r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000ac0)='/sys/class/virtio-ports', 0x0, 0x0)
fcntl$F_SET_FILE_RW_HINT(r0, 0x40e, &(0x7f0000000e40)=0x5)
fcntl$F_GET_FILE_RW_HINT(r0, 0x40d, &(0x7f0000001100))