This patch introduces sndbuf size check before memory allocation for
send buffer.
--
Hideo Aoki
Hitachi Computer Products (America) Inc.
Signed-off-by: Satoshi Oshima <[EMAIL PROTECTED]>
Signed-off-by: Hideo Aoki <[EMAIL PROTECTED]>
ip_output.c | 5 +++++
1 file changed, 5 insertions(+)
diff -pruN linux-2.6.24-rc1/net/ipv4/ip_output.c linux-2.6.24-rc1-mem003-ipv4-dev-p1/net/ipv4/ip_output.c
--- linux-2.6.24-rc1/net/ipv4/ip_output.c 2007-10-24 11:34:34.000000000 -0400
+++ linux-2.6.24-rc1-mem003-ipv4-dev-p1/net/ipv4/ip_output.c 2007-10-24 11:46:43.000000000 -0400
@@ -1004,6 +1004,11 @@ alloc_new_skb:
frag = &skb_shinfo(skb)->frags[i];
}
} else if (i < MAX_SKB_FRAGS) {
+ if (atomic_read(&sk->sk_wmem_alloc) + PAGE_SIZE
+ > 2 * sk->sk_sndbuf) {
+ err = -ENOBUFS;
+ goto error;
+ }
if (copy > PAGE_SIZE)
copy = PAGE_SIZE;
page = alloc_pages(sk->sk_allocation, 0);
