6.12-stable review patch. If anyone has any objections, please let me know.
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From: Lizhi Xu lizhi.xu@windriver.com
[ Upstream commit 8b26c8c376b29cf29710fbfd093df194cefe26ad ]
The ntfs3 can use the page cache directly, so its address_space_operations need direct_IO. Exit ntfs_direct_IO() if it is a compressed file.
Fixes: b432163ebd15 ("fs/ntfs3: Update inode->i_mapping->a_ops on compression state") Reported-by: syzbot+e36cc3297bd3afd25e19@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=e36cc3297bd3afd25e19 Signed-off-by: Lizhi Xu lizhi.xu@windriver.com Signed-off-by: Konstantin Komarov almaz.alexandrovich@paragon-software.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ntfs3/inode.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c index a1e11228dafd0..5c05cccd2d40b 100644 --- a/fs/ntfs3/inode.c +++ b/fs/ntfs3/inode.c @@ -805,6 +805,10 @@ static ssize_t ntfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) ret = 0; goto out; } + if (is_compressed(ni)) { + ret = 0; + goto out; + }
ret = blockdev_direct_IO(iocb, inode, iter, wr ? ntfs_get_block_direct_IO_W : @@ -2108,5 +2112,6 @@ const struct address_space_operations ntfs_aops_cmpr = { .read_folio = ntfs_read_folio, .readahead = ntfs_readahead, .dirty_folio = block_dirty_folio, + .direct_IO = ntfs_direct_IO, }; // clang-format on