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@xxxxxxxxxxx>
---
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 08d7b136851fabb0a1c1032abcf9c01550e9f4f5..068805daf5fa4e0894be4ea4e8f2e9f756cfdcd3 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -8740,9 +8740,9 @@ 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;
@@ -8809,9 +8809,9 @@ 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,
---
base-commit: 3d933084a072fd5fb5da54c06a017abc0412c86f
change-id: 20250530-ath11k-use-non-atomic-iterator-b89709d5cf48
Best regards,
--
Baochen Qiang <quic_bqiang@xxxxxxxxxxx>
