pull-request: bpf 2018-02-28

pull-request: bpf 2018-02-28

[Daniel Borkmann]

Hi David,

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

The main changes are:

1) Add schedule points and reduce the number of loop iterations
   the test_bpf kernel module is performing in order to not hog
   the CPU for too long, from Eric.

2) Fix an out of bounds access in tail calls in the ppc64 BPF
   JIT compiler, from Daniel.

3) Fix a crash on arm64 on unaligned BPF xadd operations that
   could be triggered via interpreter and JIT, from Daniel.

Please not that once you merge net into net-next at some point, there
is a minor merge conflict in test_verifier.c since test cases had
been added at the end in both trees. Resolution is trivial: keep all
the test cases from both trees.

Please consider pulling these changes from:

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

Thanks a lot!

----------------------------------------------------------------

The following changes since commit a5f7add332b4ea6d4b9480971b3b0f5e66466ae9:

  net_sched: gen_estimator: fix broken estimators based on percpu stats (2018-02-23 12:35:46 -0500)

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 9960d7669eaa42e82a2f4393adf549191de2e587:

  test_bpf: reduce MAX_TESTRUNS (2018-02-28 17:49:18 +0100)

----------------------------------------------------------------
Daniel Borkmann (2):
      bpf: allow xadd only on aligned memory
      bpf, ppc64: fix out of bounds access in tail call

Eric Dumazet (2):
      test_bpf: add a schedule point
      test_bpf: reduce MAX_TESTRUNS

 arch/powerpc/net/bpf_jit_comp64.c           |  1 +
 kernel/bpf/verifier.c                       | 42 +++++++++++++--------
 lib/test_bpf.c                              |  4 +-
 tools/testing/selftests/bpf/test_verifier.c | 58 +++++++++++++++++++++++++++++
 4 files changed, 88 insertions(+), 17 deletions(-)

Re: pull-request: bpf 2018-02-28

[David Miller]

From: Daniel Borkmann <daniel@iogearbox.net>
Date: Wed, 28 Feb 2018 21:27:58 +0100

> The following pull-request contains BPF updates for your *net* tree.
> 
> The main changes are:
> 
> 1) Add schedule points and reduce the number of loop iterations
>    the test_bpf kernel module is performing in order to not hog
>    the CPU for too long, from Eric.
> 
> 2) Fix an out of bounds access in tail calls in the ppc64 BPF
>    JIT compiler, from Daniel.
> 
> 3) Fix a crash on arm64 on unaligned BPF xadd operations that
>    could be triggered via interpreter and JIT, from Daniel.
> 
> Please not that once you merge net into net-next at some point, there
> is a minor merge conflict in test_verifier.c since test cases had
> been added at the end in both trees. Resolution is trivial: keep all
> the test cases from both trees.
> 
> Please consider pulling these changes from:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git

Pulled, thanks Daniel.