Merge branch 'bpf-map-val-as-key'

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Paul Chaignon says:

====================
Currently, helpers that expect ARG_PTR_TO_MAP_KEY and ARG_PTR_TO_MAP_VALUE
can only access stack and packet memory.  This patchset allows these
helpers to directly access map values by passing registers of type
PTR_TO_MAP_VALUE.

The first patch changes the verifier; the second adds new test cases.

The first three versions of this patchset were sent on the iovisor-dev
mailing list only.

Changelogs:
  Changes in v5:
    - Refactor using check_helper_mem_access.
  Changes in v4:
    - Rebase.
  Changes in v3:
    - Bug fixes.
    - Negative test cases.
  Changes in v2:
    - Additional test cases for adjusted maps.
====================

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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This commit is contained in:

Daniel Borkmann 2018-04-24 22:39:14 +02:00

parent 0e25d14e5f 5f90dd6aae

commit 68db35b125

2 changed files with 273 additions and 17 deletions

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24

kernel/bpf/verifier.c

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266

tools/testing/selftests/bpf/test_verifier.c

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