From: Xing Guo Date: Thu, 16 Oct 2025 03:53:30 +0000 (+0800) Subject: selftests: arg_parsing: Ensure data is flushed to disk before reading. X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=0c1999ed33722f85476a248186d6e0eb2bf3dd2a;p=users%2Fhch%2Fmisc.git selftests: arg_parsing: Ensure data is flushed to disk before reading. test_parse_test_list_file writes some data to /tmp/bpf_arg_parsing_test.XXXXXX and parse_test_list_file() will read the data back. However, after writing data to that file, we forget to call fsync() and it's causing testing failure in my laptop. This patch helps fix it by adding the missing fsync() call. Fixes: 64276f01dce8 ("selftests/bpf: Test_progs can read test lists from file") Signed-off-by: Xing Guo Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20251016035330.3217145-1-higuoxing@gmail.com --- diff --git a/tools/testing/selftests/bpf/prog_tests/arg_parsing.c b/tools/testing/selftests/bpf/prog_tests/arg_parsing.c index fbf0d9c2f58b..e27d66b75fb1 100644 --- a/tools/testing/selftests/bpf/prog_tests/arg_parsing.c +++ b/tools/testing/selftests/bpf/prog_tests/arg_parsing.c @@ -144,6 +144,9 @@ static void test_parse_test_list_file(void) if (!ASSERT_OK(ferror(fp), "prepare tmp")) goto out_fclose; + if (!ASSERT_OK(fsync(fileno(fp)), "fsync tmp")) + goto out_fclose; + init_test_filter_set(&set); if (!ASSERT_OK(parse_test_list_file(tmpfile, &set, true), "parse file"))