Ubuntu
linux-azure package

Azure diagnostic/serviceability improvement

Bug #1875456 reported by Joseph Salisbury
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux-azure (Ubuntu)
Fix Released
Undecided
Unassigned
Bionic
Invalid
Undecided
Unassigned
linux-azure-4.15 (Ubuntu)
New
Undecided
Unassigned
Bionic
Fix Released
Undecided
Unassigned

Bug Description

Microsoft would like to request the inclusion of commits in all releases supported on Azure. These commits will enable reporting 4 Kbytes of dmesg information to Hyper-V when Linux takes a panic.

Microsoft would like to get all releases reporting this information, so that we can automatically get a rich picture of Linux panics in Azure. This will limit the need get serial console logs or other steps to manually acquire debug info.

We would like to request the folloiwng commits to enable the diagnostic/serviceability improvement:

f3a99e761efa ("x86/Hyper-V: Report crash data in die() when panic_on_oops is set")
040026df7088 ("x86/Hyper-V: Report crash register data when sysctl_record_panic_msg is not set")
a11589563e96 ("x86/Hyper-V: Report crash register data or kmsg before running crash kernel")
73f26e526f19 ("x86/Hyper-V: Trigger crash enlightenment only once during system crash.")
7f11a2cc10a4 ("x86/Hyper-V: Free hv_panic_page when fail to register kmsg dump")
74347a99e73a ("x86/Hyper-V: Unload vmbus channel in hv panic callback")
8afc06dd75c0 ("Drivers: hv: vmbus: Fix the issue with freeing up hv_ctl_table_hdr")
ddcaf3ca4c3c ("Drivers: hv: vmus: Fix the check for return value from kmsg get dump buffer")
81b18bce48af ("Drivers: HV: Send one page worth of kmsg dump over Hyper-V during panic")
7ed4325a44ea ("Drivers: hv: vmbus: Make panic reporting to be more useful")

CVE References

Revision history for this message
Marcelo Cerri (mhcerri) wrote :

The changes are only necessary for 4.15. 5.4 and 5.3 already have all the chances via mainline or upstream stable updates.

Changed in linux-azure (Ubuntu Bionic):
status: New → Invalid
Revision history for this message
Marcelo Cerri (mhcerri) wrote :

Cover letter for the SRU submission: https://lists.ubuntu.com/archives/kernel-team/2020-June/111061.html

Marcelo Cerri (mhcerri)
Changed in linux-azure-4.15 (Ubuntu Bionic):
status: New → In Progress
Khaled El Mously (kmously)
Changed in linux-azure-4.15 (Ubuntu Bionic):
status: In Progress → Fix Committed
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux-azure-4.15 - 4.15.0-1092.102

---------------
linux-azure-4.15 (4.15.0-1092.102) bionic; urgency=medium

  * bionic/linux-azure-4.15: 4.15.0-1092.102 -proposed tracker (LP: #1887034)

  * Azure diagnostic/serviceability improvement (LP: #1875456)
    - Drivers: HV: Send one page worth of kmsg dump over Hyper-V during panic
    - Drivers: hv: vmus: Fix the check for return value from kmsg get dump buffer
    - Drivers: hv: vmbus: Fix the issue with freeing up hv_ctl_table_hdr
    - x86/Hyper-V: Unload vmbus channel in hv panic callback
    - x86/Hyper-V: Free hv_panic_page when fail to register kmsg dump
    - x86/Hyper-V: Trigger crash enlightenment only once during system crash.
    - x86/Hyper-V: Report crash register data or kmsg before running crash kernel
    - x86/Hyper-V: Report crash register data when sysctl_record_panic_msg is not
      set
    - x86/Hyper-V: Report crash data in die() when panic_on_oops is set

  * Request to include two NUMA related commits in Azure kernels (LP: #1880975)
    - PCI: hv: Decouple the func definition in hv_dr_state from VSP message
    - PCI: hv: Add support for protocol 1.3 and support PCI_BUS_RELATIONS2

  [ Ubuntu: 4.15.0-112.113 ]

  * bionic/linux: 4.15.0-112.113 -proposed tracker (LP: #1887048)
  * Packaging resync (LP: #1786013)
    - update dkms package versions
  * CVE-2020-11935
    - SAUCE: aufs: do not call i_readcount_inc()
    - SAUCE: aufs: bugfix, IMA i_readcount
  * CVE-2020-10757
    - mm: Fix mremap not considering huge pmd devmap
  * Update lockdown patches (LP: #1884159)
    - efi/efi_test: Lock down /dev/efi_test and require CAP_SYS_ADMIN
    - efi: Restrict efivar_ssdt_load when the kernel is locked down
    - powerpc/xmon: add read-only mode
    - powerpc/xmon: Restrict when kernel is locked down
    - [Config] CONFIG_XMON_DEFAULT_RO_MODE=y
    - SAUCE: acpi: disallow loading configfs acpi tables when locked down
  * seccomp_bpf fails on powerpc (LP: #1885757)
    - SAUCE: selftests/seccomp: fix ptrace tests on powerpc
  * Introduce the new NVIDIA 418-server and 440-server series, and update the
    current NVIDIA drivers (LP: #1881137)
    - [packaging] add signed modules for the 418-server and the 440-server
      flavours

  [ Ubuntu: 4.15.0-111.112 ]

  * bionic/linux: 4.15.0-111.112 -proposed tracker (LP: #1886999)
  * Bionic update: upstream stable patchset 2020-05-07 (LP: #1877461)
    - SAUCE: mlxsw: Add missmerged ERR_PTR hunk
  * linux 4.15.0-109-generic network DoS regression vs -108 (LP: #1886668)
    - SAUCE: Revert "netprio_cgroup: Fix unlimited memory leak of v2 cgroups"

 -- Marcelo Henrique Cerri <email address hidden> Tue, 14 Jul 2020 14:35:51 -0300

Changed in linux-azure-4.15 (Ubuntu Bionic):
status: Fix Committed → Fix Released
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux-azure - 4.15.0-1092.102~16.04.1

---------------
linux-azure (4.15.0-1092.102~16.04.1) xenial; urgency=medium

  * xenial/linux-azure: 4.15.0-1092.102~16.04.1 -proposed tracker (LP: #1887032)

  [ Ubuntu: 4.15.0-1092.102 ]

  * bionic/linux-azure-4.15: 4.15.0-1092.102 -proposed tracker (LP: #1887034)
  * Azure diagnostic/serviceability improvement (LP: #1875456)
    - Drivers: HV: Send one page worth of kmsg dump over Hyper-V during panic
    - Drivers: hv: vmus: Fix the check for return value from kmsg get dump buffer
    - Drivers: hv: vmbus: Fix the issue with freeing up hv_ctl_table_hdr
    - x86/Hyper-V: Unload vmbus channel in hv panic callback
    - x86/Hyper-V: Free hv_panic_page when fail to register kmsg dump
    - x86/Hyper-V: Trigger crash enlightenment only once during system crash.
    - x86/Hyper-V: Report crash register data or kmsg before running crash kernel
    - x86/Hyper-V: Report crash register data when sysctl_record_panic_msg is not
      set
    - x86/Hyper-V: Report crash data in die() when panic_on_oops is set
  * Request to include two NUMA related commits in Azure kernels (LP: #1880975)
    - PCI: hv: Decouple the func definition in hv_dr_state from VSP message
    - PCI: hv: Add support for protocol 1.3 and support PCI_BUS_RELATIONS2
  * bionic/linux: 4.15.0-112.113 -proposed tracker (LP: #1887048)
  * Packaging resync (LP: #1786013)
    - update dkms package versions
  * CVE-2020-11935
    - SAUCE: aufs: do not call i_readcount_inc()
    - SAUCE: aufs: bugfix, IMA i_readcount
  * CVE-2020-10757
    - mm: Fix mremap not considering huge pmd devmap
  * Update lockdown patches (LP: #1884159)
    - efi/efi_test: Lock down /dev/efi_test and require CAP_SYS_ADMIN
    - efi: Restrict efivar_ssdt_load when the kernel is locked down
    - powerpc/xmon: add read-only mode
    - powerpc/xmon: Restrict when kernel is locked down
    - [Config] CONFIG_XMON_DEFAULT_RO_MODE=y
    - SAUCE: acpi: disallow loading configfs acpi tables when locked down
  * seccomp_bpf fails on powerpc (LP: #1885757)
    - SAUCE: selftests/seccomp: fix ptrace tests on powerpc
  * Introduce the new NVIDIA 418-server and 440-server series, and update the
    current NVIDIA drivers (LP: #1881137)
    - [packaging] add signed modules for the 418-server and the 440-server
      flavours
  * bionic/linux: 4.15.0-111.112 -proposed tracker (LP: #1886999)
  * Bionic update: upstream stable patchset 2020-05-07 (LP: #1877461)
    - SAUCE: mlxsw: Add missmerged ERR_PTR hunk
  * linux 4.15.0-109-generic network DoS regression vs -108 (LP: #1886668)
    - SAUCE: Revert "netprio_cgroup: Fix unlimited memory leak of v2 cgroups"

 -- Marcelo Henrique Cerri <email address hidden> Tue, 14 Jul 2020 16:45:11 -0300

Changed in linux-azure (Ubuntu):
status: New → Fix Released
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