Comment 43 for bug 719446

May I just add - as mentioned in one of my posts above, the commit just preceding the one I bisected this bug to may be related, as on the system where this bug occurs there are some very short (quarter to half a second?) freezes in cases when this bug occurs, instead of a hard freeze, which disappear when that commit is removed. Both of those commits modify page allocator (I can find that commit's sha-1 if needed, but it directly precedes this one). I can also report another bug for it if needed, but it may be wiser to simply have a look at both of the commits.
I don't have any experience in kernel development so I may of course be mistaken as to the role of preceding commit.

Also, my way of reproducing this bug, which seemed to work every time:
1. On an affected system, run Open Office, GIMP, Inkscape or any other memory-hogging application.
2. Use scp to copy a large file over the local network (I used a 2 Gb DVD image).