diff options
| author | YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org> | 2010-04-04 17:59:30 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-06 00:12:30 -0700 |
| commit | 2f787b0b76bf5de2eaa3ca3a29d89123ae03c856 (patch) | |
| tree | 6b842dccc0c5a8e1e26ed41811bac8cbff8a474c | |
| parent | e4008276fddd10445ff06707694a938cb7f35ed4 (diff) | |
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 22bedad3c.. ("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: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Reviewed-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/mac80211/main.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 84ad249a4e2e..0b82cd2f781e 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -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); |