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@@ -0,0 +1,34 @@
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+From: David Bauer <[email protected]>
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+Date: Thu, 30 Nov 2023 07:32:52 +0100
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+Subject: [PATCH] mac80211: avoid crashing on invalid band info
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+
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+Frequent crashes have been observed on MT7916 based platforms. While the
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+root of these crashes are currently unknown, they happen when decoding
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+rate information of connected STAs in AP mode. The rate-information is
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+associated with a band which is not available on the PHY.
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+
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+Check for this condition in order to avoid crashing the whole system.
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+This patch should be removed once the roout cause has been found and
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+fixed.
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+
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+Link: https://github.com/freifunk-gluon/gluon/issues/2980
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+
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+Signed-off-by: David Bauer <[email protected]>
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+---
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+
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+--- a/net/mac80211/sta_info.c
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++++ b/net/mac80211/sta_info.c
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+@@ -2422,6 +2422,13 @@ static void sta_stats_decode_rate(struct
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+
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+ sband = local->hw.wiphy->bands[band];
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+
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++ if (!sband) {
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++ wiphy_warn(local->hw.wiphy,
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++ "Invalid band %d\n",
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++ band);
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++ break;
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++ }
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++
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+ if (WARN_ON_ONCE(!sband->bitrates))
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+ break;
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+
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David Bauer