From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5DDD6C35640 for ; Fri, 21 Feb 2020 08:12:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 26ED320722 for ; Fri, 21 Feb 2020 08:12:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582272757; bh=jJmGbjrMcrnfyaWkDHs+k6NYLdiYkzr+UWsEzaleZVE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=swRIHqBc1fpsiklEjnlLEmKkoIOypZfup60WzhWFNyyssHls4MuxqEasDxOAvoVjB qCvER4HoQwuBufHLl1KW+Rm3c0JX8CYSzFuQE4rcQeLicWQZ/56sVPRJA+ZWL7G5zN 551/VhELYQTNALhj6D6ORng61CKHBeMTUMcpY3BE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732884AbgBUIMf (ORCPT ); Fri, 21 Feb 2020 03:12:35 -0500 Received: from mail.kernel.org ([198.145.29.99]:48394 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732873AbgBUIMe (ORCPT ); Fri, 21 Feb 2020 03:12:34 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3729820722; Fri, 21 Feb 2020 08:12:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582272753; bh=jJmGbjrMcrnfyaWkDHs+k6NYLdiYkzr+UWsEzaleZVE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tv8aveUTGnHVAm2L7TeTziRkTZTuHqqIfYW2Vc/GUmD+9uGVdbDlv2uoXHd6LTsTv 2enRUl2rIlvfVJ4DqV6p/ipyQfI/dLdEHkr13ukfYyxal3VtvmEaZ6Gu3hzvQD4yeN t+9JOf6oHUF2ooPXQH5mQBWI4RLYVab5kx3yycxk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, YueHaibing , Ben Skeggs , Sasha Levin Subject: [PATCH 5.4 225/344] drm/nouveau: Fix copy-paste error in nouveau_fence_wait_uevent_handler Date: Fri, 21 Feb 2020 08:40:24 +0100 Message-Id: <20200221072409.662145337@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200221072349.335551332@linuxfoundation.org> References: <20200221072349.335551332@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: YueHaibing [ Upstream commit 1eb013473bff5f95b6fe1ca4dd7deda47257b9c2 ] Like other cases, it should use rcu protected 'chan' rather than 'fence->channel' in nouveau_fence_wait_uevent_handler. Fixes: 0ec5f02f0e2c ("drm/nouveau: prevent stale fence->channel pointers, and protect with rcu") Signed-off-by: YueHaibing Signed-off-by: Ben Skeggs Signed-off-by: Sasha Levin --- drivers/gpu/drm/nouveau/nouveau_fence.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c index 9118df035b28d..70bb6bb97af87 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fence.c +++ b/drivers/gpu/drm/nouveau/nouveau_fence.c @@ -156,7 +156,7 @@ nouveau_fence_wait_uevent_handler(struct nvif_notify *notify) fence = list_entry(fctx->pending.next, typeof(*fence), head); chan = rcu_dereference_protected(fence->channel, lockdep_is_held(&fctx->lock)); - if (nouveau_fence_update(fence->channel, fctx)) + if (nouveau_fence_update(chan, fctx)) ret = NVIF_NOTIFY_DROP; } spin_unlock_irqrestore(&fctx->lock, flags); -- 2.20.1