From patchwork Mon Jan 24 18:41:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 536179 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99EF3C43217 for ; Mon, 24 Jan 2022 19:32:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1351808AbiAXTcX (ORCPT ); Mon, 24 Jan 2022 14:32:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51822 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344991AbiAXT3K (ORCPT ); Mon, 24 Jan 2022 14:29:10 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 312ADC061368; Mon, 24 Jan 2022 11:13:21 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id E3B71B8122F; Mon, 24 Jan 2022 19:13:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 20A15C340E5; Mon, 24 Jan 2022 19:13:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1643051598; bh=MouureKsaSP7tMgNm+xCoUVff72Se1F9IIFgBjduPQ8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=twigKzCqWOw5A9z4hJheS98Mj3Kr6jE2AHoh+thrGpNC8p9H2X6jT5YdZd69/r+mG nf/VpzypxUYWdPto1mRqs49N7N6QL/gGArVB44X2KQ7CH+p2jq3Pv9tOgTOQeQJdNG fuRj5bknIURqwX/0tQEn95s9VT/oRaeilQg7KfaE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chao Yu , Jaegeuk Kim Subject: [PATCH 4.19 026/239] f2fs: fix to do sanity check in is_alive() Date: Mon, 24 Jan 2022 19:41:04 +0100 Message-Id: <20220124183943.957395248@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220124183943.102762895@linuxfoundation.org> References: <20220124183943.102762895@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Chao Yu commit 77900c45ee5cd5da63bd4d818a41dbdf367e81cd upstream. In fuzzed image, SSA table may indicate that a data block belongs to invalid node, which node ID is out-of-range (0, 1, 2 or max_nid), in order to avoid migrating inconsistent data in such corrupted image, let's do sanity check anyway before data block migration. Cc: stable@vger.kernel.org Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim Signed-off-by: Greg Kroah-Hartman --- fs/f2fs/gc.c | 3 +++ 1 file changed, 3 insertions(+) --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -589,6 +589,9 @@ static bool is_alive(struct f2fs_sb_info set_sbi_flag(sbi, SBI_NEED_FSCK); } + if (f2fs_check_nid_range(sbi, dni->ino)) + return false; + *nofs = ofs_of_node(node_page); source_blkaddr = datablock_addr(NULL, node_page, ofs_in_node); f2fs_put_page(node_page, 1);