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 X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 84172C43381 for ; Tue, 19 Feb 2019 17:24:58 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C39662083B for ; Tue, 19 Feb 2019 17:24:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=c-s.fr header.i=@c-s.fr header.b="QDqw8lsp" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C39662083B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=c-s.fr Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 443nfv1Z3VzDqK6 for ; Wed, 20 Feb 2019 04:24:55 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=c-s.fr (client-ip=93.17.236.30; helo=pegase1.c-s.fr; envelope-from=christophe.leroy@c-s.fr; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=c-s.fr Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=c-s.fr header.i=@c-s.fr header.b="QDqw8lsp"; dkim-atps=neutral Received: from pegase1.c-s.fr (pegase1.c-s.fr [93.17.236.30]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 443ncx0BV9zDqFs for ; Wed, 20 Feb 2019 04:23:11 +1100 (AEDT) Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 443ncn3pcGz9v4wg; Tue, 19 Feb 2019 18:23:05 +0100 (CET) Authentication-Results: localhost; dkim=pass reason="1024-bit key; insecure key" header.d=c-s.fr header.i=@c-s.fr header.b=QDqw8lsp; dkim-adsp=pass; dkim-atps=neutral X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id 29MNh-RSs4TH; Tue, 19 Feb 2019 18:23:05 +0100 (CET) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 443ncn25p7z9v4wf; Tue, 19 Feb 2019 18:23:05 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1550596985; bh=16mOsQibzOyuKGmlufxdiVA6zEatWjg8A75/MDif08w=; h=From:Subject:To:Cc:Date:From; b=QDqw8lspfArU8pC6Zsu6V60jBblcrtfo1iG1+2NlOLuNtQTgR8aOlUWSvXB03S4hU gTY9fNshHtqw+378+7NQvD/fcPzzOdtD2gSl26Ys9jtiUdO7xLDFkHwIE5HJfKlWEx odOIlDHrl6sUnLVra2hedOP2WelQgsj7/EsEIjqo= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id E29858B7FE; Tue, 19 Feb 2019 18:23:06 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id o-2HJ7YHlKai; Tue, 19 Feb 2019 18:23:06 +0100 (CET) Received: from po16846vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 94FB78B7F9; Tue, 19 Feb 2019 18:23:06 +0100 (CET) Received: by po16846vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 5FAF96E81D; Tue, 19 Feb 2019 17:23:06 +0000 (UTC) Message-Id: From: Christophe Leroy Subject: [PATCH v6 0/6] KASAN for powerpc/32 To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Nicholas Piggin , Aneesh Kumar K.V , Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Daniel Axtens Date: Tue, 19 Feb 2019 17:23:06 +0000 (UTC) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" This serie adds KASAN support to powerpc/32 Tested on nohash/32 (8xx) and book3s/32 (mpc832x ie 603). Boot tested on qemu mac99 Changes in v6: - Fixed oops on module loading (due to access to RO shadow zero area). - Added support for hash book3s/32, thanks to Daniel's patch to differ KASAN activation. - Reworked handling of optimised string functions (dedicated patch for it) - Reordered some files to ease adding of book3e/64 support. Changes in v5: - Added KASAN_SHADOW_OFFSET in Makefile, otherwise we fallback to KASAN_MINIMAL and some stuff like stack instrumentation is not performed - Moved calls to kasan_early_init() in head.S because stack instrumentation in machine_init was performed before the call to kasan_early_init() - Mapping kasan_early_shadow_page RW in kasan_early_init() and remaping RO later in kasan_init() - Allocating a big memblock() for shadow area, falling back to PAGE_SIZE blocks in case of failure. Changes in v4: - Comments from Andrey (DISABLE_BRANCH_PROFILING, Activation of reports) - Proper initialisation of shadow area in kasan_init() - Panic in case Hash table is required. - Added comments in patch one to explain why *t = *s becomes memcpy(t, s, ...) - Call of kasan_init_tags() Changes in v3: - Removed the printk() in kasan_early_init() to avoid build failure (see https://github.com/linuxppc/issues/issues/218) - Added necessary changes in asm/book3s/32/pgtable.h to get it work on powerpc 603 family - Added a few KASAN_SANITIZE_xxx.o := n to successfully boot on powerpc 603 family Changes in v2: - Rebased. - Using __set_pte_at() to build the early table. - Worked around and got rid of the patch adding asm/page.h in asm/pgtable-types.h ==> might be fixed independently but not needed for this serie. For book3s/32 we have to stick to KASAN_MINIMAL because Hash table management is not active early enough at the time being. Christophe Leroy (6): powerpc/mm: prepare kernel for KAsan on PPC32 powerpc/32: Move early_init() in a separate file powerpc: prepare string/mem functions for KASAN powerpc/32: Add KASAN support kasan: allow architectures to provide an outline readiness check powerpc/32: enable CONFIG_KASAN for book3s hash arch/powerpc/Kconfig | 1 + arch/powerpc/Makefile | 9 ++ arch/powerpc/include/asm/book3s/32/pgtable.h | 2 + arch/powerpc/include/asm/highmem.h | 10 +- arch/powerpc/include/asm/kasan.h | 51 ++++++++ arch/powerpc/include/asm/nohash/32/pgtable.h | 2 + arch/powerpc/include/asm/setup.h | 5 + arch/powerpc/include/asm/string.h | 26 +++- arch/powerpc/kernel/Makefile | 11 +- arch/powerpc/kernel/asm-offsets.c | 4 + arch/powerpc/kernel/cputable.c | 13 +- arch/powerpc/kernel/early_32.c | 36 ++++++ arch/powerpc/kernel/head_32.S | 3 + arch/powerpc/kernel/head_40x.S | 3 + arch/powerpc/kernel/head_44x.S | 3 + arch/powerpc/kernel/head_8xx.S | 3 + arch/powerpc/kernel/head_fsl_booke.S | 3 + arch/powerpc/kernel/prom_init_check.sh | 10 +- arch/powerpc/kernel/setup-common.c | 2 + arch/powerpc/kernel/setup_32.c | 28 ----- arch/powerpc/lib/Makefile | 16 ++- arch/powerpc/lib/copy_32.S | 13 +- arch/powerpc/lib/mem_64.S | 8 +- arch/powerpc/lib/memcpy_64.S | 4 +- arch/powerpc/mm/Makefile | 1 + arch/powerpc/mm/kasan/Makefile | 5 + arch/powerpc/mm/kasan/kasan_init_32.c | 170 ++++++++++++++++++++++++++ arch/powerpc/mm/mem.c | 4 + arch/powerpc/mm/ptdump/dump_linuxpagetables.c | 8 ++ arch/powerpc/purgatory/Makefile | 3 + arch/powerpc/xmon/Makefile | 1 + include/linux/kasan.h | 4 + mm/kasan/generic.c | 3 + 33 files changed, 412 insertions(+), 53 deletions(-) create mode 100644 arch/powerpc/include/asm/kasan.h create mode 100644 arch/powerpc/kernel/early_32.c create mode 100644 arch/powerpc/mm/kasan/Makefile create mode 100644 arch/powerpc/mm/kasan/kasan_init_32.c -- 2.13.3