From 1c89a8e3d9a235454169e189ea6c463bfa8749ab Mon Sep 17 00:00:00 2001 From: Alexander Aring Date: Sun, 12 Aug 2018 16:24:56 -0400 Subject: [PATCH] ieee802154: hwsim: using right kind of iteration This patch fixes the error path to unsubscribe all other phy's from current phy. The actually code using a wrong kind of list iteration may copied from the case to unsubscribe the current phy from all other phy's. Cc: Stefan Schmidt Reported-by: Dan Carpenter Fixes: f25da51fdc38 ("ieee802154: hwsim: add replacement for fakelb") Signed-off-by: Alexander Aring Signed-off-by: David S. Miller --- drivers/net/ieee802154/mac802154_hwsim.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/ieee802154/mac802154_hwsim.c b/drivers/net/ieee802154/mac802154_hwsim.c index 07a493d..bf70ab8 100644 --- a/drivers/net/ieee802154/mac802154_hwsim.c +++ b/drivers/net/ieee802154/mac802154_hwsim.c @@ -735,10 +735,12 @@ static int hwsim_subscribe_all_others(struct hwsim_phy *phy) return 0; me_fail: - list_for_each_entry(phy, &hwsim_phys, list) { + rcu_read_lock(); + list_for_each_entry_rcu(e, &phy->edges, list) { list_del_rcu(&e->list); hwsim_free_edge(e); } + rcu_read_unlock(); sub_fail: hwsim_edge_unsubscribe_me(phy); return -ENOMEM; -- 2.7.4