Ollie Wild wrote:
If the ip_append_data() call in icmp_push_reply() fails,
ip_flush_pending_frames() needs to be called. Otherwise, ip_rt_put() is
never called on inet_sk(icmp_socket->sk)->cork.rt, which prevents the
route (and net_device) from ever being freed.
I've attached a patch which fixes the problem.
Ollie Wild
------------------------------------------------------------------------
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -368,6 +368,8 @@ static void icmp_push_reply(struct icmp_
icmph->checksum = csum_fold(csum);
skb->ip_summed = CHECKSUM_NONE;
ip_push_pending_frames(icmp_socket->sk);
+ } else {
+ ip_flush_pending_frames(icmp_socket->sk);
Your patch doesn't fit your description, the else-condition you're
adding triggers when the queue is empty, so what is the point?
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