kern/127316: growisofs && non aligned DMA transfer

[Matthias Apitz]

>Number:         127316
>Category:       kern
>Synopsis:       growisofs && non aligned DMA transfer
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Sep 12 08:20:00 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Matthias Apitz
>Release:        7.0-RELEASE
>Organization:
>Environment:
FreeBSD rebelion.Sisis.de 7.0-RELEASE FreeBSD 7.0-RELEASE #0: Sun Feb 24 19:59:52 UTC 2008     root at logan.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
I wanted to add a file to an already written DVD+RW (written a day
before on the same system) with
 
# growisofs  -M /dev/cd0 -r -T -J -joliet-long -v directory
 
This produced tons of error messages via syslog as
 
Jul 11 13:45:30 rebelion kernel: ata0: FAILURE - non aligned DMA transfer attempted
Jul 11 13:45:30 rebelion kernel: acd0: setting up DMA failed
 
and the only way to get the system back to a usable state was rebooting
it;

>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: