r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000140), 0x0, 0x0)
syz_open_procfs$namespace(0xffffffffffffffff, &(0x7f00000002c0)='ns/cgroup\x00')
ioctl$TCGETS(r0, 0x5401, &(0x7f0000000340))