From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f42.google.com (mail-wr1-f42.google.com [209.85.221.42]) (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 392367A for ; Thu, 3 Mar 2022 09:21:47 +0000 (UTC) Received: by mail-wr1-f42.google.com with SMTP id ay10so6779294wrb.6 for ; Thu, 03 Mar 2022 01:21:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=BpU36O5a1YaG6Ho/MMUFqJJcfUg/Kx5iTTzj05VGdEI=; b=H2iqEjoGI0mUd4DB8Vp1/0SGsge96yQ1rtfOtY4VOcxM4n5wP/zUghPYoi7IhBtscR 94pBcKIZ/pTyU3DZ/ABAUEte4tnQmh37gnQkK3deOx+sRnZ9MRUjT7C9QKDkyc2KncG9 quPY9hslsMBz59WeYe4qEUIFqKmaDJB5luPSm52fpKa4NOVrTaXei/YYk0aKFj9vmYdv YO2zpXjT5ivVSdk1nBIgLgYB2jk+hsnHRjZdIN7Wu1UuC4IhdPqJxRVMr+vQEB8FYjlu XA6+1DFvkfvpQf6glyXYNaO1xu/6d6qR3hdNLY9jpr22CMInvxnH4jv4sOXlPwoqXJrK jBuw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=BpU36O5a1YaG6Ho/MMUFqJJcfUg/Kx5iTTzj05VGdEI=; b=0fZhL5RB48zw9MY42/GZwrqwyiC2npXrcHZvyEc9pMX+6qnSS0QJM2zp//j/EPKU+5 8nYQmtZiCJPlspIaLf/rgEXTz2J+/lO6mke+J9P7lsm2SicQrlYrQ6J2/JzO4I3Zv+2w ki/F9e8REsyjYTTCoeGF2zzZ+C5KI6C8YxpySU2qpRQWnV0N5P/VO+UUz7hf6GE71Rrq fzNJfxRuy1my14MA7S82X07k5aDIb4E5WwTLw9V2PiKJOfqhZcZQs0mOYlEAIuoU64c5 ouNM618AUoqVaBy3qkxtjZKWlAyHvtWJAeDJtPZGTr3TX9jZAiVHVQ81NUEItCC2dYUW 1xIQ== X-Gm-Message-State: AOAM531XtzQk5+bXEGc5lxF3xkTILEklH4rPpkTMAxOoNo1HumQQgM0z BIbIwtVl2pfAdHbxkL0qmFtD5evF74QlLtPYupuOdQ== X-Google-Smtp-Source: ABdhPJyo/tBPMi81OvH3XVNEsDr9A4Qx46p9PVGCzWdv4zHPWbdRkCKBx5LelcuRgFFis4thWh3nYiUlGk4vFG/uOwg= X-Received: by 2002:adf:910a:0:b0:1ed:c3fc:2dcf with SMTP id j10-20020adf910a000000b001edc3fc2dcfmr26125526wrj.430.1646299305322; Thu, 03 Mar 2022 01:21:45 -0800 (PST) Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20220227184517.504931-1-keescook@chromium.org> In-Reply-To: <20220227184517.504931-1-keescook@chromium.org> From: David Gow Date: Thu, 3 Mar 2022 17:21:33 +0800 Message-ID: Subject: Re: [PATCH v3 0/7] Convert overflow and stackinit to KUnit To: Kees Cook Cc: "Gustavo A. R. Silva" , Nathan Chancellor , Nick Desaulniers , Rasmus Villemoes , Vitor Massaru Iha , Daniel Latypov , Anton Ivanov , Jeff Dike , Richard Weinberger , Masahiro Yamada , Arnd Bergmann , Linux Kernel Mailing List , linux-um , linux-kbuild@vger.kernel.org, KUnit Development , llvm@lists.linux.dev, x86@kernel.org, linux-hardening@vger.kernel.org Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="0000000000004f529005d94cedd8" --0000000000004f529005d94cedd8 Content-Type: text/plain; charset="UTF-8" On Mon, Feb 28, 2022 at 2:45 AM Kees Cook wrote: > > Hi, > > These changes all build on each other, so I'm sending this as a series > to hopefully reduce confusion. I chose "v3" because it seemed the least > confusing of various options. > > The um changes are needed to get Clang building with um to test the > stackinit KUnit test more easily (i.e. needing neither GCC 12 nor QEMU). > > -Kees > > David Gow (2): > um: Cleanup syscall_handler_t definition/cast, fix warning > um: Remove unused timeval_to_ns() function > > Kees Cook (5): > overflow: Provide constant expression struct_size > lib: overflow: Convert to Kunit > um: Allow builds with Clang > lib: stackinit: Convert to KUnit > UAPI: Introduce KUnit userspace compatibility > > arch/um/os-Linux/execvp.c | 1 + > arch/um/os-Linux/time.c | 6 - > arch/x86/um/shared/sysdep/syscalls_64.h | 5 +- > arch/x86/um/user-offsets.c | 9 +- > include/linux/overflow.h | 10 +- > include/uapi/misc/kunit.h | 181 +++++++ > lib/Kconfig.debug | 38 +- > lib/Makefile | 6 +- > lib/{test_overflow.c => overflow_kunit.c} | 562 +++++++++----------- > lib/{test_stackinit.c => stackinit_kunit.c} | 268 ++++------ > scripts/Makefile.clang | 1 + > 11 files changed, 593 insertions(+), 494 deletions(-) > create mode 100644 include/uapi/misc/kunit.h > rename lib/{test_overflow.c => overflow_kunit.c} (54%) > rename lib/{test_stackinit.c => stackinit_kunit.c} (67%) > > -- Thanks for putting all of these together. Apart from some minor checkpatch warnings (some of which are inevitable, some of which are trivial "don't put a space here" things) and an issue with the KUnit userspace compatibility layer misreporting failed suites, this all worked pretty well on my machine. (There's also still a warning with -mno-global-merge on uml USER_CFLAGS users which shows up with clang, but that's a minor issue at best. I've sent out a patch to fix it up, though I'm not 100% convinced it's the right solution: https://lore.kernel.org/linux-kselftest/20220303090643.241747-1-davidgow@google.com/ ) Otherwise, this series is: Tested-by: David Gow (And, as a note to anyone else trying to apply it on another branch, it has a prerequisite of: https://lore.kernel.org/linux-hardening/20220124232342.3113350-1-keescook@chromium.org/ ) Cheers, -- David --0000000000004f529005d94cedd8 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIPnwYJKoZIhvcNAQcCoIIPkDCCD4wCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg ggz5MIIEtjCCA56gAwIBAgIQeAMYYHb81ngUVR0WyMTzqzANBgkqhkiG9w0BAQsFADBMMSAwHgYD VQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UE AxMKR2xvYmFsU2lnbjAeFw0yMDA3MjgwMDAwMDBaFw0yOTAzMTgwMDAwMDBaMFQxCzAJBgNVBAYT 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linux-um-bounces+geert=linux-m68k.org@lists.infradead.org To: Kees Cook Cc: "Gustavo A. R. Silva" , Nathan Chancellor , Nick Desaulniers , Rasmus Villemoes , Vitor Massaru Iha , Daniel Latypov , Anton Ivanov , Jeff Dike , Richard Weinberger , Masahiro Yamada , Arnd Bergmann , Linux Kernel Mailing List , linux-um , linux-kbuild@vger.kernel.org, KUnit Development , llvm@lists.linux.dev, x86@kernel.org, linux-hardening@vger.kernel.org --===============4883302176173241001== Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="0000000000004f6a5005d94ced73" --0000000000004f6a5005d94ced73 Content-Type: text/plain; charset="UTF-8" On Mon, Feb 28, 2022 at 2:45 AM Kees Cook wrote: > > Hi, > > These changes all build on each other, so I'm sending this as a series > to hopefully reduce confusion. I chose "v3" because it seemed the least > confusing of various options. > > The um changes are needed to get Clang building with um to test the > stackinit KUnit test more easily (i.e. needing neither GCC 12 nor QEMU). > > -Kees > > David Gow (2): > um: Cleanup syscall_handler_t definition/cast, fix warning > um: Remove unused timeval_to_ns() function > > Kees Cook (5): > overflow: Provide constant expression struct_size > lib: overflow: Convert to Kunit > um: Allow builds with Clang > lib: stackinit: Convert to KUnit > UAPI: Introduce KUnit userspace compatibility > > arch/um/os-Linux/execvp.c | 1 + > arch/um/os-Linux/time.c | 6 - > arch/x86/um/shared/sysdep/syscalls_64.h | 5 +- > arch/x86/um/user-offsets.c | 9 +- > include/linux/overflow.h | 10 +- > include/uapi/misc/kunit.h | 181 +++++++ > lib/Kconfig.debug | 38 +- > lib/Makefile | 6 +- > lib/{test_overflow.c => overflow_kunit.c} | 562 +++++++++----------- > lib/{test_stackinit.c => stackinit_kunit.c} | 268 ++++------ > scripts/Makefile.clang | 1 + > 11 files changed, 593 insertions(+), 494 deletions(-) > create mode 100644 include/uapi/misc/kunit.h > rename lib/{test_overflow.c => overflow_kunit.c} (54%) > rename lib/{test_stackinit.c => stackinit_kunit.c} (67%) > > -- Thanks for putting all of these together. Apart from some minor checkpatch warnings (some of which are inevitable, some of which are trivial "don't put a space here" things) and an issue with the KUnit userspace compatibility layer misreporting failed suites, this all worked pretty well on my machine. (There's also still a warning with -mno-global-merge on uml USER_CFLAGS users which shows up with clang, but that's a minor issue at best. I've sent out a patch to fix it up, though I'm not 100% convinced it's the right solution: https://lore.kernel.org/linux-kselftest/20220303090643.241747-1-davidgow@google.com/ ) Otherwise, this series is: Tested-by: David Gow (And, as a note to anyone else trying to apply it on another branch, it has a prerequisite of: https://lore.kernel.org/linux-hardening/20220124232342.3113350-1-keescook@chromium.org/ ) Cheers, -- David --0000000000004f6a5005d94ced73 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIPnwYJKoZIhvcNAQcCoIIPkDCCD4wCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg ggz5MIIEtjCCA56gAwIBAgIQeAMYYHb81ngUVR0WyMTzqzANBgkqhkiG9w0BAQsFADBMMSAwHgYD VQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UE AxMKR2xvYmFsU2lnbjAeFw0yMDA3MjgwMDAwMDBaFw0yOTAzMTgwMDAwMDBaMFQxCzAJBgNVBAYT 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