"Data modified on freelist"?

[Rich Wales]

I'm running 4-STABLE / 4.11-PRERELEASE (CVS tag=RELENG_4), dated 2004-
12-10, on an AMD Athlon system at home.

Last night, I got the following message from the kernel:

     Data modified on freelist: word 14 of object 0xc2aff700
     size 256 previous type FFS node (0xdeadc09e != 0xdeadc0de)

What does this mean?  Is it a reason for me to worry?  Any ideas on
what might have caused it or what I should do about it?

Rich Wales            richw at richw.org            http://www.richw.org