This patch fixed a possible division-by-zero in inet_csk_get_port
treating situation low > high as if low == high.
Signed-off-by: Denis V. Lunev <[EMAIL PROTECTED]>
CC: Antov Arapov <[EMAIL PROTECTED]>
--- ./net/ipv4/inet_connection_sock.c.getport 2007-10-09 15:16:02.000000000
+0400
+++ ./net/ipv4/inet_connection_sock.c 2007-10-10 12:44:04.000000000 +0400
@@ -80,7 +80,14 @@ int inet_csk_get_port(struct inet_hashin
int low = sysctl_local_port_range[0];
int high = sysctl_local_port_range[1];
int remaining = (high - low) + 1;
- int rover = net_random() % (high - low) + low;
+ int rover;
+
+ /* Treat low > high as high == low */
+ if (remaining <= 1) {
+ remaining = 1;
+ rover = low;
+ } else
+ rover = net_random() % (high - low) + low;
do {
head = &hashinfo->bhash[inet_bhashfn(rover,
hashinfo->bhash_size)];
-
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