linux-kernel - [PATCH 5.4 76/92] f2fs: set SBI_NEED_FSCK flag when inconsistent node block found

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Message-Id: <20211129181709.942185946@linuxfoundation.org>
Date:   Mon, 29 Nov 2021 19:18:45 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Weichao Guo <guoweichao@...o.com>,
        Chao Yu <chao@...nel.org>, Jaegeuk Kim <jaegeuk@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 76/92] f2fs: set SBI_NEED_FSCK flag when inconsistent node block found

From: Weichao Guo <guoweichao@...o.com>

[ Upstream commit 6663b138ded1a59e630c9e605e42aa7fde490cdc ]

Inconsistent node block will cause a file fail to open or read,
which could make the user process crashes or stucks. Let's mark
SBI_NEED_FSCK flag to trigger a fix at next fsck time. After
unlinking the corrupted file, the user process could regenerate
a new one and work correctly.

Signed-off-by: Weichao Guo <guoweichao@...o.com>
Reviewed-by: Chao Yu <chao@...nel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 fs/f2fs/node.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 4cb182c20eedd..0cd1d51dde06d 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1385,6 +1385,7 @@ static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid,
 			  nid, nid_of_node(page), ino_of_node(page),
 			  ofs_of_node(page), cpver_of_node(page),
 			  next_blkaddr_of_node(page));
+		set_sbi_flag(sbi, SBI_NEED_FSCK);
 		err = -EINVAL;
 out_err:
 		ClearPageUptodate(page);
-- 
2.33.0