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nl80211: Avoid AP mode BUG_ON hang with invalid lock assert 

"cfg80211: add assert_cfg80211_lock() to ensure proper protection"
added assert_cfg80211_lock() calls into various places. At least
one of them, nl80211_send_wiphy(), should not have been there. That
triggers the BUG_ON in assert_cfg80211_lock() and pretty much kills
the kernel whenever someone runs hostapd.. Remove that call and make
assert_cfg80211_lock() use WARN_ON instead of BUG_ON to be a bit more
friendly to users.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jouni Malinen 2009-02-24 16:49:58 +02:00 committed by John W. Linville
parent 222d0b33b3
commit 0bfbce18b9
2 changed files with 1 additions and 3 deletions
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2
net/wireless/core.h
View File

@ -76,7 +76,7 @@ extern struct list_head cfg80211_drv_list;
static inline void assert_cfg80211_lock(void)
{
BUG_ON(!mutex_is_locked(&cfg80211_mutex));
WARN_ON(!mutex_is_locked(&cfg80211_mutex));
}
/*

2
net/wireless/nl80211.c
View File

@ -137,8 +137,6 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
int i;
u16 ifmodes = dev->wiphy.interface_modes;
assert_cfg80211_lock();
hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
if (!hdr)
return -1;