Hello!
The current wireless-testing.git has a problem. I'm trying to run
wpa_supplicant on an interface created by carl9170 (with nl80211
driver), and it oopses in nl80211_trigger_scan(). It turns out it
oopses here:
for (i = 0; i < IEEE80211_NUM_BANDS; i++)
request->rates[i] = (1 << wiphy->bands[i]->n_bitrates) - 1;
Here's the self-explanatory debug output I added:
[ 460.190157] IEEE80211_NUM_BANDS = 2
[ 460.193636] request = ffff8801246dc500
[ 460.197373] request->rates = ffff8801246dc520
[ 460.201748] wiphy = ffff8800b78b84e0
[ 460.205317] wiphy->bands = ffff8800b78b8590
[ 460.209489] i = 0, wiphy->bands[i] = ffffffffa00a80a0
[ 460.214559] i = 1, wiphy->bands[i] = (null)
wiphy->bands[1] is NULL, so wiphy->bands[1]->n_bitrates is invalid.
Likewise, if I run "iwconfig wlanX scan", I get an oops in
cfg80211_wext_siwscan() on line 866:
for (i = 0; i < IEEE80211_NUM_BANDS; i++)
creq->rates[i] = (1 << wiphy->bands[i]->n_bitrates) - 1;
Both pieces of code were added by:
commit 58389c69150e6032504dfcd3edca6b1975c8b5bc
Author: Johannes Berg <johannes.berg@xxxxxxxxx>
Date: Mon Jul 18 18:08:35 2011 +0200
cfg80211: allow userspace to control supported rates in scan
--
Regards,
Pavel Roskin
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