On Tue, Jan 19, 2016 at 02:38:45PM -0500, Tejun Heo wrote: > Hello, > > On Tue, Jan 19, 2016 at 08:36:18PM +0100, Christian Borntraeger wrote: > > No, its not a task_struct. Activating some more debug information did indeed > > revealed several other issues (overwritten redzones etc). Unfortunately I > > only saw the broken things after the facts, so I do not know which code did that. > > When I disabled the cgroup controllers in libvirt I was no longer able to trigger > > the bugs. Still trying to narrow things down. > > Hmmm... that's worrying. CONFIG_DEBUG_PAGEALLOC sometimes can catch > these sort of bugs red-handed. Might worth trying. Christian, just to avoid that you get surprised like I did: CONFIG_DEBUG_PAGEALLOC requires in the meantime an additional kernel parameter "debug_pagealloc=on" to be active. That change was introduced a year ago, so it was probably only me who wasn't aware of that change :) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
