tree 03642659045e0ce097d1ba5cb16d9e9e3241019a
parent b901e8e4a572c3df31497da12c9e3854fc53aac5
author Rustam Kovhaev <rkovhaev@gmail.com> 1595918537 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1598000516 +0200

usb: hso: check for return value in hso_serial_common_create()

[ Upstream commit e911e99a0770f760377c263bc7bac1b1593c6147 ]

in case of an error tty_register_device_attr() returns ERR_PTR(),
add IS_ERR() check

Reported-and-tested-by: syzbot+67b2bd0e34f952d0321e@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?extid=67b2bd0e34f952d0321e
Signed-off-by: Rustam Kovhaev <rkovhaev@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>