提交 2f787b0b 编写于 作者: Y YOSHIFUJI Hideaki / 吉藤英明 提交者: David S. Miller

mac80211: Ensure initializing private mc_list in prepare_multicast().

Fix kernel panic by NULL pointer dereference in the context of
ieee80211_ops->prepare_multicast().

This bug was introduced by commit 22bedad3.. ("net: convert
multicast list to list_head").

Call __hw_addr_init() in ieee80211_alloc_hw() to initialize
list_head of private device multicast list, like we do in
bond_init().
Signed-off-by: NYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Reviewed-by: NJiri Pirko <jpirko@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 e4008276
......@@ -388,6 +388,9 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
INIT_LIST_HEAD(&local->interfaces);
__hw_addr_init(&local->mc_list);
mutex_init(&local->iflist_mtx);
mutex_init(&local->scan_mtx);
......
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