On Tue, Oct 04, 2022 at 07:58:14AM +0900, J. R. Okajima wrote: > Al Viro: > > Argh.... Try this: > > > > fix coredump breakage caused by badly tested "[coredump] don't use __kernel_write() on kmap_local_page()" > > Thanx, it passed my local test. > > > > * fix for problem that occurs on rather uncommon setups (and hadn't > > been observed in the wild) sent very late in the cycle. > > If the commit was merged in RC versions, I guess someone found the > problem earlier. Most likely - the breakage is really not hard to trigger ;-/ Linus, which way would you prefer to handle that? It's a brown paperbag stuff - the worst I had in quite a while. Mea maxima culpa ;-/ One variant would be to revert the original patch, put its (hopefully) fixed variant into -next and let it sit there for a while. Another is to put this incremental into -next and merge it into mainline once it gets a sane amount of testing. Up to you...