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Subject[PATCH AUTOSEL 4.19 007/100] f2fs: fix to recover inode->i_flags of inode block during POR
Date
From: Chao Yu <yuchao0@huawei.com>

[ Upstream commit 0c093b590efb5c1ccdc835868dc2ae94bd2e14dc ]

Testcase to reproduce this bug:
1. mkfs.f2fs /dev/sdd
2. mount -t f2fs /dev/sdd /mnt/f2fs
3. touch /mnt/f2fs/file
4. sync
5. chattr +a /mnt/f2fs/file
6. xfs_io -a /mnt/f2fs/file -c "fsync"
7. godown /mnt/f2fs
8. umount /mnt/f2fs
9. mount -t f2fs /dev/sdd /mnt/f2fs
10. xfs_io /mnt/f2fs/file

There is no error when opening this file w/o O_APPEND, but actually,
we expect the correct result should be:

/mnt/f2fs/file: Operation not permitted

The root cause is, in recover_inode(), we recover inode->i_flags more
than F2FS_I(inode)->i_flags, so fix it.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/f2fs/recovery.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index 281ba46b5b359..2c3be4c3c626f 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -226,6 +226,7 @@ static void recover_inode(struct inode *inode, struct page *page)

F2FS_I(inode)->i_advise = raw->i_advise;
F2FS_I(inode)->i_flags = le32_to_cpu(raw->i_flags);
+ f2fs_set_inode_flags(inode);
F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] =
le16_to_cpu(raw->i_gc_failures);

--
2.20.1
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