Update lockdown patches

[Seth Forshee]

Impact: The lockdown patches have evolved over time, and part of this was restricting more areas of the kernel. Not all of these additions were backported, and some can lead to lockdown bypasses, see [1] and [2].

Fix: Backport newer lockdown restrictions to older releases.

Test Case: Test cases for most of the backports can be found at [3], and [4] is another test case. Some which need e.g. specific hardware to test have not been tested.

Regression Potential: Most of these are small, simple fixes with low potential for regression. Users may also lose access to some functionality previously accissible under secure boot. Some changes are more substantial, especially the hw_param and debugfs changes for xenial, but they are based on well-tested upstream code. The xmon backports also carry a more moderate risk of regression.

[1] https://lists.ubuntu.com/archives/kernel-team/2020-June/111050.html
[2] https://<email address hidden>/
[3] https://git.launchpad.net/~sforshee/+git/lockdown-tests
[4] https://git.zx2c4.com/american-unsigned-language/tree/american-unsigned-language.sh

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-eoan' to 'verification-done-eoan'. If the problem still exists, change the tag 'verification-needed-eoan' to 'verification-failed-eoan'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed-bionic'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-xenial' to 'verification-done-xenial'. If the problem still exists, change the tag 'verification-needed-xenial' to 'verification-failed-xenial'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu SRU Bot (ubuntu-sru-bot)]

All autopkgtests for the newly accepted linux-hwe-5.0 (5.0.0-57.61~18.04.1) for bionic have finished running.
The following regressions have been reported in tests triggered by the package:

linux-hwe-5.0/5.0.0-57.61~18.04.1 (armhf)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/bionic/update_excuses.html#linux-hwe-5.0

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

[Ubuntu SRU Bot (ubuntu-sru-bot)]

All autopkgtests for the newly accepted linux-gcp-5.4 (5.4.0-1021.21~18.04.1) for bionic have finished running.
The following regressions have been reported in tests triggered by the package:

zfs-linux/0.7.5-1ubuntu16.9 (armhf)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/bionic/update_excuses.html#linux-gcp-5.4

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

[Ubuntu SRU Bot (ubuntu-sru-bot)]

All autopkgtests for the newly accepted linux-azure-5.3 (5.3.0-1034.35~18.04.1) for bionic have finished running.
The following regressions have been reported in tests triggered by the package:

zfs-linux/0.7.5-1ubuntu16.9 (armhf)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/bionic/update_excuses.html#linux-azure-5.3

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

[Ubuntu SRU Bot (ubuntu-sru-bot)]

All autopkgtests for the newly accepted linux-aws-5.3 (5.3.0-1032.34~18.04.1) for bionic have finished running.
The following regressions have been reported in tests triggered by the package:

zfs-linux/0.7.5-1ubuntu16.9 (arm64, amd64)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/bionic/update_excuses.html#linux-aws-5.3

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

[Ubuntu SRU Bot (ubuntu-sru-bot)]

All autopkgtests for the newly accepted linux-aws-5.4 (5.4.0-1020.20~18.04.2) for bionic have finished running.
The following regressions have been reported in tests triggered by the package:

zfs-linux/0.7.5-1ubuntu16.9 (armhf)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/bionic/update_excuses.html#linux-aws-5.4

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

[Ubuntu SRU Bot (ubuntu-sru-bot)]

All autopkgtests for the newly accepted linux-gcp-5.3 (5.3.0-1032.34~18.04.1) for bionic have finished running.
The following regressions have been reported in tests triggered by the package:

zfs-linux/0.7.5-1ubuntu16.9 (armhf)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/bionic/update_excuses.html#linux-gcp-5.3

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

[Seth Forshee (sforshee)]

Tested against -proposed kernels for xenial, bionic, eoan, and focal. Tested against a suite of tests I wrote to exercise as many of the interfaces as possible which are restricted by kernel lockdown, and also tested against the applicable "American Unsigned Language" exploits [1]. Everything looks good.

[1] https://git.zx2c4.com/american-unsigned-language/

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 5.4.0-42.46

---------------
linux (5.4.0-42.46) focal; urgency=medium

  * focal/linux: 5.4.0-42.46 -proposed tracker (LP: #1887069)

  * linux 4.15.0-109-generic network DoS regression vs -108 (LP: #1886668)
    - SAUCE: Revert "netprio_cgroup: Fix unlimited memory leak of v2 cgroups"

linux (5.4.0-41.45) focal; urgency=medium

  * focal/linux: 5.4.0-41.45 -proposed tracker (LP: #1885855)

  * Packaging resync (LP: #1786013)
    - update dkms package versions

  * CVE-2019-19642
    - kernel/relay.c: handle alloc_percpu returning NULL in relay_open

  * CVE-2019-16089
    - SAUCE: nbd_genl_status: null check for nla_nest_start

  * CVE-2020-11935
    - aufs: do not call i_readcount_inc()

  * ip_defrag.sh in net from ubuntu_kernel_selftests failed with 5.0 / 5.3 / 5.4
    kernel (LP: #1826848)
    - selftests: net: ip_defrag: ignore EPERM

  * Update lockdown patches (LP: #1884159)
    - 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

 -- Khalid Elmously <email address hidden> Thu, 09 Jul 2020 19:50:26 -0400

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.15.0-112.113

---------------
linux (4.15.0-112.113) bionic; urgency=medium

  * 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

 -- Khalid Elmously <email address hidden> Thu, 09 Jul 2020 19:13:37 -0400

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.4.0-186.216

---------------
linux (4.4.0-186.216) xenial; urgency=medium

  * xenial/linux: 4.4.0-186.216 -proposed tracker (LP: #1885514)

  * Xenial update: v4.4.228 upstream stable release (LP: #1884564)
    - ipv6: fix IPV6_ADDRFORM operation logic
    - vxlan: Avoid infinite loop when suppressing NS messages with invalid options
    - scsi: return correct blkprep status code in case scsi_init_io() fails.
    - net: phy: marvell: Limit 88m1101 autoneg errata to 88E1145 as well.
    - pwm: fsl-ftm: Use flat regmap cache
    - ARM: 8977/1: ptrace: Fix mask for thumb breakpoint hook
    - sched/fair: Don't NUMA balance for kthreads
    - ath9k_htc: Silence undersized packet warnings
    - x86_64: Fix jiffies ODR violation
    - x86/speculation: Prevent rogue cross-process SSBD shutdown
    - x86/reboot/quirks: Add MacBook6,1 reboot quirk
    - efi/efivars: Add missing kobject_put() in sysfs entry creation error path
    - ALSA: es1688: Add the missed snd_card_free()
    - ALSA: usb-audio: Fix inconsistent card PM state after resume
    - ACPI: sysfs: Fix reference count leak in acpi_sysfs_add_hotplug_profile()
    - ACPI: PM: Avoid using power resources if there are none for D0
    - cgroup, blkcg: Prepare some symbols for module and !CONFIG_CGROUP usages
    - nilfs2: fix null pointer dereference at nilfs_segctor_do_construct()
    - spi: bcm2835aux: Fix controller unregister order
    - ALSA: pcm: disallow linking stream to itself
    - x86/speculation: Change misspelled STIPB to STIBP
    - x86/speculation: Add support for STIBP always-on preferred mode
    - x86/speculation: Avoid force-disabling IBPB based on STIBP and enhanced
      IBRS.
    - x86/speculation: PR_SPEC_FORCE_DISABLE enforcement for indirect branches.
    - spi: dw: fix possible race condition
    - spi: dw: Fix controller unregister order
    - spi: No need to assign dummy value in spi_unregister_controller()
    - spi: Fix controller unregister order
    - spi: pxa2xx: Fix controller unregister order
    - spi: bcm2835: Fix controller unregister order
    - ovl: initialize error in ovl_copy_xattr
    - proc: Use new_inode not new_inode_pseudo
    - video: fbdev: w100fb: Fix a potential double free.
    - KVM: nSVM: leave ASID aside in copy_vmcb_control_area
    - KVM: nVMX: Consult only the "basic" exit reason when routing nested exit
    - KVM: arm64: Make vcpu_cp1x() work on Big Endian hosts
    - ath9k: Fix use-after-free Read in ath9k_wmi_ctrl_rx
    - ath9k: Fix use-after-free Write in ath9k_htc_rx_msg
    - ath9x: Fix stack-out-of-bounds Write in ath9k_hif_usb_rx_cb
    - ath9k: Fix general protection fault in ath9k_hif_usb_rx_cb
    - Smack: slab-out-of-bounds in vsscanf
    - mm/slub: fix a memory leak in sysfs_slab_add()
    - fat: don't allow to mount if the FAT length == 0
    - can: kvaser_usb: kvaser_usb_leaf: Fix some info-leaks to USB devices
    - spi: dw: Zero DMA Tx and Rx configurations on stack
    - Bluetooth: Add SCO fallback for invalid LMP parameters error
    - kgdb: Prevent infinite recursive entries to the debugger
    - spi: dw: Enable interrupts in accordance with DMA xfer mode
    - clocksource...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-oem-osp1 - 5.0.0-1065.70

---------------
linux-oem-osp1 (5.0.0-1065.70) bionic; urgency=medium

  * bionic/linux-oem-osp1: 5.0.0-1065.70 -proposed tracker (LP: #1887090)

  [ Ubuntu: 5.0.0-58.62 ]

  * disco/linux: 5.0.0-58.62 -proposed tracker (LP: #1887094)
  * linux 4.15.0-109-generic network DoS regression vs -108 (LP: #1886668)
    - SAUCE: Revert "netprio_cgroup: Fix unlimited memory leak of v2 cgroups"

linux-oem-osp1 (5.0.0-1064.69) bionic; urgency=medium

  * bionic/linux-oem-osp1: 5.0.0-1064.69 -proposed tracker (LP: #1885656)

  * Update lockdown patches (LP: #1884159)
    - [Config] Update kexec signature config options

  [ Ubuntu: 5.0.0-57.61 ]

  * disco/linux: 5.0.0-57.61 -proposed tracker (LP: #1885660)
  * seccomp_bpf fails on powerpc (LP: #1885757)
    - SAUCE: selftests/seccomp: fix ptrace tests on powerpc
  * Disco update: upstream stable patchset 2020-06-29 (LP: #1885629)
    - ipv6: fix IPV6_ADDRFORM operation logic
    - net_failover: fixed rollback in net_failover_open()
    - bridge: Avoid infinite loop when suppressing NS messages with invalid
      options
    - vxlan: Avoid infinite loop when suppressing NS messages with invalid options
    - tun: correct header offsets in napi frags mode
    - btrfs: Detect unbalanced tree with empty leaf before crashing btree
      operations
    - crypto: talitos - fix ECB and CBC algs ivsize
    - Input: mms114 - fix handling of mms345l
    - ARM: 8977/1: ptrace: Fix mask for thumb breakpoint hook
    - sched/fair: Don't NUMA balance for kthreads
    - Input: synaptics - add a second working PNP_ID for Lenovo T470s
    - drivers/net/ibmvnic: Update VNIC protocol version reporting
    - powerpc/xive: Clear the page tables for the ESB IO mapping
    - ath9k_htc: Silence undersized packet warnings
    - RDMA/uverbs: Make the event_queue fds return POLLERR when disassociated
    - x86/cpu/amd: Make erratum #1054 a legacy erratum
    - perf probe: Accept the instance number of kretprobe event
    - mm: add kvfree_sensitive() for freeing sensitive data objects
    - aio: fix async fsync creds
    - x86_64: Fix jiffies ODR violation
    - x86/PCI: Mark Intel C620 MROMs as having non-compliant BARs
    - x86/speculation: Prevent rogue cross-process SSBD shutdown
    - x86/reboot/quirks: Add MacBook6,1 reboot quirk
    - efi/efivars: Add missing kobject_put() in sysfs entry creation error path
    - ALSA: es1688: Add the missed snd_card_free()
    - ALSA: hda/realtek - add a pintbl quirk for several Lenovo machines
    - ALSA: usb-audio: Fix inconsistent card PM state after resume
    - ALSA: usb-audio: Add vendor, product and profile name for HP Thunderbolt
      Dock
    - ACPI: sysfs: Fix reference count leak in acpi_sysfs_add_hotplug_profile()
    - ACPI: CPPC: Fix reference count leak in acpi_cppc_processor_probe()
    - ACPI: GED: add support for _Exx / _Lxx handler methods
    - ACPI: PM: Avoid using power resources if there are none for D0
    - cgroup, blkcg: Prepare some symbols for module and !CONFIG_CGROUP usages
    - nilfs2: fix null pointer dereference at nilfs_segctor_do_construct()
    - spi: dw: Fix controller unregister order
...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 5.3.0-64.58

---------------
linux (5.3.0-64.58) eoan; urgency=medium

  * eoan/linux: 5.3.0-64.58 -proposed tracker (LP: #1887088)

  * linux 4.15.0-109-generic network DoS regression vs -108 (LP: #1886668)
    - SAUCE: Revert "netprio_cgroup: Fix unlimited memory leak of v2 cgroups"

linux (5.3.0-63.57) eoan; urgency=medium

  * eoan/linux: 5.3.0-63.57 -proposed tracker (LP: #1885495)

  * seccomp_bpf fails on powerpc (LP: #1885757)
    - SAUCE: selftests/seccomp: fix ptrace tests on powerpc

  * The thread level parallelism would be a bottleneck when searching for the
    shared pmd by using hugetlbfs (LP: #1882039)
    - hugetlbfs: take read_lock on i_mmap for PMD sharing

  * Eoan update: upstream stable patchset 2020-06-30 (LP: #1885775)
    - ipv6: fix IPV6_ADDRFORM operation logic
    - net_failover: fixed rollback in net_failover_open()
    - bridge: Avoid infinite loop when suppressing NS messages with invalid
      options
    - vxlan: Avoid infinite loop when suppressing NS messages with invalid options
    - tun: correct header offsets in napi frags mode
    - Input: mms114 - fix handling of mms345l
    - ARM: 8977/1: ptrace: Fix mask for thumb breakpoint hook
    - sched/fair: Don't NUMA balance for kthreads
    - Input: synaptics - add a second working PNP_ID for Lenovo T470s
    - drivers/net/ibmvnic: Update VNIC protocol version reporting
    - powerpc/xive: Clear the page tables for the ESB IO mapping
    - ath9k_htc: Silence undersized packet warnings
    - RDMA/uverbs: Make the event_queue fds return POLLERR when disassociated
    - x86/cpu/amd: Make erratum #1054 a legacy erratum
    - perf probe: Accept the instance number of kretprobe event
    - mm: add kvfree_sensitive() for freeing sensitive data objects
    - aio: fix async fsync creds
    - x86_64: Fix jiffies ODR violation
    - x86/PCI: Mark Intel C620 MROMs as having non-compliant BARs
    - x86/speculation: Prevent rogue cross-process SSBD shutdown
    - x86/reboot/quirks: Add MacBook6,1 reboot quirk
    - efi/efivars: Add missing kobject_put() in sysfs entry creation error path
    - ALSA: es1688: Add the missed snd_card_free()
    - ALSA: hda/realtek - add a pintbl quirk for several Lenovo machines
    - ALSA: usb-audio: Fix inconsistent card PM state after resume
    - ALSA: usb-audio: Add vendor, product and profile name for HP Thunderbolt
      Dock
    - ACPI: sysfs: Fix reference count leak in acpi_sysfs_add_hotplug_profile()
    - ACPI: CPPC: Fix reference count leak in acpi_cppc_processor_probe()
    - ACPI: GED: add support for _Exx / _Lxx handler methods
    - ACPI: PM: Avoid using power resources if there are none for D0
    - nilfs2: fix null pointer dereference at nilfs_segctor_do_construct()
    - spi: dw: Fix controller unregister order
    - spi: bcm2835aux: Fix controller unregister order
    - spi: bcm-qspi: when tx/rx buffer is NULL set to 0
    - PM: runtime: clk: Fix clk_pm_runtime_get() error path
    - crypto: cavium/nitrox - Fix 'nitrox_get_first_device()' when ndevlist is
      fully iterated
    - ALSA: pcm: disallow linking stream to itself
    - x86/{mce,mm}: Unmap the entire page if the who...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 5.4.0-42.46

---------------
linux (5.4.0-42.46) focal; urgency=medium

  * focal/linux: 5.4.0-42.46 -proposed tracker (LP: #1887069)

  * linux 4.15.0-109-generic network DoS regression vs -108 (LP: #1886668)
    - SAUCE: Revert "netprio_cgroup: Fix unlimited memory leak of v2 cgroups"

linux (5.4.0-41.45) focal; urgency=medium

  * focal/linux: 5.4.0-41.45 -proposed tracker (LP: #1885855)

  * Packaging resync (LP: #1786013)
    - update dkms package versions

  * CVE-2019-19642
    - kernel/relay.c: handle alloc_percpu returning NULL in relay_open

  * CVE-2019-16089
    - SAUCE: nbd_genl_status: null check for nla_nest_start

  * CVE-2020-11935
    - aufs: do not call i_readcount_inc()

  * ip_defrag.sh in net from ubuntu_kernel_selftests failed with 5.0 / 5.3 / 5.4
    kernel (LP: #1826848)
    - selftests: net: ip_defrag: ignore EPERM

  * Update lockdown patches (LP: #1884159)
    - 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

 -- Khalid Elmously <email address hidden> Thu, 09 Jul 2020 19:50:26 -0400

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-oem-osp1 - 5.0.0-1065.70

---------------
linux-oem-osp1 (5.0.0-1065.70) bionic; urgency=medium

  * bionic/linux-oem-osp1: 5.0.0-1065.70 -proposed tracker (LP: #1887090)

  [ Ubuntu: 5.0.0-58.62 ]

  * disco/linux: 5.0.0-58.62 -proposed tracker (LP: #1887094)
  * linux 4.15.0-109-generic network DoS regression vs -108 (LP: #1886668)
    - SAUCE: Revert "netprio_cgroup: Fix unlimited memory leak of v2 cgroups"

linux-oem-osp1 (5.0.0-1064.69) bionic; urgency=medium

  * bionic/linux-oem-osp1: 5.0.0-1064.69 -proposed tracker (LP: #1885656)

  * Update lockdown patches (LP: #1884159)
    - [Config] Update kexec signature config options

  [ Ubuntu: 5.0.0-57.61 ]

  * disco/linux: 5.0.0-57.61 -proposed tracker (LP: #1885660)
  * seccomp_bpf fails on powerpc (LP: #1885757)
    - SAUCE: selftests/seccomp: fix ptrace tests on powerpc
  * Disco update: upstream stable patchset 2020-06-29 (LP: #1885629)
    - ipv6: fix IPV6_ADDRFORM operation logic
    - net_failover: fixed rollback in net_failover_open()
    - bridge: Avoid infinite loop when suppressing NS messages with invalid
      options
    - vxlan: Avoid infinite loop when suppressing NS messages with invalid options
    - tun: correct header offsets in napi frags mode
    - btrfs: Detect unbalanced tree with empty leaf before crashing btree
      operations
    - crypto: talitos - fix ECB and CBC algs ivsize
    - Input: mms114 - fix handling of mms345l
    - ARM: 8977/1: ptrace: Fix mask for thumb breakpoint hook
    - sched/fair: Don't NUMA balance for kthreads
    - Input: synaptics - add a second working PNP_ID for Lenovo T470s
    - drivers/net/ibmvnic: Update VNIC protocol version reporting
    - powerpc/xive: Clear the page tables for the ESB IO mapping
    - ath9k_htc: Silence undersized packet warnings
    - RDMA/uverbs: Make the event_queue fds return POLLERR when disassociated
    - x86/cpu/amd: Make erratum #1054 a legacy erratum
    - perf probe: Accept the instance number of kretprobe event
    - mm: add kvfree_sensitive() for freeing sensitive data objects
    - aio: fix async fsync creds
    - x86_64: Fix jiffies ODR violation
    - x86/PCI: Mark Intel C620 MROMs as having non-compliant BARs
    - x86/speculation: Prevent rogue cross-process SSBD shutdown
    - x86/reboot/quirks: Add MacBook6,1 reboot quirk
    - efi/efivars: Add missing kobject_put() in sysfs entry creation error path
    - ALSA: es1688: Add the missed snd_card_free()
    - ALSA: hda/realtek - add a pintbl quirk for several Lenovo machines
    - ALSA: usb-audio: Fix inconsistent card PM state after resume
    - ALSA: usb-audio: Add vendor, product and profile name for HP Thunderbolt
      Dock
    - ACPI: sysfs: Fix reference count leak in acpi_sysfs_add_hotplug_profile()
    - ACPI: CPPC: Fix reference count leak in acpi_cppc_processor_probe()
    - ACPI: GED: add support for _Exx / _Lxx handler methods
    - ACPI: PM: Avoid using power resources if there are none for D0
    - cgroup, blkcg: Prepare some symbols for module and !CONFIG_CGROUP usages
    - nilfs2: fix null pointer dereference at nilfs_segctor_do_construct()
    - spi: dw: Fix controller unregister order
...