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bpf: Add BPF_LD_IMM64 to the line_info test 

This patch adds a BPF_LD_IMM64 case to the line_info test
to ensure the kernel rejects linfo_info.insn_off pointing
to the 2nd 8 bytes of the BPF_LD_IMM64.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Martin KaFai Lau 2018-12-19 13:01:02 -08:00 committed by Alexei Starovoitov
parent fdbaa0beb7
commit e30f5640e3
1 changed files with 27 additions and 0 deletions
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27
tools/testing/selftests/bpf/test_btf.c
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@ -4253,6 +4253,33 @@ static struct prog_info_raw_test {
.expected_prog_load_failure = true,
},
{
.descr = "line_info (Zero bpf insn code)",
.raw_types = {
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 64, 8), /* [2] */
BTF_TYPEDEF_ENC(NAME_TBD, 2), /* [3] */
BTF_END_RAW,
},
BTF_STR_SEC("\0int\0unsigned long\0u64\0u64 a=1;\0return a;"),
.insns = {
BPF_LD_IMM64(BPF_REG_0, 1),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
.func_info_cnt = 0,
.line_info = {
BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
BPF_LINE_INFO_ENC(1, 0, 0, 2, 9),
BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 8),
BTF_END_RAW,
},
.line_info_rec_size = sizeof(struct bpf_line_info),
.nr_jited_ksyms = 1,
.err_str = "Invalid insn code at line_info[1]",
.expected_prog_load_failure = true,
},
{
.descr = "line_info (No subprog. zero tailing line_info",
.raw_types = {