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=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_RED, 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 BD802C4332D for ; Mon, 28 Dec 2020 13:56:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7C10D20795 for ; Mon, 28 Dec 2020 13:56:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406658AbgL1N4r (ORCPT ); Mon, 28 Dec 2020 08:56:47 -0500 Received: from mail.kernel.org ([198.145.29.99]:58378 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2406605AbgL1N4n (ORCPT ); Mon, 28 Dec 2020 08:56:43 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 88C442072C; Mon, 28 Dec 2020 13:56:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1609163763; bh=rtXe47oXIk8fyQqWal2ZIsT7HCmvbt9xl6J7butPMqk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uB4SgUog8fzMzOQXdqukUL+cyTu6NkiUlXiiP2p58xBBBY8dHiVN2gT+5e5mBUpDw hca73s4DzV1IaoYmEcqtFT97fz4cYy1baeRGSZK+DdQCTmX5mxrIXHUb5IzOvU9H22 lQtG/8DfKN7fZY0tac56c+2dX4whMngEhnHqukoM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Harry Wentland , Alex Deucher , Nicholas Kazlauskas , Stylon Wang Subject: [PATCH 5.4 398/453] drm/amd/display: Fix memory leaks in S3 resume Date: Mon, 28 Dec 2020 13:50:34 +0100 Message-Id: <20201228124956.358473388@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201228124937.240114599@linuxfoundation.org> References: <20201228124937.240114599@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Stylon Wang commit a135a1b4c4db1f3b8cbed9676a40ede39feb3362 upstream. EDID parsing in S3 resume pushes new display modes to probed_modes list but doesn't consolidate to actual mode list. This creates a race condition when amdgpu_dm_connector_ddc_get_modes() re-initializes the list head without walking the list and results in memory leak. Bug: https://bugzilla.kernel.org/show_bug.cgi?id=209987 Acked-by: Harry Wentland Acked-by: Alex Deucher Reviewed-by: Nicholas Kazlauskas Signed-off-by: Stylon Wang Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1434,7 +1434,8 @@ amdgpu_dm_update_connector_after_detect( drm_connector_update_edid_property(connector, aconnector->edid); - drm_add_edid_modes(connector, aconnector->edid); + aconnector->num_modes = drm_add_edid_modes(connector, aconnector->edid); + drm_connector_list_update(connector); if (aconnector->dc_link->aux_mode) drm_dp_cec_set_edid(&aconnector->dm_dp_aux.aux,