openat$cdrom(0xffffffffffffff9c, 0x0, 0x0, 0x0)
r0 = openat$cdrom(0xffffffffffffff9c, &(0x7f0000000000), 0x80880, 0x0)
ioctl$CDROM_GET_MCN(r0, 0x5311, &(0x7f0000000080))
openat$sr(0xffffffffffffff9c, &(0x7f00000000c0), 0x0, 0x0)