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=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 BADC3C433E1 for ; Fri, 21 Aug 2020 17:25:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9A79C20738 for ; Fri, 21 Aug 2020 17:25:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598030706; bh=TFcesgzQ7Oq2G8volWlqg/GYHHqF06Bz+VQQ33eO6+k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=CzDkt0ivlkLHECw22iUFhQnqz9nuVF8ZvDctVoOxe0yaibG4lLPdDsz5hsX4dxf5u p4t2CRor/GLRWJDL96VNNBgdmBzl8ZqxaHNJz4TPjdc+WzCc4qsT68AplCHsi6CsU2 8OUkoaD5WI5qD4TShc+1AKmQDkF2xTmhSOavqZIw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728869AbgHURY7 (ORCPT ); Fri, 21 Aug 2020 13:24:59 -0400 Received: from mail.kernel.org ([198.145.29.99]:47910 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726718AbgHUQP2 (ORCPT ); Fri, 21 Aug 2020 12:15:28 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 29FCF20578; Fri, 21 Aug 2020 16:15:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598026527; bh=TFcesgzQ7Oq2G8volWlqg/GYHHqF06Bz+VQQ33eO6+k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Y+YKoUhCgYZg6noITHqJpWgtKkoCFRWKFnsq1iil9UnyniD4H8LKXC2gsr3eikhrF ssDxthBd2QHoAzWFEM2AxfH4JcXP2Xfx4CAXPHX3Bt22xbYwcKZ5I0YnbkuN7KpBYM lG7Zz3rJvZBJWYA76UtIzpQzdm1UG8W/H3y6VR9M= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Aditya Pakki , Ben Skeggs , Sasha Levin , dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.8 50/62] drm/nouveau: Fix reference count leak in nouveau_connector_detect Date: Fri, 21 Aug 2020 12:14:11 -0400 Message-Id: <20200821161423.347071-50-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200821161423.347071-1-sashal@kernel.org> References: <20200821161423.347071-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Aditya Pakki [ Upstream commit 990a1162986e8eff7ca18cc5a0e03b4304392ae2 ] nouveau_connector_detect() calls pm_runtime_get_sync and in turn increments the reference count. In case of failure, decrement the ref count before returning the error. Signed-off-by: Aditya Pakki Signed-off-by: Ben Skeggs Signed-off-by: Sasha Levin --- drivers/gpu/drm/nouveau/nouveau_connector.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c index 1b383ae0248f3..ef8ddbe445812 100644 --- a/drivers/gpu/drm/nouveau/nouveau_connector.c +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c @@ -572,8 +572,10 @@ nouveau_connector_detect(struct drm_connector *connector, bool force) pm_runtime_get_noresume(dev->dev); } else { ret = pm_runtime_get_sync(dev->dev); - if (ret < 0 && ret != -EACCES) + if (ret < 0 && ret != -EACCES) { + pm_runtime_put_autosuspend(dev->dev); return conn_status; + } } nv_encoder = nouveau_connector_ddc_detect(connector); -- 2.25.1