openwrt/package/kernel/mac80211/patches/subsys/780-avoid-crashing-missing-band.patch
Hauke Mehrtens 7e42fdcafe mac80211: Update to version 6.1.110-1
This updates mac80211 to version 6.1.110-1. This code is based on Linux
6.1.110 and contains all fixes included in the upstream wireless
subsystem from that kernel version. This includes many bugfixes and also
some security fixes.

The removed patches are already integrated in upstream Linux 6.1.110.

The following patches were integrated in upstream Linux:
   subsys/311-v6.2-wifi-mac80211-fix-and-simplify-unencrypted-drop-chec.patch
   subsys/312-v6.3-wifi-cfg80211-move-A-MSDU-check-in-ieee80211_data_to.patch
   subsys/313-v6.3-wifi-cfg80211-factor-out-bridge-tunnel-RFC1042-heade.patch
   subsys/314-v6.3-wifi-mac80211-remove-mesh-forwarding-congestion-chec.patch
   subsys/315-v6.3-wifi-mac80211-fix-receiving-A-MSDU-frames-on-mesh-in.patch
   subsys/316-v6.3-wifi-mac80211-add-a-workaround-for-receiving-non-sta.patch
   subsys/321-mac80211-fix-mesh-forwarding.patch
   subsys/322-wifi-mac80211-fix-mesh-path-discovery-based-on-unica.patch
   subsys/329-wifi-mac80211-fix-receiving-mesh-packets-in-forwardi.patch
   subsys/339-wifi-cfg80211-fix-receving-mesh-packets-without-RFC1.patch
   subsys/350-v6.3-wifi-mac80211-Allow-NSS-change-only-up-to-capability.patch
   subsys/351-v6.9-wifi-mac80211-track-capability-opmode-NSS-separately.patch

Link: https://github.com/openwrt/openwrt/pull/16368
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2024-09-15 01:59:41 +02:00

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From: David Bauer <mail@david-bauer.net>
Date: Thu, 30 Nov 2023 07:32:52 +0100
Subject: [PATCH] mac80211: avoid crashing on invalid band info
Frequent crashes have been observed on MT7916 based platforms. While the
root of these crashes are currently unknown, they happen when decoding
rate information of connected STAs in AP mode. The rate-information is
associated with a band which is not available on the PHY.
Check for this condition in order to avoid crashing the whole system.
This patch should be removed once the roout cause has been found and
fixed.
Link: https://github.com/freifunk-gluon/gluon/issues/2980
Signed-off-by: David Bauer <mail@david-bauer.net>
---
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -2382,6 +2382,13 @@ static void sta_stats_decode_rate(struct
sband = local->hw.wiphy->bands[band];
+ if (!sband) {
+ wiphy_warn(local->hw.wiphy,
+ "Invalid band %d\n",
+ band);
+ break;
+ }
+
if (WARN_ON_ONCE(!sband->bitrates))
break;