On Wed 27-06-18 13:59:27, Michal Hocko wrote: > On Wed 27-06-18 13:53:49, Jan Kara wrote: > > On Wed 27-06-18 13:32:21, Michal Hocko wrote: > [...] > > > Appart from that, do we really care about 32b here? Big DIO, IB users > > > seem to be 64b only AFAIU. > > > > IMO it is a bad habit to leave unpriviledged-user-triggerable oops in the > > kernel even for uncommon platforms... > > Absolutely agreed! I didn't mean to keep the blow up for 32b. I just > wanted to say that we can stay with a simple solution for 32b. I thought > the g-u-p-longterm has plugged the most obvious breakage already. But > maybe I just misunderstood. Most yes, but if you try hard enough, you can still trigger the oops e.g. with appropriately set up direct IO when racing with writeback / reclaim. Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR
