From patchwork Tue Jun 27 14:43:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julia Lawall X-Patchwork-Id: 13294628 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 49F74EB64DC for ; Tue, 27 Jun 2023 14:45:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231747AbjF0Op0 (ORCPT ); Tue, 27 Jun 2023 10:45:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43732 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232067AbjF0Ooz (ORCPT ); Tue, 27 Jun 2023 10:44:55 -0400 Received: from mail2-relais-roc.national.inria.fr (mail2-relais-roc.national.inria.fr [192.134.164.83]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1CD33358A; Tue, 27 Jun 2023 07:44:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=inria.fr; s=dc; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=lz+eaKXjltZfgC96+KOEH+DiV357kqzsKaP1ME9j9JM=; b=YpuufV72ER5dSm9wrYSnJ+nyISX1oQx33v1s2pGZoMDoTbTZApc/Qnr+ jWRuBVmLvwZwmibFQ5jrR1vtZ5noOKi7DSKRNrP0U1BZ9FCltFGcibx6p ck1ThN0OMstSb7PrPLh1Mq91rYGjkQ4mlVR9Zej3KEIn+kL4eNkAXPzxE c=; Authentication-Results: mail2-relais-roc.national.inria.fr; dkim=none (message not signed) header.i=none; spf=SoftFail smtp.mailfrom=Julia.Lawall@inria.fr; dmarc=fail (p=none dis=none) d=inria.fr X-IronPort-AV: E=Sophos;i="6.01,162,1684792800"; d="scan'208";a="114936315" Received: from i80.paris.inria.fr (HELO i80.paris.inria.fr.) ([128.93.90.48]) by mail2-relais-roc.national.inria.fr with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jun 2023 16:43:51 +0200 From: Julia Lawall To: linux-hyperv@vger.kernel.org Cc: kernel-janitors@vger.kernel.org, keescook@chromium.org, christophe.jaillet@wanadoo.fr, kuba@kernel.org, kasan-dev@googlegroups.com, Andrey Konovalov , Dmitry Vyukov , iommu@lists.linux.dev, linux-tegra@vger.kernel.org, Robin Murphy , Krishna Reddy , virtualization@lists.linux-foundation.org, Xuan Zhuo , linux-scsi@vger.kernel.org, linaro-mm-sig@lists.linaro.org, linux-media@vger.kernel.org, John Stultz , Brian Starkey , Laura Abbott , Liam Mark , Benjamin Gaignard , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Shailend Chand , linux-rdma@vger.kernel.org, mhi@lists.linux.dev, linux-arm-msm@vger.kernel.org, linux-btrfs@vger.kernel.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, Dave Hansen , "H. Peter Anvin" , linux-sgx@vger.kernel.org Subject: [PATCH v2 00/24] use vmalloc_array and vcalloc Date: Tue, 27 Jun 2023 16:43:15 +0200 Message-Id: <20230627144339.144478-1-Julia.Lawall@inria.fr> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The functions vmalloc_array and vcalloc were introduced in commit a8749a35c399 ("mm: vmalloc: introduce array allocation functions") but are not used much yet. This series introduces uses of these functions, to protect against multiplication overflows. The changes were done using the following Coccinelle semantic patch. @initialize:ocaml@ @@ let rename alloc = match alloc with "vmalloc" -> "vmalloc_array" | "vzalloc" -> "vcalloc" | _ -> failwith "unknown" @@ size_t e1,e2; constant C1, C2; expression E1, E2, COUNT, x1, x2, x3; typedef u8; typedef __u8; type t = {u8,__u8,char,unsigned char}; identifier alloc = {vmalloc,vzalloc}; fresh identifier realloc = script:ocaml(alloc) { rename alloc }; @@ ( alloc(x1*x2*x3) | alloc(C1 * C2) | alloc((sizeof(t)) * (COUNT), ...) | - alloc((e1) * (e2)) + realloc(e1, e2) | - alloc((e1) * (COUNT)) + realloc(COUNT, e1) | - alloc((E1) * (E2)) + realloc(E1, E2) ) v2: This series uses vmalloc_array and vcalloc instead of array_size. It also leaves a multiplication of a constant by a sizeof as is. Two patches are thus dropped from the series. --- arch/x86/kernel/cpu/sgx/main.c | 2 +- drivers/accel/habanalabs/common/device.c | 3 ++- drivers/accel/habanalabs/common/state_dump.c | 7 ++++--- drivers/bus/mhi/host/init.c | 2 +- drivers/comedi/comedi_buf.c | 4 ++-- drivers/dma-buf/heaps/system_heap.c | 2 +- drivers/gpu/drm/gud/gud_pipe.c | 2 +- drivers/gpu/drm/i915/gvt/gtt.c | 6 ++++-- drivers/infiniband/hw/bnxt_re/qplib_res.c | 4 ++-- drivers/infiniband/hw/erdma/erdma_verbs.c | 4 ++-- drivers/infiniband/sw/siw/siw_qp.c | 4 ++-- drivers/infiniband/sw/siw/siw_verbs.c | 6 +++--- drivers/iommu/tegra-gart.c | 4 ++-- drivers/net/ethernet/amd/pds_core/core.c | 4 ++-- drivers/net/ethernet/freescale/enetc/enetc.c | 4 ++-- drivers/net/ethernet/google/gve/gve_tx.c | 2 +- drivers/net/ethernet/marvell/octeon_ep/octep_rx.c | 2 +- drivers/net/ethernet/microsoft/mana/hw_channel.c | 2 +- drivers/net/ethernet/pensando/ionic/ionic_lif.c | 4 ++-- drivers/scsi/fnic/fnic_trace.c | 2 +- drivers/scsi/qla2xxx/qla_init.c | 4 ++-- drivers/vdpa/vdpa_user/iova_domain.c | 4 ++-- drivers/virtio/virtio_mem.c | 6 +++--- fs/btrfs/zoned.c | 4 ++-- kernel/kcov.c | 2 +- lib/test_vmalloc.c | 9 +++++---- 26 files changed, 52 insertions(+), 47 deletions(-)