trusty/linux-azure: 4.15.0-1100.111~14.04.1 -proposed tracker

Bug #1903122 reported by Kelsey Steele
12
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Kernel SRU Workflow
Fix Released
Medium
Unassigned
Automated-testing
Invalid
Medium
Unassigned
Certification-testing
Invalid
Medium
Unassigned
Prepare-package
Fix Released
Medium
Kelsey Steele
Prepare-package-meta
Fix Released
Medium
Kelsey Steele
Prepare-package-signed
Fix Released
Medium
Kelsey Steele
Promote-signing-to-proposed
Fix Released
Medium
Andy Whitcroft
Promote-to-proposed
Fix Released
Medium
Andy Whitcroft
Promote-to-security
Invalid
Medium
Ubuntu Stable Release Updates Team
Promote-to-updates
Fix Released
Medium
Andy Whitcroft
Regression-testing
Fix Released
Medium
Po-Hsu Lin
Security-signoff
Invalid
Medium
Canonical Security Team
Stakeholder-signoff
Fix Released
Medium
linux-azure stakeholder signoff
Verification-testing
Fix Released
Medium
Canonical Kernel Team
linux-azure (Ubuntu)
Trusty
Confirmed
Medium
Unassigned

Bug Description

This bug will contain status and test results related to a kernel source (or snap) as stated in the title.

For an explanation of the tasks and the associated workflow see:
  https://wiki.ubuntu.com/Kernel/kernel-sru-workflow

-- swm properties --
boot-testing-requested: true
kernel-stable-master-bug: 1903123
packages:
  main: linux-azure
  meta: linux-meta-azure
  signed: linux-signed-azure
phase: Complete
phase-changed: Wednesday, 02. December 2020 06:48 UTC
proposed-announcement-sent: true
proposed-testing-requested: true
reason: {}
synthetic:
  :promote-to-as-proposed: Invalid
variant: debs
versions:
  main: 4.15.0-1100.111~14.04.1
  meta: 4.15.0.1100.75
  signed: 4.15.0-1100.111~14.04.1

tags: added: kernel-release-tracking-bug-live
description: updated
tags: added: kernel-sru-cycle-2020.11.09-1
description: updated
tags: added: kernel-sru-backport-of-1903123
Changed in kernel-sru-workflow:
status: New → Confirmed
importance: Undecided → Medium
Changed in linux-azure (Ubuntu Trusty):
importance: Undecided → Medium
Changed in kernel-sru-workflow:
status: Confirmed → In Progress
description: updated
description: updated
summary: - trusty/linux-azure: <version to be filled> -proposed tracker
+ trusty/linux-azure: 4.15.0-1100.111~14.04.1 -proposed tracker
description: updated
description: updated
description: updated
description: updated
description: updated
description: updated
description: updated
description: updated
description: updated
description: updated
description: updated
description: updated
Revision history for this message
Joshua R. Poulson (jrp) wrote :

Still exhibits this behavior (known issue):

Create VM on Azure using Canonical UbuntuServer 14.04.5-LTS latest using size Standard DS2 v2
Install kexec-tools kdump-tools makedumpfile, configure boot kernel parameter crashkernel=512M
Run sed -i 's/USE_KDUMP=0/USE_KDUMP=1/g' /etc/default/kdump-tools and sed -i 's/LOAD_KEXEC=true/LOAD_KEXEC=false/g' /etc/default/kexec
Reboot VM, make sure crash kernel memory reserved successfully
Trigger a crash by run echo 1 > /proc/sys/kernel/sysrq, then echo c > /proc/sysrq-trigger, VM will reboot automatically and after reboot, check crash dump is generated under /var/crash
Install linux-azure kernel
Enable private-ppa canonical-kernel-esm
Install kernel linux-azure, reboot VM, kernel version 4.15.0-1084-azure
Trigger a crash by run echo 1 > /proc/sys/kernel/sysrq, then echo c > /proc/sysrq-trigger, VM entered into a hung status.

Attach whole serial console
[ 65.452007] INFO: rcu_sched detected stalls on CPUs/tasks:
[ 65.456004] 1-...!: (0 ticks this GP) idle=488/0/0 softirq=1/1 fqs=0
[ 65.456004] (detected by 0, t=15002 jiffies, g=707, c=706, q=8457)
[ 65.456004] rcu_sched kthread starved for 15002 jiffies! g707 c706 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=1
[ 360.020026] INFO: rcu_sched detected stalls on CPUs/tasks:
[ 360.024015] 1-...!: (10 GPs behind) idle=b34/0/0 softirq=1/1 fqs=1
[ 360.024015] (detected by 0, t=15002 jiffies, g=717, c=716, q=6429)
[ 360.024015] rcu_sched kthread starved for 15000 jiffies! g717 c716 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=1
[ 420.048010] INFO: rcu_sched detected stalls on CPUs/tasks:
[ 420.052006] 1-...!: (0 ticks this GP) idle=f94/0/0 softirq=1/1 fqs=0
[ 420.052006] (detected by 0, t=15002 jiffies, g=718, c=717, q=6429)
[ 420.052006] rcu_sched kthread starved for 15002 jiffies! g718 c717 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=1

Revision history for this message
Joshua R. Poulson (jrp) wrote :
description: updated
Revision history for this message
Po-Hsu Lin (cypressyew) wrote :

4.15.0-1100.111~14.04.1 - azure
Regression test CMPL, RTB.

Issue to note in x86_64 (azure):
  ubuntu_kvm_unit_tests - apic timeouted (bug 1748103) memory (bug 1854342) umip (1821905) vmx (bug 1821394) vmx_host_state_area (bug 1866585) vmx_intr_window_test (bug 1866586) vmx_nm_test timeout (bug 1872419) vmx_nmi_window_test (bug 1866588) vmx_pending_event_test (bug 1866591) failed on Standard_D48_v3, Standard_F2s_v2, Standard_F32s_v2
  ubuntu_ltp_syscalls - clock_gettime04 failed on Basic_A2 fanotify09 case 3 (bug 1876684) getrusage04 on Basic_A2 (bug 1841425) move_pages12 on Standard_D48_v3 (bug 1831043) openat03 (bug 1798027) prctl07 (bug 1839064) ptrace10 (bug 1900951) shmctl04 (bug 1895276)
  ubuntu_lxc - lxc tests failed on Azure T-4.15 (bug 1813878)
  ubunut_qrt_apparmor - timed out on Standard-B1ms (bug 1783922)

Skipped / blacklisted:
  * ubuntu_fan_smoke_test
  * ubuntu_kernel_selftests
  * ubuntu_ltp
  * ubuntu_lttng_smoke_test
  * ubuntu_nbd_smoke_test
  * ubuntu_sysdig_smoke_test
  * ubuntu_zfs_smoke_test

tags: added: regression-testing-passed
description: updated
description: updated
description: updated
description: updated
description: updated
description: updated
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Workflow done!

All tasks have been completed and the bug is being set to Fix Released

Changed in kernel-sru-workflow:
status: In Progress → Fix Released
Andy Whitcroft (apw)
tags: removed: kernel-release-tracking-bug-live
Changed in linux-azure (Ubuntu Trusty):
status: New → Confirmed
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