This bug was fixed in the package linux - 5.8.0-49.55
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linux (5.8.0-49.55) groovy; urgency=medium
* groovy/linux: 5.8.0-49.55 -proposed tracker (LP: #1921053)
* selftests: bpf verifier fails after sanitize_ptr_alu fixes (LP: #1920995)
- bpf: Simplify alu_limit masking for pointer arithmetic
- bpf: Add sanity check for upper ptr_limit
- bpf, selftests: Fix up some test_verifier cases for unprivileged
* Packaging resync (LP: #1786013)
- update dkms package versions
* improper memcg accounting causes NULL pointer derefs (LP: #1918668)
- SAUCE: Revert "mm: memcg/slab: optimize objcg stock draining"
* kernel: Enable CONFIG_BPF_LSM on Ubuntu (LP: #1905975)
- [Config] Enable CONFIG_BPF_LSM
* Groovy update: upstream stable patchset 2021-03-10 (LP: #1918516)
- gpio: mvebu: fix pwm .get_state period calculation
- HID: wacom: Correct NULL dereference on AES pen proximity
- media: v4l2-subdev.h: BIT() is not available in userspace
- RDMA/vmw_pvrdma: Fix network_hdr_type reported in WC
- kernel/io_uring: cancel io_uring before task works
- io_uring: dont kill fasync under completion_lock
- objtool: Don't fail on missing symbol table
- mm/page_alloc: add a missing mm_page_alloc_zone_locked() tracepoint
- mm: fix a race on nr_swap_pages
- tools: Factor HOSTCC, HOSTLD, HOSTAR definitions
- iwlwifi: provide gso_type to GSO packets
- tty: avoid using vfs_iocb_iter_write() for redirected console writes
- ACPI: sysfs: Prefer "compatible" modalias
- kernel: kexec: remove the lock operation of system_transition_mutex
- ALSA: hda/realtek: Enable headset of ASUS B1400CEPE with ALC256
- ALSA: hda/via: Apply the workaround generically for Clevo machines
- parisc: Enable -mlong-calls gcc option by default when !CONFIG_MODULES
- media: cec: add stm32 driver
- media: hantro: Fix reset_raw_fmt initialization
- media: rc: fix timeout handling after switch to microsecond durations
- media: rc: ite-cir: fix min_timeout calculation
- media: rc: ensure that uevent can be read directly after rc device
register
- ARM: dts: tbs2910: rename MMC node aliases
- ARM: dts: ux500: Reserve memory carveouts
- ARM: dts: imx6qdl-gw52xx: fix duplicate regulator naming
- wext: fix NULL-ptr-dereference with cfg80211's lack of commit()
- ASoC: AMD Renoir - refine DMI entries for some Lenovo products
- drm/i915: Always flush the active worker before returning from the wait
- drm/i915/gt: Always try to reserve GGTT address 0x0
- drivers/nouveau/kms/nv50-: Reject format modifiers for cursor planes
- net: usb: qmi_wwan: added support for Thales Cinterion PLSx3 modem family
- s390: uv: Fix sysfs max number of VCPUs reporting
- s390/vfio-ap: No need to disable IRQ after queue reset
- PM: hibernate: flush swap writer after marking
- x86/entry: Emit a symbol for register restoring thunk
- efi/apple-properties: Reinstate support for boolean properties
- drivers: soc: atmel: Avoid calling at91_soc_init on non AT91 SoCs
- drivers: soc: atmel: add null entry at the end of at91_soc_allowed_list[]
- btrfs: fix possible free space tree corruption with online conversion
- KVM: x86/pmu: Fix HW_REF_CPU_CYCLES event pseudo-encoding in
intel_arch_events[]
- KVM: x86/pmu: Fix UBSAN shift-out-of-bounds warning in intel_pmu_refresh()
- KVM: nVMX: Sync unsync'd vmcs02 state to vmcs12 on migration
- KVM: x86: get smi pending status correctly
- KVM: Forbid the use of tagged userspace addresses for memslots
- xen: Fix XenStore initialisation for XS_LOCAL
- leds: trigger: fix potential deadlock with libata
- arm64: dts: broadcom: Fix USB DMA address translation for Stingray
- mt7601u: fix kernel crash unplugging the device
- mt7601u: fix rx buffer refcounting
- iwlwifi: Fix IWL_SUBDEVICE_NO_160 macro to use the correct bit.
- drm/i915/gt: Clear CACHE_MODE prior to clearing residuals
- drm/i915/pmu: Don't grab wakeref when enabling events
- net/mlx5e: Fix IPSEC stats
- ARM: dts: imx6qdl-kontron-samx6i: fix pwms for lcd-backlight
- drm/nouveau/svm: fail NOUVEAU_SVM_INIT ioctl on unsupported devices
- drm/i915: Check for all subplatform bits
- drm/i915/selftest: Fix potential memory leak
- uapi: fix big endian definition of ipv6_rpl_sr_hdr
- KVM: Documentation: Fix spec for KVM_CAP_ENABLE_CAP_VM
- tee: optee: replace might_sleep with cond_resched
- xen-blkfront: allow discard-* nodes to be optional
- clk: mmp2: fix build without CONFIG_PM
- clk: qcom: gcc-sm250: Use floor ops for sdcc clks
- ARM: imx: build suspend-imx6.S with arm instruction set
- ARM: zImage: atags_to_fdt: Fix node names on added root nodes
- netfilter: nft_dynset: add timeout extension to template
- Revert "RDMA/mlx5: Fix devlink deadlock on net namespace deletion"
- xfrm: Fix oops in xf
