On Sat, Jun 04, 2022 at 10:32:46AM +0200, 'Dmitry Vyukov' via syzkaller-bugs wrote: > On Fri, 3 Jun 2022 at 18:12, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > > > But again, is this a "real and able to be triggered from userspace" > > problem, or just fault-injection-induced? > > Then this is something to fix in the fault injection subsystem. > Testing systems shouldn't be reporting false positives. > What allocations cannot fail in real life? Is it <=page_size? > Apparently in 2014, anything less than *EIGHT?!!* pages succeeded! https://lwn.net/Articles/627419/ I have been on the look out since that article and never seen anyone mention it changing. I think we should ignore that and say that anything over PAGE_SIZE can fail. Possibly we could go smaller than PAGE_SIZE... regards, dan carpenter
