[GIT PULL] arm64 fixes for -rc5

[Will Deacon <will.deacon@arm.com>]

Hi Linus,

Please pull these three arm64 fixes for -rc5. The main thing is a fix to
our FUTEX_WAKE_OP implementation which was unbelievably broken, but did
actually work for the one scenario that GLIBC used to use.

Summary in the tag.

Thanks,

Will

--->8

The following changes since commit 15ade5d2e7775667cf191cf2f94327a4889f8b9d:

  Linux 5.1-rc4 (2019-04-07 14:09:59 -1000)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git tags/arm64-fixes

for you to fetch changes up to 045afc24124d80c6998d9c770844c67912083506:

  arm64: futex: Fix FUTEX_WAKE_OP atomic ops with non-zero result value (2019-04-12 15:04:33 +0100)

----------------------------------------------------------------
arm64 fixes for -rc5

- Fix stack unwinding so we ignore user stacks

- Fix ftrace module PLT trampoline initialisation checks

- Fix terminally broken implementation of FUTEX_WAKE_OP atomics

----------------------------------------------------------------
Ard Biesheuvel (1):
      arm64/ftrace: fix inadvertent BUG() in trampoline check

Will Deacon (2):
      arm64: backtrace: Don't bother trying to unwind the userspace stack
      arm64: futex: Fix FUTEX_WAKE_OP atomic ops with non-zero result value

 arch/arm64/include/asm/futex.h  | 16 ++++++++--------
 arch/arm64/include/asm/module.h |  5 +++++
 arch/arm64/kernel/ftrace.c      |  3 +--
 arch/arm64/kernel/traps.c       | 15 +++++++++------
 4 files changed, 23 insertions(+), 16 deletions(-)