diff options
| author | Peter S. Housel <housel@acm.org> | 2017-06-12 13:46:22 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2017-06-13 09:59:45 +0300 |
| commit | 5ea59db8a375216e6c915c5586f556766673b5a7 (patch) | |
| tree | 5d03ccb31b8ffa51c30cae91640597d9044b2265 /drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | |
| parent | a9507d5cfd5225cb6ee68e8de0cf7ffd0d49cdda (diff) | |
| download | linux-5ea59db8a375216e6c915c5586f556766673b5a7.tar.xz | |
brcmfmac: Fix glom_skb leak in brcmf_sdiod_recv_chain
An earlier change to this function (3bdae810721b) fixed a leak in the
case of an unsuccessful call to brcmf_sdiod_buffrw(). However, the
glom_skb buffer, used for emulating a scattering read, is never used
or referenced after its contents are copied into the destination
buffers, and therefore always needs to be freed by the end of the
function.
Fixes: 3bdae810721b ("brcmfmac: Fix glob_skb leak in brcmf_sdiod_recv_chain")
Fixes: a413e39a38573 ("brcmfmac: fix brcmf_sdcard_recv_chain() for host without sg support")
Cc: stable@vger.kernel.org # 4.9.x-
Signed-off-by: Peter S. Housel <housel@acm.org>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c')
| -rw-r--r-- | drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c index 9b970dc2b922..844c1e68ec03 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c @@ -706,7 +706,7 @@ done: int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev, struct sk_buff_head *pktq, uint totlen) { - struct sk_buff *glom_skb; + struct sk_buff *glom_skb = NULL; struct sk_buff *skb; u32 addr = sdiodev->sbwad; int err = 0; @@ -727,10 +727,8 @@ int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev, return -ENOMEM; err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, glom_skb); - if (err) { - brcmu_pkt_buf_free_skb(glom_skb); + if (err) goto done; - } skb_queue_walk(pktq, skb) { memcpy(skb->data, glom_skb->data, skb->len); @@ -741,6 +739,7 @@ int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev, pktq); done: + brcmu_pkt_buf_free_skb(glom_skb); return err; } |