From 9a97df404a402fe1174d2d1119f87ff2a0ca2fe9 Mon Sep 17 00:00:00 2001 From: Zhang Xiaoxu Date: Mon, 17 Oct 2022 22:45:22 +0800 Subject: [PATCH] cifs: Fix xid leak in cifs_copy_file_range() If the file is used by swap, before return -EOPNOTSUPP, should free the xid, otherwise, the xid will be leaked. Fixes: 4e8aea30f775 ("smb3: enable swap on SMB3 mounts") Reviewed-by: Paulo Alcantara (SUSE) Signed-off-by: Zhang Xiaoxu Signed-off-by: Steve French --- fs/cifs/cifsfs.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index c6ac192..d0b9fec 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -1302,8 +1302,11 @@ static ssize_t cifs_copy_file_range(struct file *src_file, loff_t off, ssize_t rc; struct cifsFileInfo *cfile = dst_file->private_data; - if (cfile->swapfile) - return -EOPNOTSUPP; + if (cfile->swapfile) { + rc = -EOPNOTSUPP; + free_xid(xid); + return rc; + } rc = cifs_file_copychunk_range(xid, src_file, off, dst_file, destoff, len, flags); -- 2.7.4