From: Dan Carpenter <dan.carpenter@oracle.com>
To: Colin King <colin.king@canonical.com>
Cc: 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,
kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] brcmfmac: fix leak of mypkt on error return path
Date: Tue, 9 Apr 2019 14:32:45 +0300 [thread overview]
Message-ID: <20190409113245.GB6095@kadam> (raw)
In-Reply-To: <20190409112011.19546-1-colin.king@canonical.com>
On Tue, Apr 09, 2019 at 12:20:11PM +0100, Colin King wrote:
> 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.
>
> Addresses-Coverity: ("Resource Leak")
> Fixes: a7c3aa1509e2 ("brcmfmac: Remove brcmf_sdiod_addrprep()")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
> drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
> index ec129864cc9c..f3d11e024e71 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
> @@ -628,7 +628,7 @@ 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;
> @@ -636,7 +636,7 @@ int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
> if (!err)
^^^^
This is not required, btw.
> err = brcmf_sdiod_skbuff_write(sdiodev, sdiodev->func2, addr,
> mypkt);
> -
> +out:
> brcmu_pkt_buf_free_skb(mypkt);
regards,
dan carpenter
next prev parent reply other threads:[~2019-04-09 11:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-09 11:20 [PATCH] brcmfmac: fix leak of mypkt on error return path Colin King
2019-04-09 11:32 ` Dan Carpenter [this message]
2019-04-09 11:35 ` Colin Ian King
2019-04-09 11:40 ` Arend Van Spriel
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