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wifi: rtlwifi: fix possible skb memory leak in _rtl_pci_init_one_rxdesc()

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[ 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>
This commit is contained in:
Thomas Fourier
2025-06-13 09:38:36 +02:00
committed by Greg Kroah-Hartman
parent 2d1a8784d5
commit 16f9fe3574
1 changed files with 4 additions and 1 deletions
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5
drivers/net/wireless/realtek/rtlwifi/pci.c
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@@ -573,8 +573,11 @@ remap:
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 */