* re: net: Microchip encx24j600 driver
@ 2015-10-06 19:00 Dan Carpenter
0 siblings, 0 replies; only message in thread
From: Dan Carpenter @ 2015-10-06 19:00 UTC (permalink / raw)
To: kernel-janitors
Hello Jon Ringle,
This is a semi-automatic email about new static checker warnings.
The patch 04fbfce7a222: "net: Microchip encx24j600 driver" from Oct
1, 2015, leads to the following Smatch complaint:
drivers/net/ethernet/microchip/encx24j600.c:313 encx24j600_tx_complete()
warn: variable dereferenced before check 'priv->tx_skb' (see line 307)
drivers/net/ethernet/microchip/encx24j600.c
306
307 dev->stats.tx_bytes += priv->tx_skb->len;
^^^^^^^^^^^^
Unchecked dereference.
308
309 encx24j600_clr_bits(priv, EIR, TXIF | TXABTIF);
310
311 netif_dbg(priv, tx_done, dev, "TX Done%s\n", err ? ": Err" : "");
312
313 if (priv->tx_skb) {
^^^^^^^^^^^^
Too late.
314 dev_kfree_skb(priv->tx_skb);
315 priv->tx_skb = NULL;
regards,
dan carpenter
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