The patch titled
ipv4: kernel panic when only one unsecured port available
has been removed from the -mm tree. Its filename was
ipv4-kernel-panic-when-only-one-unsecured-port-available.patch
This patch was dropped because it is obsolete
------------------------------------------------------
Subject: ipv4: kernel panic when only one unsecured port available
From: Anton Arapov <aarapov@xxxxxxxxxx>
Steps to reproduce:
Server:
[root@server ~]# cat /etc/exports
/export *(ro,insecure)
// there is insecure ... I am using ports like "1024 to 61000"
[root@server ~] service nfs restart
Client:
1.[root@client ~]# echo 32768 32768 > /proc/sys/net/ipv4/ip_local_port_range
32768 32768
// two same numbers, for ex "32769 32769" etc.
2.[root@client ~]# cat /proc/sys/net/ipv4/ip_local_port_range
32768 32768
3.[root@client ~]# mount server:/export /import
Actual results:
Kernel always panics
Patch prevents division by zero. Kernel panics if only one unsecured port
available.
Signed-off-by: Anton Arapov <aarapov@xxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
net/ipv4/inet_connection_sock.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN net/ipv4/inet_connection_sock.c~ipv4-kernel-panic-when-only-one-unsecured-port-available net/ipv4/inet_connection_sock.c
--- a/net/ipv4/inet_connection_sock.c~ipv4-kernel-panic-when-only-one-unsecured-port-available
+++ a/net/ipv4/inet_connection_sock.c
@@ -93,7 +93,7 @@ int inet_csk_get_port(struct inet_hashin
int remaining, rover, low, high;
inet_get_local_port_range(&low, &high);
- remaining = high - low;
+ remaining = high - low + 1;
rover = net_random() % remaining + low;
do {
_
Patches currently in -mm which might be from aarapov@xxxxxxxxxx are
ipv4-kernel-panic-when-only-one-unsecured-port-available.patch
dont-truncate-proc-pid-environ-at-4096-characters.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
