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 8AD3233B6F1; Fri, 9 Jan 2026 12:14:28 +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=1767960868; cv=none; b=NAZRYtzFDMqfSQcZ7y24mV5GzfM1/Vrp7e+LStrEt+phjW6vFGpwEha9p3v/m5eWicBGWZQhq3Lt2oor2Bqeoug1mDyl87Xqo8XWIweBYrSgLegI7RcN79mFnZ2Zl5s6160tQrGOErGn4MgDYd/FginndWaPW73WgXmPwwuB470= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767960868; c=relaxed/simple; bh=yE0b7ftW4og9QxxNVKrqrg1KDr0PUPa6wzUy4ifpJic=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=M5aZp+ZJakWtsglBwPwP8ww2iIl/QLgz5p6herdnFVQ8oQFNKyq8Ot6iq3EmkWv3hUW9vuaz2iolMD4tPvQiwI31rDovn0ugs8Wq1BwGqbuocx1G2jL0l+AFyHR7b2J9AxD38qIk/lGPiPFPQxMiV6ymUmTabZ4p+U6yOpn1dRU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=KUUPRNMw; 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="KUUPRNMw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 111EAC4CEF1; Fri, 9 Jan 2026 12:14:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1767960868; bh=yE0b7ftW4og9QxxNVKrqrg1KDr0PUPa6wzUy4ifpJic=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KUUPRNMwFOTM6gTlUmTGId/mTu/1nxKBzcnEcdIq5CYoFhVT3hXMkSSOatod7N7R4 WgBydCf4vO5HwGcu7At2tfQ5IrTYZCM5I8v1hRp8YDIcjv2FNBHFAijNDit/7XIYj5 72sYhW9C3fnqN3XJmPmNciAKDwHkXEpugcDOikkw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Honghui Zhang , Robin Murphy , Yong Wu , Johan Hovold , AngeloGioacchino Del Regno , Joerg Roedel Subject: [PATCH 6.6 553/737] iommu/mediatek-v1: fix device leak on probe_device() Date: Fri, 9 Jan 2026 12:41:32 +0100 Message-ID: <20260109112154.800887157@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 c77ad28bfee0df9cbc719eb5adc9864462cfb65b upstream. Make sure to drop the reference taken to the iommu platform device when looking up its driver data during probe_device(). Fixes: b17336c55d89 ("iommu/mediatek: add support for mtk iommu generation one HW") Cc: stable@vger.kernel.org # 4.8 Cc: Honghui Zhang 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_v1.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/iommu/mtk_iommu_v1.c +++ b/drivers/iommu/mtk_iommu_v1.c @@ -420,6 +420,8 @@ static int mtk_iommu_v1_create_mapping(s return -EINVAL; dev_iommu_priv_set(dev, platform_get_drvdata(m4updev)); + + put_device(&m4updev->dev); } ret = iommu_fwspec_add_ids(dev, args->args, 1);