6.15-stable review patch. If anyone has any objections, please let me know.
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From: Baochen Qiang quic_bqiang@quicinc.com
[ Upstream commit 65c12b104cb942d588a1a093acc4537fb3d3b129 ]
ath11k_mac_disable_peer_fixed_rate() is passed as the iterator to ieee80211_iterate_stations_atomic(). Note in this case the iterator is required to be atomic, however ath11k_mac_disable_peer_fixed_rate() does not follow it as it might sleep. Consequently below warning is seen:
BUG: sleeping function called from invalid context at wmi.c:304 Call Trace: <TASK> dump_stack_lvl __might_resched.cold ath11k_wmi_cmd_send ath11k_wmi_set_peer_param ath11k_mac_disable_peer_fixed_rate ieee80211_iterate_stations_atomic ath11k_mac_op_set_bitrate_mask.cold
Change to ieee80211_iterate_stations_mtx() to fix this issue.
Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.30
Fixes: d5c65159f289 ("ath11k: driver for Qualcomm IEEE 802.11ax devices") Signed-off-by: Baochen Qiang quic_bqiang@quicinc.com Link: https://patch.msgid.link/20250603-ath11k-use-non-atomic-iterator-v1-1-d75762... Signed-off-by: Jeff Johnson jeff.johnson@oss.qualcomm.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/ath/ath11k/mac.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c index 4763b271309a..9514e95d5020 100644 --- a/drivers/net/wireless/ath/ath11k/mac.c +++ b/drivers/net/wireless/ath/ath11k/mac.c @@ -8734,9 +8734,9 @@ ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw, arvif->vdev_id, ret); return ret; } - ieee80211_iterate_stations_atomic(ar->hw, - ath11k_mac_disable_peer_fixed_rate, - arvif); + ieee80211_iterate_stations_mtx(ar->hw, + ath11k_mac_disable_peer_fixed_rate, + arvif); } else if (ath11k_mac_bitrate_mask_get_single_nss(ar, arvif, band, mask, &single_nss)) { rate = WMI_FIXED_RATE_NONE; @@ -8803,9 +8803,9 @@ ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw, }
mutex_lock(&ar->conf_mutex); - ieee80211_iterate_stations_atomic(ar->hw, - ath11k_mac_disable_peer_fixed_rate, - arvif); + ieee80211_iterate_stations_mtx(ar->hw, + ath11k_mac_disable_peer_fixed_rate, + arvif);
arvif->bitrate_mask = *mask; ieee80211_iterate_stations_atomic(ar->hw,