From nobody Sun Sep 14 22:46:34 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 122A2C6FA82 for ; Tue, 13 Sep 2022 14:32:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233776AbiIMOcw (ORCPT ); Tue, 13 Sep 2022 10:32:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55978 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234053AbiIMOb7 (ORCPT ); Tue, 13 Sep 2022 10:31:59 -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 5A9346525A; Tue, 13 Sep 2022 07:19:06 -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 A48EEB80FB3; Tue, 13 Sep 2022 14:18:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E5610C433C1; Tue, 13 Sep 2022 14:18:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1663078718; bh=I0CTipt04eDDrxw8dXxjJalEC8kmJXvopncOc6H0PnQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DUaFBCISHKHeuZGBxFvfuU+JyUszIUWtMXlN1qvfn5soqrWYdJ5BwC6md75PP0X2T vUNHTnwUTAJ4RSUhxU0MC6ucvGCyphnwCwRde0AYBycOqoRyXa4BA1MpprCNtSq4QM deiJsSXWi/uskM8oIW9k1sWpV8VWNamIx3JaQZlw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Harry Wentland , Leo Li , Rodrigo Siqueira , Alex Deucher , =?UTF-8?q?Christian=20K=C3=B6nig?= , "Pan, Xinhui" , David Airlie , Daniel Vetter , Wayne Lin , hersen wu , Wenjing Liu , Patrik Jakobsson , Thelford Williams , Fangzhi Zuo , Yongzhi Liu , Mikita Lipski , Jiapeng Chong , Bhanuprakash Modem , Sean Paul , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 5.15 038/121] drm/amd/display: fix memory leak when using debugfs_lookup() Date: Tue, 13 Sep 2022 16:03:49 +0200 Message-Id: <20220913140358.996346459@linuxfoundation.org> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220913140357.323297659@linuxfoundation.org> References: <20220913140357.323297659@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Greg Kroah-Hartman commit cbfac7fa491651c57926c99edeb7495c6c1aeac2 upstream. When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. Fix this up by properly calling dput(). Cc: Harry Wentland Cc: Leo Li Cc: Rodrigo Siqueira Cc: Alex Deucher Cc: "Christian K=C3=B6nig" Cc: "Pan, Xinhui" Cc: David Airlie Cc: Daniel Vetter Cc: Wayne Lin Cc: hersen wu Cc: Wenjing Liu Cc: Patrik Jakobsson Cc: Thelford Williams Cc: Fangzhi Zuo Cc: Yongzhi Liu Cc: Mikita Lipski Cc: Jiapeng Chong Cc: Bhanuprakash Modem Cc: Sean Paul Cc: amd-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Cc: stable@vger.kernel.org Reviewed-by: Rodrigo Siqueira Signed-off-by: Greg Kroah-Hartman Signed-off-by: Rodrigo Siqueira Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c @@ -3007,7 +3007,7 @@ void crtc_debugfs_init(struct drm_crtc * &crc_win_y_end_fops); debugfs_create_file_unsafe("crc_win_update", 0644, dir, crtc, &crc_win_update_fops); - + dput(dir); } #endif /*