focal/linux-raspi: 5.4.0-1019.21 -proposed tracker

Hardware Certification have completed testing this -proposed kernel. No regressions were observed, results are available here:
Rpi2b-armhf: https://certification.canonical.com/hardware/201903-26933/submission/181713/
Rpi3b-arm64: https://certification.canonical.com/hardware/201811-26649/submission/181724/
Rpi3b-armhf: https://certification.canonical.com/hardware/201811-26649/submission/181727/
Rpi3a+-arm64: https://certification.canonical.com/hardware/201907-27199/submission/181707/
Rpi3a+-armhf: https://certification.canonical.com/hardware/201901-26785/submission/181711/
Rpi3b+-arm64: https://certification.canonical.com/hardware/201907-27198/submission/181705/
Rpi3b+-armhf: https://certification.canonical.com/hardware/201810-26542/submission/181704/
Rpi4b-1g-arm64: https://certification.canonical.com/hardware/201910-27407/submission/181908/
Rpi4b-1g-armhf: https://certification.canonical.com/hardware/201911-27471/submission/181712/
Rpi4b-2g-arm64: https://certification.canonical.com/hardware/201911-27507/submission/181701/
Rpi4b-2g-armhf: https://certification.canonical.com/hardware/201911-27506/submission/181699/
Rpi4b-4g-arm64: https://certification.canonical.com/hardware/201911-27456/submission/181702/
Rpi4b-4g-armhf: https://certification.canonical.com/hardware/201911-27455/submission/181709/
Rpi4b-8g-arm64: https://certification.canonical.com/hardware/202004-27866/submission/181700/
Rpi4b-8g-armhf: https://certification.canonical.com/hardware/202004-27865/submission/181909/
CM3-arm64: HW broken
CM3-armhf: HW broken
CM3+-arm64: https://certification.canonical.com/hardware/201908-27277/submission/181726/
CM3+-armhf: https://certification.canonical.com/hardware/201908-27277/submission/181730/

This bug was fixed in the package linux-raspi - 5.4.0-1019.21

---------------
linux-raspi (5.4.0-1019.21) focal; urgency=medium

  * focal/linux-raspi: 5.4.0-1019.21 -proposed tracker (LP: #1894636)

  * rpi3b+ becomes unresponsive after closing a program (LP: #1880388) // Build
    preemptible raspi kernels (LP: #1890808)
    - [Config] raspi: Switch from PREEMPT_VOLUNTARY to PREEMPT

  [ Ubuntu: 5.4.0-48.52 ]

  * focal/linux: 5.4.0-48.52 -proposed tracker (LP: #1894654)
  * mm/slub kernel oops on focal kernel 5.4.0-45 (LP: #1895109)
    - SAUCE: Revert "mm/slub: fix a memory leak in sysfs_slab_add()"
  * Packaging resync (LP: #1786013)
    - update dkms package versions
    - update dkms package versions
  * Introduce the new NVIDIA 450-server and the 450 UDA series (LP: #1887674)
    - [packaging] add signed modules for nvidia 450 and 450-server
  * [UBUNTU 20.04] zPCI attach/detach issues with PF/VF linking support
    (LP: #1892849)
    - s390/pci: fix zpci_bus_link_virtfn()
    - s390/pci: re-introduce zpci_remove_device()
    - s390/pci: fix PF/VF linking on hot plug
  * [UBUNTU 20.04] kernel: s390/cpum_cf,perf: changeDFLT_CCERROR counter name
    (LP: #1891454)
    - s390/cpum_cf, perf: change DFLT_CCERROR counter name
  * [UBUNTU 20.04] zPCI: Enabling of a reserved PCI function regression
    introduced by multi-function support (LP: #1891437)
    - s390/pci: fix enabling a reserved PCI function
  * CVE-2020-12888
    - vfio/type1: Support faulting PFNMAP vmas
    - vfio-pci: Fault mmaps to enable vma tracking
    - vfio-pci: Invalidate mmaps and block MMIO access on disabled memory
  * [Hyper-V] VSS and File Copy daemons intermittently fails to start
    (LP: #1891224)
    - [Packaging] Bind hv_vss_daemon startup to hv_vss device
    - [Packaging] bind hv_fcopy_daemon startup to hv_fcopy device
  * alsa/hdmi: support nvidia mst hdmi/dp audio (LP: #1867704)
    - ALSA: hda - Rename snd_hda_pin_sense to snd_hda_jack_pin_sense
    - ALSA: hda - Add DP-MST jack support
    - ALSA: hda - Add DP-MST support for non-acomp codecs
    - ALSA: hda - Add DP-MST support for NVIDIA codecs
    - ALSA: hda: hdmi - fix regression in connect list handling
    - ALSA: hda: hdmi - fix kernel oops caused by invalid PCM idx
    - ALSA: hda: hdmi - preserve non-MST PCM routing for Intel platforms
    - ALSA: hda: hdmi - Keep old slot assignment behavior for Intel platforms
    - ALSA: hda - Fix DP-MST support for NVIDIA codecs
  * Focal update: v5.4.60 upstream stable release (LP: #1892899)
    - smb3: warn on confusing error scenario with sec=krb5
    - genirq/affinity: Make affinity setting if activated opt-in
    - genirq/PM: Always unlock IRQ descriptor in rearm_wake_irq()
    - PCI: hotplug: ACPI: Fix context refcounting in acpiphp_grab_context()
    - PCI: Add device even if driver attach failed
    - PCI: qcom: Define some PARF params needed for ipq8064 SoC
    - PCI: qcom: Add support for tx term offset for rev 2.1.0
    - btrfs: allow use of global block reserve for balance item deletion
    - btrfs: free anon block device right after subvolume deletion
    - btrfs: don't allocate anonymous block device for user invisible roots
    - btrfs: r...

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