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Re: [TIP] BUG kmalloc-4096: Poison overwritten (ath5k_rx_skb_alloc)

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On 26.2.2009 02:06, Bob Copeland wrote:
--- a/drivers/net/wireless/ath5k/base.c
+++ b/drivers/net/wireless/ath5k/base.c
@@ -1140,12 +1140,14 @@ ath5k_rxbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf)
  	struct ath5k_hw *ah = sc->ah;
  	struct sk_buff *skb = bf->skb;
  	struct ath5k_desc *ds;
+	dma_addr_t dma_addr;

  	if (!skb) {
-		skb = ath5k_rx_skb_alloc(sc,&bf->skbaddr);
+		skb = ath5k_rx_skb_alloc(sc,&dma_addr);
  		if (!skb)
  			return -ENOMEM;
  		bf->skb = skb;
+		bf->skbaddr = dma_addr;

Hmm, rather than the caller, ath5k_rx_skb_alloc is wrong here in my eyes. It shouldn't touch the second parameter unless it knows it won't fail anymore.
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