Currently "ALU_END_FROM_BE 32" and "ALU_END_FROM_LE 32" do not test if the upper bits of the result are zeros (the arm64 JIT had such bugs). Extend the two tests to catch this.
Cc: Alexei Starovoitov <a...@plumgrid.com> Signed-off-by: Xi Wang <xi.w...@gmail.com> --- See the arm64 JIT bugs: https://lkml.org/lkml/2015/6/25/721 --- lib/test_bpf.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/lib/test_bpf.c b/lib/test_bpf.c index 7f58c73..9198f28 100644 --- a/lib/test_bpf.c +++ b/lib/test_bpf.c @@ -3674,6 +3674,9 @@ static struct bpf_test tests[] = { .u.insns_int = { BPF_LD_IMM64(R0, 0x0123456789abcdefLL), BPF_ENDIAN(BPF_FROM_BE, R0, 32), + BPF_ALU64_REG(BPF_MOV, R1, R0), + BPF_ALU64_IMM(BPF_RSH, R1, 32), + BPF_ALU32_REG(BPF_ADD, R0, R1), /* R1 = 0 */ BPF_EXIT_INSN(), }, INTERNAL, @@ -3708,6 +3711,9 @@ static struct bpf_test tests[] = { .u.insns_int = { BPF_LD_IMM64(R0, 0x0123456789abcdefLL), BPF_ENDIAN(BPF_FROM_LE, R0, 32), + BPF_ALU64_REG(BPF_MOV, R1, R0), + BPF_ALU64_IMM(BPF_RSH, R1, 32), + BPF_ALU32_REG(BPF_ADD, R0, R1), /* R1 = 0 */ BPF_EXIT_INSN(), }, INTERNAL, -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
