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 4880D27F18F for ; Tue, 17 Feb 2026 17:30:20 +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=1771349420; cv=none; b=oSR/JrKehtWttVX16hKq+sogx++sYdordh5NGAvd0satfu0/+OWpgfXdGXezVhyXw5nA9FKfxGCC8wyCbq2kYLOfTZ1y1oTg7YsgkwwO+QrTKcqBKPy1qxlA3ou9jkHfIPRYmd6Yo7BxKOy0zQSqMNJgkWsrktNIc9Tp85jXxYo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771349420; c=relaxed/simple; bh=EJ1j076gJX/y97H7Yyni6ke0MddZoxTosTsQMFMz1Ac=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=e6yfw8GCwwsGUwxoOJ3hc4iyu3q7au0oLTFWB3zApi0+dCQkwSrZtaz2/Yrj+wNAnbRRAQRDnNS+2bg/5Lrq6I2weTypEPfPKum56RkBCz6NBrMczXVUg4Q1mLoqcq5ndGOmcE0tTytg7siYS3jh2GL+PpxkKNKlxQkBPuLEb3M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lSJR1Nvj; 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="lSJR1Nvj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 64E7AC4CEF7; Tue, 17 Feb 2026 17:30:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771349419; bh=EJ1j076gJX/y97H7Yyni6ke0MddZoxTosTsQMFMz1Ac=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lSJR1Nvjly77JdtNbWCRUrhig93KsgwxWfYAli/UN8K8dq4rAVEoauHZXxHR4UhOf p/LTvGod33AjvtiLWsfwznfkjDaJ6jpclFN23oPoIv+DS2/zI4vuzIavSa3d2t2Enh rQy1ms3xmYCSvLZ0V59xsQTszb+Nj7lcEYENoZZxF1aTTaHw6yAcnu+7fauwZOmwtD ISP9o6TfcHPb4KPYplSJZ4Hnc1Wg78cjR6ru/mmT8w9JXRgEMvD0dBKPTHt25Nyqtl qs88ACiXmR2+3COXxrBUPJz/hBj77sD6ez/hIB3tYz6/KiS1pybWhLDuI33CDUHY+6 iZtRbZkxNL0Tg== From: Sasha Levin To: stable@vger.kernel.org Cc: Chao Yu , Jaegeuk Kim , Sasha Levin Subject: [PATCH 6.19.y 1/2] f2fs: fix to do sanity check on node footer in __write_node_folio() Date: Tue, 17 Feb 2026 12:30:16 -0500 Message-ID: <20260217173017.3790988-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <2026021741-extradite-expert-29ab@gregkh> References: <2026021741-extradite-expert-29ab@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