selftests/bpf: add verifier tests for wide stores

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Make sure that wide stores are allowed at proper (aligned) addresses.
Note that user_ip6 is naturally aligned on 8-byte boundary, so
correct addresses are user_ip6[0] and user_ip6[2]. msg_src_ip6 is,
however, aligned on a 4-byte bondary, so only msg_src_ip6[1]
can be wide-stored.

Cc: Andrii Nakryiko <andriin@fb.com>
Cc: Yonghong Song <yhs@fb.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Stanislav Fomichev 2019-07-01 10:38:41 -07:00 • committed by Daniel Borkmann

parent 4cfacbe6df

commit 76d950773c

2 changed files with 50 additions and 3 deletions

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17

tools/testing/selftests/bpf/test_verifier.c

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36

tools/testing/selftests/bpf/verifier/wide_store.c

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