** Description changed:

  SRU Justification
  
      Impact:
         The upstream process for stable tree updates is quite similar
         in scope to the Ubuntu SRU process, e.g., each patch has to
         demonstrably fix a bug, and each patch is vetted by upstream
         by originating either directly from a mainline/stable Linux tree or
         a minimally backported form of that patch. The v4.15.5 upstream stable
         patch set is now available. It should be included in the Ubuntu
         kernel as well.
  
         git://git.kernel.org/
  
      TEST CASE: TBD
  
         The following patches from the v4.15.5 stable release shall be
  applied:
  
  scsi: smartpqi: allow static build ("built-in")
  IB/umad: Fix use of unprotected device pointer
  IB/qib: Fix comparison error with qperf compare/swap test
  IB/mlx4: Fix incorrectly releasing steerable UD QPs when have only ETH ports
  IB/core: Fix two kernel warnings triggered by rxe registration
  IB/core: Fix ib_wc structure size to remain in 64 bytes boundary
  IB/core: Avoid a potential OOPs for an unused optional parameter
  selftests: seccomp: fix compile error seccomp_bpf
  kselftest: fix OOM in memory compaction test
  RDMA/rxe: Fix a race condition related to the QP error state
  RDMA/rxe: Fix a race condition in rxe_requester()
  RDMA/rxe: Fix rxe_qp_cleanup()
  cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin
- swiotlb: suppress warning when __GFP_NOWARN is set
  PM / devfreq: Propagate error from devfreq_add_device()
  mwifiex: resolve reset vs. remove()/shutdown() deadlocks
  ocfs2: try a blocking lock before return AOP_TRUNCATED_PAGE
  trace_uprobe: Display correct offset in uprobe_events
  powerpc/radix: Remove trace_tlbie call from radix__flush_tlb_all
  powerpc/kernel: Block interrupts when updating TIDR
  powerpc/vas: Don't set uses_vas for kernel windows
  powerpc/numa: Invalidate numa_cpu_lookup_table on cpu remove
  powerpc/mm: Flush radix process translations when setting MMU type
  powerpc/xive: Use hw CPU ids when configuring the CPU queues
  dma-buf: fix reservation_object_wait_timeout_rcu once more v2
  s390: fix handling of -1 in set{,fs}[gu]id16 syscalls
  arm64: dts: msm8916: Correct ipc references for smsm
  ARM: lpc3250: fix uda1380 gpio numbers
  ARM: dts: STi: Add gpio polarity for "hdmi,hpd-gpio" property
  ARM: dts: nomadik: add interrupt-parent for clcd
  arm: dts: mt7623: fix card detection issue on bananapi-r2
  arm: spear600: Add missing interrupt-parent of rtc
  arm: spear13xx: Fix dmas cells
  arm: spear13xx: Fix spics gpio controller's warning
  x86/gpu: add CFL to early quirks
  x86/kexec: Make kexec (mostly) work in 5-level paging mode
  x86/xen: init %gs very early to avoid page faults with stack protector
  x86: PM: Make APM idle driver initialize polling state
  mm, memory_hotplug: fix memmap initialization
  x86/entry/64: Clear extra registers beyond syscall arguments, to reduce 
speculation attack surface
  x86/entry/64/compat: Clear registers for compat syscalls, to reduce 
speculation attack surface
  compiler-gcc.h: Introduce __optimize function attribute
  compiler-gcc.h: __nostackprotector needs gcc-4.4 and up
  crypto: sun4i_ss_prng - fix return value of sun4i_ss_prng_generate
  crypto: sun4i_ss_prng - convert lock to _bh in sun4i_ss_prng_generate
  powerpc/mm/radix: Split linear mapping on hot-unplug
  x86/mm/pti: Fix PTI comment in entry_SYSCALL_64()
  x86/speculation: Update Speculation Control microcode blacklist
  x86/speculation: Correct Speculation Control microcode blacklist again
  Revert "x86/speculation: Simplify indirect_branch_prediction_barrier()"
  KVM/x86: Reduce retpoline performance impact in slot_handle_level_range(), by 
always inlining iterator helper methods
  X86/nVMX: Properly set spec_ctrl and pred_cmd before merging MSRs
  KVM/nVMX: Set the CPU_BASED_USE_MSR_BITMAPS if we have a valid L02 MSR bitmap
  x86/speculation: Clean up various Spectre related details
  PM / runtime: Update links_count also if !CONFIG_SRCU
  PM: cpuidle: Fix cpuidle_poll_state_init() prototype
  platform/x86: wmi: fix off-by-one write in wmi_dev_probe()
  x86/entry/64: Clear registers for exceptions/interrupts, to reduce 
speculation attack surface
  x86/entry/64: Merge SAVE_C_REGS and SAVE_EXTRA_REGS, remove unused extensions
  x86/entry/64: Merge the POP_C_REGS and POP_EXTRA_REGS macros into a single 
POP_REGS macro
  x86/entry/64: Interleave XOR register clearing with PUSH instructions
  x86/entry/64: Introduce the PUSH_AND_CLEAN_REGS macro
  x86/entry/64: Use PUSH_AND_CLEAN_REGS in more cases
  x86/entry/64: Get rid of the ALLOC_PT_GPREGS_ON_STACK and SAVE_AND_CLEAR_REGS 
macros
  x86/entry/64: Indent PUSH_AND_CLEAR_REGS and POP_REGS properly
  x86/entry/64: Fix paranoid_entry() frame pointer warning
  x86/entry/64: Remove the unused 'icebp' macro
  selftests/x86: Fix vDSO selftest segfault for vsyscall=none
  selftests/x86: Clean up and document sscanf() usage
  selftests/x86/pkeys: Remove unused functions
  selftests/x86: Fix build bug caused by the 5lvl test which has been moved to 
the VM directory
  selftests/x86: Do not rely on "int $0x80" in test_mremap_vdso.c
  gfs2: Fixes to "Implement iomap for block_map"
  selftests/x86: Do not rely on "int $0x80" in single_step_syscall.c
  selftests/x86: Disable tests requiring 32-bit support on pure 64-bit systems
  objtool: Fix segfault in ignore_unreachable_insn()
  x86/debug, objtool: Annotate WARN()-related UD2 as reachable
  x86/debug: Use UD2 for WARN()
  x86/speculation: Fix up array_index_nospec_mask() asm constraint
  nospec: Move array_index_nospec() parameter checking into separate macro
  x86/speculation: Add <asm/msr-index.h> dependency
  x86/mm: Rename flush_tlb_single() and flush_tlb_one() to 
__flush_tlb_one_[user|kernel]()
  selftests/x86/mpx: Fix incorrect bounds with old _sigfault
  x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
  x86/spectre: Fix an error message
  x86/cpu: Change type of x86_cache_size variable to unsigned int
  x86/entry/64: Fix CR3 restore in paranoid_exit()
  drm/ttm: Don't add swapped BOs to swap-LRU list
  drm/ttm: Fix 'buf' pointer update in ttm_bo_vm_access_kmap() (v2)
  drm/qxl: unref cursor bo when finished with it
  drm/qxl: reapply cursor after resetting primary
  drm/amd/powerplay: Fix smu_table_entry.handle type
  drm/ast: Load lut in crtc_commit
  drm: Check for lessee in DROP_MASTER ioctl
  arm64: Add missing Falkor part number for branch predictor hardening
  drm/radeon: Add dpm quirk for Jet PRO (v2)
  drm/radeon: adjust tested variable
  x86/smpboot: Fix uncore_pci_remove() indexing bug when hot-removing a 
physical CPU
  rtc-opal: Fix handling of firmware error codes, prevent busy loops
  mbcache: initialize entry->e_referenced in mb_cache_entry_create()
  mmc: sdhci: Implement an SDHCI-specific bounce buffer
  mmc: bcm2835: Don't overwrite max frequency unconditionally
  Revert "mmc: meson-gx: include tx phase in the tuning process"
  mlx5: fix mlx5_get_vector_affinity to start from completion vector 0
  Revert "apple-gmux: lock iGP IO to protect from vgaarb changes"
  jbd2: fix sphinx kernel-doc build warnings
  ext4: fix a race in the ext4 shutdown path
  ext4: save error to disk in __ext4_grp_locked_error()
  ext4: correct documentation for grpid mount option
  mm: hide a #warning for COMPILE_TEST
  mm: Fix memory size alignment in devm_memremap_pages_release()
  MIPS: Fix typo BIG_ENDIAN to CPU_BIG_ENDIAN
  MIPS: CPS: Fix MIPS_ISA_LEVEL_RAW fallout
  MIPS: Fix incorrect mem=X@Y handling
  PCI: Disable MSI for HiSilicon Hip06/Hip07 only in Root Port mode
  PCI: iproc: Fix NULL pointer dereference for BCMA
  PCI: pciehp: Assume NoCompl+ for Thunderbolt ports
  PCI: keystone: Fix interrupt-controller-node lookup
  video: fbdev: atmel_lcdfb: fix display-timings lookup
  console/dummy: leave .con_font_get set to NULL
  rbd: whitelist RBD_FEATURE_OPERATIONS feature bit
  xen: Fix {set,clear}_foreign_p2m_mapping on autotranslating guests
  xenbus: track caller request id
  seq_file: fix incomplete reset on read from zero offset
  tracing: Fix parsing of globs with a wildcard at the beginning
  mpls, nospec: Sanitize array index in mpls_label_ok()
  rtlwifi: rtl8821ae: Fix connection lost problem correctly
  arm64: proc: Set PTE_NG for table entries to avoid traversing them twice
  xprtrdma: Fix calculation of ri_max_send_sges
  xprtrdma: Fix BUG after a device removal
  blk-wbt: account flush requests correctly
  target/iscsi: avoid NULL dereference in CHAP auth error path
  iscsi-target: make sure to wake up sleeping login worker
  dm: correctly handle chained bios in dec_pending()
  Btrfs: fix deadlock in run_delalloc_nocow
  Btrfs: fix crash due to not cleaning up tree log block's dirty bits
  Btrfs: fix extent state leak from tree log
  Btrfs: fix btrfs_evict_inode to handle abnormal inodes correctly
  Btrfs: fix use-after-free on root->orphan_block_rsv
  Btrfs: fix unexpected -EEXIST when creating new inode
  9p/trans_virtio: discard zero-length reply
  mtd: nand: vf610: set correct ooblayout
- ALSA: hda - Fix headset mic detection problem for two Dell machines
  ALSA: usb-audio: Fix UAC2 get_ctl request with a RANGE attribute
  ALSA: hda/realtek - Add headset mode support for Dell laptop
  ALSA: hda/realtek - Enable Thinkpad Dock device for ALC298 platform
  ALSA: hda/realtek: PCI quirk for Fujitsu U7x7
  ALSA: usb-audio: add implicit fb quirk for Behringer UFX1204
  ALSA: usb: add more device quirks for USB DSD devices
  ALSA: seq: Fix racy pool initializations
  mvpp2: fix multicast address filter
  usb: Move USB_UHCI_BIG_ENDIAN_* out of USB_SUPPORT
  x86/mm, mm/hwpoison: Don't unconditionally unmap kernel 1:1 pages
  ARM: dts: exynos: fix RTC interrupt for exynos5410
  ARM: pxa/tosa-bt: add MODULE_LICENSE tag
  arm64: dts: msm8916: Add missing #phy-cells
  ARM: dts: s5pv210: add interrupt-parent for ohci
  arm: dts: mt7623: Update ethsys binding
  arm: dts: mt2701: Add reset-cells
  ARM: dts: Delete bogus reference to the charlcd
  media: r820t: fix r820t_write_reg for KASAN
  mmc: sdhci-of-esdhc: fix eMMC couldn't work after kexec
  mmc: sdhci-of-esdhc: fix the mmc error after sleep on ls1046ardb
  Linux 4.15.5
+ 
+        The following patches from the v4.15.5 stable release shall be
+ applied:
+ 
+ swiotlb: suppress warning when __GFP_NOWARN is set
+ ALSA: hda - Fix headset mic detection problem for two Dell machines

** Description changed:

  SRU Justification
  
      Impact:
         The upstream process for stable tree updates is quite similar
         in scope to the Ubuntu SRU process, e.g., each patch has to
         demonstrably fix a bug, and each patch is vetted by upstream
         by originating either directly from a mainline/stable Linux tree or
         a minimally backported form of that patch. The v4.15.5 upstream stable
         patch set is now available. It should be included in the Ubuntu
         kernel as well.
  
         git://git.kernel.org/
  
      TEST CASE: TBD
  
         The following patches from the v4.15.5 stable release shall be
  applied:
  
  scsi: smartpqi: allow static build ("built-in")
  IB/umad: Fix use of unprotected device pointer
  IB/qib: Fix comparison error with qperf compare/swap test
  IB/mlx4: Fix incorrectly releasing steerable UD QPs when have only ETH ports
  IB/core: Fix two kernel warnings triggered by rxe registration
  IB/core: Fix ib_wc structure size to remain in 64 bytes boundary
  IB/core: Avoid a potential OOPs for an unused optional parameter
  selftests: seccomp: fix compile error seccomp_bpf
  kselftest: fix OOM in memory compaction test
  RDMA/rxe: Fix a race condition related to the QP error state
  RDMA/rxe: Fix a race condition in rxe_requester()
  RDMA/rxe: Fix rxe_qp_cleanup()
  cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin
  PM / devfreq: Propagate error from devfreq_add_device()
  mwifiex: resolve reset vs. remove()/shutdown() deadlocks
  ocfs2: try a blocking lock before return AOP_TRUNCATED_PAGE
  trace_uprobe: Display correct offset in uprobe_events
  powerpc/radix: Remove trace_tlbie call from radix__flush_tlb_all
  powerpc/kernel: Block interrupts when updating TIDR
  powerpc/vas: Don't set uses_vas for kernel windows
  powerpc/numa: Invalidate numa_cpu_lookup_table on cpu remove
  powerpc/mm: Flush radix process translations when setting MMU type
  powerpc/xive: Use hw CPU ids when configuring the CPU queues
  dma-buf: fix reservation_object_wait_timeout_rcu once more v2
  s390: fix handling of -1 in set{,fs}[gu]id16 syscalls
  arm64: dts: msm8916: Correct ipc references for smsm
  ARM: lpc3250: fix uda1380 gpio numbers
  ARM: dts: STi: Add gpio polarity for "hdmi,hpd-gpio" property
  ARM: dts: nomadik: add interrupt-parent for clcd
  arm: dts: mt7623: fix card detection issue on bananapi-r2
  arm: spear600: Add missing interrupt-parent of rtc
  arm: spear13xx: Fix dmas cells
  arm: spear13xx: Fix spics gpio controller's warning
  x86/gpu: add CFL to early quirks
  x86/kexec: Make kexec (mostly) work in 5-level paging mode
  x86/xen: init %gs very early to avoid page faults with stack protector
  x86: PM: Make APM idle driver initialize polling state
  mm, memory_hotplug: fix memmap initialization
  x86/entry/64: Clear extra registers beyond syscall arguments, to reduce 
speculation attack surface
  x86/entry/64/compat: Clear registers for compat syscalls, to reduce 
speculation attack surface
  compiler-gcc.h: Introduce __optimize function attribute
  compiler-gcc.h: __nostackprotector needs gcc-4.4 and up
  crypto: sun4i_ss_prng - fix return value of sun4i_ss_prng_generate
  crypto: sun4i_ss_prng - convert lock to _bh in sun4i_ss_prng_generate
  powerpc/mm/radix: Split linear mapping on hot-unplug
  x86/mm/pti: Fix PTI comment in entry_SYSCALL_64()
  x86/speculation: Update Speculation Control microcode blacklist
  x86/speculation: Correct Speculation Control microcode blacklist again
  Revert "x86/speculation: Simplify indirect_branch_prediction_barrier()"
  KVM/x86: Reduce retpoline performance impact in slot_handle_level_range(), by 
always inlining iterator helper methods
  X86/nVMX: Properly set spec_ctrl and pred_cmd before merging MSRs
  KVM/nVMX: Set the CPU_BASED_USE_MSR_BITMAPS if we have a valid L02 MSR bitmap
  x86/speculation: Clean up various Spectre related details
  PM / runtime: Update links_count also if !CONFIG_SRCU
  PM: cpuidle: Fix cpuidle_poll_state_init() prototype
  platform/x86: wmi: fix off-by-one write in wmi_dev_probe()
  x86/entry/64: Clear registers for exceptions/interrupts, to reduce 
speculation attack surface
  x86/entry/64: Merge SAVE_C_REGS and SAVE_EXTRA_REGS, remove unused extensions
  x86/entry/64: Merge the POP_C_REGS and POP_EXTRA_REGS macros into a single 
POP_REGS macro
  x86/entry/64: Interleave XOR register clearing with PUSH instructions
  x86/entry/64: Introduce the PUSH_AND_CLEAN_REGS macro
  x86/entry/64: Use PUSH_AND_CLEAN_REGS in more cases
  x86/entry/64: Get rid of the ALLOC_PT_GPREGS_ON_STACK and SAVE_AND_CLEAR_REGS 
macros
  x86/entry/64: Indent PUSH_AND_CLEAR_REGS and POP_REGS properly
  x86/entry/64: Fix paranoid_entry() frame pointer warning
  x86/entry/64: Remove the unused 'icebp' macro
  selftests/x86: Fix vDSO selftest segfault for vsyscall=none
  selftests/x86: Clean up and document sscanf() usage
  selftests/x86/pkeys: Remove unused functions
  selftests/x86: Fix build bug caused by the 5lvl test which has been moved to 
the VM directory
  selftests/x86: Do not rely on "int $0x80" in test_mremap_vdso.c
  gfs2: Fixes to "Implement iomap for block_map"
  selftests/x86: Do not rely on "int $0x80" in single_step_syscall.c
  selftests/x86: Disable tests requiring 32-bit support on pure 64-bit systems
  objtool: Fix segfault in ignore_unreachable_insn()
  x86/debug, objtool: Annotate WARN()-related UD2 as reachable
  x86/debug: Use UD2 for WARN()
  x86/speculation: Fix up array_index_nospec_mask() asm constraint
  nospec: Move array_index_nospec() parameter checking into separate macro
  x86/speculation: Add <asm/msr-index.h> dependency
  x86/mm: Rename flush_tlb_single() and flush_tlb_one() to 
__flush_tlb_one_[user|kernel]()
  selftests/x86/mpx: Fix incorrect bounds with old _sigfault
  x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
  x86/spectre: Fix an error message
  x86/cpu: Change type of x86_cache_size variable to unsigned int
  x86/entry/64: Fix CR3 restore in paranoid_exit()
  drm/ttm: Don't add swapped BOs to swap-LRU list
  drm/ttm: Fix 'buf' pointer update in ttm_bo_vm_access_kmap() (v2)
  drm/qxl: unref cursor bo when finished with it
  drm/qxl: reapply cursor after resetting primary
  drm/amd/powerplay: Fix smu_table_entry.handle type
  drm/ast: Load lut in crtc_commit
  drm: Check for lessee in DROP_MASTER ioctl
  arm64: Add missing Falkor part number for branch predictor hardening
  drm/radeon: Add dpm quirk for Jet PRO (v2)
  drm/radeon: adjust tested variable
  x86/smpboot: Fix uncore_pci_remove() indexing bug when hot-removing a 
physical CPU
  rtc-opal: Fix handling of firmware error codes, prevent busy loops
  mbcache: initialize entry->e_referenced in mb_cache_entry_create()
  mmc: sdhci: Implement an SDHCI-specific bounce buffer
  mmc: bcm2835: Don't overwrite max frequency unconditionally
  Revert "mmc: meson-gx: include tx phase in the tuning process"
  mlx5: fix mlx5_get_vector_affinity to start from completion vector 0
  Revert "apple-gmux: lock iGP IO to protect from vgaarb changes"
  jbd2: fix sphinx kernel-doc build warnings
  ext4: fix a race in the ext4 shutdown path
  ext4: save error to disk in __ext4_grp_locked_error()
  ext4: correct documentation for grpid mount option
  mm: hide a #warning for COMPILE_TEST
  mm: Fix memory size alignment in devm_memremap_pages_release()
  MIPS: Fix typo BIG_ENDIAN to CPU_BIG_ENDIAN
  MIPS: CPS: Fix MIPS_ISA_LEVEL_RAW fallout
  MIPS: Fix incorrect mem=X@Y handling
  PCI: Disable MSI for HiSilicon Hip06/Hip07 only in Root Port mode
  PCI: iproc: Fix NULL pointer dereference for BCMA
  PCI: pciehp: Assume NoCompl+ for Thunderbolt ports
  PCI: keystone: Fix interrupt-controller-node lookup
  video: fbdev: atmel_lcdfb: fix display-timings lookup
  console/dummy: leave .con_font_get set to NULL
  rbd: whitelist RBD_FEATURE_OPERATIONS feature bit
  xen: Fix {set,clear}_foreign_p2m_mapping on autotranslating guests
  xenbus: track caller request id
  seq_file: fix incomplete reset on read from zero offset
  tracing: Fix parsing of globs with a wildcard at the beginning
  mpls, nospec: Sanitize array index in mpls_label_ok()
  rtlwifi: rtl8821ae: Fix connection lost problem correctly
  arm64: proc: Set PTE_NG for table entries to avoid traversing them twice
  xprtrdma: Fix calculation of ri_max_send_sges
  xprtrdma: Fix BUG after a device removal
  blk-wbt: account flush requests correctly
  target/iscsi: avoid NULL dereference in CHAP auth error path
  iscsi-target: make sure to wake up sleeping login worker
  dm: correctly handle chained bios in dec_pending()
  Btrfs: fix deadlock in run_delalloc_nocow
  Btrfs: fix crash due to not cleaning up tree log block's dirty bits
  Btrfs: fix extent state leak from tree log
  Btrfs: fix btrfs_evict_inode to handle abnormal inodes correctly
  Btrfs: fix use-after-free on root->orphan_block_rsv
  Btrfs: fix unexpected -EEXIST when creating new inode
  9p/trans_virtio: discard zero-length reply
  mtd: nand: vf610: set correct ooblayout
  ALSA: usb-audio: Fix UAC2 get_ctl request with a RANGE attribute
  ALSA: hda/realtek - Add headset mode support for Dell laptop
  ALSA: hda/realtek - Enable Thinkpad Dock device for ALC298 platform
  ALSA: hda/realtek: PCI quirk for Fujitsu U7x7
  ALSA: usb-audio: add implicit fb quirk for Behringer UFX1204
  ALSA: usb: add more device quirks for USB DSD devices
  ALSA: seq: Fix racy pool initializations
  mvpp2: fix multicast address filter
  usb: Move USB_UHCI_BIG_ENDIAN_* out of USB_SUPPORT
  x86/mm, mm/hwpoison: Don't unconditionally unmap kernel 1:1 pages
  ARM: dts: exynos: fix RTC interrupt for exynos5410
  ARM: pxa/tosa-bt: add MODULE_LICENSE tag
  arm64: dts: msm8916: Add missing #phy-cells
  ARM: dts: s5pv210: add interrupt-parent for ohci
  arm: dts: mt7623: Update ethsys binding
  arm: dts: mt2701: Add reset-cells
  ARM: dts: Delete bogus reference to the charlcd
  media: r820t: fix r820t_write_reg for KASAN
  mmc: sdhci-of-esdhc: fix eMMC couldn't work after kexec
  mmc: sdhci-of-esdhc: fix the mmc error after sleep on ls1046ardb
  Linux 4.15.5
  
-        The following patches from the v4.15.5 stable release shall be
- applied:
+        The following patches from the v4.15.5 stable release had already
+ been applied:
  
  swiotlb: suppress warning when __GFP_NOWARN is set
  ALSA: hda - Fix headset mic detection problem for two Dell machines

** Changed in: linux (Ubuntu)
       Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1751131

Title:
  Bionic update to v4.15.5 stable release

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