This bug was fixed in the package linux - 4.13.0-17.20
---------------
linux (4.13.0-17.20) artful; urgency=low
* linux: 4.13.0-17.20 -proposed tracker (LP: #1728927)
[ Seth Forshee ]
* thunderx2 ahci errata workaround needs additional delays (LP: #1724117)
- SAUCE: ahci: thunderx2: stop engine fix update
* usb 3-1: 2:1: cannot get freq at ep 0x1 (LP: #1708499)
- ALSA: usb-audio: Add sample rate quirk for Plantronics C310/C520-M
* Plantronics Blackwire C520-M - Cannot get freq at ep 0x1, 0x81
(LP: #1709282)
- ALSA: usb-audio: Add sample rate quirk for Plantronics C310/C520-M
* TSC_DEADLINE incorrectly disabled inside virtual guests (LP: #1724912)
- x86/apic: Silence "FW_BUG TSC_DEADLINE disabled due to Errata" on CPUs
without the feature
- x86/apic: Silence "FW_BUG TSC_DEADLINE disabled due to Errata" on
hypervisors
* x86/apic: Update TSC_DEADLINE quirk with additional SKX stepping
(LP: #1724612)
- x86/apic: Update TSC_DEADLINE quirk with additional SKX stepping
* [Artful] Add support for Dell/Wyse 3040 audio codec (LP: #1723916)
- SAUCE: ASoC: rt5670: Add support for Wyse 3040
* [Artful] Some Dell Monitors Doesn't Work Well with Dell/Wyse 3040
(LP: #1723915)
- SAUCE: drm/i915: Workaround for DP DPMS D3 on Dell monitor
* [Artful] Support headset mode for DELL WYSE (LP: #1723913)
- SAUCE: ALSA: hda/realtek - Add support headset mode for DELL WYSE
* Touchpad and TrackPoint Dose Not Work on Lenovo X1C6 and X280 (LP: #1723986)
- SAUCE: Input: synaptics-rmi4 - RMI4 can also use SMBUS version 3
- SAUCE: Input: synaptics - Lenovo X1 Carbon 5 should use SMBUS/RMI
- SAUCE: Input: synaptics - add Intertouch support on X1 Carbon 6th and X280
* Artful update to v4.13.8 stable release (LP: #1724669)
- USB: dummy-hcd: Fix deadlock caused by disconnect detection
- MIPS: math-emu: Remove pr_err() calls from fpu_emu()
- MIPS: bpf: Fix uninitialised target compiler error
- mei: always use domain runtime pm callbacks.
- dmaengine: edma: Align the memcpy acnt array size with the transfer
- dmaengine: ti-dma-crossbar: Fix possible race condition with dma_inuse
- NFS: Fix uninitialized rpc_wait_queue
- nfs/filelayout: fix oops when freeing filelayout segment
- HID: usbhid: fix out-of-bounds bug
- crypto: skcipher - Fix crash on zero-length input
- crypto: shash - Fix zero-length shash ahash digest crash
- KVM: MMU: always terminate page walks at level 1
- KVM: nVMX: fix guest CR4 loading when emulating L2 to L1 exit
- usb: renesas_usbhs: Fix DMAC sequence for receiving zero-length packet
- pinctrl/amd: Fix build dependency on pinmux code
- iommu/amd: Finish TLB flush in amd_iommu_unmap()
- device property: Track owner device of device property
- Revert "vmalloc: back off when the current task is killed"
- fs/mpage.c: fix mpage_writepage() for pages with buffers
- ALSA: usb-audio: Kill stray URB at exiting
- ALSA: seq: Fix use-after-free at creating a port
- ALSA: seq: Fix copy_from_user() call inside lock
- ALSA: caiaq: Fix stray URB at probe error path
- ALSA: line6: Fix NULL dereference at podhd_disconnect()
- ALSA: line6: Fix missing initialization before error path
- ALSA: line6: Fix leftover URB at error-path during probe
- drm/atomic: Unref duplicated drm_atomic_state in
drm_atomic_helper_resume()
- drm/i915/edp: Get the Panel Power Off timestamp after panel is off
- drm/i915: Read timings from the correct transcoder in
intel_crtc_mode_get()
- drm/i915/bios: parse DDI ports also for CHV for HDMI DDC pin and DP AUX
channel
- drm/i915: Use crtc_state_is_legacy_gamma in intel_color_check
- usb: gadget: configfs: Fix memory leak of interface directory data
- usb: gadget: composite: Fix use-after-free in
usb_composite_overwrite_options
- PCI: aardvark: Move to struct pci_host_bridge IRQ mapping functions
- Revert "PCI: tegra: Do not allocate MSI target memory"
- direct-io: Prevent NULL pointer access in submit_page_section
- fix unbalanced page refcounting in bio_map_user_iov
- more bio_map_user_iov() leak fixes
- bio_copy_user_iov(): don't ignore ->iov_offset
- perf script: Add missing separator for "-F ip,brstack" (and brstackoff)
- genirq/cpuhotplug: Enforce affinity setting on startup of managed irqs
- genirq/cpuhotplug: Add sanity check for effective affinity mask
- USB: serial: ftdi_sio: add id for Cypress WICED dev board
- USB: serial: cp210x: fix partnum regression
- USB: serial: cp210x: add support for ELV TFD500
- USB: serial: option: add support for TP-Link LTE module
- USB: serial: qcserial: add Dell DW5818, DW5819
- USB: serial: console: fix use-after-free on disconnect
- USB: serial: console: fix use-after-free after failed setup
- RAS/CEC: Use the right length for "cec_disable"
- x86/microcode: Do the family check first
- x86/alternatives: Fix alt_max_short macro to really be a max()
- KVM: nVMX: update last_nonleaf_level when initializing nested EPT
- Linux 4.13.8
* Artful update to v4.13.7 stable release (LP: #1724668)
- watchdog: Revert "iTCO_wdt: all versions count down twice"
- Linux 4.13.7
* libvirt - vnc port selection regression with newer kernels (LP: #1722702)
- net: set tb->fast_sk_family
- net: use inet6_rcv_saddr to compare sockets
- inet: fix improper empty comparison
* powerpc/64s: Add workaround for P9 vector CI load issue (LP: #1721070)
- powerpc/mce: Move 64-bit machine check code into mce.c
- powerpc/64s: Add workaround for P9 vector CI load issue
* Artful update to v4.13.6 stable release (LP: #1723145)
- imx-media-of: avoid uninitialized variable warning
- usb: dwc3: ep0: fix DMA starvation by assigning req->trb on ep0
- mlxsw: spectrum: Fix EEPROM access in case of SFP/SFP+
- net: bonding: Fix transmit load balancing in balance-alb mode if specified
by sysfs
- openvswitch: Fix an error handling path in
'ovs_nla_init_match_and_action()'
- mlxsw: spectrum: Prevent mirred-related crash on removal
- net: bonding: fix tlb_dynamic_lb default value
- net_sched: gen_estimator: fix scaling error in bytes/packets samples
- net: sched: fix use-after-free in tcf_action_destroy and tcf_del_walker
- sctp: potential read out of bounds in sctp_ulpevent_type_enabled()
- tcp: update skb->skb_mstamp more carefully
- bpf/verifier: reject BPF_ALU64|BPF_END
- tcp: fix data delivery rate
- udpv6: Fix the checksum computation when HW checksum does not apply
- ip6_gre: skb_push ipv6hdr before packing the header in ip6gre_header
- net: phy: Fix mask value write on gmii2rgmii converter speed register
- ip6_tunnel: do not allow loading ip6_tunnel if ipv6 is disabled in cmdline
- net/sched: cls_matchall: fix crash when used with classful qdisc
- 8139too: revisit napi_complete_done() usage
- bpf: do not disable/enable BH in bpf_map_free_id()
- tcp: fastopen: fix on syn-data transmit failure
- net: emac: Fix napi poll list corruption
- net: ipv6: fix regression of no RTM_DELADDR sent after DAD failure
- packet: hold bind lock when rebinding to fanout hook
- bpf: one perf event close won't free bpf program attached by another perf
event
- net: change skb->mac_header when Generic XDP calls adjust_head
- isdn/i4l: fetch the ppp_write buffer in one shot
- net_sched: always reset qdisc backlog in qdisc_reset()
- net: stmmac: Cocci spatch "of_table"
- net: qcom/emac: specify the correct size when mapping a DMA buffer
- vti: fix use after free in vti_tunnel_xmit/vti6_tnl_xmit
- l2tp: fix race condition in l2tp_tunnel_delete
- tun: bail out from tun_get_user() if the skb is empty
- net: dsa: mv88e6xxx: Allow dsa and cpu ports in multiple vlans
- net: dsa: Fix network device registration order
- packet: in packet_do_bind, test fanout with bind_lock held
- packet: only test po->has_vnet_hdr once in packet_snd
- net: dsa: mv88e6xxx: lock mutex when freeing IRQs
- net: Set sk_prot_creator when cloning sockets to the right proto
- net/mlx5e: IPoIB, Fix access to invalid memory address
- netlink: do not proceed if dump's start() errs
- ip6_gre: ip6gre_tap device should keep dst
- ip6_tunnel: update mtu properly for ARPHRD_ETHER tunnel device in tx path
- IPv4: early demux can return an error code
- tipc: use only positive error codes in messages
- l2tp: fix l2tp_eth module loading
- socket, bpf: fix possible use after free
- net: rtnetlink: fix info leak in RTM_GETSTATS call
- bpf: fix bpf_tail_call() x64 JIT
- usb: gadget: core: fix ->udc_set_speed() logic
- USB: gadgetfs: Fix crash caused by inadequate synchronization
- USB: gadgetfs: fix copy_to_user while holding spinlock
- usb: gadget: udc: atmel: set vbus irqflags explicitly
- usb: gadget: udc: renesas_usb3: fix for no-data control transfer
- usb: gadget: udc: renesas_usb3: fix Pn_RAMMAP.Pn_MPKT value
- usb: gadget: udc: renesas_usb3: Fix return value of usb3_write_pipe()
- usb-storage: unusual_devs entry to fix write-access regression for Seagate
external drives
- usb-storage: fix bogus hardware error messages for ATA pass-thru devices
- usb: renesas_usbhs: fix the BCLR setting condition for non-DCP pipe
- usb: renesas_usbhs: fix usbhsf_fifo_clear() for RX direction
- ALSA: usb-audio: Check out-of-bounds access by corrupted buffer descriptor
- usb: pci-quirks.c: Corrected timeout values used in handshake
- USB: cdc-wdm: ignore -EPIPE from GetEncapsulatedResponse
- USB: dummy-hcd: fix connection failures (wrong speed)
- USB: dummy-hcd: fix infinite-loop resubmission bug
- USB: dummy-hcd: Fix erroneous synchronization change
- USB: devio: Prevent integer overflow in proc_do_submiturb()
- USB: devio: Don't corrupt user memory
- USB: g_mass_storage: Fix deadlock when driver is unbound
- USB: uas: fix bug in handling of alternate settings
- USB: core: harden cdc_parse_cdc_header
- usb: Increase quirk delay for USB devices
- USB: fix out-of-bounds in usb_set_configuration
- usb: xhci: Free the right ring in xhci_add_endpoint()
- xhci: fix finding correct bus_state structure for USB 3.1 hosts
- xhci: fix wrong endpoint ESIT value shown in tracing
- usb: host: xhci-plat: allow sysdev to inherit from ACPI
- xhci: Fix sleeping with spin_lock_irq() held in ASmedia 1042A workaround
- Revert "xhci: Limit USB2 port wake support for AMD Promontory hosts"
- iio: adc: twl4030: Fix an error handling path in 'twl4030_madc_probe()'
- iio: adc: twl4030: Disable the vusb3v1 rugulator in the error handling
path
of 'twl4030_madc_probe()'
- iio: ad_sigma_delta: Implement a dedicated reset function
- staging: iio: ad7192: Fix - use the dedicated reset function avoiding dma
from stack.
- iio: core: Return error for failed read_reg
- IIO: BME280: Updates to Humidity readings need ctrl_reg write!
- iio: trigger: stm32-timer: preset shouldn't be buffered
- iio: trigger: stm32-timer: fix a corner case to write preset
- iio: ad7793: Fix the serial interface reset
- iio: adc: stm32: fix bad error check on max_channels
- iio: adc: mcp320x: Fix readout of negative voltages
- iio: adc: mcp320x: Fix oops on module unload
- uwb: properly check kthread_run return value
- uwb: ensure that endpoint is interrupt
- staging: vchiq_2835_arm: Fix NULL ptr dereference in free_pagelist
- ksm: fix unlocked iteration over vmas in cmp_and_merge_page()
- mm, hugetlb, soft_offline: save compound page order before page migration
- mm, oom_reaper: skip mm structs with mmu notifiers
- mm: fix RODATA_TEST failure "rodata_test: test data was not read only"
- mm: avoid marking swap cached page as lazyfree
- mm: fix data corruption caused by lazyfree page
- userfaultfd: non-cooperative: fix fork use after free
- lib/ratelimit.c: use deferred printk() version
- lsm: fix smack_inode_removexattr and xattr_getsecurity memleak
- ALSA: compress: Remove unused variable
- Revert "ALSA: echoaudio: purge contradictions between dimension matrix
members and total number of members"
- ALSA: usx2y: Suppress kernel warning at page allocation failures
- powerpc/powernv: Increase memory block size to 1GB on radix
- powerpc: Fix action argument for cpufeatures-based TLB flush
- powerpc/64s: Use emergency stack for kernel TM Bad Thing program checks
- powerpc/tm: Fix illegal TM state in signal handler
- percpu: make this_cpu_generic_read() atomic w.r.t. interrupts
- intel_th: pci: Add Lewisburg PCH support
- driver core: platform: Don't read past the end of "driver_override" buffer
- cgroup: Reinit cgroup_taskset structure before cgroup_migrate_execute()
returns
- Drivers: hv: fcopy: restore correct transfer length
- vmbus: don't acquire the mutex in vmbus_hvsock_device_unregister()
- stm class: Fix a use-after-free
- auxdisplay: charlcd: properly restore atomic counter on error path
- ftrace: Fix kmemleak in unregister_ftrace_graph
- ovl: fix error value printed in ovl_lookup_index()
- ovl: fix dput() of ERR_PTR in ovl_cleanup_index()
- ovl: fix dentry leak in ovl_indexdir_cleanup()
- ovl: fix missing unlock_rename() in ovl_do_copy_up()
- ovl: fix regression caused by exclusive upper/work dir protection
- arm64: dt marvell: Fix AP806 system controller size
- arm64: Ensure the instruction emulation is ready for userspace
- HID: rmi: Make sure the HID device is opened on resume
- HID: i2c-hid: allocate hid buffers for real worst case
- HID: wacom: leds: Don't try to control the EKR's read-only LEDs
- HID: wacom: Properly report negative values from Intuos Pro 2 Bluetooth
- HID: wacom: Correct coordinate system of touchring and pen twist
- HID: wacom: generic: Send MSC_SERIAL and ABS_MISC when leaving prox
- HID: wacom: generic: Clear ABS_MISC when tool leaves proximity
- HID: wacom: Always increment hdev refcount within wacom_get_hdev_data
- HID: wacom: bits shifted too much for 9th and 10th buttons
- btrfs: avoid overflow when sector_t is 32 bit
- Btrfs: fix overlap of fs_info::flags values
- rocker: fix rocker_tlv_put_* functions for KASAN
- netlink: fix nla_put_{u8,u16,u32} for KASAN
- dm crypt: reject sector_size feature if device length is not aligned to it
- dm ioctl: fix alignment of event number in the device list
- dm crypt: fix memory leak in crypt_ctr_cipher_old()
- KVM: PPC: Book3S: Fix server always zero from kvmppc_xive_get_xive()
- kvm/x86: Avoid async PF preempting the kernel incorrectly
- iwlwifi: mvm: use IWL_HCMD_NOCOPY for MCAST_FILTER_CMD
- scsi: sd: Implement blacklist option for WRITE SAME w/ UNMAP
- scsi: sd: Do not override max_sectors_kb sysfs setting
- brcmfmac: add length check in brcmf_cfg80211_escan_handler()
- brcmfmac: setup passive scan if requested by user-space
- drm/i915: always update ELD connector type after get modes
- drm/i915/bios: ignore HDMI on port A
- bsg-lib: fix use-after-free under memory-pressure
- nvme-pci: Use PCI bus address for data/queues in CMB
- mmc: core: add driver strength selection when selecting hs400es
- nl80211: Define policy for packet pattern attributes
- clk: samsung: exynos4: Enable VPLL and EPLL clocks for suspend/resume
cycle
- udp: perform source validation for mcast early demux
- udp: fix bcast packet reception
- base: arch_topology: fix section mismatch build warnings
- Linux 4.13.6
* Artful update to v4.13.5 stable release (LP: #1721777)
- cifs: check rsp for NULL before dereferencing in SMB2_open
- cifs: release cifs root_cred after exit_cifs
- cifs: release auth_key.response for reconnect.
- nvme-pci: fix host memory buffer allocation fallback
- nvme-pci: use appropriate initial chunk size for HMB allocation
- nvme-pci: propagate (some) errors from host memory buffer setup
- dax: remove the pmem_dax_ops->flush abstraction
- dm integrity: do not check integrity for failed read operations
- mmc: block: Fix incorrectly initialized requests
- fs/proc: Report eip/esp in /prod/PID/stat for coredumping
- scsi: scsi_transport_fc: fix NULL pointer dereference in
fc_bsg_job_timeout
- SMB3: Add support for multidialect negotiate (SMB2.1 and later)
- mac80211: fix VLAN handling with TXQs
- mac80211_hwsim: Use proper TX power
- mac80211: flush hw_roc_start work before cancelling the ROC
- mac80211: fix deadlock in driver-managed RX BA session start
- genirq: Make sparse_irq_lock protect what it should protect
- genirq/msi: Fix populating multiple interrupts
- genirq: Fix cpumask check in __irq_startup_managed()
- KVM: PPC: Book3S HV: Hold kvm->lock around call to kvmppc_update_lpcr
- KVM: PPC: Book3S HV: Fix bug causing host SLB to be restored incorrectly
- KVM: PPC: Book3S HV: Don't access XIVE PIPR register using byte accesses
- tracing: Fix trace_pipe behavior for instance traces
- tracing: Erase irqsoff trace with empty write
- tracing: Remove RCU work arounds from stack tracer
- md/raid5: fix a race condition in stripe batch
- md/raid5: preserve STRIPE_ON_UNPLUG_LIST in break_stripe_batch_list
- scsi: scsi_transport_iscsi: fix the issue that iscsi_if_rx doesn't parse
nlmsg properly
- scsi: aacraid: Fix 2T+ drives on SmartIOC-2000
- scsi: aacraid: Add a small delay after IOP reset
- drm/exynos: Fix locking in the suspend/resume paths
- drm/i915/gvt: Fix incorrect PCI BARs reporting
- Revert "drm/i915/bxt: Disable device ready before shutdown command"
- drm/amdgpu: revert tile table update for oland
- drm/radeon: disable hard reset in hibernate for APUs
- crypto: drbg - fix freeing of resources
- crypto: talitos - Don't provide setkey for non hmac hashing algs.
- crypto: talitos - fix sha224
- crypto: talitos - fix hashing
- security/keys: properly zero out sensitive key material in big_key
- security/keys: rewrite all of big_key crypto
- KEYS: fix writing past end of user-supplied buffer in keyring_read()
- KEYS: prevent creating a different user's keyrings
- KEYS: prevent KEYCTL_READ on negative key
- libnvdimm, namespace: fix btt claim class crash
- powerpc/eeh: Create PHB PEs after EEH is initialized
- powerpc/pseries: Fix parent_dn reference leak in add_dt_node()
- powerpc/tm: Flush TM only if CPU has TM feature
- MIPS: Fix perf event init
- s390/perf: fix bug when creating per-thread event
- s390/mm: make pmdp_invalidate() do invalidation only
- s390/mm: fix write access check in gup_huge_pmd()
- PM: core: Fix device_pm_check_callbacks()
- Revert "IB/ipoib: Update broadcast object if PKey value was changed in
index
0"
- Fix SMB3.1.1 guest authentication to Samba
- SMB3: Fix endian warning
- SMB3: Warn user if trying to sign connection that authenticated as guest
- SMB: Validate negotiate (to protect against downgrade) even if signing off
- SMB3: handle new statx fields
- SMB3: Don't ignore O_SYNC/O_DSYNC and O_DIRECT flags
- vfs: Return -ENXIO for negative SEEK_HOLE / SEEK_DATA offsets
- libceph: don't allow bidirectional swap of pg-upmap-items
- nl80211: check for the required netlink attributes presence
- brd: fix overflow in __brd_direct_access
- gfs2: Fix debugfs glocks dump
- bsg-lib: don't free job in bsg_prepare_job
- iw_cxgb4: drop listen destroy replies if no ep found
- iw_cxgb4: remove the stid on listen create failure
- iw_cxgb4: put ep reference in pass_accept_req()
- rcu: Allow for page faults in NMI handlers
- mmc: sdhci-pci: Fix voltage switch for some Intel host controllers
- extable: Consolidate *kernel_text_address() functions
- extable: Enable RCU if it is not watching in kernel_text_address()
- seccomp: fix the usage of get/put_seccomp_filter() in seccomp_get_filter()
- arm64: Make sure SPsel is always set
- arm64: fault: Route pte translation faults via do_translation_fault
- KVM: VMX: extract __pi_post_block
- KVM: VMX: avoid double list add with VT-d posted interrupts
- KVM: VMX: simplify and fix vmx_vcpu_pi_load
- KVM: nVMX: fix HOST_CR3/HOST_CR4 cache
- kvm/x86: Handle async PF in RCU read-side critical sections
- kvm: nVMX: Don't allow L2 to access the hardware CR8
- xfs: validate bdev support for DAX inode flag
- fix infoleak in waitid(2)
- sched/sysctl: Check user input value of sysctl_sched_time_avg
- irq/generic-chip: Don't replace domain's name
- mtd: Fix partition alignment check on multi-erasesize devices
- mtd: nand: atmel: fix buffer overflow in atmel_pmecc_user
- etnaviv: fix submit error path
- etnaviv: fix gem object list corruption
- futex: Fix pi_state->owner serialization
- md: fix a race condition for flush request handling
- md: separate request handling
- PCI: Fix race condition with driver_override
- btrfs: fix NULL pointer dereference from free_reloc_roots()
- btrfs: clear ordered flag on cleaning up ordered extents
- btrfs: finish ordered extent cleaning if no progress is found
- btrfs: propagate error to btrfs_cmp_data_prepare caller
- btrfs: prevent to set invalid default subvolid
- platform/x86: fujitsu-laptop: Don't oops when FUJ02E3 is not presnt
- PM / OPP: Call notifier without holding opp_table->lock
- x86/mm: Fix fault error path using unsafe vma pointer
- x86/fpu: Don't let userspace set bogus xcomp_bv
- KVM: VMX: do not change SN bit in vmx_update_pi_irte()
- KVM: VMX: remove WARN_ON_ONCE in kvm_vcpu_trigger_posted_interrupt
- KVM: VMX: use cmpxchg64
- video: fbdev: aty: do not leak uninitialized padding in clk to userspace
- Linux 4.13.5
- [Config] Update configs for v4.13.5
-- Khalid Elmously <khalid.elmou...@canonical.com> Wed, 01 Nov 2017
11:17:43 -0400
** Changed in: linux (Ubuntu Artful)
Status: Fix Committed => Fix Released
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1721070
Title:
powerpc/64s: Add workaround for P9 vector CI load issue
Status in The Ubuntu-power-systems project:
Fix Committed
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Zesty:
Fix Released
Status in linux source package in Artful:
Fix Released
Bug description:
== SRU Justification ==
POWER9 DD2.1 and earlier has an issue where some cache inhibited
vector load will return bad data. The fix is two part, one
firmware/microcode part triggers HMI interrupts when hitting such
loads, the other part is commit 5080332c2c89 from linux-next which then
emulates the instructions in Linux.
The affected instructions are limited to lxvd2x, lxvw4x, lxvb16x and
lxvh8x.
Commit ccd3cd361341 is needed as a prereq for Artful.
Commits a3d96f70c147 and ccd3cd361341 are needed as prereqs for Zesty.
== Fixes ==
a3d96f70c147 ("powerpc/64s: Fix system reset vs general interrupt reentrancy")
ccd3cd361341 ("powerpc/mce: Move 64-bit machine check code into mce.c")
5080332c2c89 ("powerpc/64s: Add workaround for P9 vector CI load issue")
== Regression Potential ==
These commits are specific to powerpc. They required some back porting but
have been tested by IBM.
-- Problem Description --
When an instruction triggers the HMI, all threads in the core will be
sent to the HMI handler, not just the one running the vector load.
In general, these spurious HMIs are detected by the emulation code and
we just return back to the running process. Unfortunately, if a
spurious interrupt occurs on a vector load that's to normal memory we
have no way to detect that it's spurious (unless we walk the page
tables, which is very expensive). In this case we emulate the load but
we need do so using a vector load itself to ensure 128bit atomicity is
preserved.
Some additional debugfs emulated instruction counters are added also.
In order to solve this bug, we need to cherry pick the following patch
https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=next&id=5080332c2c893118dbc18755f35c8b0131cf0fc4
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-power-systems/+bug/1721070/+subscriptions
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