[PATCH 4.19 47/58] selftests/bpf: add "any alignment" annotation for some tests

Greg Kroah-Hartman
2021-06-08T18:43:58Z

From: Björn Töpel <bjorn.topel@gmail.com>

commit e2c6f50e48849298bed694de03cceb537d95cdc4 upstream

RISC-V does, in-general, not have "efficient unaligned access". When
testing the RISC-V BPF JIT, some selftests failed in the verification
due to misaligned access. Annotate these tests with the
F_NEEDS_EFFICIENT_UNALIGNED_ACCESS flag.

Signed-off-by: Björn Töpel <bjorn.topel@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/testing/selftests/bpf/test_verifier.c | 3 +++
1 file changed, 3 insertions(+)

--- a/tools/testing/selftests/bpf/test_verifier.c
+++ b/tools/testing/selftests/bpf/test_verifier.c
@@ -963,6 +963,7 @@ static struct bpf_test tests[] = {
.errstr_unpriv = "attempt to corrupt spilled",
.errstr = "corrupted spill",
.result = REJECT,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"invalid src register in STX",
@@ -1777,6 +1778,7 @@ static struct bpf_test tests[] = {
.errstr = "invalid bpf_context access",
.result = REJECT,
.prog_type = BPF_PROG_TYPE_SK_MSG,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"invalid read past end of SK_MSG",
@@ -2176,6 +2178,7 @@ static struct bpf_test tests[] = {
},
.errstr = "invalid bpf_context access",
.result = REJECT,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"check skb->hash half load not permitted, unaligned 3",