From nobody Sat Jul 25 06:11:30 2026 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 130533321DC; Fri, 17 Jul 2026 02:25:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.3 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784255139; cv=none; b=LrCu0K131ORSLj7QxM/W7f2/kdCy4hQD6HaBmVC6POf/9TzmgQvAaI5p/2rvybtKbMDvMAis/d/fYOo/cvRmNok9wxeUbPxo0yNphOg8TFsORtVlljWprS0l/tNIWnQi4yQUCGI6OjgxigJWKTPscnYOp7oWVyeShuUDJ9G6nbY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784255139; c=relaxed/simple; bh=7BH44toD02/hpqrQK29UP85kPSUxVy8sa5IiveoK47Y=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=RsZvc3tqoz64RBrBHsLk5SbfsyUuTCsWCKnmx3fEf09RnAQb2Gop6X4FqvfFW5Ka8bsCp9igAgXqe9rvZBYZep3dP/zZyZVKw/aWLmgBWS/EZjRD8TCSexaMVUXBl83cTSFMH0TOfk3Ic+sUxpabQxGXHwMF/sQ30rbLwBuzAd4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=NkVnBYdB; arc=none smtp.client-ip=117.135.210.3 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="NkVnBYdB" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=ow /DjgFL5xgyty9oVKvPCB18FikVfpXISPMnhNy94M8=; b=NkVnBYdBjadkrw5JPI j4VV4ADcBkhRYepl6P9Lxc5k340dSp6uE9UpAVt+9qSpMHrKd3eX9t6o47p5dgAA ewff/zBDmtmEfDWRVmgsfKzpwLnIngm2GSVIGRFD5QdWrGJvinb1g23dmUM1k199 QVTXv6DtJhifKMZ09t9KaShnU= Received: from xwm-TianYi510Pro-14IMB.. (unknown []) by gzga-smtp-mtada-g1-1 (Coremail) with SMTP id _____wDXNhd7kllqRw4hJw--.62841S2; Fri, 17 Jul 2026 10:25:00 +0800 (CST) From: Weimin Xiong To: netdev@vger.kernel.org Cc: linux-rdma@vger.kernel.org, rds-devel@oss.oracle.com, linux-kernel@vger.kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, achender@kernel.org Subject: [PATCH net-next v2] net/rds: use krealloc_array() for iovector growth Date: Fri, 17 Jul 2026 10:25:00 +0800 Message-ID: <20260717022501.329608-1-xiongwm2026@163.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: _____wDXNhd7kllqRw4hJw--.62841S2 X-Coremail-Antispam: 1Uf129KBjvdXoW7JF17AFW8WF13Cw4xGr1xXwb_yoWfWFc_GF WIqas7W343tF45Aw1xCr43tr9xtF4rua1fu343KrWSq3y8JFs8ZrWkJrn5AFZxWw4xur1Y yr1DZrn2y39xGjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7IUn1v3UUUUUU== X-CM-SenderInfo: x0lr0wdzpsijqw6rljoofrz/xtbCzRy0RGpZknx7owAA3k Content-Type: text/plain; charset="utf-8" Use krealloc_array() for growing the RDS iovector array. This makes the array allocation overflow-safe and derives the element size from the array pointer. Reviewed-by: Allison Henderson Signed-off-by: Weimin Xiong --- net/rds/send.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/rds/send.c b/net/rds/send.c index 68be1bf0e..a567c97a 100644 --- a/net/rds/send.c +++ b/net/rds/send.c @@ -971,11 +971,8 @@ static int rds_rm_size(struct msghdr *msg, int num_sgs, return -EINVAL; if (vct->indx >=3D vct->len) { vct->len +=3D vct->incr; - tmp_iov =3D - krealloc(vct->vec, - vct->len * - sizeof(struct rds_iov_vector), - GFP_KERNEL); + tmp_iov =3D krealloc_array(vct->vec, vct->len, + sizeof(*vct->vec), GFP_KERNEL); if (!tmp_iov) { vct->len -=3D vct->incr; return -ENOMEM; -- 2.39.3