| Message ID | 20230809042738.13394-3-quic_hprem@quicinc.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | wifi: ath12k: Ignore fragments from uninitialized peer in dp | expand |
diff --git a/drivers/net/wireless/ath/ath12k/dp_rx.c b/drivers/net/wireless/ath/ath12k/dp_rx.c index 5923c7c9eaff..ea8dfea22be6 100644 --- a/drivers/net/wireless/ath/ath12k/dp_rx.c +++ b/drivers/net/wireless/ath/ath12k/dp_rx.c @@ -3238,7 +3238,7 @@ static int ath12k_dp_rx_frag_h_mpdu(struct ath12k *ar, goto out_unlock; } - if (frag_no > __fls(rx_tid->rx_frag_bitmap)) + if ((!rx_tid->rx_frag_bitmap || frag_no > __fls(rx_tid->rx_frag_bitmap))) __skb_queue_tail(&rx_tid->rx_frags, msdu); else ath12k_dp_rx_h_sort_frags(ab, &rx_tid->rx_frags, msdu);
When max virtual ap interfaces are configured in all the bands with ACS and hostapd restart is done every 60s, a crash is observed at random times because of handling the uninitialized peer fragments. During the crash, the fragment id of that packet was 0 and __fls returned a junk value. Hence, it was identified that "__fls" would have an undefined behavior if the argument is passed as "0". Therefore, add changes to handle the same. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 Signed-off-by: Harshitha Prem <quic_hprem@quicinc.com> --- drivers/net/wireless/ath/ath12k/dp_rx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)