From mboxrd@z Thu Jan 1 00:00:00 1970 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 CCDA7C433EF for ; Mon, 6 Dec 2021 14:44:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344552AbhLFOsP (ORCPT ); Mon, 6 Dec 2021 09:48:15 -0500 Received: from dfw.source.kernel.org ([139.178.84.217]:47648 "EHLO dfw.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344411AbhLFOsO (ORCPT ); Mon, 6 Dec 2021 09:48:14 -0500 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 dfw.source.kernel.org (Postfix) with ESMTPS id A4996612D4; Mon, 6 Dec 2021 14:44:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 590CEC341C2; Mon, 6 Dec 2021 14:44:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1638801885; bh=cUjbe/EJAxsJ8SgLeq77UY5nWkrmwigTYc5XTbzXi8Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pQjdO0FVrurbWZwCXDtJKfjtObhATEZmVtxJCVai418GhufbzFVrL2heqVLnI5cWS cuqzt3zMUE3ZQoWwsO3go8P7a+X7KH2ZAbOiAyTQJ1hBuOdWSXdIuoemuhNnibsFeO kvZBNntunIbY3TSYXWOOivUjWhMgQcLnXJmg56Yi/PIT7VYbytWO9uhDlAiCD1xENP 70QC2C11JhCSl+Skz+DgKr1c5fM4rt2MfllQ79lWZCApHv2YFXIwzcWe32kWshepMj hGAJDleidIhl3gQCVW3QFotxItH5BOeofXYnFXt1XBVgCCEm8F9MfED53lbbuCqCTw 7EDZOniskqNew== From: Chao Yu To: jaegeuk@kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, Chao Yu , stable@vger.kernel.org Subject: [PATCH 3/3] f2fs: fix to do sanity check in is_alive() Date: Mon, 6 Dec 2021 22:44:21 +0800 Message-Id: <20211206144421.3735-3-chao@kernel.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211206144421.3735-1-chao@kernel.org> References: <20211206144421.3735-1-chao@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- fs/f2fs/gc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 3e64b234df21..b538cbcba351 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -1026,6 +1026,9 @@ static bool is_alive(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, 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 = data_blkaddr(NULL, node_page, ofs_in_node); f2fs_put_page(node_page, 1); -- 2.32.0