Comment 49 for bug 330824

@Andrius,

Unfortunately, I suspect it's not quite so simple as this. I have had one user who has been using a stock linux kernel using 2.6.28, 2.6.28.4, and 2.6.29-rc6 --- but it takes about a month or so before he's able to replicate the problem.

So at this point, given what everyone has reported, my best guess is that there is something in the Ubuntu "Sauce" patches which makes the bug much more likely to manifest, but which may not be the root cause of the problem by itself.

So what this means is at this point, is that I need some volunteer to try doing a git bisect, this time between a stock kernel version used as the base for an official Ubuntu kernel, and the fully applied set of patches for an Ubuntu kernel, so we can find which patch in the Ubuntu sauce series seems to make this problem easy to manifest (i.e., appearing within hours, versus taking a month or so of normal usage before it shows up). When we find the "problem" patch, it may not be the guilty patch, but it might unmask the real root cause of the problem, and so by looking at the patch, maybe we'll get a good hint about what the real underlying problem might be.

I'm currently frightfully busy, trying to get ready for the upcoming Linux Storage and Filesystem Workshop and the Linux Foundation Collaboration Summit next week, so I have very little time to do the grunt work --- so if someone could step forward and try to do the git bisect to determine the Ubuntu "sauce" patch that seems to be responsible for making the hang easy to occur, I would be terribly grateful.

Thanks in advance....