On Thu, 18 Nov 2021, J. Bruce Fields wrote: > On Wed, Nov 17, 2021 at 11:46:49AM +1100, NeilBrown wrote: > > I have a dream of making nfsd threads start and stop dynamically. > > It's a good dream! > > I haven't had a chance to look at these at all yet, I just kicked off > tests to run overnight, and woke up to the below. > > This happened on the client, probably the first time it attempted to do > an nfsv4 mount, so something went wrong with setup of the callback > server. > > --b. > > [ 285.585061] divide error: 0000 [#1] PREEMPT SMP KASAN PTI It appears that serv->sv_nrpools is zero. I don't think I changed anything relating to that. I did think it off that nfs-callback uses svc_create_pooled, but doesn't ensure it requests as many threads as pools.... probably not related though. I'll dig in a bit more later. Thanks, NeilBrown
