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 B91E8274FD0 for ; Tue, 17 Feb 2026 17:42:41 +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=1771350161; cv=none; b=CtVYt567S57NbJ9ccf+Ie3JG1+WeTDiSj1gULVNuegLZEjjSkodLcCTtsyCuR5TM64bV3PvRwKPV3bwaWNcAmoEnm0T4bodRGhasdLquNAP735DCcJgg42yxA3ZwjLuInUmGnu6TKnmiJa9Ecs+LzdR7jUtBy7ygImi2GGIGkmE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771350161; c=relaxed/simple; bh=EJ1j076gJX/y97H7Yyni6ke0MddZoxTosTsQMFMz1Ac=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=KGhFkHMNhOWF0ovlm0GO5J92noz6M5aU1uGH5maa13uDgw90xcBiXiAyDQb+dkFk4rBeO0R0lOCPCfaR2NIUKWLjl49i3ony+/gikdtFQoScPasdUPTbl+2Br+81lbJDNL4+UetWN7YilNEjWR7uPQ1FSordIsc7ttiWSy8Y/3g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=q9RQDJb/; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="q9RQDJb/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E637DC4CEF7; Tue, 17 Feb 2026 17:42:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771350161; bh=EJ1j076gJX/y97H7Yyni6ke0MddZoxTosTsQMFMz1Ac=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=q9RQDJb/JWCjalRzWvACPGRaCMj3HRfiyeCMTBwD7XLXZ/JgjhI8n7KsQu6/211Eu hyCViM5B2Vb2vfg5vSCwdOrfwy/PK3PeQFk1JYTmXfh+aWgsUdPotUSeOYm0txmOZW wVjLOHnygii0g55+g3aMqby6xn9FBAeEAakjU4iRZUkg1fNvV7BASiS7+l9uEMdq5t bJOOU0Qu1qyR5syAxgEswvuD+luOGkTNooTnu0aypw+6HcmeZ5IShKmzLkI3PDlwQ4 ylziYLp82F3YiZFzbIh54G9nAhbQMqYUhZMWYNeFDM4tAQIkvfNt8I0VZM1H+UNb1y NiIiJv/YB/XAw== From: Sasha Levin To: stable@vger.kernel.org Cc: Chao Yu , Jaegeuk Kim , Sasha Levin Subject: [PATCH 6.18.y 1/2] f2fs: fix to do sanity check on node footer in __write_node_folio() Date: Tue, 17 Feb 2026 12:42:37 -0500 Message-ID: <20260217174238.3796376-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <2026021742-demeaning-paternal-8f4f@gregkh> References: <2026021742-demeaning-paternal-8f4f@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Chao Yu [ Upstream commit 0a736109c9d29de0c26567e42cb99b27861aa8ba ] Add node footer sanity check during node folio's writeback, if sanity check fails, let's shutdown filesystem to avoid looping to redirty and writeback in .writepages. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim Signed-off-by: Sasha Levin --- fs/f2fs/node.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 482a362f26254..a963c4165bc4b 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1751,7 +1751,11 @@ static bool __write_node_folio(struct folio *folio, bool atomic, bool *submitted /* get old block addr of this node page */ nid = nid_of_node(folio); - f2fs_bug_on(sbi, folio->index != nid); + + if (sanity_check_node_footer(sbi, folio, nid, NODE_TYPE_REGULAR)) { + f2fs_handle_critical_error(sbi, STOP_CP_REASON_CORRUPTED_NID); + goto redirty_out; + } if (f2fs_get_node_info(sbi, nid, &ni, !do_balance)) goto redirty_out; -- 2.51.0