selinux: opened file can't have NULL or negative ->f_path.dentry

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

security/selinux/hooks.c

@@ -3135,11 +3135,6 @@ static int selinux_file_fcntl(struct file *file, unsigned int cmd,
 
 	switch (cmd) {
 	case F_SETFL:
-		if (!file->f_path.dentry || !file->f_path.dentry->d_inode) {
-			err = -EINVAL;
-			break;
-		}
-
 		if ((file->f_flags & O_APPEND) && !(arg & O_APPEND)) {
 			err = file_has_perm(cred, file, FILE__WRITE);
 			break;
@@ -3162,10 +3157,6 @@ static int selinux_file_fcntl(struct file *file, unsigned int cmd,
 	case F_SETLK64:
 	case F_SETLKW64:
 #endif
-		if (!file->f_path.dentry || !file->f_path.dentry->d_inode) {
-			err = -EINVAL;
-			break;
-		}
 		err = file_has_perm(cred, file, FILE__LOCK);
 		break;
 	}