I've just started the kernel build for 7.1 with the patch applied, won't get a chance to try it out until the weekend I'd say.
I've got current built, I just need to spend some time testing it out to see if I can get it to crash in a reproducible way or at all. While it was building I downloaded a binary generic MP kernel from the daily builds (dated Dec 5th), and that is much improved, it will run the machine overnight where the 7.1 generic mp will crash when provoked by disk access, or just after sitting idle for less than a hour. I have had the daily build crash (frozen the same way) once, when running the fstime benchmark in the bytebench package, but it isn't reproducible as I've had runs that worked fine. It will run a number of instances of dd writing zeros into some files without crashing, and loading up all the CPUs with work is ok as well, perhaps it was a unrelated bug.
Also interesting, I was playing around on my machine whilst running the uni-processor kernel and found quite by accident the dbri audio was working in it's limited weird way. I was trying out xscavenger and to my surprise got sound. I was under the impression that it (dbri sound) wasn't working, I'll have a quick go with a MP kernel later on to see if it works there.