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a9540a4e33
Fixes potential crashes in various drivers when checking the status of interfaces that are down Signed-off-by: Felix Fietkau <nbd@nbd.name>
25 lines
827 B
Diff
25 lines
827 B
Diff
From: Felix Fietkau <nbd@nbd.name>
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Date: Wed, 2 Oct 2024 11:45:35 +0200
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Subject: [PATCH] wifi: mac80211: do not pass a stopped vif to the driver in
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.get_txpower
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Avoid potentially crashing in the driver because of uninitialized private data
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Fixes: 5b3dc42b1b0d ("mac80211: add support for driver tx power reporting")
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Cc: stable@vger.kernel.org
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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--- a/net/mac80211/cfg.c
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+++ b/net/mac80211/cfg.c
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@@ -3134,7 +3134,8 @@ static int ieee80211_get_tx_power(struct
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struct ieee80211_local *local = wiphy_priv(wiphy);
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struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
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- if (local->ops->get_txpower)
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+ if (local->ops->get_txpower &&
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+ (sdata->flags & IEEE80211_SDATA_IN_DRIVER))
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return drv_get_txpower(local, sdata, dbm);
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if (local->emulate_chanctx)
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