sh_eth: fix NULL pointer dereference in sh_eth_ring_format()

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[ Upstream commit c1b7fca650 ]

In a low memory situation, if netdev_alloc_skb() fails on a first RX ring
loop iteration  in sh_eth_ring_format(), 'rxdesc' is still NULL.  Avoid
kernel oops by adding the 'rxdesc' check after the loop.

Reported-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

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Sergei Shtylyov 2016-03-08 01:36:28 +03:00 • committed by Sasha Levin

parent 355b7d7b06

commit 2ccbc42cc2

1 changed files with 2 additions and 1 deletions

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drivers/net/ethernet/renesas/sh_eth.c

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