Messages in this thread | | | Date | Thu, 19 Dec 2013 15:24:16 -0500 | From | Dave Jones <> | Subject | Re: bad page state in 3.13-rc4 |
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On Thu, Dec 19, 2013 at 02:53:52PM -0500, Benjamin LaHaise wrote:
> is populated into the page tables). The only place I can see things going > off the rails is if the get_user_pages() call fails. It's possible trinity > could be arranging things so that the get_user_pages() call is failing > somehow. Also, if it were a double free of a page, we should at least get > a VM_BUG() occuring when the page's count is 0. > > Dave -- do you have CONFIG_DEBUG_VM on in your test rig?
Yes. Note the original trace in this thread was a VM_BUG_ON(atomic_read(&page->_count) <= 0);
Right after these crashes btw, the box locks up solid. So bad that traces don't always make it over usb-serial. Annoying.
Dave
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