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

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 <redacted>
---
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

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 <redacted>
---
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>

Miaoqian Lin [off-list ref] 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 <redacted>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Kalle Valo <redacted>

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