From f6efbc884282dd0fae1f72fc0c0f282832d45f4e Mon Sep 17 00:00:00 2001
From: Paolo Pisati <piso@FreeBSD.org>
Date: Mon, 17 Mar 2008 22:08:31 +0000
Subject: [PATCH] Don't abuse stack space while in kernel land, use heap
 instead.

---
 sys/netinet/libalias/alias_irc.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/sys/netinet/libalias/alias_irc.c b/sys/netinet/libalias/alias_irc.c
index ae8ce2a3dec5..98f82ad41a95 100644
--- a/sys/netinet/libalias/alias_irc.c
+++ b/sys/netinet/libalias/alias_irc.c
@@ -59,6 +59,7 @@ __FBSDID("$FreeBSD$");
 #include <errno.h>
 #include <sys/types.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <limits.h>
 #endif
@@ -80,6 +81,8 @@ __FBSDID("$FreeBSD$");
 #define IRC_CONTROL_PORT_NUMBER_1 6667
 #define IRC_CONTROL_PORT_NUMBER_2 6668
 
+char *newpacket;
+
 /* Local defines */
 #define DBprintf(a)
 
@@ -103,8 +106,12 @@ fingerprint(struct libalias *la, struct ip *pip, struct alias_data *ah)
 static int 
 protohandler(struct libalias *la, struct ip *pip, struct alias_data *ah)
 {
-	
-	AliasHandleIrcOut(la, pip, ah->lnk, ah->maxpktsize);
+
+	newpacket = malloc(IP_MAXPACKET);
+	if (newpacket) {
+		AliasHandleIrcOut(la, pip, ah->lnk, ah->maxpktsize);
+		free(newpacket);
+	}
 	return (0);
 }
 
@@ -196,9 +203,7 @@ AliasHandleIrcOut(struct libalias *la,
 	/* Handle CTCP commands - the buffer may have to be copied */
 lFOUND_CTCP:
 	{
-		char newpacket[65536];	/* Estimate of maximum packet size
-					 * :) */
-		unsigned int copyat = i;	/* Same */
+		unsigned int copyat = i;
 		unsigned int iCopy = 0;	/* How much data have we written to
 					 * copy-back string? */
 		unsigned long org_addr;	/* Original IP address */