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Date: Sat, 9 May 2015 04:14:30 -0400 From: Xi Wang <xi.wang@...il.com> To: netdev@...r.kernel.org Cc: "David S. Miller" <davem@...emloft.net>, linux-kernel@...r.kernel.org, Xi Wang <xi.wang@...il.com>, Alexei Starovoitov <ast@...mgrid.com>, Will Deacon <will.deacon@....com> Subject: [PATCH net-next] 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@...mgrid.com> Cc: Will Deacon <will.deacon@....com> Signed-off-by: Xi Wang <xi.wang@...il.com> --- lib/test_bpf.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/test_bpf.c b/lib/test_bpf.c index f2c23ffaa6d7..3c41049d72d8 100644 --- a/lib/test_bpf.c +++ b/lib/test_bpf.c @@ -1755,7 +1755,8 @@ static struct bpf_test tests[] = { BPF_EXIT_INSN(), BPF_JMP_IMM(BPF_JEQ, R3, 0x1234, 1), BPF_EXIT_INSN(), - BPF_ALU64_IMM(BPF_MOV, R0, 1), + BPF_LD_IMM64(R0, 0x1ffffffffLL), + BPF_ALU64_IMM(BPF_RSH, R0, 32), /* R0 = 1 */ BPF_EXIT_INSN(), }, INTERNAL, -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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