diff mbox series

[bpf,v5,2/2] selftests/bpf: fix perf_event link info name_len assertion

Message ID 20241006195131.563006-2-wudevelops@gmail.com (mailing list archive)
State Superseded
Delegated to: BPF
Headers show
Series [bpf,v5,1/2] bpf: fix unpopulated name_len field in perf_event link info | expand

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Commit Message

Tyrone Wu Oct. 6, 2024, 7:51 p.m. UTC 
Fix `name_len` field assertions in `bpf_link_info.perf_event` for
kprobe/uprobe/tracepoint to validate correct name size instead of 0.

Link: https://lore.kernel.org/bpf/CABVU1kXwQXhqQGe0RTrr7eegtM6SVW_KayZBy16-yb0Snztmtg@mail.gmail.com/
Fixes: 23cf7aa539dc ("selftests/bpf: Add selftest for fill_link_info")
Signed-off-by: tyrone-wu <wudevelops@gmail.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
---
V4 -> V5: no change

V3 -> V4:
Link: https://lore.kernel.org/bpf/Zv_PP6Gs5cq3W2Ey@krava/
- Split patch into separate kernel and selftest change

 tools/testing/selftests/bpf/prog_tests/fill_link_info.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Comments

Yafang Shao Oct. 7, 2024, 2:09 a.m. UTC | #1 
On Mon, Oct 7, 2024 at 3:51 AM tyrone-wu <wudevelops@gmail.com> wrote:
>
> Fix `name_len` field assertions in `bpf_link_info.perf_event` for
> kprobe/uprobe/tracepoint to validate correct name size instead of 0.
>
> Link: https://lore.kernel.org/bpf/CABVU1kXwQXhqQGe0RTrr7eegtM6SVW_KayZBy16-yb0Snztmtg@mail.gmail.com/
> Fixes: 23cf7aa539dc ("selftests/bpf: Add selftest for fill_link_info")
> Signed-off-by: tyrone-wu <wudevelops@gmail.com>
> Acked-by: Jiri Olsa <jolsa@kernel.org>

Acked-by: Yafang Shao <laoar.shao@gmail.com>

> ---
> V4 -> V5: no change
>
> V3 -> V4:
> Link: https://lore.kernel.org/bpf/Zv_PP6Gs5cq3W2Ey@krava/
> - Split patch into separate kernel and selftest change
>
>  tools/testing/selftests/bpf/prog_tests/fill_link_info.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 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 f3932941bbaa..59077f260404 100644
> --- a/tools/testing/selftests/bpf/prog_tests/fill_link_info.c
> +++ b/tools/testing/selftests/bpf/prog_tests/fill_link_info.c
> @@ -67,8 +67,8 @@ static int verify_perf_link_info(int fd, enum bpf_perf_event_type type, long add
>
>                 ASSERT_EQ(info.perf_event.kprobe.cookie, PERF_EVENT_COOKIE, "kprobe_cookie");
>
> +               ASSERT_EQ(info.perf_event.kprobe.name_len, strlen(KPROBE_FUNC) + 1, "name_len");
>                 if (!info.perf_event.kprobe.func_name) {
> -                       ASSERT_EQ(info.perf_event.kprobe.name_len, 0, "name_len");
>                         info.perf_event.kprobe.func_name = ptr_to_u64(&buf);
>                         info.perf_event.kprobe.name_len = sizeof(buf);
>                         goto again;
> @@ -79,8 +79,8 @@ static int verify_perf_link_info(int fd, enum bpf_perf_event_type type, long add
>                 ASSERT_EQ(err, 0, "cmp_kprobe_func_name");
>                 break;
>         case BPF_PERF_EVENT_TRACEPOINT:
> +               ASSERT_EQ(info.perf_event.tracepoint.name_len, strlen(TP_NAME) + 1, "name_len");
>                 if (!info.perf_event.tracepoint.tp_name) {
> -                       ASSERT_EQ(info.perf_event.tracepoint.name_len, 0, "name_len");
>                         info.perf_event.tracepoint.tp_name = ptr_to_u64(&buf);
>                         info.perf_event.tracepoint.name_len = sizeof(buf);
>                         goto again;
> @@ -96,8 +96,8 @@ static int verify_perf_link_info(int fd, enum bpf_perf_event_type type, long add
>         case BPF_PERF_EVENT_URETPROBE:
>                 ASSERT_EQ(info.perf_event.uprobe.offset, offset, "uprobe_offset");
>
> +               ASSERT_EQ(info.perf_event.uprobe.name_len, strlen(UPROBE_FILE) + 1, "name_len");
>                 if (!info.perf_event.uprobe.file_name) {
> -                       ASSERT_EQ(info.perf_event.uprobe.name_len, 0, "name_len");
>                         info.perf_event.uprobe.file_name = ptr_to_u64(&buf);
>                         info.perf_event.uprobe.name_len = sizeof(buf);
>                         goto again;
> --
> 2.43.0
>
diff mbox series

Patch

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 f3932941bbaa..59077f260404 100644
--- a/tools/testing/selftests/bpf/prog_tests/fill_link_info.c
+++ b/tools/testing/selftests/bpf/prog_tests/fill_link_info.c
@@ -67,8 +67,8 @@  static int verify_perf_link_info(int fd, enum bpf_perf_event_type type, long add
 
 		ASSERT_EQ(info.perf_event.kprobe.cookie, PERF_EVENT_COOKIE, "kprobe_cookie");
 
+		ASSERT_EQ(info.perf_event.kprobe.name_len, strlen(KPROBE_FUNC) + 1, "name_len");
 		if (!info.perf_event.kprobe.func_name) {
-			ASSERT_EQ(info.perf_event.kprobe.name_len, 0, "name_len");
 			info.perf_event.kprobe.func_name = ptr_to_u64(&buf);
 			info.perf_event.kprobe.name_len = sizeof(buf);
 			goto again;
@@ -79,8 +79,8 @@  static int verify_perf_link_info(int fd, enum bpf_perf_event_type type, long add
 		ASSERT_EQ(err, 0, "cmp_kprobe_func_name");
 		break;
 	case BPF_PERF_EVENT_TRACEPOINT:
+		ASSERT_EQ(info.perf_event.tracepoint.name_len, strlen(TP_NAME) + 1, "name_len");
 		if (!info.perf_event.tracepoint.tp_name) {
-			ASSERT_EQ(info.perf_event.tracepoint.name_len, 0, "name_len");
 			info.perf_event.tracepoint.tp_name = ptr_to_u64(&buf);
 			info.perf_event.tracepoint.name_len = sizeof(buf);
 			goto again;
@@ -96,8 +96,8 @@  static int verify_perf_link_info(int fd, enum bpf_perf_event_type type, long add
 	case BPF_PERF_EVENT_URETPROBE:
 		ASSERT_EQ(info.perf_event.uprobe.offset, offset, "uprobe_offset");
 
+		ASSERT_EQ(info.perf_event.uprobe.name_len, strlen(UPROBE_FILE) + 1, "name_len");
 		if (!info.perf_event.uprobe.file_name) {
-			ASSERT_EQ(info.perf_event.uprobe.name_len, 0, "name_len");
 			info.perf_event.uprobe.file_name = ptr_to_u64(&buf);
 			info.perf_event.uprobe.name_len = sizeof(buf);
 			goto again;