ath12k_mac_setup_channels_rates() frees band channel arrays on failure but either leaves the pointers non-NULL or clears the wrong band. Later ath12k_mac_cleanup_unregister() frees the same pointers again. Clear the correct sbands[].channels pointers after kfree(), including a copy-paste bug that nulled 2 GHz after freeing 6 GHz channels. Fixes: acc152f9be20 ("wifi: ath12k: combine channel list for split-phy devices in single-wiphy") Signed-off-by: Linkai Gong --- drivers/net/wireless/ath/ath12k/mac.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c index a0928890671a..5468a8d2d5d5 100644 --- a/drivers/net/wireless/ath/ath12k/mac.c +++ b/drivers/net/wireless/ath/ath12k/mac.c @@ -14275,6 +14275,7 @@ static int ath12k_mac_setup_channels_rates(struct ath12k *ar, sizeof(ath12k_6ghz_channels), GFP_KERNEL); if (!channels) { kfree(ar->mac.sbands[NL80211_BAND_2GHZ].channels); + ar->mac.sbands[NL80211_BAND_2GHZ].channels = NULL; return -ENOMEM; } @@ -14325,7 +14326,9 @@ static int ath12k_mac_setup_channels_rates(struct ath12k *ar, GFP_KERNEL); if (!channels) { kfree(ar->mac.sbands[NL80211_BAND_2GHZ].channels); + ar->mac.sbands[NL80211_BAND_2GHZ].channels = NULL; kfree(ar->mac.sbands[NL80211_BAND_6GHZ].channels); + ar->mac.sbands[NL80211_BAND_6GHZ].channels = NULL; return -ENOMEM; } @@ -14365,7 +14368,7 @@ static int ath12k_mac_setup_channels_rates(struct ath12k *ar, kfree(ar->mac.sbands[NL80211_BAND_2GHZ].channels); ar->mac.sbands[NL80211_BAND_2GHZ].channels = NULL; kfree(ar->mac.sbands[NL80211_BAND_6GHZ].channels); - ar->mac.sbands[NL80211_BAND_2GHZ].channels = NULL; + ar->mac.sbands[NL80211_BAND_6GHZ].channels = NULL; kfree(channels); band->channels = NULL; return ret; -- 2.25.1