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Date: Sat, 11 Jun 2022 08:36:56 -0700
From: Stephen Hemminger <stephen@networkplumber.org>
To: David Marchand <david.marchand@redhat.com>
Cc: dev@dpdk.org, thomas@monjalon.net, ferruh.yigit@xilinx.com,
stable@dpdk.org, Maxime Coquelin <maxime.coquelin@redhat.com>, Chenbo Xia
<chenbo.xia@intel.com>, Fan Zhang <roy.fan.zhang@intel.com>
Subject: Re: [PATCH 10/12] vhost/crypto: fix build with GCC 12
Message-ID: <20220611083656.750c105c@hermes.local>
In-Reply-To: <20220518101657.1230416-11-david.marchand@redhat.com>
References: <20220518101657.1230416-1-david.marchand@redhat.com>
<20220518101657.1230416-11-david.marchand@redhat.com>
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On Wed, 18 May 2022 12:16:55 +0200
David Marchand <david.marchand@redhat.com> wrote:
> GCC 12 raises the following warning:
>=20
> In file included from ../lib/mempool/rte_mempool.h:46,
> from ../lib/mbuf/rte_mbuf.h:38,
> from ../lib/vhost/vhost_crypto.c:7:
> ../lib/vhost/vhost_crypto.c: In function =E2=80=98rte_vhost_crypto_fetch_=
requests=E2=80=99:
> ../lib/eal/x86/include/rte_memcpy.h:371:9: warning: array subscript 1 is
> outside array bounds of =E2=80=98struct virtio_crypto_op_data_req[1]=
=E2=80=99
> [-Warray-bounds]
> 371 | rte_mov32((uint8_t *)dst + 3 * 32, (const uint8_t *)src + 3 * 32);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ../lib/vhost/vhost_crypto.c:1178:42: note: while referencing =E2=80=98req=
=E2=80=99
> 1178 | struct virtio_crypto_op_data_req req;
> | ^~~
>=20
> Check that copied length is within req boundaries.
>=20
> Fixes: 3c79609fda7c ("vhost/crypto: handle virtually non-contiguous buffe=
rs")
> Cc: stable@dpdk.org
>=20
> Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>