net: lantiq_xrx200: confirm skb is allocated before using

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[ Upstream commit c8b043702d ]

xrx200_hw_receive() assumes build_skb() always works and goes straight
to skb_reserve(). However, build_skb() can fail under memory pressure.

Add a check in case build_skb() failed to allocate and return NULL.

Fixes: e015593573 ("net: lantiq_xrx200: convert to build_skb")
Reported-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Aleksander Jan Bajkowski 2022-08-24 23:54:06 +02:00 • committed by Greg Kroah-Hartman

parent 27a5ab8fec

commit 73f4758652

1 changed files with 6 additions and 0 deletions

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drivers/net/ethernet/lantiq_xrx200.c

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