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From 69d71311d3d70282dec3d1f19f9e4b90c7b7c6b9 Mon Sep 17 00:00:00 2001
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From: eperezma <eperezma@redhat.com>
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Date: Tue, 12 Jan 2021 14:36:33 -0500
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Subject: [PATCH 09/17] hw/arm/smmuv3: Fix potential integer overflow (CID
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1432363)
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: eperezma <eperezma@redhat.com>
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Message-id: <20210112143638.374060-9-eperezma@redhat.com>
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Patchwork-id: 100601
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O-Subject: [RHEL-8.4.0 qemu-kvm PATCH v2 08/13] hw/arm/smmuv3: Fix potential integer overflow (CID 1432363)
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Bugzilla: 1843852
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RH-Acked-by: Xiao Wang <jasowang@redhat.com>
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RH-Acked-by: Peter Xu <peterx@redhat.com>
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RH-Acked-by: Auger Eric <eric.auger@redhat.com>
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From: Philippe Mathieu-Daudé <philmd@redhat.com>
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Use the BIT_ULL() macro to ensure we use 64-bit arithmetic.
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This fixes the following Coverity issue (OVERFLOW_BEFORE_WIDEN):
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CID 1432363 (#1 of 1): Unintentional integer overflow:
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overflow_before_widen:
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Potentially overflowing expression 1 << scale with type int
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(32 bits, signed) is evaluated using 32-bit arithmetic, and
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then used in a context that expects an expression of type
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hwaddr (64 bits, unsigned).
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Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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Acked-by: Eric Auger <eric.auger@redhat.com>
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Message-id: 20201030144617.1535064-1-philmd@redhat.com
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Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
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Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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(cherry picked from commit 744a790ec01a30033309e6a2155df4d61061e184)
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Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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hw/arm/smmuv3.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c
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index f4d5d9d8222..a418fab2aa6 100644
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--- a/hw/arm/smmuv3.c
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+++ b/hw/arm/smmuv3.c
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@@ -17,6 +17,7 @@
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*/
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#include "qemu/osdep.h"
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+#include "qemu/bitops.h"
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#include "hw/irq.h"
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#include "hw/sysbus.h"
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#include "migration/vmstate.h"
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@@ -847,7 +848,7 @@ static void smmuv3_s1_range_inval(SMMUState *s, Cmd *cmd)
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scale = CMD_SCALE(cmd);
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num = CMD_NUM(cmd);
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ttl = CMD_TTL(cmd);
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- num_pages = (num + 1) * (1 << (scale));
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+ num_pages = (num + 1) * BIT_ULL(scale);
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}
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if (type == SMMU_CMD_TLBI_NH_VA) {
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--
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2.27.0
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