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charset="utf-8" Extend snprintf negative tests to cover pointer specifiers to prevent possible invalid handling of %p% from happening again. ./test_progs -t snprintf #302/1 snprintf/snprintf_positive:OK #302/2 snprintf/snprintf_negative:OK #302 snprintf:OK #303 snprintf_btf:OK Summary: 2/2 PASSED, 0 SKIPPED, 0 FAILED Co-developed-by: Nikita Marushkin Signed-off-by: Nikita Marushkin Signed-off-by: Ilya Shchipletsov Acked-by: Yonghong Song Acked-by: Florent Revest --- tools/testing/selftests/bpf/prog_tests/snprintf.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/snprintf.c b/tools/test= ing/selftests/bpf/prog_tests/snprintf.c index 4be6fdb78c6a..b5b6371e09bb 100644 --- a/tools/testing/selftests/bpf/prog_tests/snprintf.c +++ b/tools/testing/selftests/bpf/prog_tests/snprintf.c @@ -116,6 +116,21 @@ static void test_snprintf_negative(void) ASSERT_ERR(load_single_snprintf("%llc"), "invalid specifier 7"); ASSERT_ERR(load_single_snprintf("\x80"), "non ascii character"); ASSERT_ERR(load_single_snprintf("\x1"), "non printable character"); + + ASSERT_OK(load_single_snprintf("valid %p"), "valid usage"); + + ASSERT_ERR(load_single_snprintf("%p%"), "too many specifiers 1"); + ASSERT_ERR(load_single_snprintf("%pK%"), "too many specifiers 2"); + ASSERT_ERR(load_single_snprintf("%px%"), "too many specifiers 3"); + ASSERT_ERR(load_single_snprintf("%ps%"), "too many specifiers 4"); + ASSERT_ERR(load_single_snprintf("%pS%"), "too many specifiers 5"); + ASSERT_ERR(load_single_snprintf("%pB%"), "too many specifiers 6"); + ASSERT_ERR(load_single_snprintf("%pi4%"), "too many specifiers 7"); + ASSERT_ERR(load_single_snprintf("%pI4%"), "too many specifiers 8"); + ASSERT_ERR(load_single_snprintf("%pi6%"), "too many specifiers 9"); + ASSERT_ERR(load_single_snprintf("%pI6%"), "too many specifiers 10"); + ASSERT_ERR(load_single_snprintf("%pks%"), "too many specifiers 11"); + ASSERT_ERR(load_single_snprintf("%pus%"), "too many specifiers 12"); } =20 void test_snprintf(void) --=20 2.43.0