Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote: > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > > Reported-by: syzbot+154bd5be532a63aa778b@xxxxxxxxxxxxxxxxxxxxxxxxx > > Is this also fixed by "netfilter: arptables: use pernet ops struct > during unregister"? > The warning is the same, but the stack is different... No, this is a different bug. In both cases the caller attempts to unregister a hook that the core can't find, but in this case the caller is nftables, not arptables.