From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 77554338911; Fri, 9 Jan 2026 12:14:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767960874; cv=none; b=EivOK/h4P5h+HkAlGAew6p6gFEdIWz0tVWnkHt760RMU9DUuhzNAUDNhxScVYq5rIdMtS4oNjzTShWc+SxXSb2+a4ngaQiDU9uKS+WgUQNWVJ3Cvd4JrgQpsbq31ImD9UgmZxYIyuALmz3SlOPCYTr0rRb1bBp1BCA/Z4w38bb0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767960874; c=relaxed/simple; bh=n4M0drP9I7T18KfB0KSKMcL8jZNl5yUAzT/qbw5T9mg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=a1kCsarsn4CJER3/N+Jm43qEh+YfMcfi7sOgc5Mc0nqJVRag2y1o814z2pK5o0y7TxHlF/FZpAIsQroXEinovFZbAKT2Uy1xIv1v8kvWBEzLQGhB4OZVBvsCLgH10z1ZVFQtLjbJOjIu0YF9vXlbnpwrQMfclZNywWs7I8fzObk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=2buZNcJK; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="2buZNcJK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BE3DAC4CEF1; Fri, 9 Jan 2026 12:14:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1767960874; bh=n4M0drP9I7T18KfB0KSKMcL8jZNl5yUAzT/qbw5T9mg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2buZNcJKeoteBKErXV6vqp+BiBqnCRLxEWI6iLzIfJahasac/OSKVn/D+Lr/yEgd9 la4K4/eNGY7FOAbTpuEUUUye0akZjdaLMvyT/wSWOD3AXEg/V6Y0RxD8ZBqeFtS4Xc IiyDo8uAsCzKK7nLmElmvwkkx299qxqgKKVy4SZA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Robin Murphy , Yong Wu , Johan Hovold , AngeloGioacchino Del Regno , Joerg Roedel Subject: [PATCH 6.6 555/737] iommu/mediatek: fix device leak on of_xlate() Date: Fri, 9 Jan 2026 12:41:34 +0100 Message-ID: <20260109112154.877301392@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260109112133.973195406@linuxfoundation.org> References: <20260109112133.973195406@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold commit b3f1ee18280363ef17f82b564fc379ceba9ec86f upstream. Make sure to drop the reference taken to the iommu platform device when looking up its driver data during of_xlate(). Fixes: 0df4fabe208d ("iommu/mediatek: Add mt8173 IOMMU driver") Cc: stable@vger.kernel.org # 4.6 Acked-by: Robin Murphy Reviewed-by: Yong Wu Signed-off-by: Johan Hovold Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Joerg Roedel Signed-off-by: Greg Kroah-Hartman --- drivers/iommu/mtk_iommu.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -959,6 +959,8 @@ static int mtk_iommu_of_xlate(struct dev return -EINVAL; dev_iommu_priv_set(dev, platform_get_drvdata(m4updev)); + + put_device(&m4updev->dev); } return iommu_fwspec_add_ids(dev, args->args, 1);