Hi

I apologize for the confusion.

I mistakenly thought that my previous email (https://lore.kernel.org/all/20240820023447.29002-1-hao.ge@linux.dev/)

didn't send due to network issues on my computer, so I resent it.

However, it seems that was not the case.

Please kindly disregard this patch as it is identical to the previous one.

I sincerely apologize for wasting everyone's time

On 8/20/24 10:36, Hao Ge wrote:

From: Hao Ge gehao@kylinos.cn

Smatch reported the following warning: ./tools/testing/selftests/bpf/testing_helpers.c:455 get_xlated_program() warn: variable dereferenced before check 'buf' (see line 454)

It seems correct,so let's modify it based on it's suggestion.

Actually,commit b23ed4d74c4d ("selftests/bpf: Fix invalid pointer check in get_xlated_program()") fixed an issue in the test_verifier.c once,but it was reverted this time.

Let's solve this issue with the minimal changes possible.

Reported-by: Dan Carpenter dan.carpenter@linaro.org Closes: https://lore.kernel.org/all/1eb3732f-605a-479d-ba64-cd14250cbf91@stanley.mou... Fixes: b4b7a4099b8c ("selftests/bpf: Factor out get_xlated_program() helper") Signed-off-by: Hao Ge gehao@kylinos.cn

---

tools/testing/selftests/bpf/testing_helpers.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/testing_helpers.c b/tools/testing/selftests/bpf/testing_helpers.c index d5379a0e6da8..34dfea295c8e 100644 --- a/tools/testing/selftests/bpf/testing_helpers.c +++ b/tools/testing/selftests/bpf/testing_helpers.c @@ -451,7 +451,7 @@ int get_xlated_program(int fd_prog, struct bpf_insn **buf, __u32 *cnt) *cnt = xlated_prog_len / buf_element_size; *buf = calloc(*cnt, buf_element_size);

• if (!buf) {

• if (!*buf) { perror("can't allocate xlated program buffer"); return -ENOMEM; }

Thanks

Best regards

Hao