440FX + PIIX, 1996) dmi.product.version: pc-i440fx-artful dmi.sys.vendor: QEMU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1722311/+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
