pull-request: bpf 2019-01-02

[Alexei Starovoitov <ast@kernel.org>]

Hi David,

The following pull-request contains BPF updates for your *net* tree.

The main changes are:

1) prevent out of bounds speculation on pointer arithmetic, from Daniel.

2) typo fix, from Xiaozhou.

Please consider pulling these changes from:

  git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git

Thanks a lot!

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The following changes since commit 756af9c642329d54f048bac2a62f829b391f6944:

  ibmveth: fix DMA unmap error in ibmveth_xmit_start error path (2018-12-31 15:40:11 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git 

for you to fetch changes up to a67825f5195145f840939d0f85fc40b6b1077329:

  Merge branch 'prevent-oob-under-speculation' (2019-01-02 16:01:25 -0800)

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Alexei Starovoitov (1):
      Merge branch 'prevent-oob-under-speculation'

Daniel Borkmann (9):
      bpf: move {prev_,}insn_idx into verifier env
      bpf: move tmp variable into ax register in interpreter
      bpf: enable access to ax register also from verifier rewrite
      bpf: restrict map value pointer arithmetic for unprivileged
      bpf: restrict stack pointer arithmetic for unprivileged
      bpf: restrict unknown scalars of mixed signed bounds for unprivileged
      bpf: fix check_map_access smin_value test when pointer contains offset
      bpf: prevent out of bounds speculation on pointer arithmetic
      bpf: add various test cases to selftests

Xiaozhou Liu (1):
      selftests/bpf: fix error printing in test_devmap()

 include/linux/bpf_verifier.h                |   12 +
 include/linux/filter.h                      |   10 +-
 kernel/bpf/core.c                           |   54 +-
 kernel/bpf/verifier.c                       |  336 ++++++--
 tools/testing/selftests/bpf/test_maps.c     |    2 +-
 tools/testing/selftests/bpf/test_verifier.c | 1146 ++++++++++++++++++++++++++-
 6 files changed, 1452 insertions(+), 108 deletions(-)