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| author | Hou Tao <houtao1@huawei.com> | 2022-08-10 16:05:38 +0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-08-10 10:12:48 -0700 |
| commit | c5c0981fd81d35233d625631f13000544c108c53 (patch) | |
| tree | c52167a536ba9d17dff5c4762b881bfaafd49899 /tools | |
| parent | 939a1a946d755c1565e18694e278e9ba7ba19ccc (diff) | |
| download | linux-c5c0981fd81d35233d625631f13000544c108c53.tar.gz linux-c5c0981fd81d35233d625631f13000544c108c53.tar.bz2 linux-c5c0981fd81d35233d625631f13000544c108c53.zip | |
selftests/bpf: Ensure sleepable program is rejected by hash map iter
Add a test to ensure sleepable program is rejected by hash map iterator.
Signed-off-by: Hou Tao <houtao1@huawei.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20220810080538.1845898-10-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/bpf_iter.c | 6 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/bpf_iter_bpf_hash_map.c | 9 |
2 files changed, 15 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c index 1571a6586b3b..e89685bd587c 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c @@ -679,6 +679,12 @@ static void test_bpf_hash_map(void) goto out; } + /* Sleepable program is prohibited for hash map iterator */ + linfo.map.map_fd = map_fd; + link = bpf_program__attach_iter(skel->progs.sleepable_dummy_dump, &opts); + if (!ASSERT_ERR_PTR(link, "attach_sleepable_prog_to_iter")) + goto out; + linfo.map.map_fd = map_fd; link = bpf_program__attach_iter(skel->progs.dump_bpf_hash_map, &opts); if (!ASSERT_OK_PTR(link, "attach_iter")) diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_hash_map.c b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_hash_map.c index 0aa3cd34cbe3..d7a69217fb68 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_hash_map.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_hash_map.c @@ -112,3 +112,12 @@ int dump_bpf_hash_map(struct bpf_iter__bpf_map_elem *ctx) return 0; } + +SEC("iter.s/bpf_map_elem") +int sleepable_dummy_dump(struct bpf_iter__bpf_map_elem *ctx) +{ + if (ctx->meta->seq_num == 0) + BPF_SEQ_PRINTF(ctx->meta->seq, "map dump starts\n"); + + return 0; +} |