Thanks for the support you are providing.I have enabled virtio modules with (m) option now and below are the updated logs of libguestfs..

upermin: mounting /proc
supermin: uptime: 1.10 1567.28
supermin: ext2 mini initrd starting up: 5.1.8 zlib
supermin: cmdline: panic=1 console=ttyS0 udevtimeout=6000 no_timer_check acpi=off printk.time=1 cgroup_disable=memory root=/dev/sdb selinux=0 guestfs_verbose=1 TERM=xterm
supermin: mounting /sys
supermin: internal insmod crc32c.ko
[    1.136268] crc32c: disagrees about version of symbol crypto_unregister_shash
[    1.138006] crc32c: Unknown symbol crypto_unregister_shash (err -22)
[    1.139571] crc32c: disagrees about version of symbol crypto_register_shash
[    1.141446] crc32c: Unknown symbol crypto_register_shash (err -22)
insmod: init_module: crc32c.ko: Invalid parameters
supermin: internal insmod virtio.ko
[    1.145450] virtio: disagrees about version of symbol device_register
[    1.147131] virtio: Unknown symbol device_register (err -22)
[    1.148588] virtio: disagrees about version of symbol dev_set_name
[    1.150091] virtio: Unknown symbol dev_set_name (err -22)
[    1.151494] virtio: disagrees about version of symbol device_unregister
[    1.153274] virtio: Unknown symbol device_unregister (err -22)
insmod: init_module: virtio.ko: Invalid parameters
supermin: internal insmod virtio_ring.ko
[    1.157919] virtio_ring: disagrees about version of symbol dev_warn
[    1.159622] virtio_ring: Unknown symbol dev_warn (err -22)
[    1.161131] virtio_ring: disagrees about version of symbol dev_err
[    1.162845] virtio_ring: Unknown symbol dev_err (err -22)
insmod: init_module: virtio_ring.ko: Invalid parameters
supermin: internal insmod virtio_blk.ko
[    1.167444] virtio_blk: disagrees about version of symbol device_create_file
[    1.169352] virtio_blk: Unknown symbol device_create_file (err -22)
[    1.171105] virtio_blk: disagrees about version of symbol dev_notice
[    1.172818] virtio_blk: Unknown symbol dev_notice (err -22)
insmod: init_module: virtio_blk.ko: Invalid parameters
supermin: internal insmod virtio_console.ko
[    1.177496] virtio_console: Unknown symbol hvc_instantiate (err 0)
[    1.179128] virtio_console: Unknown symbol hvc_alloc (err 0)
[    1.180676] virtio_console: Unknown symbol __hvc_resize (err 0)
[    1.182345] virtio_console: disagrees about version of symbol kobject_uevent
[    1.184209] virtio_console: Unknown symbol kobject_uevent (err -22)
[    1.185952] virtio_console: disagrees about version of symbol device_destroy
[    1.187786] virtio_console: Unknown symbol device_destroy (err -22)
[    1.189594] virtio_console: Unknown symbol hvc_remove (err 0)
[    1.191122] virtio_console: Unknown symbol hvc_kick (err 0)
[    1.192647] virtio_console: disagrees about version of symbol dev_warn
[    1.194444] virtio_console: Unknown symbol dev_warn (err -22)
[    1.196488] virtio_console: disagrees about version of symbol dev_err
[    1.198096] virtio_console: Unknown symbol dev_err (err -22)
[    1.199528] virtio_console: disagrees about version of symbol device_create
[    1.201388] virtio_console: Unknown symbol device_create (err -22)
[    1.202902] virtio_console: Unknown symbol hvc_poll (err 0)
insmod: init_module: virtio_console.ko: Unknown symbol in module
supermin: internal insmod virtio_net.ko
[    1.207732] virtio_net: disagrees about version of symbol eth_type_trans
[    1.209575] virtio_net: Unknown symbol eth_type_trans (err -22)
[    1.211019] virtio_net: disagrees about version of symbol netif_carrier_on
[    1.212874] virtio_net: Unknown symbol netif_carrier_on (err -22)
[    1.214353] virtio_net: disagrees about version of symbol netif_set_real_num_tx_queues
[    1.216418] virtio_net: Unknown symbol netif_set_real_num_tx_queues (err -22)
[    1.218159] virtio_net: disagrees about version of symbol eth_validate_addr
[    1.220016] virtio_net: Unknown symbol eth_validate_addr (err -22)
[    1.221514] virtio_net: disagrees about version of symbol register_netdev
[    1.223387] virtio_net: Unknown symbol register_netdev (err -22)
[    1.225142] virtio_net: disagrees about version of symbol skb_to_sgvec
[    1.226813] virtio_net: Unknown symbol skb_to_sgvec (err -22)
[    1.228288] virtio_net: disagrees about version of symbol eth_mac_addr
[    1.229869] virtio_net: Unknown symbol eth_mac_addr (err -22)
[    1.231424] virtio_net: disagrees about version of symbol __netdev_alloc_skb
[    1.233164] virtio_net: Unknown symbol __netdev_alloc_skb (err -22)
[    1.234708] virtio_net: disagrees about version of symbol unregister_netdev
[    1.236558] virtio_net: Unknown symbol unregister_netdev (err -22)
[    1.238062] virtio_net: disagrees about version of symbol free_netdev
[    1.239754] virtio_net: Unknown symbol free_netdev (err -22)
[    1.241185] virtio_net: disagrees about version of symbol dev_kfree_skb_any
[    1.242849] virtio_net: Unknown symbol dev_kfree_skb_any (err -22)
[    1.244566] virtio_net: disagrees about version of symbol __napi_schedule
[    1.246196] virtio_net: Unknown symbol __napi_schedule (err -22)
[    1.247668] virtio_net: disagrees about version of symbol skb_put
[    1.249315] virtio_net: Unknown symbol skb_put (err -22)
[    1.250629] virtio_net: disagrees about version of symbol netif_napi_add
[    1.252301] virtio_net: Unknown symbol netif_napi_add (err -22)
[    1.253868] virtio_net: disagrees about version of symbol ethtool_op_get_link
[    1.255579] virtio_net: Unknown symbol ethtool_op_get_link (err -22)
[    1.257192] virtio_net: disagrees about version of symbol dev_warn
[    1.258819] virtio_net: Unknown symbol dev_warn (err -22)
[    1.260210] virtio_net: disagrees about version of symbol netif_set_real_num_rx_queues
[    1.262200] virtio_net: Unknown symbol netif_set_real_num_rx_queues (err -22)
[    1.263962] virtio_net: disagrees about version of symbol skb_trim
[    1.265564] virtio_net: Unknown symbol skb_trim (err -22)
[    1.266920] virtio_net: disagrees about version of symbol netif_carrier_off
[    1.268638] virtio_net: Unknown symbol netif_carrier_off (err -22)
[    1.270149] virtio_net: disagrees about version of symbol __netif_schedule
[    1.272013] virtio_net: Unknown symbol __netif_schedule (err -22)
[    1.273501] virtio_net: disagrees about version of symbol alloc_etherdev_mqs
[    1.275321] virtio_net: Unknown symbol alloc_etherdev_mqs (err -22)
[    1.276891] virtio_net: disagrees about version of symbol kfree_skb
[    1.278407] virtio_net: Unknown symbol kfree_skb (err -22)
[    1.279942] virtio_net: disagrees about version of symbol skb_partial_csum_set
[    1.281661] virtio_net: Unknown symbol skb_partial_csum_set (err -22)
[    1.283358] virtio_net: disagrees about version of symbol napi_complete
[    1.285016] virtio_net: Unknown symbol napi_complete (err -22)
[    1.286457] virtio_net: disagrees about version of symbol netdev_notify_peers
[    1.288347] virtio_net: Unknown symbol netdev_notify_peers (err -22)
[    1.289889] virtio_net: disagrees about version of symbol consume_skb
[    1.291580] virtio_net: Unknown symbol consume_skb (err -22)
[    1.293018] virtio_net: disagrees about version of symbol netif_receive_skb
[    1.294684] virtio_net: Unknown symbol netif_receive_skb (err -22)
insmod: init_module: virtio_net.ko: Invalid parameters
supermin: internal insmod virtio_scsi.ko
[    1.299384] virtio_scsi: disagrees about version of symbol dev_printk
[    1.301099] virtio_scsi: Unknown symbol dev_printk (err -22)
insmod: init_module: virtio_scsi.ko: Invalid parameters
supermin: internal insmod virtio_pci.ko
[    1.305167] virtio_pci: module is already loaded
insmod: init_module: virtio_pci.ko: Invalid parameters
supermin: internal insmod crc-itu-t.ko
supermin: internal insmod libcrc32c.ko
[    1.310248] libcrc32c: disagrees about version of symbol crypto_shash_update
[    1.312136] libcrc32c: Unknown symbol crypto_shash_update (err -22)
[    1.313686] libcrc32c: disagrees about version of symbol crypto_destroy_tfm
[    1.315484] libcrc32c: Unknown symbol crypto_destroy_tfm (err -22)
[    1.317041] libcrc32c: disagrees about version of symbol crypto_alloc_shash
[    1.318822] libcrc32c: Unknown symbol crypto_alloc_shash (err -22)
insmod: init_module: libcrc32c.ko: Invalid parameters
func: main line 171
func: main line 171
func: main line 171
func: main line 171
func: main line 171
func: main line 171
func: main line 171
func: main line 171
func: main line 171
func: main line 171
func: main line 171
func: main line 171
func: main line 171
supermin: waiting another 1024000000 ns for /sys/block/sdb/dev to appear
^C