This is a note to let you know that I've just added the patch titled
f2fs: fix to check return value of f2fs_do_truncate_blocks()
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
f2fs-fix-to-check-return-value-of-f2fs_do_truncate_b.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 07dc016afb7459fb1ebd0b14a19c126a6bf2c8a6
Author: Chao Yu <chao@xxxxxxxxxx>
Date: Wed Apr 5 22:44:53 2023 +0800
f2fs: fix to check return value of f2fs_do_truncate_blocks()
[ Upstream commit b851ee6ba3cc212641e622ebcf92b950c7bafa07 ]
Otherwise, if truncation on cow_inode failed, remained data may
pollute current transaction of atomic write.
Cc: Daeho Jeong <daehojeong@xxxxxxxxxx>
Fixes: a46bebd502fe ("f2fs: synchronize atomic write aborts")
Signed-off-by: Chao Yu <chao@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 23fb9861dba40..de92279a80020 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2117,7 +2117,11 @@ static int f2fs_ioc_start_atomic_write(struct file *filp, bool truncate)
clear_inode_flag(fi->cow_inode, FI_INLINE_DATA);
} else {
/* Reuse the already created COW inode */
- f2fs_do_truncate_blocks(fi->cow_inode, 0, true);
+ ret = f2fs_do_truncate_blocks(fi->cow_inode, 0, true);
+ if (ret) {
+ f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
+ goto out;
+ }
}
f2fs_write_inode(inode, NULL);
