SQUASHFS error: Unable to read data cache entry

[cameloid]

I've just upgraded my RT-AC3100 to the latest firmware 384.15, and noticed a bunch of the following strings in the dmesg output:

[dump prev ops] from 80000000, local len(2850)
_ Reboot message ... _______________________________________________________
SQUASHFS error: Unable to read data cache entU52ce8e]
SQUASHFS error: Unable to read page, block 52ce8e, size d054
SQUASHFS error: Unable to read data cache entry [52ce8e]
SQUASHFS error: Unable to read page, block 52ce8e, size d054
SQUASHFS error: Unable to read data cache entry [52ce8e]
SQUASHFS error: Unable to read page, block 52ce8e, size d054

The router is working as per normal. Is this an indication of possible NAND failure, or something else?

 

[RMerlin]

This is normal. The firmware image was written to a live filesystem, so during the shutdown on the reboot, it complained that the filesystem had changed.