The problem is drivers/net/wireless/zd1211/zd_mac.c:update_qual_rssi().
Specifically the compare_ether_addr() call. Now, ieee80211_hdr_3addr
is marked with attribute((unaligned)) but compare_ether_addr() does
not know that and does "u16 *" dereferences in the optimized
comparison.
Shaddy I attach a hack patch that you can use which should get
rid of the warnings.
Wireless folks, I would suggest we do some auditing of the
compare_ether_addr() calls and for the ones that are operating
on these potentially unaligned structs we change it to either
a straight memcmp() or some new routine which will more reflect
the issue (say something like "compare_ether_addr_unaligned()"
or "ieee80211_compare_ether_addr()").
diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c
b/drivers/net/wireless/zd1211rw/zd_mac.c
index a903645..4999869 100644
--- a/drivers/net/wireless/zd1211rw/zd_mac.c
+++ b/drivers/net/wireless/zd1211rw/zd_mac.c
@@ -1047,8 +1047,13 @@ static void update_qual_rssi(struct zd_mac *mac,
hdr = (struct ieee80211_hdr_3addr *)buffer;
if (length < offsetof(struct ieee80211_hdr_3addr, addr3))
return;
+#if 1
+ if (memcmp(hdr->addr2, zd_mac_to_ieee80211(mac)->bssid, ETH_ALEN))
+ return;
+#else
if (compare_ether_addr(hdr->addr2, zd_mac_to_ieee80211(mac)->bssid) !=
0)
return;
+#endif
spin_lock_irqsave(&mac->lock, flags);
i = mac->stats_count % ZD_MAC_STATS_BUFFER_SIZE;
-
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