test: bpf: extend "load 64-bit immediate" testcase
Extend the testcase to catch a signedness bug in the arm64 JIT: test_bpf: #58 load 64-bit immediate jited:1 ret -1 != 1 FAIL (1 times) This is useful to ensure other JITs won't have a similar bug. Link: https://lkml.org/lkml/2015/5/8/458 Cc: Alexei Starovoitov <ast@plumgrid.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Xi Wang <xi.wang@gmail.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1755,7 +1755,8 @@ static struct bpf_test tests[] = {
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BPF_EXIT_INSN(),
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BPF_EXIT_INSN(),
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BPF_JMP_IMM(BPF_JEQ, R3, 0x1234, 1),
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BPF_JMP_IMM(BPF_JEQ, R3, 0x1234, 1),
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BPF_EXIT_INSN(),
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BPF_EXIT_INSN(),
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BPF_ALU64_IMM(BPF_MOV, R0, 1),
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BPF_LD_IMM64(R0, 0x1ffffffffLL),
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BPF_ALU64_IMM(BPF_RSH, R0, 32), /* R0 = 1 */
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BPF_EXIT_INSN(),
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BPF_EXIT_INSN(),
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},
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},
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INTERNAL,
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INTERNAL,
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