From patchwork Fri Oct 4 15:40:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: tyrone-wu X-Patchwork-Id: 832858 Received: from mail-yb1-f174.google.com (mail-yb1-f174.google.com [209.85.219.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D2F3B1D9A6F; Fri, 4 Oct 2024 15:40:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.174 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728056421; cv=none; b=Sv2FgCEHrEXEgdXrUBUv2HdgmVRMlhyL7Zs/dSABBIuumtZwN2kmoF523uwsg/RoRh4lo/1y3wUxnab2h9W2tMYcMlu8LSKnzp5zRJ21JoEb3r1/n/DIAD/GcuujZErAg2RfgjPNBFiwhzcwixT1j6DYBfs7OuMp3zB9Xsu/ov0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728056421; c=relaxed/simple; bh=OySBO2fdgm9NInb3HLtlVZ9DT5rqfr4CjyzaYKoX3HQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=m7H6MWWYib8bN1nE/TBfTWRhyCIskcZ+brgb2x7a51E6B6FdetIvu1+lPHCOnUsDAqLr+aaQm4cz1zZcsrw2231V2RmSf5pILnOALqvpwUkn1tRhuMdUEQeAWQL/8K7b0i/j/RBjAoEp9+GNadNEki3L6iyqDObigJh8l3h1hWE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=RMlonaRN; arc=none smtp.client-ip=209.85.219.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="RMlonaRN" Received: by mail-yb1-f174.google.com with SMTP id 3f1490d57ef6-e25e4023cafso1755555276.2; Fri, 04 Oct 2024 08:40:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1728056419; x=1728661219; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=GNfDutvQ2rKfjQOG2zcCXcBclmjuCvlaQWSIPQ4D/Ng=; b=RMlonaRNP8WXJUE+TCATelDCiPgTheKgi+OtnYaeJUPK8MBnW0c2VENxLVkLN1hsF0 mpMZ2Hwg/CGaScx62CerFpZM8YupAW0MQ5aUITB6fS9LbUWT2m8AQEDtiFHR51JIhxfk Bu2Q58fkon/qHh9RUGFja9DbmvNqc3as2P6z/CfhfMaTRRiu418Of3QXITuSZJvq0Dq1 +YrEfegoq0exObqK4/RTaXCeKBBdF7FJYmZe8TIqvEv/6l4rUzo8vX6CZ7x3TOBRdW2L 0io3BDVDy7hLjeOA4SqiO9L10llhXpDznXjNcF1SA8+W9IRVPkb/dHCqv8zI9sCeS8eH bkXQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728056419; x=1728661219; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=GNfDutvQ2rKfjQOG2zcCXcBclmjuCvlaQWSIPQ4D/Ng=; b=oP99qZci4zpGOhnxUzO5vjfDiyxEmix42FGZS0rqJfoLbFIgtNWAluGQecybxYJPC4 EFVzSRTqlOEvdcfB0LYBx7YgjaEwgLoBv04w4RhTLoDBb+s+8vt5WUe7WwPw815fp2r1 VtcCMuDqvHUOH5GJXlpt2JjnbWe7BjLk+GUDoDn6zH0LhIFtgInhAU+VeDYYfs4Wb9GA VgVDx9DZnUMfFsDZOEMOb3svrQQflPJ60CjsGu4B8OZeygW0pkiAPJHJaOZ6nkza2Tfh Q+e70wF479mS0qKUfabAcX9zdA7XnGSuPMGPWl6jObVZOoCWGDnC3Cqfwxm4ZuVrB9Mh v6VA== X-Forwarded-Encrypted: i=1; AJvYcCUWz8PuBJj6TImnMTyYnhJTxbCYgFfgaan+DoxzRK7fIEmKZZC2H4tKDra+FIpXPlvCgVQaGDR0Ii+A6+xt/f/T@vger.kernel.org, AJvYcCWFTh9iZxYGvtaL00SORbpkWzYKQiPVuocbbTJ77zC+A425znpvNBt4P6IiEakyFUdO/9aAOZvBl8K2kVhH@vger.kernel.org, AJvYcCXXu8WRJkS6lc2QI4gLHfORlLkUlWFJX0kfLvRcgQQz/t5KLBv6pgC//HwiPsN66A/EOZ4=@vger.kernel.org X-Gm-Message-State: AOJu0Yz7esL2K/bjfnQabDEW5BZfv59ewRFn0lopvOS7LZboMBvUL3qK zF9T8S65Nd/9NW09XN5QYasMlUDRgBESoK8sIhzU7YM9j3al/+4I X-Google-Smtp-Source: AGHT+IFXt8KkAyFmo7MmvW7gQumVXcw0rlAOCqK+TX6tSIAyGU+AnrIQn/iu8EPyg9c/UT8GbyN6FQ== X-Received: by 2002:a05:6902:200b:b0:e25:ce91:52da with SMTP id 3f1490d57ef6-e2893922427mr2093664276.39.1728056418745; Fri, 04 Oct 2024 08:40:18 -0700 (PDT) Received: from dev-ubuntu-0.. (104-15-236-76.lightspeed.rlghnc.sbcglobal.net. [104.15.236.76]) by smtp.googlemail.com with ESMTPSA id 3f1490d57ef6-e2885d2ae37sm628475276.20.2024.10.04.08.40.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Oct 2024 08:40:18 -0700 (PDT) From: tyrone-wu To: olsajiri@gmail.com, wudevelops@gmail.com Cc: andrii.nakryiko@gmail.com, andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, eddyz87@gmail.com, haoluo@google.com, john.fastabend@gmail.com, kernel-patches-bot@fb.com, kpsingh@kernel.org, laoar.shao@gmail.com, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, martin.lau@linux.dev, mykolal@fb.com, sdf@fomichev.me, shuah@kernel.org, song@kernel.org, yonghong.song@linux.dev, Jiri Olsa Subject: [PATCH bpf v4 2/2] selftests/bpf: fix perf_event link info name_len assertion Date: Fri, 4 Oct 2024 15:40:02 +0000 Message-ID: <20241004154002.10979-2-wudevelops@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241004154002.10979-1-wudevelops@gmail.com> References: <20241004154002.10979-1-wudevelops@gmail.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Fix `name_len` field assertions in `bpf_link_info.perf_event` for kprobe/uprobe/tracepoint to validate correct name size instead of 0. Link: https://lore.kernel.org/bpf/CABVU1kXwQXhqQGe0RTrr7eegtM6SVW_KayZBy16-yb0Snztmtg@mail.gmail.com/ Fixes: 23cf7aa539dc ("selftests/bpf: Add selftest for fill_link_info") Signed-off-by: tyrone-wu Acked-by: Jiri Olsa --- V3 -> V4: Link: https://lore.kernel.org/bpf/Zv_PP6Gs5cq3W2Ey@krava/ - Split patch into separate kernel and selftest change tools/testing/selftests/bpf/prog_tests/fill_link_info.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/fill_link_info.c b/tools/testing/selftests/bpf/prog_tests/fill_link_info.c index f3932941bbaa..59077f260404 100644 --- a/tools/testing/selftests/bpf/prog_tests/fill_link_info.c +++ b/tools/testing/selftests/bpf/prog_tests/fill_link_info.c @@ -67,8 +67,8 @@ static int verify_perf_link_info(int fd, enum bpf_perf_event_type type, long add ASSERT_EQ(info.perf_event.kprobe.cookie, PERF_EVENT_COOKIE, "kprobe_cookie"); + ASSERT_EQ(info.perf_event.kprobe.name_len, strlen(KPROBE_FUNC) + 1, "name_len"); if (!info.perf_event.kprobe.func_name) { - ASSERT_EQ(info.perf_event.kprobe.name_len, 0, "name_len"); info.perf_event.kprobe.func_name = ptr_to_u64(&buf); info.perf_event.kprobe.name_len = sizeof(buf); goto again; @@ -79,8 +79,8 @@ static int verify_perf_link_info(int fd, enum bpf_perf_event_type type, long add ASSERT_EQ(err, 0, "cmp_kprobe_func_name"); break; case BPF_PERF_EVENT_TRACEPOINT: + ASSERT_EQ(info.perf_event.tracepoint.name_len, strlen(TP_NAME) + 1, "name_len"); if (!info.perf_event.tracepoint.tp_name) { - ASSERT_EQ(info.perf_event.tracepoint.name_len, 0, "name_len"); info.perf_event.tracepoint.tp_name = ptr_to_u64(&buf); info.perf_event.tracepoint.name_len = sizeof(buf); goto again; @@ -96,8 +96,8 @@ static int verify_perf_link_info(int fd, enum bpf_perf_event_type type, long add case BPF_PERF_EVENT_URETPROBE: ASSERT_EQ(info.perf_event.uprobe.offset, offset, "uprobe_offset"); + ASSERT_EQ(info.perf_event.uprobe.name_len, strlen(UPROBE_FILE) + 1, "name_len"); if (!info.perf_event.uprobe.file_name) { - ASSERT_EQ(info.perf_event.uprobe.name_len, 0, "name_len"); info.perf_event.uprobe.file_name = ptr_to_u64(&buf); info.perf_event.uprobe.name_len = sizeof(buf); goto again;