From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELss6SYbcFgxxf9vAHBiuz4akOjI6AJZxf0KzN+JIE/b0ZtoRHwSEtBs7c/xSKOCNWmbF8Ck ARC-Seal: i=1; a=rsa-sha256; t=1521483871; cv=none; d=google.com; s=arc-20160816; b=SbvNriakNgofWORe8YItz80NTGrQJdiU91jLEkQTY9cU6zT3iGnqqMOZ5vX8/3WVwS 5XqaVVzegmk4J8UJAxQlgWVzLNVlaoiNrs1crioIRk5aITcQYi2zCKendjEEYaEGM7B9 OnJOo1YJDPymRkSu4gZ8YR7HmQ8g1b9u75E4tMJlUdeVvDXzP5PRBbgFx/XQT5dRz97p +SVS6ez4SHlNnx1wWEI51VtZwwZ5fmPykPnECVE/ksBSzeBU3SfQNUhluhWxb0EtodgO V52Ycg3dITrXYXY23Va3/Gc4TK69k7TjytgqW/cON6W0RNhDaf+OVsDwpzXUt3nPw6Jc MIqA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=vw7HZgYdJjpQBsz2kbijFgH0lbw8Ud7c+eYxnaBXclQ=; b=vPL7lHReDTdgxKQ+sZcQjJRo/v9VoZIG2LHylfhU6UiNqj1ypcYQ3j13bXs/OUBv0A Eu7J3uLiKAmJ1wF884evBLqobY1gIYcsvl487oQNuH1qbzMHk+wmgaX4zngJ74PKKDXy qToWAbq2GHABnRMONT6jCkwDGTgsQW+evQrUv8geoH7DYbooOQ4yDPOqdP4yFD4dLUgD 80gdn9GE3L6r3OPFIZJNU/xgluKCQ3XlzHhdJhZj+9OE+e1IINZHFAPEx3fI9f+FY65B iZfk5zOszciapR0OK2jSMAzCzsgVRi1zCqkAiszeVes+z1Fz41F5GxyHxyFN21Xb5gxg ukdw== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alexey Kardashevskiy , David Gibson , Alex Williamson , Sasha Levin Subject: [PATCH 4.9 148/241] vfio/spapr_tce: Check kzalloc() return when preregistering memory Date: Mon, 19 Mar 2018 19:06:53 +0100 Message-Id: <20180319180757.313717482@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180319180751.172155436@linuxfoundation.org> References: <20180319180751.172155436@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1595391471715160434?= X-GMAIL-MSGID: =?utf-8?q?1595391471715160434?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alexey Kardashevskiy [ Upstream commit 3393af24b665cb0aea7353b05e522b03ab1e7d73 ] This adds missing checking for kzalloc() return value. Fixes: 4b6fad7097f8 ("powerpc/mm/iommu, vfio/spapr: Put pages on VFIO container shutdown") Signed-off-by: Alexey Kardashevskiy Reviewed-by: David Gibson Signed-off-by: Alex Williamson Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/vfio/vfio_iommu_spapr_tce.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/vfio/vfio_iommu_spapr_tce.c +++ b/drivers/vfio/vfio_iommu_spapr_tce.c @@ -195,6 +195,11 @@ static long tce_iommu_register_pages(str return ret; tcemem = kzalloc(sizeof(*tcemem), GFP_KERNEL); + if (!tcemem) { + mm_iommu_put(container->mm, mem); + return -ENOMEM; + } + tcemem->mem = mem; list_add(&tcemem->next, &container->prereg_list);