r0 = epoll_create(0x6)
r1 = syz_open_dev$tty1(0xc, 0x4, 0x3)
syz_open_dev$tty20(0xc, 0x4, 0x1)
syz_open_dev$tty20(0xc, 0x4, 0x1)
ioctl$TCSETAW(r1, 0x4b6a, 0x0)
r2 = socket$inet6_tcp(0xa, 0x1, 0x0)
r3 = fcntl$dupfd(0xffffffffffffffff, 0x0, r2)
accept4$packet(r3, 0x0, 0x0, 0x0)
r4 = syz_open_dev$tty20(0xc, 0x4, 0x1)
ioctl$TIOCVHANGUP(r1, 0x5437, 0x0)
ioctl$TCSETAW(r4, 0x4b6a, 0x0)
epoll_ctl$EPOLL_CTL_ADD(r3, 0x1, 0xffffffffffffffff, &(0x7f0000000040)={0x20000017})
epoll_ctl$EPOLL_CTL_MOD(r0, 0x3, 0xffffffffffffffff, &(0x7f0000000000))