linux-kernel - [PATCH AUTOSEL 5.7 156/274] ath10k: fix possible memory leak in ath10k_bmi_lz_data

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Message-Id: <20200608230607.3361041-156-sashal@kernel.org>
Date:   Mon,  8 Jun 2020 19:04:09 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Wei Yongjun <weiyongjun1@...wei.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        Sasha Levin <sashal@...nel.org>, ath10k@...ts.infradead.org,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH AUTOSEL 5.7 156/274] ath10k: fix possible memory leak in ath10k_bmi_lz_data_large()

From: Wei Yongjun <weiyongjun1@...wei.com>

[ Upstream commit 2326aa011967f0afbcba7fe1a005d01f8b12900b ]

'cmd' is malloced in ath10k_bmi_lz_data_large() and should be freed
before leaving from the error handling cases, otherwise it will cause
memory leak.

Fixes: d58f466a5dee ("ath10k: add large size for BMI download data for SDIO")
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
Link: https://lore.kernel.org/r/20200427104348.13570-1-weiyongjun1@huawei.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/ath/ath10k/bmi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/ath/ath10k/bmi.c b/drivers/net/wireless/ath/ath10k/bmi.c
index ea908107581d..5b6db6e66f65 100644
--- a/drivers/net/wireless/ath/ath10k/bmi.c
+++ b/drivers/net/wireless/ath/ath10k/bmi.c
@@ -380,6 +380,7 @@ static int ath10k_bmi_lz_data_large(struct ath10k *ar, const void *buffer, u32 l
 						  NULL, NULL);
 		if (ret) {
 			ath10k_warn(ar, "unable to write to the device\n");
+			kfree(cmd);
 			return ret;
 		}
 
-- 
2.25.1