The kbuild robot came up with the following warning: tree: .../kernel/git/linville/wireless-next.git master head: dc6be9f54a4ecb0a09765d1f515ed947d86b7528 commit: 9a1bb60250d2b6b546a62e5b73f55c4f1d22016b [5/13] brcmfmac: Adding msgbuf protocol. coccinelle warnings: drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c:1309:1-28: alloc with no test, possible model on line 1318 Looking into the issue, it turned out that the referred allocation buffer was not being released in failure path nor upon module unload. Reported-by: Fengguang Wu <fengguang.wu@xxxxxxxxx> Reviewed-by: Franky (Zhenhui) Lin <frankyl@xxxxxxxxxxxx> Reviewed-by: Daniel (Deognyoun) Kim <dekim@xxxxxxxxxxxx> Reviewed-by: Pieter-Paul Giesberts <pieterpg@xxxxxxxxxxxx> Signed-off-by: Arend van Spriel <arend@xxxxxxxxxxxx> --- drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c b/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c index 535c7eb..8f8b937 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c @@ -1318,6 +1318,8 @@ int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr) msgbuf->nrof_flowrings = if_msgbuf->nrof_flowrings; msgbuf->flowring_dma_handle = kzalloc(msgbuf->nrof_flowrings * sizeof(*msgbuf->flowring_dma_handle), GFP_ATOMIC); + if (!msgbuf->flowring_dma_handle) + goto fail; msgbuf->rx_dataoffset = if_msgbuf->rx_dataoffset; msgbuf->max_rxbufpost = if_msgbuf->max_rxbufpost; @@ -1362,6 +1364,7 @@ fail: kfree(msgbuf->flow_map); kfree(msgbuf->txstatus_done_map); brcmf_msgbuf_release_pktids(msgbuf); + kfree(msgbuf->flowring_dma_handle); if (msgbuf->ioctbuf) dma_free_coherent(drvr->bus_if->dev, BRCMF_TX_IOCTL_MAX_MSG_SIZE, @@ -1391,6 +1394,7 @@ void brcmf_proto_msgbuf_detach(struct brcmf_pub *drvr) BRCMF_TX_IOCTL_MAX_MSG_SIZE, msgbuf->ioctbuf, msgbuf->ioctbuf_handle); brcmf_msgbuf_release_pktids(msgbuf); + kfree(msgbuf->flowring_dma_handle); kfree(msgbuf); drvr->proto->pd = NULL; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
