[PATCH v2 bpf-next 0/4] bpf: improve verifier state analysis

[Alexei Starovoitov <ast@kernel.org>]

v1->v2:
with optimization suggested by Jakub patch 4 safety check became cheap enough.

Several improvements to verifier state logic.
Patch 1 - trivial optimization
Patch 3 - significant optimization for stack state equivalence
Patch 4 - safety check for liveness and prep for future state merging

Alexei Starovoitov (4):
  bpf: speed up stacksafe check
  selftests/bpf: check insn processed in test_verifier
  bpf: improve stacksafe state comparison
  bpf: add self-check logic to liveness analysis

 include/linux/bpf_verifier.h                |   1 +
 kernel/bpf/verifier.c                       | 125 ++++++++++++++++++--
 tools/testing/selftests/bpf/test_verifier.c |  37 +++++-
 3 files changed, 154 insertions(+), 9 deletions(-)

-- 
2.17.1