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authorTyrone Wu <wudevelops@gmail.com>2024-10-11 00:08:03 +0000
committerAndrii Nakryiko <andrii@kernel.org>2024-10-10 19:11:28 -0700
commitb836cbdf3b81a4a22b3452186efa2e5105a77e10 (patch)
treee8ab78470cdacf7e5c4607faf6d3bc761413c0ed /tools
parentad6b5b6ea9b764018249285a4fe0a2226bef4caa (diff)
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@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20241011000803.681190-2-wudevelops@gmail.com
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/bpf/prog_tests/fill_link_info.c9
1 files changed, 9 insertions, 0 deletions
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);