* [PATCH] wifi: rtl8xxxu: Fix skb misuse in TX queue selection
@ 2022-08-13 19:54 Bitterblue Smith
2022-08-31 15:11 ` Kalle Valo
0 siblings, 1 reply; 2+ messages in thread
From: Bitterblue Smith @ 2022-08-13 19:54 UTC (permalink / raw)
To: linux-wireless; +Cc: Jes.Sorensen
rtl8xxxu_queue_select() selects the wrong TX queues because it's
reading memory from the wrong address. It expects to find ieee80211_hdr
at skb->data, but that's not the case after skb_push(). Move the call
to rtl8xxxu_queue_select() before the call to skb_push().
Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
---
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
index 52240e945b58..8d6f693bf60b 100644
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
@@ -5177,6 +5177,8 @@ static void rtl8xxxu_tx(struct ieee80211_hw *hw,
if (control && control->sta)
sta = control->sta;
+ queue = rtl8xxxu_queue_select(hw, skb);
+
tx_desc = skb_push(skb, tx_desc_size);
memset(tx_desc, 0, tx_desc_size);
@@ -5189,7 +5191,6 @@ static void rtl8xxxu_tx(struct ieee80211_hw *hw,
is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
tx_desc->txdw0 |= TXDESC_BROADMULTICAST;
- queue = rtl8xxxu_queue_select(hw, skb);
tx_desc->txdw1 = cpu_to_le32(queue << TXDESC_QUEUE_SHIFT);
if (tx_info->control.hw_key) {
--
2.36.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] wifi: rtl8xxxu: Fix skb misuse in TX queue selection
2022-08-13 19:54 [PATCH] wifi: rtl8xxxu: Fix skb misuse in TX queue selection Bitterblue Smith
@ 2022-08-31 15:11 ` Kalle Valo
0 siblings, 0 replies; 2+ messages in thread
From: Kalle Valo @ 2022-08-31 15:11 UTC (permalink / raw)
To: Bitterblue Smith; +Cc: linux-wireless, Jes.Sorensen
Bitterblue Smith <rtl8821cerfe2@gmail.com> writes:
> rtl8xxxu_queue_select() selects the wrong TX queues because it's
> reading memory from the wrong address. It expects to find ieee80211_hdr
> at skb->data, but that's not the case after skb_push(). Move the call
> to rtl8xxxu_queue_select() before the call to skb_push().
>
> Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
A Fixes tag would be nice.
--
https://patchwork.kernel.org/project/linux-wireless/list/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-08-13 19:54 [PATCH] wifi: rtl8xxxu: Fix skb misuse in TX queue selection Bitterblue Smith
2022-08-31 15:11 ` Kalle Valo
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