cifs: Fix xid leak in cifs_create()

[ Upstream commit fee0fb1f15054bb6a0ede452acb42da5bef4d587 ]

If the cifs already shutdown, we should free the xid before return,
otherwise, the xid will be leaked.

Fixes: 087f757b0129 ("cifs: add shutdown support")
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 6e8e7cc..83c929d 100644 (file)
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -538,8 +538,10 @@ int cifs_create(struct user_namespace *mnt_userns, struct inode *inode,
        cifs_dbg(FYI, "cifs_create parent inode = 0x%p name is: %pd and dentry = 0x%p\n",
                 inode, direntry, direntry);
 
-       if (unlikely(cifs_forced_shutdown(CIFS_SB(inode->i_sb))))
-               return -EIO;
+       if (unlikely(cifs_forced_shutdown(CIFS_SB(inode->i_sb)))) {
+               rc = -EIO;
+               goto out_free_xid;
+       }
 
        tlink = cifs_sb_tlink(CIFS_SB(inode->i_sb));
        rc = PTR_ERR(tlink);