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authorYOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org>2010-04-04 19:59:30 +0200
committerDavid S. Miller <davem@davemloft.net>2010-04-06 09:12:30 +0200
commit2f787b0b76bf5de2eaa3ca3a29d89123ae03c856 (patch)
tree6b842dccc0c5a8e1e26ed41811bac8cbff8a474c /net
parentnet: Add a missing local_irq_enable() (diff)
downloadlinux-2f787b0b76bf5de2eaa3ca3a29d89123ae03c856.tar.xz
linux-2f787b0b76bf5de2eaa3ca3a29d89123ae03c856.zip
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>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/main.c3
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);