* [PATCH net-next] erspan: Check IFLA_GRE_ERSPAN_VER is set.
@ 2020-05-12 17:36 William Tu
2020-05-12 18:50 ` Eric Dumazet
2020-05-12 20:11 ` David Miller
0 siblings, 2 replies; 3+ messages in thread
From: William Tu @ 2020-05-12 17:36 UTC (permalink / raw)
To: netdev; +Cc: Eric Dumazet
Add a check to make sure the IFLA_GRE_ERSPAN_VER is provided by users.
Fixes: f989d546a2d5 ("erspan: Add type I version 0 support.")
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: William Tu <u9012063@gmail.com>
---
net/ipv4/ip_gre.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index e29cd48674d7..0ce9b91ff55c 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -1087,7 +1087,8 @@ static int erspan_validate(struct nlattr *tb[], struct nlattr *data[],
if (ret)
return ret;
- if (nla_get_u8(data[IFLA_GRE_ERSPAN_VER]) == 0)
+ if (data[IFLA_GRE_ERSPAN_VER] &&
+ nla_get_u8(data[IFLA_GRE_ERSPAN_VER]) == 0)
return 0;
/* ERSPAN type II/III should only have GRE sequence and key flag */
--
2.7.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-05-12 20:11 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-05-12 17:36 [PATCH net-next] erspan: Check IFLA_GRE_ERSPAN_VER is set William Tu
2020-05-12 18:50 ` Eric Dumazet
2020-05-12 20:11 ` David Miller
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.