5.4-stable review patch. If anyone has any objections, please let me know.
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From: Martin Kaistra martin.kaistra@linutronix.de
[ Upstream commit d76a1abcf57734d2bcd4a7ec051617edd4513d7f ]
Commit 1e5b3b3fe9e0 ("rtl8xxxu: Adjust RX skb size to include space for phystats") increased the skb size when aggregation is enabled but decreased it for the aggregation disabled case.
As a result, if a frame near the maximum size is received, rtl8xxxu_rx_complete() is called with status -EOVERFLOW and then the driver starts to malfunction and no further communication is possible.
Restore the skb size in the aggregation disabled case.
Fixes: 1e5b3b3fe9e0 ("rtl8xxxu: Adjust RX skb size to include space for phystats") Signed-off-by: Martin Kaistra martin.kaistra@linutronix.de Reviewed-by: Ping-Ke Shih pkshih@realtek.com Signed-off-by: Ping-Ke Shih pkshih@realtek.com Link: https://patch.msgid.link/20250709121522.1992366-1-martin.kaistra@linutronix.... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c index 5611f00ef0bd..81d1c544313f 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c @@ -5387,7 +5387,7 @@ static int rtl8xxxu_submit_rx_urb(struct rtl8xxxu_priv *priv, skb_size = fops->rx_agg_buf_size; skb_size += (rx_desc_sz + sizeof(struct rtl8723au_phy_stats)); } else { - skb_size = IEEE80211_MAX_FRAME_LEN; + skb_size = IEEE80211_MAX_FRAME_LEN + rx_desc_sz; }
skb = __netdev_alloc_skb(NULL, skb_size, GFP_KERNEL);