From nobody Fri Dec 19 20:12:28 2025 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 B14BBC3A59D for ; Sat, 22 Oct 2022 08:05:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232619AbiJVIFd (ORCPT ); Sat, 22 Oct 2022 04:05:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47924 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232447AbiJVH7A (ORCPT ); Sat, 22 Oct 2022 03:59:00 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AA52355AF; Sat, 22 Oct 2022 00:49:19 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 87CB5B82DF6; Sat, 22 Oct 2022 07:49:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DA82CC433D7; Sat, 22 Oct 2022 07:49:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1666424944; bh=t9a02up3UmCRf+tLpcInPigc4BFh75HEwd8CGe1RyE4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EMr/FNl+tB74Vh21bXjSBPWVIUMaUxmO9/qjBq3Qr4Bp6+irnrRf7e7AY89Q25f17 BZQ9kCxBX2UAt40FOKs00J3RX6Wu5UzXsFoQIGf8NHSWbvoCSjjSSHg7RVX57qgR96 aloK2LaGJ2alRmF0D8/nl+oxvWpvGLImz4PiIbik= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter , Chia-I Wu , Gerd Hoffmann , Sasha Levin Subject: [PATCH 5.19 335/717] virtio-gpu: fix shift wrapping bug in virtio_gpu_fence_event_create() Date: Sat, 22 Oct 2022 09:23:34 +0200 Message-Id: <20221022072510.011098256@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221022072415.034382448@linuxfoundation.org> References: <20221022072415.034382448@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Dan Carpenter [ Upstream commit 37a78445763a5921bb54e9bad01937d0dfa521c1 ] The ->ring_idx_mask variable is a u64 so static checkers, Smatch in this case, complain if the BIT() is not also a u64. drivers/gpu/drm/virtio/virtgpu_ioctl.c:50 virtio_gpu_fence_event_create() warn: should '(1 << ring_idx)' be a 64 bit type? Fixes: cd7f5ca33585 ("drm/virtio: implement context init: add virtio_gpu_fe= nce_event") Signed-off-by: Dan Carpenter Reviewed-by: Chia-I Wu Link: http://patchwork.freedesktop.org/patch/msgid/YygN7jY0GdUSQSy0@kili Signed-off-by: Gerd Hoffmann Signed-off-by: Sasha Levin --- drivers/gpu/drm/virtio/virtgpu_ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virti= o/virtgpu_ioctl.c index 3b1701607aae..5d05093014ac 100644 --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c @@ -47,7 +47,7 @@ static int virtio_gpu_fence_event_create(struct drm_devic= e *dev, struct virtio_gpu_fence_event *e =3D NULL; int ret; =20 - if (!(vfpriv->ring_idx_mask & (1 << ring_idx))) + if (!(vfpriv->ring_idx_mask & BIT_ULL(ring_idx))) return 0; =20 e =3D kzalloc(sizeof(*e), GFP_KERNEL); --=20 2.35.1