On Tue, Apr 30, 2019 at 02:53:11PM +0200, Florian Westphal wrote: > We can oops in nf_tables_fill_rule_info(). > > Its not possible to fetch previous element in rcu-protected lists > when deletions are not prevented somehow: list_del_rcu poisons > the ->prev pointer value. > > Before rcu-conversion this was safe as dump operations did hold > nfnetlink mutex. > > Pass previous rule as argument, obtained by keeping a pointer to > the previous rule during traversal. Applied, thanks.
