misc/135014: Using padlock(4) in 8-current triggers "fpudna in kernel mode!" warnings

Mark Gladman mark at legios.org
Thu May 28 01:40:03 UTC 2009


>Number:         135014
>Category:       misc
>Synopsis:       Using padlock(4) in 8-current triggers "fpudna in kernel mode!" warnings
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu May 28 01:40:02 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Mark Gladman
>Release:        8-current
>Organization:
>Environment:
FreeBSD azacca.legios.org 8.0-CURRENT-200905 FreeBSD 8.0-CURRENT-200905 #0: Mon May  4 21:11:26 UTC 2009     root at mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
When padlock(4) is loaded and utilised, the console gets flooded with "fpudna in kernel mode!" messages.

I am using padlock on a Via VB8001 Nano board.

It doesn't appear to cause any crashes etc. however it does appear to generate thousands of messages per minute, which makes me think that it's slowing down the system as a whole.
>How-To-Repeat:
kldload padlock
geli init -P -e aes -l 256 -K /root/geli.key -s 4096 /dev/da0
geli attach -pk /root/geli.key /dev/da0
newfs /dev/da0.eli
mount /dev/da0.eli /mnt
cd /mnt
dd if=/dev/zero of=file.000 bs=1m count=100
>Fix:
None known

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


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