[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20241011000803.681190-2-wudevelops@gmail.com>
Date: Fri, 11 Oct 2024 00:08:03 +0000
From: Tyrone Wu <wudevelops@...il.com>
To: andrii.nakryiko@...il.com
Cc: andrii@...nel.org,
ast@...nel.org,
bpf@...r.kernel.org,
daniel@...earbox.net,
eddyz87@...il.com,
haoluo@...gle.com,
john.fastabend@...il.com,
jolsa@...nel.org,
kernel-patches-bot@...com,
kpsingh@...nel.org,
linux-kernel@...r.kernel.org,
linux-kselftest@...r.kernel.org,
linux-trace-kernel@...r.kernel.org,
martin.lau@...ux.dev,
mathieu.desnoyers@...icios.com,
mattbobrowski@...gle.com,
mhiramat@...nel.org,
mykolal@...com,
rostedt@...dmis.org,
sdf@...ichev.me,
shuah@...nel.org,
song@...nel.org,
wudevelops@...il.com,
yonghong.song@...ux.dev
Subject: [PATCH bpf v2 2/2] selftests/bpf: assert link info uprobe_multi count & path_size if unset
Add assertions in `bpf_link_info.uprobe_multi` test to verify that
`count` and `path_size` fields are correctly populated when the fields
are unset.
This tests a previous bug where the `path_size` field was not populated
when `path` and `path_size` were unset.
Signed-off-by: Tyrone Wu <wudevelops@...il.com>
---
V1 -> V2:
- Verify bpf_link_get_info_by_fd was successful before continuing with test
tools/testing/selftests/bpf/prog_tests/fill_link_info.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/tools/testing/selftests/bpf/prog_tests/fill_link_info.c b/tools/testing/selftests/bpf/prog_tests/fill_link_info.c
index 745c5ada4c4b..d50cbd8040d4 100644
--- a/tools/testing/selftests/bpf/prog_tests/fill_link_info.c
+++ b/tools/testing/selftests/bpf/prog_tests/fill_link_info.c
@@ -420,6 +420,15 @@ verify_umulti_link_info(int fd, bool retprobe, __u64 *offsets,
if (!ASSERT_NEQ(err, -1, "readlink"))
return -1;
+ memset(&info, 0, sizeof(info));
+ err = bpf_link_get_info_by_fd(fd, &info, &len);
+ if (!ASSERT_OK(err, "bpf_link_get_info_by_fd"))
+ return -1;
+
+ ASSERT_EQ(info.uprobe_multi.count, 3, "info.uprobe_multi.count");
+ ASSERT_EQ(info.uprobe_multi.path_size, strlen(path) + 1,
+ "info.uprobe_multi.path_size");
+
for (bit = 0; bit < 8; bit++) {
memset(&info, 0, sizeof(info));
info.uprobe_multi.path = ptr_to_u64(path_buf);
--
2.43.0
Powered by blists - more mailing lists