From: Zhang Changzhong <zhangchangzhong@huawei.com>
To: Arend van Spriel <aspriel@gmail.com>,
Franky Lin <franky.lin@broadcom.com>,
Hante Meuleman <hante.meuleman@broadcom.com>,
Kalle Valo <kvalo@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Cc: Zhang Changzhong <zhangchangzhong@huawei.com>,
<linux-wireless@vger.kernel.org>,
<brcm80211-dev-list.pdl@broadcom.com>,
<SHA-cyfmac-dev-list@infineon.com>, <netdev@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH wireless v2] brcmfmac: fix potential memory leak in brcmf_netdev_start_xmit()
Date: Thu, 17 Nov 2022 19:33:01 +0800 [thread overview]
Message-ID: <1668684782-47422-1-git-send-email-zhangchangzhong@huawei.com> (raw)
The brcmf_netdev_start_xmit() returns NETDEV_TX_OK without freeing skb
in case of pskb_expand_head() fails, add dev_kfree_skb() to fix it.
Compile tested only.
Fixes: 270a6c1f65fe ("brcmfmac: rework headroom check in .start_xmit()")
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
---
v1->v2: add "Compile tested only" to commit log
drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
index 595ae3a..175272c 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -335,6 +335,7 @@ static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
bphy_err(drvr, "%s: failed to expand headroom\n",
brcmf_ifname(ifp));
atomic_inc(&drvr->bus_if->stats.pktcow_failed);
+ dev_kfree_skb(skb);
goto done;
}
}
--
2.9.5
next reply other threads:[~2022-11-17 11:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-17 11:33 Zhang Changzhong [this message]
2022-12-01 11:09 ` [PATCH wireless v2] brcmfmac: fix potential memory leak in brcmf_netdev_start_xmit() Arend van Spriel
2022-12-22 16:07 ` [wireless,v2] wifi: " Kalle Valo
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