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