On Sat, 2022-09-03 at 10:13 +0800, Huang, Shaoqin wrote: > > + BUG_ON(is_zero_pfn(pfn) && rw); > > + > > Why we need use BUG_ON() here? Based on [1], we should avoid to use > the > BUG_ON() due to it will panic the machine. > > [1]: > https://lore.kernel.org/lkml/20220824163100.224449-1-david@xxxxxxxxxx/ Yea, you are probably right. All the rest of this checker uses BUG_ON() though. Maybe they should all be something else? Just felt weird to have this be the only check that is different. I don't have any objections to changing it to WARN_ON(). Should I switch the rest of the checks here while I'm at it?