Merge branch 'bpf-ctx-narrow'

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Yonghong Song says:

====================
bpf: permit bpf program narrower loads for ctx fields

Today, if users try to access a ctx field through a narrower load, e.g.,
__be16 prot = __sk_buff->protocol, verifier will fail.
This set contains the verifier change to permit such loads for
certain ctx fields as well as the new test cases in selftests/bpf.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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David S. Miller 2017-06-14 14:56:26 -04:00

parent a88e2676a6 18f3d6be6b

commit 2fae5d0e64

9 changed files with 324 additions and 86 deletions

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2

include/linux/bpf.h

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1

include/linux/bpf_verifier.h

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71

kernel/bpf/verifier.c

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21

kernel/trace/bpf_trace.c

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56

net/core/filter.c

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3

tools/testing/selftests/bpf/Makefile

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35

tools/testing/selftests/bpf/test_pkt_md_access.c

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21

tools/testing/selftests/bpf/test_progs.c

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200

tools/testing/selftests/bpf/test_verifier.c

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