On Tue, Feb 28, 2023 at 07:26:48PM +0100, Helge Deller wrote: > I can test both parisc32 and parisc64. > > > Just to confirm: your "can be killed with ^C" had been on the > > mainline parisc kernel (with userfaultfd enable, of course, or it wouldn't > > hang up at all), right? > > It was a recent mainline kernel with your patch. Er... Reproducer *is* supposed to block; the bug is that on the kernel without this patch it would (AFAICS) be impossible to kill - not even with kill -9. With bug fixed the behaviour should be "blocks and is killable", i.e. what you've reported. What does it do on unpatched kernel? *IF* the big is there, it would block and be unkillable by any means. Could you verify that?
