Doug Brown c805f215e9 appletalk: Fix skb allocation size in loopback case ... [ Upstream commit 39935dccb21c60f9bbf1bb72d22ab6fd14ae7705 ] If a DDP broadcast packet is sent out to a non-gateway target, it is also looped back. There is a potential for the loopback device to have a longer hardware header length than the original target route's device, which can result in the skb not being created with enough room for the loopback device's hardware header. This patch fixes the issue by determining that a loopback will be necessary prior to allocating the skb, and if so, ensuring the skb has enough room. This was discovered while testing a new driver that creates a LocalTalk network interface (LTALK_HLEN = 1). It caused an skb_under_panic. Signed-off-by: Doug Brown <doug@schmorgal.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-04-07 15:00:08 +02:00
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aarp.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
atalk_proc.c	appletalk: Fix atalk_proc_init() return path	2020-08-03 15:48:32 -07:00
ddp.c	appletalk: Fix skb allocation size in loopback case	2021-04-07 15:00:08 +02:00
dev.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
sysctl_net_atalk.c	appletalk: Fix use-after-free in atalk_proc_exit	2019-03-03 13:01:49 -08:00