5.10-stable review patch. If anyone has any objections, please let me know.
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From: Thomas Fourier fourier.thomas@gmail.com
[ Upstream commit 76b3e5078d76f0eeadb7aacf9845399f8473da0d ]
When `dma_mapping_error()` is true, if a new `skb` has been allocated, then it must be de-allocated.
Compile tested only
Signed-off-by: Thomas Fourier fourier.thomas@gmail.com Signed-off-by: Ping-Ke Shih pkshih@realtek.com Link: https://patch.msgid.link/20250613074014.69856-2-fourier.thomas@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/realtek/rtlwifi/pci.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/realtek/rtlwifi/pci.c b/drivers/net/wireless/realtek/rtlwifi/pci.c index bccb959d8210..02821588673e 100644 --- a/drivers/net/wireless/realtek/rtlwifi/pci.c +++ b/drivers/net/wireless/realtek/rtlwifi/pci.c @@ -573,8 +573,11 @@ static int _rtl_pci_init_one_rxdesc(struct ieee80211_hw *hw, dma_map_single(&rtlpci->pdev->dev, skb_tail_pointer(skb), rtlpci->rxbuffersize, DMA_FROM_DEVICE); bufferaddress = *((dma_addr_t *)skb->cb); - if (dma_mapping_error(&rtlpci->pdev->dev, bufferaddress)) + if (dma_mapping_error(&rtlpci->pdev->dev, bufferaddress)) { + if (!new_skb) + kfree_skb(skb); return 0; + } rtlpci->rx_ring[rxring_idx].rx_buf[desc_idx] = skb; if (rtlpriv->use_new_trx_flow) { /* skb->cb may be 64 bit address */