Messages in this thread | | | Date | Mon, 26 Sep 2022 16:32:26 +0200 | From | Michal Hocko <> | Subject | Re: [PATCH mm] mm: fix BUG with kvzalloc+GFP_ATOMIC |
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On Mon 26-09-22 16:20:13, Florian Westphal wrote: > Michal Hocko <mhocko@suse.com> 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@dhcp22.suse.cz 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
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