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28 lines
999 B
Diff
28 lines
999 B
Diff
From c9c3b1775f80fa21f5bff874027d2ccb10f5d90c Mon Sep 17 00:00:00 2001
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From: Aleksander Jan Bajkowski <olek2@wp.pl>
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Date: Wed, 24 Aug 2022 23:54:08 +0200
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Subject: [PATCH] net: lantiq_xrx200: restore buffer if memory allocation
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failed
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In a situation where memory allocation fails, an invalid buffer address
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is stored. When this descriptor is used again, the system panics in the
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build_skb() function when accessing memory.
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Fixes: 7ea6cd16f159 ("lantiq: net: fix duplicated skb in rx descriptor ring")
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Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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drivers/net/ethernet/lantiq_xrx200.c | 1 +
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1 file changed, 1 insertion(+)
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--- a/drivers/net/ethernet/lantiq_xrx200.c
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+++ b/drivers/net/ethernet/lantiq_xrx200.c
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@@ -193,6 +193,7 @@ static int xrx200_alloc_buf(struct xrx20
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ch->rx_buff[ch->dma.desc] = alloc(priv->rx_skb_size);
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if (!ch->rx_buff[ch->dma.desc]) {
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+ ch->rx_buff[ch->dma.desc] = buf;
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ret = -ENOMEM;
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goto skip;
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}
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