| Message ID | 20240905042851.2282306-1-quic_rgnanase@quicinc.com |
|---|---|
| State | New |
| Headers | show |
| Series | wifi: ath12k: Skip Rx TID cleanup for self peer | expand |
Ramya Gnanasekar <quic_rgnanase@quicinc.com> wrote: > During peer create, dp setup for the peer is done where Rx TID is > updated for all the TIDs. Peer object for self peer will not go through > dp setup. > > When core halts, dp cleanup is done for all the peers. While cleanup, > rx_tid::ab is accessed which causes below stack trace for self peer. > > WARNING: CPU: 6 PID: 12297 at drivers/net/wireless/ath/ath12k/dp_rx.c:851 > Call Trace: > __warn+0x7b/0x1a0 > ath12k_dp_rx_frags_cleanup+0xd2/0xe0 [ath12k] > report_bug+0x10b/0x200 > handle_bug+0x3f/0x70 > exc_invalid_op+0x13/0x60 > asm_exc_invalid_op+0x16/0x20 > ath12k_dp_rx_frags_cleanup+0xd2/0xe0 [ath12k] > ath12k_dp_rx_frags_cleanup+0xca/0xe0 [ath12k] > ath12k_dp_rx_peer_tid_cleanup+0x39/0xa0 [ath12k] > ath12k_mac_peer_cleanup_all+0x61/0x100 [ath12k] > ath12k_core_halt+0x3b/0x100 [ath12k] > ath12k_core_reset+0x494/0x4c0 [ath12k] > > sta object in peer will be updated when remote peer is created. Hence > use peer::sta to detect the self peer and skip the cleanup. > > Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 > Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3 > > Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices") > Signed-off-by: Ramya Gnanasekar <quic_rgnanase@quicinc.com> > Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com> > Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> Patch applied to ath-next branch of ath.git, thanks. 1a0c640ce1cd wifi: ath12k: Skip Rx TID cleanup for self peer
diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c index 8106297f0bc1..3949bef1db3c 100644 --- a/drivers/net/wireless/ath/ath12k/mac.c +++ b/drivers/net/wireless/ath/ath12k/mac.c @@ -917,7 +917,9 @@ void ath12k_mac_peer_cleanup_all(struct ath12k *ar) spin_lock_bh(&ab->base_lock); list_for_each_entry_safe(peer, tmp, &ab->peers, list) { - ath12k_dp_rx_peer_tid_cleanup(ar, peer); + /* Skip Rx TID cleanup for self peer */ + if (peer->sta) + ath12k_dp_rx_peer_tid_cleanup(ar, peer); list_del(&peer->list); kfree(peer); }
During peer create, dp setup for the peer is done where Rx TID is updated for all the TIDs. Peer object for self peer will not go through dp setup. When core halts, dp cleanup is done for all the peers. While cleanup, rx_tid::ab is accessed which causes below stack trace for self peer. WARNING: CPU: 6 PID: 12297 at drivers/net/wireless/ath/ath12k/dp_rx.c:851 Call Trace: __warn+0x7b/0x1a0 ath12k_dp_rx_frags_cleanup+0xd2/0xe0 [ath12k] report_bug+0x10b/0x200 handle_bug+0x3f/0x70 exc_invalid_op+0x13/0x60 asm_exc_invalid_op+0x16/0x20 ath12k_dp_rx_frags_cleanup+0xd2/0xe0 [ath12k] ath12k_dp_rx_frags_cleanup+0xca/0xe0 [ath12k] ath12k_dp_rx_peer_tid_cleanup+0x39/0xa0 [ath12k] ath12k_mac_peer_cleanup_all+0x61/0x100 [ath12k] ath12k_core_halt+0x3b/0x100 [ath12k] ath12k_core_reset+0x494/0x4c0 [ath12k] sta object in peer will be updated when remote peer is created. Hence use peer::sta to detect the self peer and skip the cleanup. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3 Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices") Signed-off-by: Ramya Gnanasekar <quic_rgnanase@quicinc.com> --- drivers/net/wireless/ath/ath12k/mac.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)