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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6D010C282D0 for ; Wed, 5 Mar 2025 02:17:43 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 7FC2D6B0099; Tue, 4 Mar 2025 21:17:37 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 7AA38280001; Tue, 4 Mar 2025 21:17:37 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5FC3E6B009B; Tue, 4 Mar 2025 21:17:37 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 405356B0099 for ; Tue, 4 Mar 2025 21:17:37 -0500 (EST) Received: from smtpin08.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id B4C9AC0936 for ; Wed, 5 Mar 2025 02:17:36 +0000 (UTC) X-FDA: 83185886112.08.7E11299 Received: from mail-ej1-f46.google.com (mail-ej1-f46.google.com [209.85.218.46]) by imf24.hostedemail.com (Postfix) with ESMTP id C42DE180003 for ; Wed, 5 Mar 2025 02:17:34 +0000 (UTC) Authentication-Results: imf24.hostedemail.com; dkim=pass header.d=chromium.org header.s=google header.b=lpkvYsNh; dmarc=pass (policy=none) header.from=chromium.org; spf=pass (imf24.hostedemail.com: domain of jeffxu@chromium.org designates 209.85.218.46 as permitted sender) smtp.mailfrom=jeffxu@chromium.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1741141054; a=rsa-sha256; cv=none; b=AolCcFuzTWQ8iB6R0u57HL38EzGkQslwEXqoXOAwybdjDww2yIM9VhZGhlWyeBxgTgJsMx CXE3fhlF+B6o7FZuHC8dcNExzYYtVUQ9s3DFhW0J9OOLMd5k9Bfi5FZjVkeN2YwCwnJii4 TR6FnNGzTsub++OpfyLgPqFObx1lhLE= ARC-Authentication-Results: i=1; imf24.hostedemail.com; dkim=pass header.d=chromium.org header.s=google header.b=lpkvYsNh; dmarc=pass (policy=none) header.from=chromium.org; spf=pass (imf24.hostedemail.com: domain of jeffxu@chromium.org designates 209.85.218.46 as permitted sender) smtp.mailfrom=jeffxu@chromium.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1741141054; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=pcCXP5+9u/FLOTwAJWuE/Eiiwb6Tr4w/nKcMIQwNMtE=; b=6rPt+Z9QjoOsgLAtwK9bIpOKk6SwDYKArXKt/Ru97RWk2B+vKCcJ1N0zrdhbDvr6/NUoXI xIdtApRCxLzlEJ6XVM/PS++3Z2FDOR667oXPI2QxvdH7qoDZsl50zsrIctf9syHi3Ow3ZL RpYcBqpFm4ymRN5suMFCgiE8R+xzmoI= Received: by mail-ej1-f46.google.com with SMTP id a640c23a62f3a-abf675756b8so55096566b.0 for ; Tue, 04 Mar 2025 18:17:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1741141053; x=1741745853; darn=kvack.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=pcCXP5+9u/FLOTwAJWuE/Eiiwb6Tr4w/nKcMIQwNMtE=; b=lpkvYsNhKwQWk0AXQBj8NkveNnXJm3Ok5uYVgjxRH1XpWMCmRLXQhHZio6uYAYY7xR njVj5hpGYM+4TQr4ZMewoG94cMs9dHOfEulBdVIXEHnAJKU8OoJp6vmGCSSUqzQKipkO DykqB0dRxDJqvL4RlRPJOMobp9RadrsCFzBJg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1741141053; x=1741745853; 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=pcCXP5+9u/FLOTwAJWuE/Eiiwb6Tr4w/nKcMIQwNMtE=; b=XmDIL25FQ+YFU79iPaPbytkrxu20AQ7WXmpdm4U7L3BZLYUfVouxmTlv8xZmdBDiTs OjEkeIyj+f5qp1lNqoMmlcd/JmkDdPvKlV+MgwE3HE+UhLzbrCNWV9Wwvaj82OwGy6oB qMMuBeMvCe6bXmuraJBakm1r48wuSMzFlgigYNKtY4EtVxvWindTx3jsg+KJoMW3iYga BT5VnWvgzDfbTQQY8XqSsYofMs3kgWUrFpOyc7biFJMCzCgkeX1mTTNtDVBS4gXD/Dpj dcrafWmxUctTPKQhx2rDzTSJvIJ+SthxZzc65O2Yjz91AfVfUV7o3OaGjGBU/CqvdO/B VqNQ== X-Forwarded-Encrypted: i=1; AJvYcCUzWQeaC9RNiqweoAaz1CB28BJcVTU+a8QJzBtxjDTrPQfHfIYJlMUme0brQF4suvfs9sHNAR5BDQ==@kvack.org X-Gm-Message-State: AOJu0YyYxSsnmPq7XvA6bz9bUCnLfSw+XjxO6XI4iWXqtwzB60ivm/QY +azD+PIBQmYOmpWpcJTVrWVMO8rrI2Y3hmJ2Vo3u9tGURkkq5WZOJKo8Fh4Dlw== X-Gm-Gg: ASbGncsHUT7EMs3gaD1eDEpu3+oKdZsqjqJ5sEpJPIPX+BH41SrjCBL0aoDlcyAf1DV Um8bLQ766Xc+D6rCEmEpb3EXOEadCYfVVF/hFtTYBjp95cOghax/GWKdciYFP0lBJT+KIn+/BLN Ujc/yw1eGaO76ogbQTBeXVdR4BwhY1a/Xk+NftjQgFyQIb2QuwUIIlJeJoR4tVqJQSfyJ+LdK1q kC/lrE0FyPrl4xQ6UACNC+FfidVoqWaExTiX0CSJ6FIIQMuqoGKifXxa6r/33qlst8SAowZYhpO 4zWPNk6t8oWyKWPMbtuGPlnj2d+FSIDqzbcyfGlL8Iwr94Bw7oJxRVrkfmGPXHnV3YXG329JYyI y X-Google-Smtp-Source: AGHT+IF66plIcsj14Sd9utRPSZXYkhyhx8Xszzbcm4MTAIg/x5pKqpJrtPh/c/C2SNaU4l/Ayi6xCg== X-Received: by 2002:a05:6402:2693:b0:5e4:d499:5e1 with SMTP id 4fb4d7f45d1cf-5e59f3747a9mr478745a12.1.1741141053293; Tue, 04 Mar 2025 18:17:33 -0800 (PST) Received: from cfish.c.googlers.com.com (40.162.204.35.bc.googleusercontent.com. [35.204.162.40]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5e4c43a55besm8891211a12.72.2025.03.04.18.17.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Mar 2025 18:17:32 -0800 (PST) From: jeffxu@chromium.org To: akpm@linux-foundation.org, keescook@chromium.org, jannh@google.com, torvalds@linux-foundation.org, vbabka@suse.cz, lorenzo.stoakes@oracle.com, Liam.Howlett@Oracle.com, adhemerval.zanella@linaro.org, oleg@redhat.com, avagin@gmail.com, benjamin@sipsolutions.net Cc: linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, jorgelo@chromium.org, sroettger@google.com, hch@lst.de, ojeda@kernel.org, thomas.weissschuh@linutronix.de, adobriyan@gmail.com, johannes@sipsolutions.net, pedro.falcato@gmail.com, hca@linux.ibm.com, willy@infradead.org, anna-maria@linutronix.de, mark.rutland@arm.com, linus.walleij@linaro.org, Jason@zx2c4.com, deller@gmx.de, rdunlap@infradead.org, davem@davemloft.net, peterx@redhat.com, f.fainelli@gmail.com, gerg@kernel.org, dave.hansen@linux.intel.com, mingo@kernel.org, ardb@kernel.org, mhocko@suse.com, 42.hyeyoo@gmail.com, peterz@infradead.org, ardb@google.com, enh@google.com, rientjes@google.com, groeck@chromium.org, mpe@ellerman.id.au, aleksandr.mikhalitsyn@canonical.com, mike.rapoport@gmail.com, Jeff Xu Subject: [PATCH v9 7/7] selftest: test system mappings are sealed. Date: Wed, 5 Mar 2025 02:17:11 +0000 Message-ID: <20250305021711.3867874-8-jeffxu@google.com> X-Mailer: git-send-email 2.48.1.711.g2feabab25a-goog In-Reply-To: <20250305021711.3867874-1-jeffxu@google.com> References: <20250305021711.3867874-1-jeffxu@google.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: C42DE180003 X-Stat-Signature: d16fhwnifqrhugom31t9gbaew98qk11j X-Rspam-User: X-Rspamd-Server: rspam05 X-HE-Tag: 1741141054-259445 X-HE-Meta: U2FsdGVkX191lhfXapRkFAV8GD03UsrHzqIJYHyL6X8t0MelagROGIJfDy0R9iNeXrhrY2LYLXQZNu8RvIjHxodApt+yHDzQPHmWy51Zp0c1KPZrXQyRl2vH6/cKU3OkVYMArSlTHby7gYiYSG8PCYVPxo76XkeFQk8FYeAYF/lVEkxyKanAJCE+YqzvGJkrEv6SSvvGDhhaHuZ+GtR5+x0w/177UpJdjV8qPKs2MWPiL6ECfiBOqlw7fw6oztuqsnRIyYX8SarR1rGasdOj+k9jBIFyAYhoWKfBFRcuD5IEDOzJ2ffo2YPEunzh34PW6JC+z3DMosTBWkOZ6/KB8E0Y8wv2U2WvjbyZa2szOcsMPXw14j2KU9JaArUmHfxrQNuByzcxWFhLvPiniQ3XozBU/AWrJOCpUGwZRdqPZ6hs4nsgmt2Slth7SsY3heAxplhFD9eMYbXuYr52ZQsriw1elT+fH6jsbamfdHx3VXPDtFuK5eGEISwkpju4yobc+Wx9S6wlxWrH2BaPHT/5O11zpKx99mXvMPWYu3dav4To28MpH+XbTO2hu0vGqS1q2k1Vsj50VAkDL+3fnHSv4naQUTDzJURDFlFZFH6GM/44r/YPWfsTxnJK1asWCNa+4oDlukgzrKHEm6fT4qiPs3tFzAcz0HCKTG8Ybqia4sA6eNGMUgjx1RkYY0OFuvJDJ2fLNGaUTZ/Z3IlyOjsGuFe9IwYPG/dBdr1cfxoxFAvo6/++gryYLnl+3lSSv+KVUqZr5F605BhevYFFgHUY/FTc5+IdWyhcV+h+gXab+gBfvbq4SjRK14bY8bvJzP4adbLasyEMfL1GZG+GrdPXWy8YuL6oSJQW7TzK4lF8yyF87YoMAMwOTcvZJt7jMniNlH3a5op4/d0d5/AnjVMDOdPXM8lR8o3+0RYmZZmK3IUMYpxZ0FQgVTcW4Fs1uqgq4OmmOdqW+PmoSWEgGf6 J/8LEQHM wHQiclozMNNYjzqiKhmgan/xc0XnvwbfQssuyyqIKdYHGPlbARJGgckq9jjZbC4269+IVLxSCNWF4Pp2M55PBqdKe9gTUg5DuOoIYrUDAlVxFAcoXt80wvibvii3t4oAIp56z9HIibiLO9HGltdWFCpn00KxBNSSu2WCUiz+dqKDYXHANAyEFP4XSjdJkeapC0O82lYTHMtduzRktnxHujvXfDsNr9WoUlHrFsiH22y4OgjEtGlSHnZ13kyfTKqlY18VXtzsDI4n0/gqquaQ66ajasEifpgrAMTKdThYiMAkPgK93H5H6uMeONXQuv5QpkGEwtcH1mzhi0WFjFomCHviLr9J7emeJEgIoxRIpNdypnAC7m2989ZNKArY63N0jDcrzgYw+9dLkTns= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000296, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Jeff Xu Add sysmap_is_sealed.c to test system mappings are sealed. Note: CONFIG_MSEAL_SYSTEM_MAPPINGS must be set, as indicated in config file. Signed-off-by: Jeff Xu Reviewed-by: Lorenzo Stoakes --- tools/testing/selftests/Makefile | 1 + .../mseal_system_mappings/.gitignore | 2 + .../selftests/mseal_system_mappings/Makefile | 6 + .../selftests/mseal_system_mappings/config | 1 + .../mseal_system_mappings/sysmap_is_sealed.c | 119 ++++++++++++++++++ 5 files changed, 129 insertions(+) create mode 100644 tools/testing/selftests/mseal_system_mappings/.gitignore create mode 100644 tools/testing/selftests/mseal_system_mappings/Makefile create mode 100644 tools/testing/selftests/mseal_system_mappings/config create mode 100644 tools/testing/selftests/mseal_system_mappings/sysmap_is_sealed.c diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index 8daac70c2f9d..be836be8f03f 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -61,6 +61,7 @@ TARGETS += mount TARGETS += mount_setattr TARGETS += move_mount_set_group TARGETS += mqueue +TARGETS += mseal_system_mappings TARGETS += nci TARGETS += net TARGETS += net/af_unix diff --git a/tools/testing/selftests/mseal_system_mappings/.gitignore b/tools/testing/selftests/mseal_system_mappings/.gitignore new file mode 100644 index 000000000000..319c497a595e --- /dev/null +++ b/tools/testing/selftests/mseal_system_mappings/.gitignore @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +sysmap_is_sealed diff --git a/tools/testing/selftests/mseal_system_mappings/Makefile b/tools/testing/selftests/mseal_system_mappings/Makefile new file mode 100644 index 000000000000..2b4504e2f52f --- /dev/null +++ b/tools/testing/selftests/mseal_system_mappings/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0-only +CFLAGS += -std=c99 -pthread -Wall $(KHDR_INCLUDES) + +TEST_GEN_PROGS := sysmap_is_sealed + +include ../lib.mk diff --git a/tools/testing/selftests/mseal_system_mappings/config b/tools/testing/selftests/mseal_system_mappings/config new file mode 100644 index 000000000000..675cb9f37b86 --- /dev/null +++ b/tools/testing/selftests/mseal_system_mappings/config @@ -0,0 +1 @@ +CONFIG_MSEAL_SYSTEM_MAPPINGS=y diff --git a/tools/testing/selftests/mseal_system_mappings/sysmap_is_sealed.c b/tools/testing/selftests/mseal_system_mappings/sysmap_is_sealed.c new file mode 100644 index 000000000000..0d2af30c3bf5 --- /dev/null +++ b/tools/testing/selftests/mseal_system_mappings/sysmap_is_sealed.c @@ -0,0 +1,119 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * test system mappings are sealed when + * KCONFIG_MSEAL_SYSTEM_MAPPINGS=y + */ + +#define _GNU_SOURCE +#include +#include +#include +#include +#include + +#include "../kselftest.h" +#include "../kselftest_harness.h" + +#define VMFLAGS "VmFlags:" +#define MSEAL_FLAGS "sl" +#define MAX_LINE_LEN 512 + +bool has_mapping(char *name, FILE *maps) +{ + char line[MAX_LINE_LEN]; + + while (fgets(line, sizeof(line), maps)) { + if (strstr(line, name)) + return true; + } + + return false; +} + +bool mapping_is_sealed(char *name, FILE *maps) +{ + char line[MAX_LINE_LEN]; + + while (fgets(line, sizeof(line), maps)) { + if (!strncmp(line, VMFLAGS, strlen(VMFLAGS))) { + if (strstr(line, MSEAL_FLAGS)) + return true; + + return false; + } + } + + return false; +} + +FIXTURE(basic) { + FILE *maps; +}; + +FIXTURE_SETUP(basic) +{ + self->maps = fopen("/proc/self/smaps", "r"); + if (!self->maps) + SKIP(return, "Could not open /proc/self/smap, errno=%d", + errno); +}; + +FIXTURE_TEARDOWN(basic) +{ + if (self->maps) + fclose(self->maps); +}; + +FIXTURE_VARIANT(basic) +{ + char *name; + bool sealed; +}; + +FIXTURE_VARIANT_ADD(basic, vdso) { + .name = "[vdso]", + .sealed = true, +}; + +FIXTURE_VARIANT_ADD(basic, vvar) { + .name = "[vvar]", + .sealed = true, +}; + +FIXTURE_VARIANT_ADD(basic, vvar_vclock) { + .name = "[vvar_vclock]", + .sealed = true, +}; + +FIXTURE_VARIANT_ADD(basic, sigpage) { + .name = "[sigpage]", + .sealed = true, +}; + +FIXTURE_VARIANT_ADD(basic, vectors) { + .name = "[vectors]", + .sealed = true, +}; + +FIXTURE_VARIANT_ADD(basic, uprobes) { + .name = "[uprobes]", + .sealed = true, +}; + +FIXTURE_VARIANT_ADD(basic, stack) { + .name = "[stack]", + .sealed = false, +}; + +TEST_F(basic, check_sealed) +{ + if (!has_mapping(variant->name, self->maps)) { + SKIP(return, "could not find the mapping, %s", + variant->name); + } + + EXPECT_EQ(variant->sealed, + mapping_is_sealed(variant->name, self->maps)); +}; + +TEST_HARNESS_MAIN -- 2.48.1.711.g2feabab25a-goog