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Date: Sun, 16 Sep 2018 15:34:27 -0700 (PDT) From: David Miller <davem@...emloft.net> To: yanhaishuang@...s.chinamobile.com Cc: kuznet@....inr.ac.ru, jbenc@...hat.com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v3,net-next 1/2] ip_gre: fix parsing gre header in ipgre_err From: Haishuang Yan <yanhaishuang@...s.chinamobile.com> Date: Fri, 14 Sep 2018 12:26:47 +0800 > gre_parse_header stops parsing when csum_err is encountered, which means > tpi->key is undefined and ip_tunnel_lookup will return NULL improperly. > > This patch introduce a NULL pointer as csum_err parameter. Even when > csum_err is encountered, it won't return error and continue parsing gre > header as expected. > > Fixes: 9f57c67c379d ("gre: Remove support for sharing GRE protocol hook.") > Reported-by: Jiri Benc <jbenc@...hat.com> > Signed-off-by: Haishuang Yan <yanhaishuang@...s.chinamobile.com> > > --- > Changes since v3: > * skb_checksum_simple_validate need to be performed in csum_err case. Applied.
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