UBIFS problem(ubi0 error) when boot up

Hi Everyone,
I build the image from the source code on OpenWrt/LEDE Project git server. After I load image to my board, I find the ubi error when boot up. Blow is my console log. Could someone can help me with this problem? Thank you!

====================== console log ==========================
Before mount_root

[   18.117687] mount_root: loading kmods from internal overlay
[   18.283354] ubi0 error: ubi_open_volume: 
[   18.289166] ubi0 error: ubi_open_volume: 
[   18.436658] ubi0 error: ubi_open_volume: 
[   18.439628] ubi0 error: ubi_open_volume: 
[   18.447353] ubi0 error: ubi_open_volume: 
[   18.458547] ubi0 error: ubi_open_volume: 
[   18.463617] ubi0 error: ubi_open_volume:
[   18.473959] UBIFS (ubi0:2): background thread "ubifs_bgt0_2" started, PID 156
[   18.500139] UBIFS (ubi0:2): recovery needed
[   18.552458] UBIFS (ubi0:2): recovery completed
[   18.552513] UBIFS (ubi0:2): UBIFS: mounted UBI device 0, volume 2, name "rootfs_data"
[   18.555795] UBIFS (ubi0:2): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
[   18.563688] UBIFS (ubi0:2): FS size: 16252928 bytes (15 MiB, 128 LEBs), journal size 1015809 bytes (0 MiB, 6 LEBs)
[   18.573590] UBIFS (ubi0:2): reserved for root: 767665 bytes (749 KiB)
[   18.583827] UBIFS (ubi0:2): media format: w4/r0 (latest is w4/r0), UUID E7DB34AC-2FB8-4F65-9081-4060BEBD157B, small LPT model
[   18.591067] block: attempting to load /tmp/ubifs_cfg/upper/etc/config/fstab

Which device?
Does it boot successfully with an official OpenWrt firmware image (release or snapshot)?

Hi mpa,

This is our product which has ipq8074 cpu and 4M SPI flash and 128M Nand flash. I have searched similar problem on google. It seems be related with mount twice rootfs. But I don't know what happen cause it. I still try to resolve this.

Thank you for your reply.