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authorStanislaw Gruszka <sgruszka@redhat.com>2012-10-15 14:52:41 +0200
committerJohannes Berg <johannes.berg@intel.com>2012-10-15 17:21:34 +0200
commit6863255bd0e48bc41ae5a066d5c771801e92735a (patch)
tree9bb64e599fb14c424480f7b4cda6abc5c7754c04 /net
parentdf9b42963f2d010ae3163a894ce22cf6b27cd344 (diff)
downloadvexpress-lsk-6863255bd0e48bc41ae5a066d5c771801e92735a.tar.gz
cfg80211/mac80211: avoid state mishmash on deauth
Avoid situation when we are on associate state in mac80211 and on disassociate state in cfg80211. This can results on crash during modules unload (like showed on this thread: http://marc.info/?t=134373976300001&r=1&w=2) and possibly other problems. Reported-by: Pedro Francisco <pedrogfrancisco@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/mlme.c5
-rw-r--r--net/wireless/mlme.c12
2 files changed, 6 insertions, 11 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index e714ed8bb19..e510a33fec7 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -3549,6 +3549,7 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
+ bool tx = !req->local_state_change;
mutex_lock(&ifmgd->mtx);
@@ -3565,12 +3566,12 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
if (ifmgd->associated &&
ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
- req->reason_code, true, frame_buf);
+ req->reason_code, tx, frame_buf);
} else {
drv_mgd_prepare_tx(sdata->local, sdata);
ieee80211_send_deauth_disassoc(sdata, req->bssid,
IEEE80211_STYPE_DEAUTH,
- req->reason_code, true,
+ req->reason_code, tx,
frame_buf);
}
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 8016fee0752..904a7f36832 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -457,20 +457,14 @@ int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
.reason_code = reason,
.ie = ie,
.ie_len = ie_len,
+ .local_state_change = local_state_change,
};
ASSERT_WDEV_LOCK(wdev);
- if (local_state_change) {
- if (wdev->current_bss &&
- ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) {
- cfg80211_unhold_bss(wdev->current_bss);
- cfg80211_put_bss(&wdev->current_bss->pub);
- wdev->current_bss = NULL;
- }
-
+ if (local_state_change && (!wdev->current_bss ||
+ !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)))
return 0;
- }
return rdev->ops->deauth(&rdev->wiphy, dev, &req);
}