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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Colin Ian King <colin.king@canonical.com>,
	Mukesh Ojha <mojha@codeaurora.org>,
	Kalle Valo <kvalo@codeaurora.org>,
	Sasha Levin <sashal@kernel.org>,
	linux-wireless@vger.kernel.org,
	brcm80211-dev-list.pdl@broadcom.com,
	brcm80211-dev-list@cypress.com, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 4.19 290/671] brcmfmac: fix leak of mypkt on error return path
Date: Thu, 16 Jan 2020 11:58:48 -0500
Message-ID: <20200116170509.12787-27-sashal@kernel.org> (raw)
In-Reply-To: <20200116170509.12787-1-sashal@kernel.org>

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit a927e8d8ab57e696800e20cf09a72b7dfe3bbebb ]

Currently if the call to brcmf_sdiod_set_backplane_window fails then
error return path leaks mypkt. Fix this by returning by a new
error path labelled 'out' that calls brcmu_pkt_buf_free_skb to free
mypkt.  Also remove redundant check on err before calling
brcmf_sdiod_skbuff_write.

Addresses-Coverity: ("Resource Leak")
Fixes: a7c3aa1509e2 ("brcmfmac: Remove brcmf_sdiod_addrprep()")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
index d2f788d88668..710dc59c5d34 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
@@ -617,15 +617,13 @@ int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
 
 	err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
 	if (err)
-		return err;
+		goto out;
 
 	addr &= SBSDIO_SB_OFT_ADDR_MASK;
 	addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
 
-	if (!err)
-		err = brcmf_sdiod_skbuff_write(sdiodev, sdiodev->func2, addr,
-					       mypkt);
-
+	err = brcmf_sdiod_skbuff_write(sdiodev, sdiodev->func2, addr, mypkt);
+out:
 	brcmu_pkt_buf_free_skb(mypkt);
 
 	return err;
-- 
2.20.1


       reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200116170509.12787-1-sashal@kernel.org>
2020-01-16 16:58 ` Sasha Levin [this message]
2020-01-16 16:59 ` [PATCH AUTOSEL 4.19 338/671] ath10k: Fix encoding for protected management frames Sasha Levin
2020-01-16 17:01 ` [PATCH AUTOSEL 4.19 468/671] libertas_tf: Use correct channel range in lbtf_geo_init Sasha Levin
2020-01-16 17:02 ` [PATCH AUTOSEL 4.19 503/671] mac80211: minstrel_ht: fix per-group max throughput rate initialization Sasha Levin
2020-01-16 17:02 ` [PATCH AUTOSEL 4.19 520/671] bcma: fix incorrect update of BCMA_CORE_PCI_MDIO_DATA Sasha Levin
2020-01-16 17:02 ` [PATCH AUTOSEL 4.19 525/671] ath9k: dynack: fix possible deadlock in ath_dynack_node_{de}init Sasha Levin
2020-01-16 17:02 ` [PATCH AUTOSEL 4.19 526/671] wcn36xx: use dynamic allocation for large variables Sasha Levin
2020-01-16 17:02 ` [PATCH AUTOSEL 4.19 534/671] rtlwifi: Fix file release memory leak Sasha Levin
2020-01-16 17:03 ` [PATCH AUTOSEL 4.19 548/671] ath10k: adjust skb length in ath10k_sdio_mbox_rx_packet Sasha Levin
2020-01-16 17:03 ` [PATCH AUTOSEL 4.19 578/671] mac80211: accept deauth frames in IBSS mode Sasha Levin
2020-01-16 17:03 ` [PATCH AUTOSEL 4.19 582/671] iwlwifi: pcie: fix memory leaks in iwl_pcie_ctxt_info_gen3_init Sasha Levin
2020-01-16 17:04 ` [PATCH AUTOSEL 4.19 611/671] mt7601u: fix bbp version check in mt7601u_wait_bbp_ready Sasha Levin
2020-01-16 17:04 ` [PATCH AUTOSEL 4.19 616/671] cw1200: Fix a signedness bug in cw1200_load_firmware() Sasha Levin
2020-01-16 17:04 ` [PATCH AUTOSEL 4.19 625/671] rtlwifi: Remove unnecessary NULL check in rtl_regd_init Sasha Levin

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