Messages in this thread | | | Date | Mon, 6 Jun 2022 15:38:39 +0300 | From | Dan Carpenter <> | Subject | Re: [syzbot] general protection fault in __device_attach |
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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@linuxfoundation.org> 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
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