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mac80211: Drop frames from invalid MAC address in ad-hoc mode
[ Upstream commit a6555f8445
]
WARNING: CPU: 1 PID: 9 at net/mac80211/sta_info.c:554
sta_info_insert_rcu+0x121/0x12a0
Modules linked in:
CPU: 1 PID: 9 Comm: kworker/u8:1 Not tainted 5.14.0-rc7+ #253
Workqueue: phy3 ieee80211_iface_work
RIP: 0010:sta_info_insert_rcu+0x121/0x12a0
...
Call Trace:
ieee80211_ibss_finish_sta+0xbc/0x170
ieee80211_ibss_work+0x13f/0x7d0
ieee80211_iface_work+0x37a/0x500
process_one_work+0x357/0x850
worker_thread+0x41/0x4d0
If an Ad-Hoc node receives packets with invalid source MAC address,
it hits a WARN_ON in sta_info_insert_check(), this can spam the log.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20210827144230.39944-1-yuehaibing@huawei.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
parent
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commit
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1 changed files with 2 additions and 1 deletions
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@ -3714,7 +3714,8 @@ static bool ieee80211_accept_frame(struct ieee80211_rx_data *rx)
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if (!bssid)
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return false;
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if (ether_addr_equal(sdata->vif.addr, hdr->addr2) ||
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ether_addr_equal(sdata->u.ibss.bssid, hdr->addr2))
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ether_addr_equal(sdata->u.ibss.bssid, hdr->addr2) ||
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!is_valid_ether_addr(hdr->addr2))
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return false;
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if (ieee80211_is_beacon(hdr->frame_control))
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return true;
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