bpf: fix 32-bit ALU op verification

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32-bit ALU ops operate on 32-bit values and have 32-bit outputs.
Adjust the verifier accordingly.

Fixes: f1174f77b5 ("bpf/verifier: rework value tracking")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Jann Horn 2017-12-18 20:11:56 -08:00 • committed by Daniel Borkmann

parent 0c17d1d2c6

commit 468f6eafa6

1 changed files with 17 additions and 11 deletions

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kernel/bpf/verifier.c

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