Public bug reported:

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 following upstream
       stable patches should be included in the Ubuntu kernel:

       upstream stable patchset 2018-12-13 (ported from v4.14.55 and v4.17.6)
       from git://git.kernel.org/

i2c: core: smbus: fix a potential missing-check bug
drm/amdgpu: Dynamically probe for ATIF handle (v2)
drm/amdgpu: Add amdgpu_atpx_get_dhandle()
ARM: dts: imx51-zii-rdu1: fix touchscreen pinctrl
scsi: aacraid: Fix PD performance regression over incorrect qd being set
drm/amdgpu: Make struct amdgpu_atif private to amdgpu_acpi.c
PCI / ACPI / PM: Resume bridges w/o drivers on suspend-to-RAM
sched, tracing: Fix trace_sched_pi_setprio() for deboosting
staging: comedi: quatech_daqp_cs: fix no-op loop daqp_ao_insn_write()
netfilter: nf_log: don't hold nf_log_mutex during user access
mtd: cfi_cmdset_0002: Change erase functions to check chip good only
mtd: cfi_cmdset_0002: Change erase functions to retry for error
mtd: cfi_cmdset_0002: Change definition naming to retry write operation
dm: prevent DAX mounts if not supported
dm: set QUEUE_FLAG_DAX accordingly in dm_table_set_restrictions()
dax: check for QUEUE_FLAG_DAX in bdev_dax_supported()
dax: change bdev_dax_supported() to support boolean returns
fs: allow per-device dax status checking for filesystems
media: cx25840: Use subdev host data for PLL override
Kbuild: fix # escaping in .cmd files for future Make
Revert "dpaa_eth: fix error in dpaa_remove()"
f2fs: truncate preallocated blocks in error case
media: vb2: core: Finish buffers at the end of the stream
HID: debug: check length before copy_to_user()
HID: hiddev: fix potential Spectre v1
HID: i2c-hid: Fix "incomplete report" noise
ext4: check superblock mapped prior to committing
ext4: add more mount time checks of the superblock
ext4: add more inode number paranoia checks
ext4: avoid running out of journal credits when appending to an inline file
ext4: never move the system.data xattr out of the inode body
ext4: include the illegal physical block in the bad map ext4_error msg
ext4: verify the depth of extent tree in ext4_find_extent()
ext4: only look at the bg_flags field if it is valid
ext4: always check block group bounds in ext4_init_block_bitmap()
ext4: make sure bitmaps and the inode table don't overlap with bg descriptors
ext4: always verify the magic number in xattr blocks
ext4: add corruption check in ext4_xattr_set_entry()
jbd2: don't mark block as modified if the handle is out of credits
drm/udl: fix display corruption of the last line
drm: Use kvzalloc for allocating blob property memory
cifs: Fix infinite loop when using hard mount option
cifs: Fix memory leak in smb2_set_ea()
cifs: Fix use after free of a mid_q_entry
vfio: Use get_user_pages_longterm correctly
drbd: fix access after free
s390: Correct register corruption in critical section cleanup
scsi: target: Fix truncated PR-in ReadKeys response
tracing: Fix missing return symbol in function_graph output
mm: hugetlb: yield when prepping struct pages
userfaultfd: hugetlbfs: fix userfaultfd_huge_must_wait() pte access

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu Bionic)
     Importance: Undecided
     Assignee: Kamal Mostafa (kamalmostafa)
         Status: In Progress


** Tags: kernel-stable-tracking-bug

** Tags added: kernel-stable-tracking-bug

** Also affects: linux (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Bionic)
       Status: New => In Progress

** Changed in: linux (Ubuntu Bionic)
     Assignee: (unassigned) => Kamal Mostafa (kamalmostafa)

** Description changed:

+ SRU Justification
  
-     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 following upstream
+        stable patches should be included in the Ubuntu kernel:
  
-     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 following upstream
-        stable patches should be included in the Ubuntu kernel:
+        upstream stable patchset 2018-12-13 (ported from v4.14.55 and v4.17.6)
+        from git://git.kernel.org/
  
-        upstream stable patchset 2018-12-13
-        from git://git.kernel.org/
+ i2c: core: smbus: fix a potential missing-check bug
+ drm/amdgpu: Dynamically probe for ATIF handle (v2)
+ drm/amdgpu: Add amdgpu_atpx_get_dhandle()
+ ARM: dts: imx51-zii-rdu1: fix touchscreen pinctrl
+ scsi: aacraid: Fix PD performance regression over incorrect qd being set
+ drm/amdgpu: Make struct amdgpu_atif private to amdgpu_acpi.c
+ PCI / ACPI / PM: Resume bridges w/o drivers on suspend-to-RAM
+ sched, tracing: Fix trace_sched_pi_setprio() for deboosting
+ staging: comedi: quatech_daqp_cs: fix no-op loop daqp_ao_insn_write()
+ netfilter: nf_log: don't hold nf_log_mutex during user access
+ mtd: cfi_cmdset_0002: Change erase functions to check chip good only
+ mtd: cfi_cmdset_0002: Change erase functions to retry for error
+ mtd: cfi_cmdset_0002: Change definition naming to retry write operation
+ dm: prevent DAX mounts if not supported
+ dm: set QUEUE_FLAG_DAX accordingly in dm_table_set_restrictions()
+ dax: check for QUEUE_FLAG_DAX in bdev_dax_supported()
+ dax: change bdev_dax_supported() to support boolean returns
+ fs: allow per-device dax status checking for filesystems
+ media: cx25840: Use subdev host data for PLL override
+ Kbuild: fix # escaping in .cmd files for future Make
+ Revert "dpaa_eth: fix error in dpaa_remove()"
+ f2fs: truncate preallocated blocks in error case
+ media: vb2: core: Finish buffers at the end of the stream
+ HID: debug: check length before copy_to_user()
+ HID: hiddev: fix potential Spectre v1
+ HID: i2c-hid: Fix "incomplete report" noise
+ ext4: check superblock mapped prior to committing
+ ext4: add more mount time checks of the superblock
+ ext4: add more inode number paranoia checks
+ ext4: avoid running out of journal credits when appending to an inline file
+ ext4: never move the system.data xattr out of the inode body
+ ext4: include the illegal physical block in the bad map ext4_error msg
+ ext4: verify the depth of extent tree in ext4_find_extent()
+ ext4: only look at the bg_flags field if it is valid
+ ext4: always check block group bounds in ext4_init_block_bitmap()
+ ext4: make sure bitmaps and the inode table don't overlap with bg descriptors
+ ext4: always verify the magic number in xattr blocks
+ ext4: add corruption check in ext4_xattr_set_entry()
+ jbd2: don't mark block as modified if the handle is out of credits
+ drm/udl: fix display corruption of the last line
+ drm: Use kvzalloc for allocating blob property memory
+ cifs: Fix infinite loop when using hard mount option
+ cifs: Fix memory leak in smb2_set_ea()
+ cifs: Fix use after free of a mid_q_entry
+ vfio: Use get_user_pages_longterm correctly
+ drbd: fix access after free
+ s390: Correct register corruption in critical section cleanup
+ scsi: target: Fix truncated PR-in ReadKeys response
+ tracing: Fix missing return symbol in function_graph output
+ mm: hugetlb: yield when prepping struct pages
+ userfaultfd: hugetlbfs: fix userfaultfd_huge_must_wait() pte access

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https://bugs.launchpad.net/bugs/1808399

Title:
  Bionic update: upstream stable patchset 2018-12-13

Status in linux package in Ubuntu:
  New
Status in linux source package in Bionic:
  In Progress

Bug description:
  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 following upstream
         stable patches should be included in the Ubuntu kernel:

         upstream stable patchset 2018-12-13 (ported from v4.14.55 and v4.17.6)
         from git://git.kernel.org/

  i2c: core: smbus: fix a potential missing-check bug
  drm/amdgpu: Dynamically probe for ATIF handle (v2)
  drm/amdgpu: Add amdgpu_atpx_get_dhandle()
  ARM: dts: imx51-zii-rdu1: fix touchscreen pinctrl
  scsi: aacraid: Fix PD performance regression over incorrect qd being set
  drm/amdgpu: Make struct amdgpu_atif private to amdgpu_acpi.c
  PCI / ACPI / PM: Resume bridges w/o drivers on suspend-to-RAM
  sched, tracing: Fix trace_sched_pi_setprio() for deboosting
  staging: comedi: quatech_daqp_cs: fix no-op loop daqp_ao_insn_write()
  netfilter: nf_log: don't hold nf_log_mutex during user access
  mtd: cfi_cmdset_0002: Change erase functions to check chip good only
  mtd: cfi_cmdset_0002: Change erase functions to retry for error
  mtd: cfi_cmdset_0002: Change definition naming to retry write operation
  dm: prevent DAX mounts if not supported
  dm: set QUEUE_FLAG_DAX accordingly in dm_table_set_restrictions()
  dax: check for QUEUE_FLAG_DAX in bdev_dax_supported()
  dax: change bdev_dax_supported() to support boolean returns
  fs: allow per-device dax status checking for filesystems
  media: cx25840: Use subdev host data for PLL override
  Kbuild: fix # escaping in .cmd files for future Make
  Revert "dpaa_eth: fix error in dpaa_remove()"
  f2fs: truncate preallocated blocks in error case
  media: vb2: core: Finish buffers at the end of the stream
  HID: debug: check length before copy_to_user()
  HID: hiddev: fix potential Spectre v1
  HID: i2c-hid: Fix "incomplete report" noise
  ext4: check superblock mapped prior to committing
  ext4: add more mount time checks of the superblock
  ext4: add more inode number paranoia checks
  ext4: avoid running out of journal credits when appending to an inline file
  ext4: never move the system.data xattr out of the inode body
  ext4: include the illegal physical block in the bad map ext4_error msg
  ext4: verify the depth of extent tree in ext4_find_extent()
  ext4: only look at the bg_flags field if it is valid
  ext4: always check block group bounds in ext4_init_block_bitmap()
  ext4: make sure bitmaps and the inode table don't overlap with bg descriptors
  ext4: always verify the magic number in xattr blocks
  ext4: add corruption check in ext4_xattr_set_entry()
  jbd2: don't mark block as modified if the handle is out of credits
  drm/udl: fix display corruption of the last line
  drm: Use kvzalloc for allocating blob property memory
  cifs: Fix infinite loop when using hard mount option
  cifs: Fix memory leak in smb2_set_ea()
  cifs: Fix use after free of a mid_q_entry
  vfio: Use get_user_pages_longterm correctly
  drbd: fix access after free
  s390: Correct register corruption in critical section cleanup
  scsi: target: Fix truncated PR-in ReadKeys response
  tracing: Fix missing return symbol in function_graph output
  mm: hugetlb: yield when prepping struct pages
  userfaultfd: hugetlbfs: fix userfaultfd_huge_must_wait() pte access

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