Unverified Commit 66d938e8 authored by Lizhi Xu's avatar Lizhi Xu Committed by Christian Brauner
Browse files

netfs: Prevent duplicate unlocking 



The filio lock has been released here, so there is no need to jump to
error_folio_unlock to release it again.

Reported-by: default avatar <syzbot+b73c7d94a151e2ee1e9b@syzkaller.appspotmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=b73c7d94a151e2ee1e9b


Signed-off-by: default avatarLizhi Xu <lizhi.xu@windriver.com>
Acked-by: default avatarDavid Howells <dhowells@redhat.com>
Reviewed-by: default avatarPaulo Alcantara (Red Hat) <pc@manguebit.org>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent f83ec76b

fs/netfs/buffered_write.c

+1 −1
Original line number Diff line number Diff line
@@ -347,7 +347,7 @@ ssize_t netfs_perform_write(struct kiocb *iocb, struct iov_iter *iter, 
		folio_put(folio);

		ret = filemap_write_and_wait_range(mapping, fpos, fpos + flen - 1);

		if (ret < 0)

			goto error_folio_unlock;

			goto out;

		continue;



	copied: