diff options
| author | Peter S. Housel <housel@acm.org> | 2017-06-12 11:46:22 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-21 07:42:19 +0200 |
| commit | 5f69bb1d18c503a24a576509826f82aabca0a4bd (patch) | |
| tree | ac2876f4c6f0f54163c24d0553101168b6779696 /drivers/net/wireless | |
| parent | fd325ddd58843dd518e2cd09994ef4691a1f4b5c (diff) | |
brcmfmac: Fix glom_skb leak in brcmf_sdiod_recv_chain
commit 5ea59db8a375216e6c915c5586f556766673b5a7 upstream.
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")
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/wireless')
| -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 72139b579b18..746f8c9a891d 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c @@ -705,7 +705,7 @@ 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; @@ -726,10 +726,8 @@ 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); @@ -740,6 +738,7 @@ int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev, pktq); done: + brcmu_pkt_buf_free_skb(glom_skb); return err; } |