linux-stable/tools/testing/selftests/bpf/verifier/basic.c
Hao Luo bf88a80a04 selftests/bpf: Fix test_verifier after introducing resolve_pseudo_ldimm64
Commit 4976b718c3 ("bpf: Introduce pseudo_btf_id") switched
the order of check_subprogs() and resolve_pseudo_ldimm() in
the verifier. Now an empty prog expects to see the error "last
insn is not an the prog of a single invalid ldimm exit or jmp"
instead, because the check for subprogs comes first. It's now
pointless to validate that half of ldimm64 won't be the last
instruction.

Tested:
 # ./test_verifier
 Summary: 1129 PASSED, 537 SKIPPED, 0 FAILED
 and the full set of bpf selftests.

Fixes: 4976b718c3 ("bpf: Introduce pseudo_btf_id")
Signed-off-by: Hao Luo <haoluo@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20201007022857.2791884-1-haoluo@google.com
2020-10-06 20:16:57 -07:00

23 lines
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C

{
"empty prog",
.insns = {
},
.errstr = "last insn is not an exit or jmp",
.result = REJECT,
},
{
"only exit insn",
.insns = {
BPF_EXIT_INSN(),
},
.errstr = "R0 !read_ok",
.result = REJECT,
},
{
"no bpf_exit",
.insns = {
BPF_ALU64_REG(BPF_MOV, BPF_REG_0, BPF_REG_2),
},
.errstr = "not an exit",
.result = REJECT,
},