| Message ID | 20241014143704.31938-1-wanghai38@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [net] net: xilinx: axienet: fix potential memory leak in axienet_start_xmit() | expand |
> -----Original Message----- > From: Wang Hai <wanghai38@huawei.com> > Sent: Monday, October 14, 2024 8:07 PM > To: Pandey, Radhey Shyam <radhey.shyam.pandey@amd.com>; > davem@davemloft.net; edumazet@google.com; kuba@kernel.org; > pabeni@redhat.com; Simek, Michal <michal.simek@amd.com>; > andre.przywara@arm.com; zhangxiaoxu5@huawei.com > Cc: netdev@vger.kernel.org; linux-arm-kernel@lists.infradead.org; linux- > kernel@vger.kernel.org; wanghai38@huawei.com > Subject: [PATCH net] net: xilinx: axienet: fix potential memory leak in > axienet_start_xmit() > > The axienet_start_xmit() returns NETDEV_TX_OK without freeing skb in case of > dma_map_single() fails, add dev_kfree_skb_any() to fix it. > > Fixes: 71791dc8bdea ("net: axienet: Check for DMA mapping errors") > Signed-off-by: Wang Hai <wanghai38@huawei.com> Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com> Thanks! > --- > drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c > b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c > index ea7d7c03f48e..53cf1a927278 100644 > --- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c > +++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c > @@ -1046,6 +1046,7 @@ axienet_start_xmit(struct sk_buff *skb, struct net_device > *ndev) > if (net_ratelimit()) > netdev_err(ndev, "TX DMA mapping error\n"); > ndev->stats.tx_dropped++; > + dev_kfree_skb_any(skb); > return NETDEV_TX_OK; > } > desc_set_phys_addr(lp, phys, cur_p); > @@ -1066,6 +1067,7 @@ axienet_start_xmit(struct sk_buff *skb, struct net_device > *ndev) > ndev->stats.tx_dropped++; > axienet_free_tx_chain(lp, orig_tail_ptr, ii + 1, > true, NULL, 0); > + dev_kfree_skb_any(skb); > return NETDEV_TX_OK; > } > desc_set_phys_addr(lp, phys, cur_p); > -- > 2.17.1
Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski <kuba@kernel.org>: On Mon, 14 Oct 2024 22:37:04 +0800 you wrote: > The axienet_start_xmit() returns NETDEV_TX_OK without freeing skb > in case of dma_map_single() fails, add dev_kfree_skb_any() to fix it. > > Fixes: 71791dc8bdea ("net: axienet: Check for DMA mapping errors") > Signed-off-by: Wang Hai <wanghai38@huawei.com> > --- > drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 2 ++ > 1 file changed, 2 insertions(+) Here is the summary with links: - [net] net: xilinx: axienet: fix potential memory leak in axienet_start_xmit() https://git.kernel.org/netdev/net/c/99714e37e833 You are awesome, thank you!
diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c index ea7d7c03f48e..53cf1a927278 100644 --- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c +++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c @@ -1046,6 +1046,7 @@ axienet_start_xmit(struct sk_buff *skb, struct net_device *ndev) if (net_ratelimit()) netdev_err(ndev, "TX DMA mapping error\n"); ndev->stats.tx_dropped++; + dev_kfree_skb_any(skb); return NETDEV_TX_OK; } desc_set_phys_addr(lp, phys, cur_p); @@ -1066,6 +1067,7 @@ axienet_start_xmit(struct sk_buff *skb, struct net_device *ndev) ndev->stats.tx_dropped++; axienet_free_tx_chain(lp, orig_tail_ptr, ii + 1, true, NULL, 0); + dev_kfree_skb_any(skb); return NETDEV_TX_OK; } desc_set_phys_addr(lp, phys, cur_p);
The axienet_start_xmit() returns NETDEV_TX_OK without freeing skb in case of dma_map_single() fails, add dev_kfree_skb_any() to fix it. Fixes: 71791dc8bdea ("net: axienet: Check for DMA mapping errors") Signed-off-by: Wang Hai <wanghai38@huawei.com> --- drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 2 ++ 1 file changed, 2 insertions(+)