The memory allocation size is controlled by user-space,
if it is too large just fail silently and return NULL,
not to mention there is a fallback allocation later.
Reported-by: Andrey Konovalov <andreyk...@google.com>
Cc: Andrey Konovalov <andreyk...@google.com>
Signed-off-by: Cong Wang <xiyou.wangc...@gmail.com>
---
net/ipv6/sit.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 2378503..f8ad158 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -305,7 +305,7 @@ static int ipip6_tunnel_get_prl(struct ip_tunnel *t,
* we try harder to allocate.
*/
kp = (cmax <= 1 || capable(CAP_NET_ADMIN)) ?
- kcalloc(cmax, sizeof(*kp), GFP_KERNEL) :
+ kcalloc(cmax, sizeof(*kp), GFP_KERNEL | __GFP_NOWARN) :
NULL;
rcu_read_lock();
--
2.5.5
