diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/sock.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 02199accb..3547a6f34 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -786,6 +786,15 @@ static inline __must_check int sk_add_backlog(struct sock *sk, struct sk_buff *s #endif 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; |