From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2F42EC7619A for ; Mon, 20 Mar 2023 01:02:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231302AbjCTBCn (ORCPT ); Sun, 19 Mar 2023 21:02:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43794 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231428AbjCTBAi (ORCPT ); Sun, 19 Mar 2023 21:00:38 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 01D6422DE0; Sun, 19 Mar 2023 17:57:01 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 0C14AB80D40; Mon, 20 Mar 2023 00:55:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3CA03C433EF; Mon, 20 Mar 2023 00:55:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679273737; bh=jfPyCCKendxLqJk2r+uV5NPBT4BiH9aNkh+tn6Z/fqY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OU/cp+7GXNm9UD7XH5KMVcBgSv/3/Kqcv1r9pqiGUA2KajT3wpADfHgek+ROSmXPr nN8JhKVw6v332tktTZilyIJNIiWCa4+z7gKXxbF14Lu1jfqQCNzIFFYMoQi3oYfizr m+RaoGjhSdHuXPUrFbYWqqyNM4myHFZeqWryj1Xy8lNpyv3SZIvKfNlX855VnvUClx FiPFym/mIJplYObR3rwVZNs27mZe2K0jveVDbrF/ID/ifZwgpsw0J9LJcue4YMJIK+ Zv+pUNC9ikgXb+Y8GGxnM9A65l4xeH+9wgKpa99EbGO1fOST0hY+R0Da/WNrOBH+IJ ivEQUj6vzS1Nw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Lorenz Bauer , Lorenz Bauer , Martin KaFai Lau , Sasha Levin , ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, shuah@kernel.org, yhs@fb.com, eddyz87@gmail.com, sdf@google.com, laoar.shao@gmail.com, memxor@gmail.com, iii@linux.ibm.com, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH AUTOSEL 5.15 07/17] selftests/bpf: check that modifier resolves after pointer Date: Sun, 19 Mar 2023 20:55:09 -0400 Message-Id: <20230320005521.1428820-7-sashal@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230320005521.1428820-1-sashal@kernel.org> References: <20230320005521.1428820-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lorenz Bauer [ Upstream commit dfdd608c3b365f0fd49d7e13911ebcde06b9865b ] Add a regression test that ensures that a VAR pointing at a modifier which follows a PTR (or STRUCT or ARRAY) is resolved correctly by the datasec validator. Signed-off-by: Lorenz Bauer Link: https://lore.kernel.org/r/20230306112138.155352-3-lmb@isovalent.com Signed-off-by: Martin KaFai Lau Signed-off-by: Sasha Levin --- tools/testing/selftests/bpf/prog_tests/btf.c | 28 ++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c index 50afa75bd45b1..2a04dbec510de 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf.c +++ b/tools/testing/selftests/bpf/prog_tests/btf.c @@ -882,6 +882,34 @@ static struct btf_raw_test raw_tests[] = { .btf_load_err = true, .err_str = "Invalid elem", }, +{ + .descr = "var after datasec, ptr followed by modifier", + .raw_types = { + /* .bss section */ /* [1] */ + BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 2), + sizeof(void*)+4), + BTF_VAR_SECINFO_ENC(4, 0, sizeof(void*)), + BTF_VAR_SECINFO_ENC(6, sizeof(void*), 4), + /* int */ /* [2] */ + BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), + /* int* */ /* [3] */ + BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 2), + BTF_VAR_ENC(NAME_TBD, 3, 0), /* [4] */ + /* const int */ /* [5] */ + BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 2), + BTF_VAR_ENC(NAME_TBD, 5, 0), /* [6] */ + BTF_END_RAW, + }, + .str_sec = "\0a\0b\0c\0", + .str_sec_size = sizeof("\0a\0b\0c\0"), + .map_type = BPF_MAP_TYPE_ARRAY, + .map_name = ".bss", + .key_size = sizeof(int), + .value_size = sizeof(void*)+4, + .key_type_id = 0, + .value_type_id = 1, + .max_entries = 1, +}, /* Test member exceeds the size of struct. * * struct A { -- 2.39.2