28a5501c33
No matter from hwsim_remove or hwsim_del_radio_nl, hwsim_del fails to remove the entry in the edges list. Take the example below, phy0, phy1 and e0 will be deleted, resulting in e1 not freed and accessed in the future. hwsim_phys | ------------------------------ | | phy0 (edges) phy1 (edges) ----> e1 (idx = 1) ----> e0 (idx = 0) Fix this by deleting and freeing all the entries in the edges list between hwsim_edge_unsubscribe_me and list_del(&phy->list). Reported-by: syzbot+b80c9959009a9325cdff@syzkaller.appspotmail.com Fixes: 1c9f4a3fce77 ("ieee802154: hwsim: fix rcu handling") Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/r/20210616020901.2759466-1-mudongliangabcd@gmail.com Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>