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([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-btrfs@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(-)