Unlike the normal SIOCOUTQ, SIOCOUTQNSD was never handled in compat mode. Add it to the common socket compat handler along with similar ones. Fixes: 2f4e1b397097 ("tcp: ioctl type SIOCOUTQNSD returns amount of data not sent") Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- net/socket.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/socket.c b/net/socket.c index 6a9ab7a8b1d2..a60f48ab2130 100644 --- a/net/socket.c +++ b/net/socket.c @@ -3452,6 +3452,7 @@ static int compat_sock_ioctl_trans(struct file *file, struct socket *sock, case SIOCSARP: case SIOCGARP: case SIOCDARP: + case SIOCOUTQNSD: case SIOCATMARK: return sock_do_ioctl(net, sock, cmd, arg); } -- 2.20.0