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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2005-10-04 13:00:39 -0700
committerDavid S. Miller <davem@davemloft.net>2005-10-04 13:00:39 -0700
commit87bf9c97b4b3af8dec7b2b79cdfe7bfc0a0a03b2 (patch)
tree4db874d395f55023d579947a63fccd3ccfcaff77
parentdd7205ed0f022a2a5e60eb7404e6c9f49d2301c3 (diff)
[IPV6]: Fix infinite loop in udp_v6_get_port().
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv6/udp.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index e4cad11f284..bf9519341fd 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -99,7 +99,7 @@ static int udp_v6_get_port(struct sock *sk, unsigned short snum)
next:;
}
result = best;
- for(;; result += UDP_HTABLE_SIZE) {
+ for(i = 0; i < (1 << 16) / UDP_HTABLE_SIZE; i++, result += UDP_HTABLE_SIZE) {
if (result > sysctl_local_port_range[1])
result = sysctl_local_port_range[0]
+ ((result - sysctl_local_port_range[0]) &
@@ -107,6 +107,8 @@ static int udp_v6_get_port(struct sock *sk, unsigned short snum)
if (!udp_lport_inuse(result))
break;
}
+ if (i >= (1 << 16) / UDP_HTABLE_SIZE)
+ goto fail;
gotit:
udp_port_rover = snum = result;
} else {