[Xenial SRU] Xenial update to 4.4.148 stable release

[Stefan Bader]

https://bugs.launchpad.net/ubuntu/xenial/+source/linux/+bug/1792174

This stable update contains L1TF/Foreshadow updates (or at least
the start of them because I think there are a few fixups later).
A few changes were missing and got applied now. The rest was skipped
or synced (3 header files related to pagetable definitions). Those
syncs did not change code (only moved things around or added comments).
Details are recorded in the bug report and the commit messages of the
SAUCE patches.

-Stefan

---

The following changes since commit 053074798bf39cafd3d60319809f7da166fbd57b:

  Linux 4.4.147 (2018-09-12 11:38:33 +0200)

are available in the git repository at:

  git://git.launchpad.net/~smb/+git/linux-xenial stable-4.4

for you to fetch changes up to d729489723be7d46722112b515568ee845402d50:

  Linux 4.4.148 (2018-09-12 21:57:19 +0200)

----------------------------------------------------------------
Al Viro (3):
      root dentries need RCU-delayed freeing
      fix mntput/mntput race
      fix __legitimize_mnt()/mntput() race

Andi Kleen (1):
      x86/mm/kmmio: Make the tracer robust against L1TF

Andy Lutomirski (1):
      mm: Add vm_insert_pfn_prot()

Bart Van Assche (1):
      scsi: sr: Avoid that opening a CD-ROM hangs with runtime power management enabled

Dan Williams (1):
      mm: fix cache mode tracking in vm_insert_mixed()

Greg Kroah-Hartman (1):
      Linux 4.4.148

Hans de Goede (1):
      ACPI / LPSS: Add missing prv_offset setting for byt/cht PWM devices

Helge Deller (1):
      parisc: Enable CONFIG_MLONGCALLS by default

Jack Morgenstein (2):
      IB/core: Make testing MR flags for writability a static inline function
      IB/mlx4: Mark user MR as writable if actual virtual memory is writable

John David Anglin (1):
      parisc: Define mb() and add memory barriers to assembler unlock sequences

Juergen Gross (1):
      xen/netfront: don't cache skb_shinfo()

Kees Cook (1):
      fork: unconditionally clear stack on fork

Masami Hiramatsu (1):
      kprobes/x86: Fix %p uses in error messages

Michael Mera (1):
      IB/ocrdma: fix out of bounds access to local buffer

Naoya Horiguchi (1):
      mm: x86: move _PAGE_SWP_SOFT_DIRTY from bit 7 to bit 1

Nick Desaulniers (1):
      x86/irqflags: Provide a declaration for native_save_fl

Oleksij Rempel (1):
      ARM: dts: imx6sx: fix irq for pcie bridge

Stefan Bader (3):
      UBUNTU: SAUCE: Sync pgtable_64.h with upstream stable
      UBUNTU: SAUCE: Sync pgtable-3level.h with upstream stable
      UBUNTU: SAUCE: Sync pgtable.h with upstream stable

Tadeusz Struk (1):
      tpm: fix race condition in tpm_common_write()

Theodore Ts'o (1):
      ext4: fix check to prevent initializing reserved inodes

Thomas Egerer (1):
      ipv4+ipv6: Make INET*_ESP select CRYPTO_ECHAINIV

Vlastimil Babka (1):
      x86/init: fix build with CONFIG_SWAP=n

 Makefile                                    |  2 +-
 arch/arm/boot/dts/imx6sx.dtsi               |  2 +-
 arch/parisc/Kconfig                         |  2 +-
 arch/parisc/include/asm/barrier.h           | 32 ++++++++++++++++++
 arch/parisc/kernel/entry.S                  |  2 ++
 arch/parisc/kernel/pacache.S                |  1 +
 arch/parisc/kernel/syscall.S                |  4 +++
 arch/x86/include/asm/irqflags.h             |  2 ++
 arch/x86/include/asm/pgtable-3level.h       | 10 +++---
 arch/x86/include/asm/pgtable.h              | 32 +++++++++++-------
 arch/x86/include/asm/pgtable_64.h           | 32 +++++++++++++++---
 arch/x86/include/asm/pgtable_types.h        | 10 +++---
 arch/x86/kernel/kprobes/core.c              |  4 +--
 arch/x86/mm/init.c                          |  2 ++
 arch/x86/mm/kmmio.c                         | 25 +++++++++------
 drivers/acpi/acpi_lpss.c                    |  2 ++
 drivers/char/tpm/tpm-dev.c                  | 43 ++++++++++++-------------
 drivers/infiniband/core/umem.c              | 11 +------
 drivers/infiniband/hw/mlx4/mr.c             | 50 ++++++++++++++++++++++++-----
 drivers/infiniband/hw/ocrdma/ocrdma_stats.c |  2 +-
 drivers/net/xen-netfront.c                  |  8 ++---
 drivers/scsi/sr.c                           | 29 ++++++++++++-----
 fs/dcache.c                                 |  6 ++--
 fs/ext4/ialloc.c                            |  5 ++-
 fs/ext4/super.c                             |  8 +----
 fs/namespace.c                              | 28 ++++++++++++++--
 include/linux/mm.h                          |  2 ++
 include/linux/thread_info.h                 |  6 +---
 include/rdma/ib_verbs.h                     | 14 ++++++++
 mm/memory.c                                 | 33 ++++++++++++++++---
 net/ipv4/Kconfig                            |  1 +
 net/ipv6/Kconfig                            |  1 +
 32 files changed, 293 insertions(+), 118 deletions(-)
 create mode 100644 arch/parisc/include/asm/barrier.h