From patchwork Tue Jan 7 23:44:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anchal Agarwal X-Patchwork-Id: 213086 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=-8.4 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_SANE_1 autolearn=unavailable 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 8FD54C282DD for ; Tue, 7 Jan 2020 23:45:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 646BD206DB for ; Tue, 7 Jan 2020 23:45:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="EI/EFyjf" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726836AbgAGXps (ORCPT ); Tue, 7 Jan 2020 18:45:48 -0500 Received: from smtp-fw-2101.amazon.com ([72.21.196.25]:60707 "EHLO smtp-fw-2101.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726470AbgAGXpr (ORCPT ); Tue, 7 Jan 2020 18:45:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1578440746; x=1609976746; h=date:from:to:cc:subject:message-id:mime-version; bh=NHm42TlJLKDMXwfLCWbPw7bKb/s9QHjU3lyklyyG0cI=; b=EI/EFyjfG0QSvSKGZQrLy3ruBsZhASNC7DTJtlviSuSDbYOtly12AUGQ 5L3IEuk90suW/RQUiQv6N9mwmLK4S7dWb2eM4wtz9BgeV1RR+X92Uapdt 0vm/LJesemandrsGUNnOTUX7/QroFH52cRO0Wk7RtFPy6OEK0670o9/uO I=; IronPort-SDR: gkNYw935e97eoztM5ARiz4jflA1dZJd8BbTSLZxwZdbg2Lz2qjmfDCPJWMmvzfDoR8KoPOg4GN Ps++MVqJl7vA== X-IronPort-AV: E=Sophos;i="5.69,407,1571702400"; d="scan'208";a="11408855" Received: from iad12-co-svc-p1-lb1-vlan2.amazon.com (HELO email-inbound-relay-1d-f273de60.us-east-1.amazon.com) ([10.43.8.2]) by smtp-border-fw-out-2101.iad2.amazon.com with ESMTP; 07 Jan 2020 23:45:46 +0000 Received: from EX13MTAUEB002.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan2.iad.amazon.com [10.40.159.162]) by email-inbound-relay-1d-f273de60.us-east-1.amazon.com (Postfix) with ESMTPS id D093FA2715; Tue, 7 Jan 2020 23:45:38 +0000 (UTC) Received: from EX13D08UEB001.ant.amazon.com (10.43.60.245) by EX13MTAUEB002.ant.amazon.com (10.43.60.12) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Tue, 7 Jan 2020 23:44:58 +0000 Received: from EX13MTAUEA001.ant.amazon.com (10.43.61.82) by EX13D08UEB001.ant.amazon.com (10.43.60.245) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Tue, 7 Jan 2020 23:44:57 +0000 Received: from dev-dsk-anchalag-2a-9c2d1d96.us-west-2.amazon.com (172.22.96.68) by mail-relay.amazon.com (10.43.61.243) with Microsoft SMTP Server id 15.0.1367.3 via Frontend Transport; Tue, 7 Jan 2020 23:44:57 +0000 Received: by dev-dsk-anchalag-2a-9c2d1d96.us-west-2.amazon.com (Postfix, from userid 4335130) id 9A92F40E65; Tue, 7 Jan 2020 23:44:57 +0000 (UTC) Date: Tue, 7 Jan 2020 23:44:57 +0000 From: Anchal Agarwal To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , CC: Subject: [RFC PATCH V2 10/11] PM / hibernate: update the resume offset on SNAPSHOT_SET_SWAP_AREA Message-ID: <20200107234457.GA18829@dev-dsk-anchalag-2a-9c2d1d96.us-west-2.amazon.com> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org From: Aleksei Besogonov The SNAPSHOT_SET_SWAP_AREA is supposed to be used to set the hibernation offset on a running kernel to enable hibernating to a swap file. However, it doesn't actually update the swsusp_resume_block variable. As a result, the hibernation fails at the last step (after all the data is written out) in the validation of the swap signature in mark_swapfiles(). Before this patch, the command line processing was the only place where swsusp_resume_block was set. Signed-off-by: Aleksei Besogonov Signed-off-by: Munehisa Kamata Signed-off-by: Anchal Agarwal --- kernel/power/user.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/kernel/power/user.c b/kernel/power/user.c index 77438954cc2b..d396e313cb7b 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -374,8 +374,12 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd, if (swdev) { offset = swap_area.offset; data->swap = swap_type_of(swdev, offset, NULL); - if (data->swap < 0) + if (data->swap < 0) { error = -ENODEV; + } else { + swsusp_resume_device = swdev; + swsusp_resume_block = offset; + } } else { data->swap = -1; error = -EINVAL;