Commit c9c3b177 authored by Aleksander Jan Bajkowski's avatar Aleksander Jan Bajkowski Committed by Jakub Kicinski
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net: lantiq_xrx200: restore buffer if memory allocation failed 



In a situation where memory allocation fails, an invalid buffer address
is stored. When this descriptor is used again, the system panics in the
build_skb() function when accessing memory.

Fixes: 7ea6cd16 ("lantiq: net: fix duplicated skb in rx descriptor ring")
Signed-off-by: default avatarAleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent c4b6e934

drivers/net/ethernet/lantiq_xrx200.c

+1 −0
Original line number Diff line number Diff line
@@ -193,6 +193,7 @@ static int xrx200_alloc_buf(struct xrx200_chan *ch, void *(*alloc)(unsigned int 


	ch->rx_buff[ch->dma.desc] = alloc(priv->rx_skb_size);

	if (!ch->rx_buff[ch->dma.desc]) {

		ch->rx_buff[ch->dma.desc] = buf;

		ret = -ENOMEM;

		goto skip;

	}