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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7BC41C6FA8E for ; Mon, 27 Feb 2023 02:17:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231461AbjB0CR1 (ORCPT ); Sun, 26 Feb 2023 21:17:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41608 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231724AbjB0CPr (ORCPT ); Sun, 26 Feb 2023 21:15:47 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B84F11A663; Sun, 26 Feb 2023 18:13:13 -0800 (PST) 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 dfw.source.kernel.org (Postfix) with ESMTPS id 92A2B60DBB; Mon, 27 Feb 2023 02:11:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E3B8CC4339C; Mon, 27 Feb 2023 02:11:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1677463894; bh=PzlYbTiEMX6pefYeUQfl69WRLnb10aZ+WjgrHa2YE6E=; h=From:To:Cc:Subject:Date:From; b=gzzJi9DL2c7mrBKaHz5a8tbJfnGsKiTT2rpjJOz+/VcW0K0ZantNSz/uuN9hOWv9o mXP6u3k86gxmbsDUL8OXYXLlTs7L5hL1IJnj6HEVsiAM5sO2udpw3sxxo6J6UMq3wx NJMgPfFhOVHETweccEvFAZJg+C2C9u8EfQmpQcqn868bdvWrPArd8SteK9Hy1XimBR mZJ9ZSakgdk2Dzd7iKbpzh94okia7nOp5bxUvZ6JizVAjMIiuFlohYvSbGkEAMhGgM V4oyH5EQsJt98g2aWNJV/KLy+0a1uPULC+TLCsem7o+yPG0zkuVkmL9QqBX96ANLK4 FcRbscsBP081Q== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Liwei Song , Alex Deucher , Sasha Levin , christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 4.14 1/9] drm/radeon: free iio for atombios when driver shutdown Date: Sun, 26 Feb 2023 21:11:23 -0500 Message-Id: <20230227021131.1053662-1-sashal@kernel.org> X-Mailer: git-send-email 2.39.0 MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Liwei Song [ Upstream commit 4773fadedca918faec443daaca5e4ea1c0ced144 ] Fix below kmemleak when unload radeon driver: unreferenced object 0xffff9f8608ede200 (size 512): comm "systemd-udevd", pid 326, jiffies 4294682822 (age 716.338s) hex dump (first 32 bytes): 00 00 00 00 c4 aa ec aa 14 ab 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000062fadebe>] kmem_cache_alloc_trace+0x2f1/0x500 [<00000000b6883cea>] atom_parse+0x117/0x230 [radeon] [<00000000158c23fd>] radeon_atombios_init+0xab/0x170 [radeon] [<00000000683f672e>] si_init+0x57/0x750 [radeon] [<00000000566cc31f>] radeon_device_init+0x559/0x9c0 [radeon] [<0000000046efabb3>] radeon_driver_load_kms+0xc1/0x1a0 [radeon] [<00000000b5155064>] drm_dev_register+0xdd/0x1d0 [<0000000045fec835>] radeon_pci_probe+0xbd/0x100 [radeon] [<00000000e69ecca3>] pci_device_probe+0xe1/0x160 [<0000000019484b76>] really_probe.part.0+0xc1/0x2c0 [<000000003f2649da>] __driver_probe_device+0x96/0x130 [<00000000231c5bb1>] driver_probe_device+0x24/0xf0 [<0000000000a42377>] __driver_attach+0x77/0x190 [<00000000d7574da6>] bus_for_each_dev+0x7f/0xd0 [<00000000633166d2>] driver_attach+0x1e/0x30 [<00000000313b05b8>] bus_add_driver+0x12c/0x1e0 iio was allocated in atom_index_iio() called by atom_parse(), but it doesn't got released when the dirver is shutdown. Fix this kmemleak by free it in radeon_atombios_fini(). Signed-off-by: Liwei Song Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/radeon/radeon_device.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index 906547b229a9a..e0fe21e7378b6 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -1045,6 +1045,7 @@ void radeon_atombios_fini(struct radeon_device *rdev) { if (rdev->mode_info.atom_context) { kfree(rdev->mode_info.atom_context->scratch); + kfree(rdev->mode_info.atom_context->iio); } kfree(rdev->mode_info.atom_context); rdev->mode_info.atom_context = NULL; -- 2.39.0