From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Kroah-Hartman Subject: [PATCH 4.9 14/28] drm/mediatek: fix possible object reference leak Date: Thu, 9 May 2019 20:42:06 +0200 Message-ID: <20190509181253.142746342@linuxfoundation.org> References: <20190509181247.647767531@linuxfoundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20190509181247.647767531@linuxfoundation.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: linux-kernel@vger.kernel.org Cc: Sasha Levin , David Airlie , Greg Kroah-Hartman , stable@vger.kernel.org, Matthias Brugger , linux-mediatek@lists.infradead.org, dri-devel@lists.freedesktop.org, Wen Yang , linux-arm-kernel@lists.infradead.org List-Id: linux-mediatek@lists.infradead.org WyBVcHN0cmVhbSBjb21taXQgMmFlMmMzMzE2ZmI3N2RjZjY0Mjc1ZDAxMTU5NmI2MDEwNGM0NTQy NiBdCgpUaGUgY2FsbCB0byBvZl9wYXJzZV9waGFuZGxlIHJldHVybnMgYSBub2RlIHBvaW50ZXIg d2l0aCByZWZjb3VudAppbmNyZW1lbnRlZCB0aHVzIGl0IG11c3QgYmUgZXhwbGljaXRseSBkZWNy ZW1lbnRlZCBhZnRlciB0aGUgbGFzdAp1c2FnZS4KCkRldGVjdGVkIGJ5IGNvY2NpbmVsbGUgd2l0 aCB0aGUgZm9sbG93aW5nIHdhcm5pbmdzOgpkcml2ZXJzL2dwdS9kcm0vbWVkaWF0ZWsvbXRrX2hk bWkuYzoxNTIxOjItODogRVJST1I6IG1pc3Npbmcgb2Zfbm9kZV9wdXQ7IGFjcXVpcmVkIGEgbm9k ZSBwb2ludGVyIHdpdGggcmVmY291bnQgaW5jcmVtZW50ZWQgb24gbGluZSAxNTA5LCBidXQgd2l0 aG91dCBhIGNvcnJlc3BvbmRpbmcgb2JqZWN0IHJlbGVhc2Ugd2l0aGluIHRoaXMgZnVuY3Rpb24u CmRyaXZlcnMvZ3B1L2RybS9tZWRpYXRlay9tdGtfaGRtaS5jOjE1MjQ6MS03OiBFUlJPUjogbWlz c2luZyBvZl9ub2RlX3B1dDsgYWNxdWlyZWQgYSBub2RlIHBvaW50ZXIgd2l0aCByZWZjb3VudCBp bmNyZW1lbnRlZCBvbiBsaW5lIDE1MDksIGJ1dCB3aXRob3V0IGEgY29ycmVzcG9uZGluZyBvYmpl Y3QgcmVsZWFzZSB3aXRoaW4gdGhpcyBmdW5jdGlvbi4KClNpZ25lZC1vZmYtYnk6IFdlbiBZYW5n IDx3ZW4ueWFuZzk5QHp0ZS5jb20uY24+CkNjOiBDSyBIdSA8Y2suaHVAbWVkaWF0ZWsuY29tPgpD YzogUGhpbGlwcCBaYWJlbCA8cC56YWJlbEBwZW5ndXRyb25peC5kZT4KQ2M6IERhdmlkIEFpcmxp ZSA8YWlybGllZEBsaW51eC5pZT4KQ2M6IERhbmllbCBWZXR0ZXIgPGRhbmllbEBmZndsbC5jaD4K Q2M6IE1hdHRoaWFzIEJydWdnZXIgPG1hdHRoaWFzLmJnZ0BnbWFpbC5jb20+CkNjOiBkcmktZGV2 ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCkNjOiBsaW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJh ZGVhZC5vcmcKQ2M6IGxpbnV4LW1lZGlhdGVrQGxpc3RzLmluZnJhZGVhZC5vcmcKQ2M6IGxpbnV4 LWtlcm5lbEB2Z2VyLmtlcm5lbC5vcmcKU2lnbmVkLW9mZi1ieTogQ0sgSHUgPGNrLmh1QG1lZGlh dGVrLmNvbT4KU2lnbmVkLW9mZi1ieTogU2FzaGEgTGV2aW4gPHNhc2hhbEBrZXJuZWwub3JnPgot LS0KIGRyaXZlcnMvZ3B1L2RybS9tZWRpYXRlay9tdGtfaGRtaS5jIHwgMSArCiAxIGZpbGUgY2hh bmdlZCwgMSBpbnNlcnRpb24oKykKCmRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vbWVkaWF0 ZWsvbXRrX2hkbWkuYyBiL2RyaXZlcnMvZ3B1L2RybS9tZWRpYXRlay9tdGtfaGRtaS5jCmluZGV4 IDIwMGY3NWUxZDYxOTguLmU3YTY2NTFjZWVhYjEgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvZ3B1L2Ry bS9tZWRpYXRlay9tdGtfaGRtaS5jCisrKyBiL2RyaXZlcnMvZ3B1L2RybS9tZWRpYXRlay9tdGtf aGRtaS5jCkBAIC0xNTI4LDYgKzE1MjgsNyBAQCBzdGF0aWMgaW50IG10a19oZG1pX2R0X3BhcnNl X3BkYXRhKHN0cnVjdCBtdGtfaGRtaSAqaGRtaSwKIAlvZl9ub2RlX3B1dChyZW1vdGUpOwogCiAJ aGRtaS0+ZGRjX2FkcHQgPSBvZl9maW5kX2kyY19hZGFwdGVyX2J5X25vZGUoaTJjX25wKTsKKwlv Zl9ub2RlX3B1dChpMmNfbnApOwogCWlmICghaGRtaS0+ZGRjX2FkcHQpIHsKIAkJZGV2X2Vycihk ZXYsICJGYWlsZWQgdG8gZ2V0IGRkYyBpMmMgYWRhcHRlciBieSBub2RlXG4iKTsKIAkJcmV0dXJu IC1FSU5WQUw7Ci0tIAoyLjIwLjEKCgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJl ZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGlu Zm8vZHJpLWRldmVs 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=-8.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,T_DKIMWL_WL_HIGH,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 CD5D1C04AB1 for ; Thu, 9 May 2019 18:44:17 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A42A92183F for ; Thu, 9 May 2019 18:44:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="f4dnFcvn"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="gsWjKSuh" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A42A92183F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=rEBSn7zJKdfJFufILBbnCkwPdnMvsqv6CwbgDzzDqkc=; b=f4dnFcvnGvX/3A +iaDWeoYuTCjX/29SjSSBJlNu+mHDXziTLXGizUvgR7KqJ0ElEBR9zbJplVw35fMFb6SePvHUGdvl ecagbZyQEKKmSyaK0AOU6a02v/55c+rZwf/jl3s5/q20sKEFV2bqwoXK1eZTTX8/bsjQd6MyCgXdG qSNaDrURl+D+EyWqZ1oxVaIAVaBZeciI/4LMTJxQbHrFAwz3+sCuHqssv15DfiVqk2fD+cCFJ7wjZ bgzfEj/sZLvg8H+wpqEwBAutQNvbzx6zND9gQ/Q+1HR92pcMBSLDgv2kT2CF71wnjb3vvKEYoKeTY yJl3PFCilFVK0ursRsCg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hOo1c-0002Yz-FR; Thu, 09 May 2019 18:44:12 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hOo1X-0002YA-RD; Thu, 09 May 2019 18:44:10 +0000 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 DD1D02182B; Thu, 9 May 2019 18:44:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557427447; bh=IMwpLaU7gYGHD0ENoQFEavG1anlK5ZDetiYNVj2a3Ig=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gsWjKSuhGv7ZLhEyKWShBdIyEUN5EmdWrL80+E59B9lD3GxmYTTedLy2P1cjOM95X UXBqmzXbcmlr0BSw15MGnIobmcOFrKVTzeGGaZxYfasbouxlnTEfE7dJ22d/MS2MAa BR6tT5N/0pC1V0JDBlzQMMnR1J4Ue8IS1XN3L728= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Subject: [PATCH 4.9 14/28] drm/mediatek: fix possible object reference leak Date: Thu, 9 May 2019 20:42:06 +0200 Message-Id: <20190509181253.142746342@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190509181247.647767531@linuxfoundation.org> References: <20190509181247.647767531@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190509_114407_902220_C14F5FB6 X-CRM114-Status: GOOD ( 11.01 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sasha Levin , Daniel Vetter , David Airlie , Greg Kroah-Hartman , stable@vger.kernel.org, Matthias Brugger , linux-mediatek@lists.infradead.org, dri-devel@lists.freedesktop.org, Philipp Zabel , CK Hu , Wen Yang , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org [ Upstream commit 2ae2c3316fb77dcf64275d011596b60104c45426 ] The call to of_parse_phandle returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: drivers/gpu/drm/mediatek/mtk_hdmi.c:1521:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1509, but without a corresponding object release within this function. drivers/gpu/drm/mediatek/mtk_hdmi.c:1524:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1509, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: CK Hu Cc: Philipp Zabel Cc: David Airlie Cc: Daniel Vetter Cc: Matthias Brugger Cc: dri-devel@lists.freedesktop.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mediatek@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: CK Hu Signed-off-by: Sasha Levin --- drivers/gpu/drm/mediatek/mtk_hdmi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index 200f75e1d6198..e7a6651ceeab1 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -1528,6 +1528,7 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, of_node_put(remote); hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np); + of_node_put(i2c_np); if (!hdmi->ddc_adpt) { dev_err(dev, "Failed to get ddc i2c adapter by node\n"); return -EINVAL; -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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=-8.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,T_DKIMWL_WL_HIGH,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 CBCCFC04AB2 for ; Thu, 9 May 2019 18:44:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A07C92183F for ; Thu, 9 May 2019 18:44:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557427450; bh=IMwpLaU7gYGHD0ENoQFEavG1anlK5ZDetiYNVj2a3Ig=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UG/SirBEbdFJkz+S/dNssK/hku7tRWAGq/HykV4ZDV0PLvebEdYZ9sbEaZ2ru9W2b O9ReepVUCZiUo98Ns76bcRXMw8gY2B22v4grnRiPnCzZDuh6UjgT0ZuCOQhAHNpkJw GPuELs7jqyCgEyiqSwVNgBsL0En6gd+SIL4GsHXk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726921AbfEISoK (ORCPT ); Thu, 9 May 2019 14:44:10 -0400 Received: from mail.kernel.org ([198.145.29.99]:35292 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726620AbfEISoH (ORCPT ); Thu, 9 May 2019 14:44:07 -0400 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 DD1D02182B; Thu, 9 May 2019 18:44:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557427447; bh=IMwpLaU7gYGHD0ENoQFEavG1anlK5ZDetiYNVj2a3Ig=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gsWjKSuhGv7ZLhEyKWShBdIyEUN5EmdWrL80+E59B9lD3GxmYTTedLy2P1cjOM95X UXBqmzXbcmlr0BSw15MGnIobmcOFrKVTzeGGaZxYfasbouxlnTEfE7dJ22d/MS2MAa BR6tT5N/0pC1V0JDBlzQMMnR1J4Ue8IS1XN3L728= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Wen Yang , CK Hu , Philipp Zabel , David Airlie , Daniel Vetter , Matthias Brugger , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Sasha Levin Subject: [PATCH 4.9 14/28] drm/mediatek: fix possible object reference leak Date: Thu, 9 May 2019 20:42:06 +0200 Message-Id: <20190509181253.142746342@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190509181247.647767531@linuxfoundation.org> References: <20190509181247.647767531@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 [ Upstream commit 2ae2c3316fb77dcf64275d011596b60104c45426 ] The call to of_parse_phandle returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: drivers/gpu/drm/mediatek/mtk_hdmi.c:1521:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1509, but without a corresponding object release within this function. drivers/gpu/drm/mediatek/mtk_hdmi.c:1524:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1509, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: CK Hu Cc: Philipp Zabel Cc: David Airlie Cc: Daniel Vetter Cc: Matthias Brugger Cc: dri-devel@lists.freedesktop.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mediatek@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: CK Hu Signed-off-by: Sasha Levin --- drivers/gpu/drm/mediatek/mtk_hdmi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index 200f75e1d6198..e7a6651ceeab1 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -1528,6 +1528,7 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, of_node_put(remote); hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np); + of_node_put(i2c_np); if (!hdmi->ddc_adpt) { dev_err(dev, "Failed to get ddc i2c adapter by node\n"); return -EINVAL; -- 2.20.1