From: Colin King <colin.king@canonical.com>
To: Arend van Spriel <arend.vanspriel@broadcom.com>,
Franky Lin <franky.lin@broadcom.com>,
Hante Meuleman <hante.meuleman@broadcom.com>,
Chi-Hsien Lin <chi-hsien.lin@cypress.com>,
Wright Feng <wright.feng@cypress.com>,
Kalle Valo <kvalo@codeaurora.org>,
"David S . Miller" <davem@davemloft.net>,
linux-wireless@vger.kernel.org,
brcm80211-dev-list.pdl@broadcom.com,
brcm80211-dev-list@cypress.com, netdev@vger.kernel.org
Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH][V2] brcmfmac: fix leak of mypkt on error return path
Date: Tue, 9 Apr 2019 12:43:33 +0100 [thread overview]
Message-ID: <20190409114333.24342-1-colin.king@canonical.com> (raw)
From: Colin Ian King <colin.king@canonical.com>
Currently if the call to brcmf_sdiod_set_backplane_window fails then
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>
---
V2: Remove redundant check on err before calling
brcmf_sdiod_skbuff_write, kudos to Dan Carpenter and Arend Van Spriel
for spotting this.
---
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 ec129864cc9c..60aede5abb4d 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
@@ -628,15 +628,13 @@ 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
next reply other threads:[~2019-04-09 11:43 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-09 11:43 Colin King [this message]
2019-04-09 11:50 ` [PATCH][V2] brcmfmac: fix leak of mypkt on error return path Arend Van Spriel
2019-04-09 11:55 ` Dan Carpenter
2019-04-10 9:17 ` Sergei Shtylyov
2019-04-10 9:32 ` Mukesh Ojha
2019-04-13 11:08 ` Kalle Valo
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