[dpdk-dev] [PATCH] net/bnxt: fix memory leak when mapping failure

[dpdk-dev] [PATCH] net/bnxt: fix memory leak when mapping failure

[wangyunjian]

From: Yunjian Wang <wangyunjian@huawei.com>

We allocated memory for the 'buf' when sending message to HWRM,
but we don't free it when mapping the address to IO address
fails. It will lead to memory leak.

Fixes: 19e6af01bb36 ("net/bnxt: support get/set EEPROM")
Cc: stable@dpdk.org

Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
---
 drivers/net/bnxt/bnxt_hwrm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index 24c33185b4..ebbf504c0c 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -4320,6 +4320,7 @@ int bnxt_get_nvram_directory(struct bnxt *bp, uint32_t len, uint8_t *data)
 		return -ENOMEM;
 	dma_handle = rte_malloc_virt2iova(buf);
 	if (dma_handle == RTE_BAD_IOVA) {
+		rte_free(buf);
 		PMD_DRV_LOG(ERR,
 			"unable to map response address to physical memory\n");
 		return -ENOMEM;
@@ -4354,6 +4355,7 @@ int bnxt_hwrm_get_nvram_item(struct bnxt *bp, uint32_t index,
 
 	dma_handle = rte_malloc_virt2iova(buf);
 	if (dma_handle == RTE_BAD_IOVA) {
+		rte_free(buf);
 		PMD_DRV_LOG(ERR,
 			"unable to map response address to physical memory\n");
 		return -ENOMEM;
@@ -4407,6 +4409,7 @@ int bnxt_hwrm_flash_nvram(struct bnxt *bp, uint16_t dir_type,
 
 	dma_handle = rte_malloc_virt2iova(buf);
 	if (dma_handle == RTE_BAD_IOVA) {
+		rte_free(buf);
 		PMD_DRV_LOG(ERR,
 			"unable to map response address to physical memory\n");
 		return -ENOMEM;
-- 
2.18.1

Re: [dpdk-dev] [PATCH] net/bnxt: fix memory leak when mapping failure

[Ajit Khaparde]

On Mon, Nov 30, 2020 at 5:00 PM wangyunjian <wangyunjian@huawei.com> wrote:
>
> From: Yunjian Wang <wangyunjian@huawei.com>
>
> We allocated memory for the 'buf' when sending message to HWRM,
> but we don't free it when mapping the address to IO address
> fails. It will lead to memory leak.
>
> Fixes: 19e6af01bb36 ("net/bnxt: support get/set EEPROM")
> Cc: stable@dpdk.org
>
> Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Patch applied to dpdk-next-net-brcm. Thanks

> ---
>  drivers/net/bnxt/bnxt_hwrm.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
> index 24c33185b4..ebbf504c0c 100644
> --- a/drivers/net/bnxt/bnxt_hwrm.c
> +++ b/drivers/net/bnxt/bnxt_hwrm.c
> @@ -4320,6 +4320,7 @@ int bnxt_get_nvram_directory(struct bnxt *bp, uint32_t len, uint8_t *data)
>                 return -ENOMEM;
>         dma_handle = rte_malloc_virt2iova(buf);
>         if (dma_handle == RTE_BAD_IOVA) {
> +               rte_free(buf);
>                 PMD_DRV_LOG(ERR,
>                         "unable to map response address to physical memory\n");
>                 return -ENOMEM;
> @@ -4354,6 +4355,7 @@ int bnxt_hwrm_get_nvram_item(struct bnxt *bp, uint32_t index,
>
>         dma_handle = rte_malloc_virt2iova(buf);
>         if (dma_handle == RTE_BAD_IOVA) {
> +               rte_free(buf);
>                 PMD_DRV_LOG(ERR,
>                         "unable to map response address to physical memory\n");
>                 return -ENOMEM;
> @@ -4407,6 +4409,7 @@ int bnxt_hwrm_flash_nvram(struct bnxt *bp, uint16_t dir_type,
>
>         dma_handle = rte_malloc_virt2iova(buf);
>         if (dma_handle == RTE_BAD_IOVA) {
> +               rte_free(buf);
>                 PMD_DRV_LOG(ERR,
>                         "unable to map response address to physical memory\n");
>                 return -ENOMEM;
> --
> 2.18.1
>

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