[PATCH v2] wifi: ath11k: Fix memory leak in ath11k_peer_rx_frag_setup

[PATCH v2] wifi: ath11k: Fix memory leak in ath11k_peer_rx_frag_setup

[Miaoqian Lin]

crypto_alloc_shash() allocates resources, which should be released by
crypto_free_shash(). When ath11k_peer_find() fails, there has memory
leak. Add missing crypto_free_shash() to fix this.

Fixes: 243874c64c81 ("ath11k: handle RX fragments")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
change in v2:
- add crypto_free_shash() in the error path instead of move
crypto_alloc_shash().
---
 drivers/net/wireless/ath/ath11k/dp_rx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/ath/ath11k/dp_rx.c b/drivers/net/wireless/ath/ath11k/dp_rx.c
index c5a4c34d7749..0c53d88293eb 100644
--- a/drivers/net/wireless/ath/ath11k/dp_rx.c
+++ b/drivers/net/wireless/ath/ath11k/dp_rx.c
@@ -3126,6 +3126,7 @@ int ath11k_peer_rx_frag_setup(struct ath11k *ar, const u8 *peer_mac, int vdev_id
 	if (!peer) {
 		ath11k_warn(ab, "failed to find the peer to set up fragment info\n");
 		spin_unlock_bh(&ab->base_lock);
+		crypto_free_shash(tfm);
 		return -ENOENT;
 	}
 
-- 
2.25.1

Re: [PATCH v2] wifi: ath11k: Fix memory leak in ath11k_peer_rx_frag_setup

[Leon Romanovsky]

On Mon, Jan 02, 2023 at 12:11:42PM +0400, Miaoqian Lin wrote:
> crypto_alloc_shash() allocates resources, which should be released by
> crypto_free_shash(). When ath11k_peer_find() fails, there has memory
> leak. Add missing crypto_free_shash() to fix this.
> 
> Fixes: 243874c64c81 ("ath11k: handle RX fragments")
> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
> ---
> change in v2:
> - add crypto_free_shash() in the error path instead of move
> crypto_alloc_shash().
> ---
>  drivers/net/wireless/ath/ath11k/dp_rx.c | 1 +
>  1 file changed, 1 insertion(+)
> 

Thanks,
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>

Re: [PATCH v2] wifi: ath11k: Fix memory leak in ath11k_peer_rx_frag_setup

[Kalle Valo]

Miaoqian Lin <linmq006@gmail.com> wrote:

> crypto_alloc_shash() allocates resources, which should be released by
> crypto_free_shash(). When ath11k_peer_find() fails, there has memory
> leak. Add missing crypto_free_shash() to fix this.
> 
> Fixes: 243874c64c81 ("ath11k: handle RX fragments")
> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
> Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>

Patch applied to ath-next branch of ath.git, thanks.

ed3f83b3459a wifi: ath11k: Fix memory leak in ath11k_peer_rx_frag_setup

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20230102081142.3937570-1-linmq006@gmail.com/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches