[Kernel] Re: [PATCH OpenHarmony-4.19 02/17] bpf, selftests: Fix up some test_verifier cases for unprivileged

在 2021/7/31 11:14, Yu Changchun 写道:

From: Piotr Krysiuk

stable inclusion from linux-4.19.193 commit 1982f436a9a990e338ac4d7ed80a9fb40e0a1885 category: bugfix issue: #I42H19 CVE: NA

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commit 0a13e3537ea67452d549a6a80da3776d6b7dedb3 upstream

Fix up test_verifier error messages for the case where the original error message changed, or for the case where pointer alu errors differ between privileged and unprivileged tests. Also, add alternative tests for keeping coverage of the original verifier rejection error message (fp alu), and newly reject map_ptr += rX where rX == 0 given we now forbid alu on these types for unprivileged. All test_verifier cases pass after the change. The test case fixups were kept separate to ease backporting of core changes.

Signed-off-by: Piotr Krysiuk Co-developed-by: Daniel Borkmann Signed-off-by: Daniel Borkmann Acked-by: Alexei Starovoitov [OP: backport to 4.19, skipping non-existent tests] Signed-off-by: Ovidiu Panait Signed-off-by: Greg Kroah-Hartman Signed-off-by: Yang Yingliang Signed-off-by: Yu Changchun --- tools/testing/selftests/bpf/test_verifier.c | 42 ++++++++++++++++----- 1 file changed, 33 insertions(+), 9 deletions(-)

Looks good to me