This bug was fixed in the package linux - 4.13.0-39.44 --------------- linux (4.13.0-39.44) artful; urgency=medium
* linux: 4.13.0-39.44 -proposed tracker (LP: #1761456) * intel-microcode 3.20180312.0 causes lockup at login screen(w/ linux- image-4.13.0-37-generic) (LP: #1759920) // CVE-2017-5715 (Spectre v2 Intel) // CVE-2017-5754 - x86/mm: Reinitialize TLB state on hotplug and resume * intel-microcode 3.20180312.0 causes lockup at login screen(w/ linux- image-4.13.0-37-generic) (LP: #1759920) // CVE-2017-5715 (Spectre v2 Intel) - Revert "x86/mm: Only set IBPB when the new thread cannot ptrace current thread" - x86/speculation: Use Indirect Branch Prediction Barrier in context switch * DKMS driver builds fail with: Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel (LP: #1760876) - [Packaging] include the retpoline extractor in the headers * retpoline hints: primary infrastructure and initial hints (LP: #1758856) - [Packaging] retpoline-extract: flag *0xNNN(%reg) branches - x86/speculation, objtool: Annotate indirect calls/jumps for objtool - x86/speculation, objtool: Annotate indirect calls/jumps for objtool on 32bit - x86/paravirt, objtool: Annotate indirect calls - [Packaging] retpoline -- add safe usage hint support - [Packaging] retpoline-check -- only report additions - [Packaging] retpoline -- widen indirect call/jmp detection - [Packaging] retpoline -- elide %rip relative indirections - [Packaging] retpoline -- clear hint information from packages - KVM: x86: Make indirect calls in emulator speculation safe - KVM: VMX: Make indirect call speculation safe - x86/boot, objtool: Annotate indirect jump in secondary_startup_64() - SAUCE: early/late -- annotate indirect calls in early/late initialisation code - SAUCE: vga_set_mode -- avoid jump tables - [Config] retpoline -- switch to new format - [Packaging] retpoline hints -- handle missing files when RETPOLINE not enabled - [Packaging] final-checks -- remove check for empty retpoline files * retpoline: ignore %cs:0xNNN constant indirections (LP: #1752655) - [Packaging] retpoline -- elide %cs:0xNNNN constants on i386 * zfs system process hung on container stop/delete (LP: #1754584) - SAUCE: Fix non-prefaulted page deadlock (LP: #1754584) * zfs-linux 0.6.5.11-1ubuntu5 ADT test failure with linux 4.15.0-1.2 (LP: #1737761) - SAUCE: (noup) Update zfs to 0.6.5.11-1ubuntu3.2 * AT_BASE_PLATFORM in AUXV is absent on kernels available on Ubuntu 17.10 (LP: #1759312) - powerpc/64s: Fix NULL AT_BASE_PLATFORM when using DT CPU features * btrfs and tar sparse truncate archives (LP: #1757565) - Btrfs: move definition of the function btrfs_find_new_delalloc_bytes - Btrfs: fix reported number of inode blocks after buffered append writes * efifb broken on ThunderX-based Gigabyte nodes (LP: #1758375) - drivers/fbdev/efifb: Allow BAR to be moved instead of claiming it * Intel i40e PF reset due to incorrect MDD detection (continues...) (LP: #1723127) - i40e/i40evf: Account for frags split over multiple descriptors in check linearize * Fix an issue that when system in S3, USB keyboard can't wake up the system. (LP: #1759511) - ACPI / PM: Allow deeper wakeup power states with no _SxD nor _SxW * [8086:3e92] display becomes blank after S3 (LP: #1759188) - drm/i915: Apply Display WA #1183 on skl, kbl, and cfl * add audio kernel patches for Raven (LP: #1758364) - ALSA: hda: Add Raven PCI ID - ALSA: hda/realtek - Fix ALC700 family no sound issue * Cpu utilization showing system time for kvm guests (performance) (sysstat) (LP: #1755979) - KVM: PPC: Book3S HV: Fix guest time accounting with VIRT_CPU_ACCOUNTING_GEN * Kernel panic on a nfsroot system (LP: #1734327) - Revert "UBUNTU: SAUCE: LSM stacking: add stacking support to apparmor network hooks" - Revert "UBUNTU: SAUCE: LSM stacking: LSM: Infrastructure management of the remaining blobs" * can't record sound via front headset port on the Dell Precision 3630 (LP: #1759088) - ALSA: hda/realtek - Fix Dell headset Mic can't record * speaker can't output sound anymore after system resumes from S3 on a lenovo machine with alc257 (LP: #1758829) - ALSA: hda/realtek - Fix speaker no sound after system resume * hda driver initialization takes too much time on the machine with coffeelake audio controller [8086:a348] (LP: #1758800) - ALSA: hda - Force polling mode on CFL for fixing codec communication * Let headset-mode initialization be called on Dell Precision 3930 (LP: #1757584) - ALSA: hda/realtek - Add headset mode support for Dell laptop * ubuntu_zram_smoke test will cause soft lockup on Artful ThunderX ARM64 (LP: #1755073) - SAUCE: crypto: thunderx_zip: Fix fallout from CONFIG_VMAP_STACK * [Hyper-V] include kvp fix for Avoid reading past allocated blocks from KVP file (LP: #1750349) - hv: kvp: Avoid reading past allocated blocks from KVP file * IMA policy parsing is broken in 4.13 (LP: #1755804) - ima/policy: fix parsing of fsuuid * external mic not work on Dell OptiPlex 7460 AIO (LP: #1755954) - ALSA: hda/realtek - Add headset mode support for Dell laptop * sbsa watchdog crashes thunderx2 system (LP: #1755595) - watchdog: sbsa: use 32-bit read for WCV * CVE-2018-8043 - net: phy: mdio-bcm-unimac: fix potential NULL dereference in unimac_mdio_probe() -- Stefan Bader <stefan.ba...@canonical.com> Thu, 05 Apr 2018 14:47:00 +0200 ** Changed in: linux (Ubuntu Artful) Status: Fix Committed => Fix Released ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-5715 ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-5754 ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-8043 -- 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/1755979 Title: Cpu utilization showing system time for kvm guests (performance) (sysstat) Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Fix Released Status in linux source package in Artful: Fix Released Status in linux source package in Bionic: Fix Released Bug description: == SRU Justification == All KVM guest cpu utilization is being reported as sys% time in the host. It turns out Guest time accounting (CONFIG_VIRT_CPU_ACCOUNTING_GEN) has been broken since v4.13 by commit 8b24e69fc47e436. Commit 61bd0f66ff92 fixes this bug and is included in mainline as of v4.16-rc5. The commit was cc'd to upstream stable, but has not yet landed in upstream 4.15. == Fix == 61bd0f66ff92 ("KVM: PPC: Book3S HV: Fix guest time accounting with VIRT_CPU_ACCOUNTING_GEN") == Regression Potential == Low. Also cc'd to stable, so it has had additionl upstream review. Limited to powerpc. == Test Case == A test kernel was built with this patch and tested by the original bug reporter. The bug reporter states the test kernel resolved the bug. == Comment: #0 - JENIFER HOPPER <jhop...@us.ibm.com> - 2018-03-14 16:20:47 == +++ This bug was initially created as a clone of Bug #163375 +++ ---Problem Description--- All KVM guest cpu utilization is being reported as sys% time in the host. It turns out Guest time accounting (CONFIG_VIRT_CPU_ACCOUNTING_GEN) has been broken since v4.13 by commit: commit 8b24e69fc47e43679bb29ddb481aa0e8dce2a3c5 Author: Paul Mackerras <pau...@ozlabs.org> Date: Mon Jun 26 15:45:51 2017 +1000 KVM: PPC: Book3S HV: Close race with testing for signals on guest entry --- That is now fixed and upstream accepted in Paulus' tree as git commit: https://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc.git/commit/?h=kvm-ppc-fixes&id=61bd0f66ff92d5ce765ff9850fd3cbfec773c560 ("KVM: PPC: Book3S HV: Fix guest time accounting with VIRT_CPU_ACCOUNTING_GEN") Please include this patch in Ubuntu so that guest cpu accounting is correct. Contact Information = jhop...@us.ibm.com ---uname output--- Linux ltc-b114 4.15.0-10-generic #11-Ubuntu SMP Tue Feb 13 18:21:52 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux Machine Type = 5104-22C ---Debugger--- A debugger is not configured ---Steps to Reproduce--- Start a KVM guest, run something that generates cpu utilization in the guest, observe mpstat on the host. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1755979/+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