Memory Access Error

Unable to handle kernel paging request at virtual address fff09020
指的是沒辦法轉VA to PA
在map_desc的情況下通常是沒有相對應的entry

Unhandled fault: external abort on non-linefetch (0x01a) at 0xfffa3000
則是指硬體無法存取該register
可能是硬體沒被config好


[i2c] [PATCH] I2C: Fix unhandled fault in i2c-omap controller, take #2
http://lists.lm-sensors.org/pipermail/i2c/2008-March/003135.html

i2c-omap: Fix unhandled fault
http://kerneltrap.org/mailarchive/git-commits-head/2008/3/26/1257404


Tracking down hardware exceptions on hardware
http://www.newlc.com/tracking-down-hardware-exceptions-hardware