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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-10-29 13:45:54 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-10-29 13:45:54 -0300
commita71852147516bc1cb5b0b3cbd13639bfd4022dc8 (patch)
treee1950ad489b1cc9f4404c643d94ff87ba595a8c1 /include/net/sock.h
parentbadc0e42604c4465facd81d2323e98b3b1eb9188 (diff)
Linux-libre 4.2.5-gnupck-4.2.5-gnu
Diffstat (limited to 'include/net/sock.h')
-rw-r--r--include/net/sock.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index f21f0708e..4ca4c3fe4 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -826,6 +826,14 @@ static inline __must_check int sk_add_backlog(struct sock *sk, struct sk_buff *s
if (sk_rcvqueues_full(sk, limit))
return -ENOBUFS;
+ /*
+ * If the skb was allocated from pfmemalloc reserves, only
+ * allow SOCK_MEMALLOC sockets to use it as this socket is
+ * helping free memory
+ */
+ if (skb_pfmemalloc(skb) && !sock_flag(sk, SOCK_MEMALLOC))
+ return -ENOMEM;
+
__sk_add_backlog(sk, skb);
sk->sk_backlog.len += skb->truesize;
return 0;