bpf/verifier: reject invalid LD_ABS | BPF_DW instruction

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[ Upstream commit d82bccc690 ]

verifier must check for reserved size bits in instruction opcode and
reject BPF_LD | BPF_ABS | BPF_DW and BPF_LD | BPF_IND | BPF_DW instructions,
otherwise interpreter will WARN_RATELIMIT on them during execution.

Fixes: ddd872bc30 ("bpf: verifier: add checks for BPF_ABS | BPF_IND instructions")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Alexei Starovoitov 2016-04-12 10:26:19 -07:00 • committed by Greg Kroah-Hartman

parent 5c136901ef

commit 8427d5547d

1 changed files with 1 additions and 0 deletions

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kernel/bpf/verifier.c

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