From 260e629bbf441585860e21d5e10d2e88437f47c8 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Sun, 27 May 2018 22:17:02 +0100 Subject: [PATCH] ath10k: fix memory leak of tpc_stats Currently tpc_stats is allocated and is leaked on the return path if num_tx_chain is greater than WMI_TPC_TX_N_CHAIN. Avoid this leak by performing the check on num_tx_chain before the allocation of tpc_stats. Detected by CoverityScan, CID#1469422 ("Resource Leak") Fixes: 4b190675ad06 ("ath10k: fix kernel panic while reading tpc_stats") Signed-off-by: Colin Ian King Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/wmi.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- a/drivers/net/wireless/ath/ath10k/wmi.c +++ b/drivers/net/wireless/ath/ath10k/wmi.c @@ -4557,10 +4557,6 @@ void ath10k_wmi_event_pdev_tpc_config(st ev = (struct wmi_pdev_tpc_config_event *)skb->data; - tpc_stats = kzalloc(sizeof(*tpc_stats), GFP_ATOMIC); - if (!tpc_stats) - return; - num_tx_chain = __le32_to_cpu(ev->num_tx_chain); if (num_tx_chain > WMI_TPC_TX_N_CHAIN) { @@ -4569,6 +4565,10 @@ void ath10k_wmi_event_pdev_tpc_config(st return; } + tpc_stats = kzalloc(sizeof(*tpc_stats), GFP_ATOMIC); + if (!tpc_stats) + return; + ath10k_wmi_tpc_config_get_rate_code(rate_code, pream_table, num_tx_chain);