Trapping Errant DMA Disk Ops

[David Baron <d_baron@012.net.il>]

log entry: kernel: hda: dma_timer_expiry: dma status == 0x61

They may be due to a failing disk, MB, or cable problems but they can stop the 
system in its tracks. If the disk be mounted or otherwize being accessed, big 
red switch time. Otherwize, that wonderful click-clack of WD disks is the 
warning. Smartmon does not issue anything in time, it seems.

How might one configure smartmon to trap this "sooner". What I would want is 
to kill anything accessing the disk and then stop itself from doing so as 
well since smartmon is the likely accessing process. Try to save system from 
paralasis!