From patchwork Wed Oct 18 14:40:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Francis Laniel X-Patchwork-Id: 13427204 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5F12C37CA0 for ; Wed, 18 Oct 2023 14:41:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="jj8G1UuN" Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id C4679112; Wed, 18 Oct 2023 07:41:04 -0700 (PDT) Received: from pwmachine.numericable.fr (unknown [188.24.154.80]) by linux.microsoft.com (Postfix) with ESMTPSA id E6C8E20B74C2; Wed, 18 Oct 2023 07:41:01 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com E6C8E20B74C2 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1697640064; bh=xfU7t1LgNcdblzWvppUIKK8lYqVIT5V5QuCHhVdi4XA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jj8G1UuN9Bk/jt7qcdNl+3JbxLcchuZl5ENkdpTuNUHmsmpsB+5UyK3Da+JmSQxRE iByd2j7wE4UOQvR9Pj58rqHZZb03r+jez6TUt9GqPMe+z43DeK3+J5EEri0uGVFWcw IO4XORpsoyWdS8ndO6+MKMW5RVrWhs8Z3mrBTyWo= From: Francis Laniel To: linux-trace-kernel@vger.kernel.org Cc: Masami Hiramatsu , stable@vger.kernel.org, Francis Laniel , Steven Rostedt , Shuah Khan , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH v5 2/2] selftests/ftrace: Add new test case which checks non unique symbol Date: Wed, 18 Oct 2023 17:40:30 +0300 Message-Id: <20231018144030.86885-3-flaniel@linux.microsoft.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231018144030.86885-1-flaniel@linux.microsoft.com> References: <20231018144030.86885-1-flaniel@linux.microsoft.com> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-17.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_PASS,SPF_PASS,USER_IN_DEF_DKIM_WL,USER_IN_DEF_SPF_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net If name_show() is non unique, this test will try to install a kprobe on this function which should fail returning EADDRNOTAVAIL. On kernel where name_show() is not unique, this test is skipped. Signed-off-by: Francis Laniel --- .../ftrace/test.d/kprobe/kprobe_non_uniq_symbol.tc | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_non_uniq_symbol.tc -- 2.34.1 diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_non_uniq_symbol.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_non_uniq_symbol.tc new file mode 100644 index 000000000000..bc9514428dba --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_non_uniq_symbol.tc @@ -0,0 +1,13 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Test failure of registering kprobe on non unique symbol +# requires: kprobe_events + +SYMBOL='name_show' + +# We skip this test on kernel where SYMBOL is unique or does not exist. +if [ "$(grep -c -E "[[:alnum:]]+ t ${SYMBOL}" /proc/kallsyms)" -le '1' ]; then + exit_unsupported +fi + +! echo "p:test_non_unique ${SYMBOL}" > kprobe_events