Ubuntu
linux-aws package

aws: fix hibernation issues on c5.18xlarge

Bug #1918694 reported by Andrea Righi on 2021-03-11

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	linux-aws (Ubuntu)	New	Undecided	Unassigned
	Focal	Fix Released	Undecided	Unassigned

Bug Description

[Impact]

Hibernation is still unreliable on c5.18xlarge instances, usually the system hibernates correctly, but on resume it either perfoms a regular reboot instead of resuming from hibernation, or the system is completely stuck after the hibernated kernel is loaded in memory (more exactly the system is stuck when the resume callbacks of the hibernated kernel are executed).

[Test plan]

Create a c5.18xlarge instance, run the memory stress test script (the same test script that we are using to stress test hibernation), trigger the hibernate event, trigger the resume event. Repeat a couple of times and the problem is very likely to happen.

[Fix]

Amazon pointed out two fixes that should address both issues:
1) upstream patch "PM: hibernate: flush swap writer after marking": this prevents the regular reboot issue, because it ensures that the I/O is always flushed after, not before, writing the hibernation signature

2) we need to reserve more space for HVC_BOOT_ARRAY_SIZE: this is a temporary solution (SAUCE PATCH for now), suggested by Amazon, they are working on a proper (more elegant) fix, but doubling the size of HVC_BOOT_ARRAY_SIZE seems to resolve the problem, we have tested this change extensively in the AWS cloud and it seems to prevent the "system stuck on resume" issue from happening

[Regression potential]

The first patch is touching only the hibernation code, so potential regressions could be experienced only in the hibernation scenario. The second patch is more like a hack at the moment and it's affecting kvmclock. Increasing the size of HVC_BOOT_ARRAY_SIZE could potentially introduce regressions on small sized kvm systems and a better solution would be to allocate the array hv_clock_boot dynamically. And this is actually the proper fix that Amazon is currently working on. When the fix will be published upstream we should apply that one and drop this SAUCE PATCH.

Tags:

Tim Gardner (timg-tpi) on 2021-03-19

Changed in linux-aws (Ubuntu Focal):
status:	New → Fix Committed

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2021-04-10:

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!

tags:

added: verification-needed-focal

Revision history for this message

Launchpad Janitor (janitor) wrote on 2021-04-12:

Download full text (21.8 KiB)

This bug was fixed in the package linux-aws - 5.4.0-1043.45

---------------
linux-aws (5.4.0-1043.45) focal; urgency=medium

* focal/linux-aws: 5.4.0-1043.45 -proposed tracker (LP: #1923247)

* linux-aws 5.4.0-1042.44 has incorrect DKMS versions (LP: #1923245)
- [Packaging] Fix incorrect DKMS versions

linux-aws (5.4.0-1042.44) focal; urgency=medium

* focal/linux-aws: 5.4.0-1042.44 -proposed tracker (LP: #1921016)

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

* Enforce CONFIG_DRM_BOCHS=m (LP: #1916290)
- [Config] aws: Enforce CONFIG_DRM_BOCHS=m

* aws: fix hibernation issues on c5.18xlarge (LP: #1918694)
- SAUCE: aws: kvm: double the size of hv_clock_boot

  * aws: update Xen hibernation patch set (LP: #1913410)
    - Revert "UBUNTU: SAUCE: xen-netfront: prevent unnecessary close on hibernate"
    - Revert "UBUNTU: SAUCE: xen: Update sched clock offset to avoid system
      instability in hibernation"
    - Revert "UBUNTU: SAUCE: xen: Introduce wrapper for save/restore sched clock
      offset"
    - Revert "UBUNTU: SAUCE: x86/xen: save and restore steal clock"
    - Revert "UBUNTU: SAUCE: xen/time: introduce xen_{save,restore}_steal_clock"
    - Revert "UBUNTU: SAUCE: xen-netfront: add callbacks for PM suspend and
      hibernation"
    - Revert "UBUNTU: SAUCE: xen-blkfront: add callbacks for PM suspend and
      hibernation"
    - Revert "UBUNTU: SAUCE: genirq: Shutdown irq chips in suspend/resume during
      hibernation"
    - Revert "UBUNTU: SAUCE: x86/xen: add system core suspend and resume
      callbacks"
    - Revert "UBUNTU: SAUCE: x86/xen: Introduce new function to map
      HYPERVISOR_shared_info on Resume"
    - Revert "UBUNTU: SAUCE: xenbus: add freeze/thaw/restore callbacks support"
    - Revert "UBUNTU: SAUCE: xen/manage: keep track of the on-going suspend mode"
    - SAUCE: xen/manage: keep track of the on-going suspend mode
    - SAUCE: xen/manage: introduce helper function to know the on-going suspend
      mode
    - SAUCE: xenbus: add freeze/thaw/restore callbacks support
    - SAUCE: x86/xen: Introduce new function to map HYPERVISOR_shared_info on
      Resume
    - SAUCE: x86/xen: add system core suspend and resume callbacks
    - SAUCE: xen-blkfront: add callbacks for PM suspend and hibernation
    - SAUCE: xen-netfront: add callbacks for PM suspend and hibernation support
    - SAUCE: xen/time: introduce xen_{save,restore}_steal_clock
    - SAUCE: x86/xen: save and restore steal clock
    - SAUCE: xen/events: add xen_shutdown_pirqs helper function
    - SAUCE: x86/xen: close event channels for PIRQs in system core suspend
      callback
    - SAUCE: xen-blkfront: add 'persistent_grants' parameter
    - SAUCE: Revert "xen: dont fiddle with event channel masking in
      suspend/resume"
    - SAUCE: xen-blkfront: Fixed blkfront_restore to remove a call to negotiate_mq
    - SAUCE: block: xen-blkfront: consider new dom0 features on restore
    - SAUCE: xen: restore pirqs on resume from hibernation.
    - SAUCE: xen: Only restore the ACPI SCI interrupt in xen_restore_pirqs.
    - SAUCE: xen-netfront: call netif_device_attach on resume
    - SAUCE: xen: Restore xen-pirqs o...

This bug was fixed in the package linux-aws - 5.4.0-1043.45

---------------
linux-aws (5.4.0-1043.45) focal; urgency=medium

* focal/linux-aws: 5.4.0-1043.45 -proposed tracker (LP: #1923247)

* linux-aws 5.4.0-1042.44 has incorrect DKMS versions (LP: #1923245)
    - [Packaging] Fix incorrect DKMS versions

linux-aws (5.4.0-1042.44) focal; urgency=medium

* focal/linux-aws: 5.4.0-1042.44 -proposed tracker (LP: #1921016)

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

* Enforce CONFIG_DRM_BOCHS=m (LP: #1916290)
    - [Config] aws: Enforce CONFIG_DRM_BOCHS=m

* aws: fix hibernation issues on c5.18xlarge (LP: #1918694)
    - SAUCE: aws: kvm: double the size of hv_clock_boot

* aws: update patch to batch hibernate and resume IO requests (LP: #1902864)
    - Revert "UBUNTU: SAUCE: [aws] PM / hibernate: Speed up hibernation by
      batching requests"
    - PM: hibernate: Batch hibernate and resume IO requests

[ Ubuntu: 5.4.0-71.79 ]

* focal/linux: 5.4.0-71.79 -proposed tracker (LP: #1921040)
  * 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
  * Fix missing HDMI/DP audio on NVidia card after S3 (LP: #1918228)
    - ALSA: hda/hdmi: Reduce hda_jack_tbl lookup at unsol event handling
    - ALSA: hda/hdmi: Don't use standard hda_jack for generic HDMI jacks
    - ALSA: hda/hdmi: Move runtime PM resume into hdmi_present_sense_via_verbs()
    - ALSA: hda/hdmi: Move ELD parse and jack reporting into update_eld()
  * Focal update: v5.4.101 upstream stable release (LP: #1918170)
    - HID: make arrays usage and value to be the same
    - USB: quirks: sort quirk entries
    - usb: quirks: add quirk to start video capture on ELMO L-12F document camera
      reliable
    - ntfs: check for valid standard information attribute
    - arm64: tegra: Add power-domain for Tegra210 HDA
    - scripts: use pkg-config to locate libcrypto
    - scripts: set proper OpenSSL include dir also for sign-file
    - mm: unexport follow_pte_pmd
    - mm: simplify follow_pte{,pmd}
    - KVM: do not assume PTE is writable after follow_pfn
    - mm: provide a saner PTE walking API for modules
    - KVM: Use kvm_pfn_t for local PFN variable in hva_to_pfn_remapped()
    - NET: usb: qmi_wwan: Adding support for Cinterion MV31
    - cxgb4: Add new T6 PCI device id 0x6092
    - cifs: Set CIFS_MOUNT_USE_PREFIX_PATH flag on setting cifs_sb->prepath.
    - scripts/recordmcount.pl: support big endian for ARCH sh
    - Linux 5.4.101
  * Focal update: v5.4.100 upstream stable release (LP: #1918168)
    - KVM: SEV: fix double locking due to incorrect backport
    - net: qrtr: Fix port ID for control messages
    - net: bridge: Fix a warning when del bridge sysfs
    - Xen/x86: don't bail early from clear_foreign_p2m_mapping()
    - Xen/x86: also check kernel mapping in set_foreign_p2m_mapping()
    - Xen/gntdev: correct dev_bus_addr handling in gntdev_map_grant_pages()
    - Xen/gntdev: correct error checking in gntdev_map_grant_pages()
    - xen/arm: don't ignore return errors from set_phys_to_machine
    - xen-blkback: don't "handle" error by BUG()
    - xen-netback: don't "handle" error by BUG()
    - xen-scsiback: don't "handle" error by BUG()
    - xen-blkback: fix error handling in xen_blkbk_map()
    - media: pwc: Use correct device for DMA
    - btrfs: fix backport of 2175bf57dc952 in 5.4.95
    - Linux 5.4.100
  * Focal update: v5.4.99 upstream stable release (LP: #1918167)
    - gpio: ep93xx: fix BUG_ON port F usage
    - gpio: ep93xx: Fix single irqchip with multi gpiochips
    - tracing: Do not count ftrace events in top level enable output
    - tracing: Check length before giving out the filter buffer
    - arm/xen: Don't probe xenbus as part of an early initcall
    - cgroup: fix psi monitor for root cgroup
    - arm64: dts: rockchip: Fix PCIe DT properties on rk3399
    - arm64: dts: qcom: sdm845: Reserve LPASS clocks in gcc
    - ARM: OMAP2+: Fix suspcious RCU usage splats for omap_enter_idle_coupled
    - platform/x86: hp-wmi: Disable tablet-mode reporting by default
    - ovl: perform vfs_getxattr() with mounter creds
    - cap: fix conversions on getxattr
    - ovl: skip getxattr of security labels
    - nvme-pci: ignore the subsysem NQN on Phison E16
    - drm/amd/display: Add more Clock Sources to DCN2.1
    - drm/amd/display: Fix dc_sink kref count in emulated_link_detect
    - drm/amd/display: Free atomic state after drm_atomic_commit
    - drm/amd/display: Decrement refcount of dc_sink before reassignment
    - riscv: virt_addr_valid must check the address belongs to linear mapping
    - bfq-iosched: Revert "bfq: Fix computation of shallow depth"
    - ARM: dts: lpc32xx: Revert set default clock rate of HCLK PLL
    - ARM: ensure the signal page contains defined contents
    - ARM: kexec: fix oops after TLB are invalidated
    - vmlinux.lds.h: Create section for protection against instrumentation
    - lkdtm: don't move ctors to .rodata
    - mt76: dma: fix a possible memory leak in mt76_add_fragment()
    - drm/vc4: hvs: Fix buffer overflow with the dlist handling
    - bpf: Check for integer overflow when using roundup_pow_of_two()
    - netfilter: xt_recent: Fix attempt to update deleted entry
    - netfilter: nftables: fix possible UAF over chains from packet path in netns
    - netfilter: flowtable: fix tcp and udp header checksum update
    - xen/netback: avoid race in xenvif_rx_ring_slots_available()
    - net: enetc: initialize the RFS and RSS memories
    - selftests: txtimestamp: fix compilation issue
    - net: stmmac: set TxQ mode back to DCB after disabling CBS
    - ibmvnic: Clear failover_pending if unable to schedule
    - netfilter: conntrack: skip identical origin tuple in same zone only
    - x86/build: Disable CET instrumentation in the kernel for 32-bit too
    - net: hns3: add a check for queue_id in hclge_reset_vf_queue()
    - firmware_loader: align .builtin_fw to 8
    - drm/sun4i: tcon: set sync polarity for tcon1 channel
    - drm/sun4i: Fix H6 HDMI PHY configuration
    - drm/sun4i: dw-hdmi: Fix max. frequency for H6
    - clk: sunxi-ng: mp: fix parent rate change flag check
    - i2c: stm32f7: fix configuration of the digital filter
    - h8300: fix PREEMPTION build, TI_PRE_COUNT undefined
    - usb: dwc3: ulpi: fix checkpatch warning
    - usb: dwc3: ulpi: Replace CPU-based busyloop with Protocol-based one
    - rxrpc: Fix clearance of Tx/Rx ring when releasing a call
    - udp: fix skb_copy_and_csum_datagram with odd segment sizes
    - net: dsa: call teardown method on probe failure
    - net: gro: do not keep too many GRO packets in napi->rx_list
    - net: fix iteration for sctp transport seq_files
    - net/vmw_vsock: improve locking in vsock_connect_timeout()
    - net: watchdog: hold device global xmit lock during tx disable
    - vsock/virtio: update credit only if socket is not closed
    - vsock: fix locking in vsock_shutdown()
    - net/rds: restrict iovecs length for RDS_CMSG_RDMA_ARGS
    - net/qrtr: restrict user-controlled length in qrtr_tun_write_iter()
    - ovl: expand warning in ovl_d_real()
    - Linux 5.4.99
  * Focal update: v5.4.98 upstream stable release (LP: #1918158)
    - tracing/kprobe: Fix to support kretprobe events on unloaded modules
    - af_key: relax availability checks for skb size calculation
    - regulator: core: avoid regulator_resolve_supply() race condition
    - mac80211: 160MHz with extended NSS BW in CSA
    - ASoC: Intel: Skylake: Zero snd_ctl_elem_value
    - chtls: Fix potential resource leak
    - pNFS/NFSv4: Try to return invalid layout in pnfs_layout_process()
    - ASoC: ak4458: correct reset polarity
    - iwlwifi: mvm: skip power command when unbinding vif during CSA
    - iwlwifi: mvm: take mutex for calling iwl_mvm_get_sync_time()
    - iwlwifi: pcie: add a NULL check in iwl_pcie_txq_unmap
    - iwlwifi: pcie: fix context info memory leak
    - iwlwifi: mvm: invalidate IDs of internal stations at mvm start
    - iwlwifi: mvm: guard against device removal in reprobe
    - SUNRPC: Move simple_get_bytes and simple_get_netobj into private header
    - SUNRPC: Handle 0 length opaque XDR object data properly
    - i2c: mediatek: Move suspend and resume handling to NOIRQ phase
    - blk-cgroup: Use cond_resched() when destroy blkgs
    - regulator: Fix lockdep warning resolving supplies
    - Fix unsynchronized access to sev members through svm_register_enc_region
    - squashfs: add more sanity checks in id lookup
    - squashfs: add more sanity checks in inode lookup
    - squashfs: add more sanity checks in xattr id lookup
    - Linux 5.4.98
  * Enforce CONFIG_DRM_BOCHS=m (LP: #1916290)
    - [Config] Enforce CONFIG_DRM_BOCHS=m
  * powerpc/eeh-basic.sh in kselftest make P8 node stopped working
    (LP: #1916468)
    - selftests/eeh: Skip ahci adapters
  * Focal update: v5.4.97 upstream stable release (LP: #1916066)
    - USB: serial: cp210x: add pid/vid for WSDA-200-USB
    - USB: serial: cp210x: add new VID/PID for supporting Teraoka AD2000
    - USB: serial: option: Adding support for Cinterion MV31
    - arm64: dts: qcom: c630: keep both touchpad devices enabled
    - arm64: dts: amlogic: meson-g12: Set FL-adj property value
    - arm64: dts: rockchip: fix vopl iommu irq on px30
    - bpf, cgroup: Fix optlen WARN_ON_ONCE toctou
    - bpf, cgroup: Fix problematic bounds check
    - um: virtio: free vu_dev only with the contained struct device
    - rxrpc: Fix deadlock around release of dst cached on udp tunnel
    - arm64: dts: ls1046a: fix dcfg address range
    - igc: set the default return value to -IGC_ERR_NVM in igc_write_nvm_srwr
    - igc: check return value of ret_val in igc_config_fc_after_link_up
    - i40e: Revert "i40e: don't report link up for a VF who hasn't enabled queues"
    - net/mlx5: Fix leak upon failure of rule creation
    - net: lapb: Copy the skb before sending a packet
    - net: mvpp2: TCAM entry enable should be written after SRAM data
    - r8169: fix WoL on shutdown if CONFIG_DEBUG_SHIRQ is set
    - ARM: dts: sun7i: a20: bananapro: Fix ethernet phy-mode
    - nvmet-tcp: fix out-of-bounds access when receiving multiple h2cdata PDUs
    - memblock: do not start bottom-up allocations with kernel_end
    - USB: gadget: legacy: fix an error code in eth_bind()
    - USB: usblp: don't call usb_set_interface if there's a single alt
    - usb: renesas_usbhs: Clear pipe running flag in usbhs_pkt_pop()
    - usb: dwc2: Fix endpoint direction check in ep_from_windex
    - usb: dwc3: fix clock issue during resume in OTG mode
    - usb: xhci-mtk: fix unreleased bandwidth data
    - usb: xhci-mtk: skip dropping bandwidth of unchecked endpoints
    - usb: xhci-mtk: break loop when find the endpoint to drop
    - usb: host: xhci-plat: add priv quirk for skip PHY initialization
    - ovl: fix dentry leak in ovl_get_redirect
    - mac80211: fix station rate table updates on assoc
    - fgraph: Initialize tracing_graph_pause at task creation
    - kretprobe: Avoid re-registration of the same kretprobe earlier
    - libnvdimm/dimm: Avoid race between probe and available_slots_show()
    - genirq/msi: Activate Multi-MSI early when MSI_FLAG_ACTIVATE_EARLY is set
    - xhci: fix bounce buffer usage for non-sg list case
    - cifs: report error instead of invalid when revalidating a dentry fails
    - smb3: Fix out-of-bounds bug in SMB2_negotiate()
    - smb3: fix crediting for compounding when only one request in flight
    - mmc: core: Limit retries when analyse of SDIO tuples fails
    - drm/amd/display: Revert "Fix EDID parsing after resume from suspend"
    - nvme-pci: avoid the deepest sleep state on Kingston A2000 SSDs
    - KVM: SVM: Treat SVM as unsupported when running as an SEV guest
    - KVM: x86: Update emulator context mode if SYSENTER xfers to 64-bit mode
    - ARM: footbridge: fix dc21285 PCI configuration accessors
    - mm: hugetlbfs: fix cannot migrate the fallocated HugeTLB page
    - mm: hugetlb: fix a race between freeing and dissolving the page
    - mm: hugetlb: fix a race between isolating and freeing page
    - mm: hugetlb: remove VM_BUG_ON_PAGE from page_huge_active
    - mm, compaction: move high_pfn to the for loop scope
    - mm: thp: fix MADV_REMOVE deadlock on shmem THP
    - x86/build: Disable CET instrumentation in the kernel
    - x86/apic: Add extra serialization for non-serializing MSRs
    - iwlwifi: mvm: don't send RFH_QUEUE_CONFIG_CMD with no queues
    - Input: xpad - sync supported devices with fork on GitHub
    - iommu/vt-d: Do not use flush-queue when caching-mode is on
    - md: Set prev_flush_start and flush_bio in an atomic way
    - neighbour: Prevent a dead entry from updating gc_list
    - net: ip_tunnel: fix mtu calculation
    - net: dsa: mv88e6xxx: override existent unicast portvec in port_fdb_add
    - net: sched: replaced invalid qdisc tree flush helper in qdisc_replace
    - usb: host: xhci: mvebu: make USB 3.0 PHY optional for Armada 3720
    - Linux 5.4.97
  * Focal update: v5.4.96 upstream stable release (LP: #1916061)
    - net: dsa: bcm_sf2: put device node before return
    - net: switchdev: don't set port_obj_info->handled true when -EOPNOTSUPP
    - ibmvnic: Ensure that CRQ entry read are correctly ordered
    - Revert "Revert "block: end bio with BLK_STS_AGAIN in case of non-mq devs and
      REQ_NOWAIT""
    - ACPI: thermal: Do not call acpi_thermal_check() directly
    - arm64: Fix kernel address detection of __is_lm_address()
    - arm64: Do not pass tagged addresses to __is_lm_address()
    - tcp: make TCP_USER_TIMEOUT accurate for zero window probes
    - btrfs: backref, only collect file extent items matching backref offset
    - btrfs: backref, don't add refs from shared block when resolving normal
      backref
    - btrfs: backref, only search backref entries from leaves of the same root
    - btrfs: backref, use correct count to resolve normal data refs
    - net_sched: gen_estimator: support large ewma log
    - phy: cpcap-usb: Fix warning for missing regulator_disable
    - platform/x86: touchscreen_dmi: Add swap-x-y quirk for Goodix touchscreen on
      Estar Beauty HD tablet
    - platform/x86: intel-vbtn: Support for tablet mode on Dell Inspiron 7352
    - x86: __always_inline __{rd,wr}msr()
    - scsi: scsi_transport_srp: Don't block target in failfast state
    - scsi: libfc: Avoid invoking response handler twice if ep is already
      completed
    - scsi: fnic: Fix memleak in vnic_dev_init_devcmd2
    - ASoC: SOF: Intel: hda: Resume codec to do jack detection
    - mac80211: fix fast-rx encryption check
    - scsi: ibmvfc: Set default timeout to avoid crash during migration
    - udf: fix the problem that the disc content is not displayed
    - nvme: check the PRINFO bit before deciding the host buffer length
    - selftests/powerpc: Only test lwm/stmw on big endian
    - drm/amd/display: Update dram_clock_change_latency for DCN2.1
    - drm/amd/display: Change function decide_dp_link_settings to avoid infinite
      looping
    - objtool: Don't fail on missing symbol table
    - kthread: Extract KTHREAD_IS_PER_CPU
    - workqueue: Restrict affinity change to rescuer
    - Linux 5.4.96
  * Focal update: v5.4.95 upstream stable release (LP: #1916056)
    - ICMPv6: Add ICMPv6 Parameter Problem, code 3 definition
    - IPv6: reply ICMP error if the first fragment don't include all headers
    - nbd: freeze the queue while we're adding connections
    - 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
    - media: rc: ensure that uevent can be read directly after rc device register
    - ARM: dts: imx6qdl-gw52xx: fix duplicate regulator naming
    - wext: fix NULL-ptr-dereference with cfg80211's lack of commit()
    - net: usb: qmi_wwan: added support for Thales Cinterion PLSx3 modem family
    - s390/vfio-ap: No need to disable IRQ after queue reset
    - PM: hibernate: flush swap writer after marking
    - 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
    - drm/nouveau/svm: fail NOUVEAU_SVM_INIT ioctl on unsupported devices
    - drm/i915: Check for all subplatform bits
    - tee: optee: replace might_sleep with cond_resched
    - xen-blkfront: allow discard-* nodes to be optional
    - ARM: imx: build suspend-imx6.S with arm instruction set
    - netfilter: nft_dynset: add timeout extension to template
    - xfrm: Fix oops in xfrm_replay_advance_bmp
    - xfrm: fix disable_xfrm sysctl when used on xfrm interfaces
    - selftests: xfrm: fix test return value override issue in xfrm_policy.sh
    - xfrm: Fix wraparound in xfrm_policy_addr_delta()
    - arm64: dts: ls1028a: fix the offset of the reset register
    - ARM: dts: imx6qdl-kontron-samx6i: fix i2c_lcd/cam default status
    - firmware: imx: select SOC_BUS to fix firmware build
    - RDMA/cxgb4: Fix the reported max_recv_sge value
    - ASoC: Intel: Skylake: skl-topology: Fix OOPs ib skl_tplg_complete
    - pNFS/NFSv4: Fix a layout segment leak in pnfs_layout_process()
    - iwlwifi: pcie: use jiffies for memory read spin time limit
    - iwlwifi: pcie: reschedule in long-running memory reads
    - mac80211: pause TX while changing interface type
    - i40e: acquire VSI pointer only after VF is initialized
    - igc: fix link speed advertising
    - net/mlx5: Fix memory leak on flow table creation error flow
    - net/mlx5e: E-switch, Fix rate calculation for overflow
    - net/mlx5e: Reduce tc unsupported key print level
    - can: dev: prevent potential information leak in can_fill_info()
    - nvme-multipath: Early exit if no path is available
    - selftests: forwarding: Specify interface when invoking mausezahn
    - iommu/vt-d: Gracefully handle DMAR units with no supported address widths
    - iommu/vt-d: Don't dereference iommu_device if IOMMU_API is not built
    - rxrpc: Fix memory leak in rxrpc_lookup_local
    - NFC: fix resource leak when target index is invalid
    - NFC: fix possible resource leak
    - ASoC: topology: Fix memory corruption in soc_tplg_denum_create_values()
    - team: protect features update by RCU to avoid deadlock
    - tcp: fix TLP timer not set when CA_STATE changes from DISORDER to OPEN
    - Linux 5.4.95

-- Tim Gardner <tim.gardner@canonical.com>  Fri, 09 Apr 2021 14:09:00 -0600

Changed in linux-aws (Ubuntu Focal):
status:	Fix Committed → Fix Released

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Ubuntulinux-aws package

aws: fix hibernation issues on c5.18xlarge

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