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ieee802154: hwsim: Fix possible memory leak in hwsim_subscribe_all_others

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In hwsim_subscribe_all_others, the error handling code performs
incorrectly if the second hwsim_alloc_edge fails. When this issue occurs,
it goes to sub_fail, without cleaning the edges allocated before.

Fixes: f25da51fdc ("ieee802154: hwsim: add replacement for fakelb")
Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
Acked-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20210611015812.1626999-1-mudongliangabcd@gmail.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
This commit is contained in:
Dongliang Mu
2021-06-11 09:58:12 +08:00
committed by Stefan Schmidt
parent f2386cf7c5
commit ab372c2293
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ieee802154/mac802154_hwsim.c
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@@ -715,6 +715,8 @@ static int hwsim_subscribe_all_others(struct hwsim_phy *phy)
return 0;
sub_fail:
hwsim_edge_unsubscribe_me(phy);
me_fail:
rcu_read_lock();
list_for_each_entry_rcu(e, &phy->edges, list) {
@@ -722,8 +724,6 @@ static int hwsim_subscribe_all_others(struct hwsim_phy *phy)
hwsim_free_edge(e);
}
rcu_read_unlock();
sub_fail:
hwsim_edge_unsubscribe_me(phy);
return -ENOMEM;
}