On Mon 26-09-22 16:20:13, Florian Westphal wrote: > Michal Hocko <mhocko@xxxxxxxx> wrote: > > On Mon 26-09-22 15:08:08, Florian Westphal wrote: > > [...] > > > To the best of my knowledge there are users of this interface that > > > invoke it with rcu read lock held, and since those always nest, the > > > rcu_read_unlock() won't move us to GFP_KERNEL territory. > > > > Fiar point. I can see a comment above rhashtable_insert_fast which is > > supposed to be used by drivers and explicitly documented to be > > compatible with an atomic context. So the above is clearly a no-go > > > > In that case I would propose to go with the patch going > > http://lkml.kernel.org/r/YzFplwSxwwsLpzzX@xxxxxxxxxxxxxx direction. > > FWIW that patch works for me. Will you do a formal patch submission? Feel free to use it and glue it to the actual bug report. Thanks! -- Michal Hocko SUSE Labs
