Ack. Sent one with just deletion.
Hao
On Tue, Oct 6, 2020 at 7:04 PM Alexei Starovoitov
<alexei.starovoitov@xxxxxxxxx> wrote:
>
> On Tue, Oct 06, 2020 at 06:23:13PM -0700, Hao Luo wrote:
> > Commit 4976b718c355 ("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: 4976b718c355 ("bpf: Introduce pseudo_btf_id")
> > Signed-off-by: Hao Luo <haoluo@xxxxxxxxxx>
> > ---
> > Changelog in v2:
> > - Remove the original test_verifier ld_imm64 test4
> > - Updated commit message.
> >
> > tools/testing/selftests/bpf/verifier/basic.c | 2 +-
> > .../testing/selftests/bpf/verifier/ld_imm64.c | 24 +++++++------------
> > 2 files changed, 9 insertions(+), 17 deletions(-)
> >
> > diff --git a/tools/testing/selftests/bpf/verifier/basic.c b/tools/testing/selftests/bpf/verifier/basic.c
> > index b8d18642653a..de84f0d57082 100644
> > --- a/tools/testing/selftests/bpf/verifier/basic.c
> > +++ b/tools/testing/selftests/bpf/verifier/basic.c
> > @@ -2,7 +2,7 @@
> > "empty prog",
> > .insns = {
> > },
> > - .errstr = "unknown opcode 00",
> > + .errstr = "last insn is not an exit or jmp",
> > .result = REJECT,
> > },
> > {
> > diff --git a/tools/testing/selftests/bpf/verifier/ld_imm64.c b/tools/testing/selftests/bpf/verifier/ld_imm64.c
> > index 3856dba733e9..ed6a34991216 100644
> > --- a/tools/testing/selftests/bpf/verifier/ld_imm64.c
> > +++ b/tools/testing/selftests/bpf/verifier/ld_imm64.c
> > @@ -54,21 +54,13 @@
> > "test5 ld_imm64",
> > .insns = {
> > BPF_RAW_INSN(BPF_LD | BPF_IMM | BPF_DW, 0, 0, 0, 0),
> > - },
> > - .errstr = "invalid bpf_ld_imm64 insn",
> > - .result = REJECT,
> > -},
> > -{
> > - "test6 ld_imm64",
> > - .insns = {
> > - BPF_RAW_INSN(BPF_LD | BPF_IMM | BPF_DW, 0, 0, 0, 0),
> > BPF_RAW_INSN(0, 0, 0, 0, 0),
> > BPF_EXIT_INSN(),
> > },
> > .result = ACCEPT,
> > },
> > {
> > - "test7 ld_imm64",
> > + "test6 ld_imm64",
> > .insns = {
> > BPF_RAW_INSN(BPF_LD | BPF_IMM | BPF_DW, 0, 0, 0, 1),
> > BPF_RAW_INSN(0, 0, 0, 0, 1),
> > @@ -78,7 +70,7 @@
> > .retval = 1,
> > },
> > {
> > - "test8 ld_imm64",
> > + "test7 ld_imm64",
>
> imo that's too much churn to rename all of them.
> Just delete one.
