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authorWANG Cong <xiyou.wangcong@gmail.com>2017-06-22 15:29:33 -0700
committerDavid S. Miller <davem@davemloft.net>2017-06-23 14:08:40 -0400
commit0ccc22f425e56c4ede9c66f1945846de8ac1f352 (patch)
tree096fe914e9a99b0bf3feefae7825a20a02f9b6ef /net/ipv6/sit.c
parenta5cb659bbc1c8644efa0c3138a757a1e432a4880 (diff)
downloadlinux-stericsson-0ccc22f425e56c4ede9c66f1945846de8ac1f352.tar.gz
sit: use __GFP_NOWARN for user controlled allocation
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 <andreyknvl@google.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/sit.c')
-rw-r--r--net/ipv6/sit.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 2378503577b0..f8ad15891cd7 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();