1 files changed, 6 insertions, 1 deletions

diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 014982b61564..51ca946e3392 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1317,14 +1317,19 @@ static int devinet_sysctl_forward(ctl_table *ctl, int write,
 {
         int *valp = ctl->data;
         int val = *valp;
+        loff_t pos = *ppos;
         int ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
 
         if (write && *valp != val) {
                 struct net *net = ctl->extra2;
 
                 if (valp != &IPV4_DEVCONF_DFLT(net, FORWARDING)) {
-                        if (!rtnl_trylock())
+                        if (!rtnl_trylock()) {
+                                /* Restore the original values before restarting */
+                                *valp = val;
+                                *ppos = pos;
                                 return restart_syscall();
+                        }
                         if (valp == &IPV4_DEVCONF_ALL(net, FORWARDING)) {
                                 inet_forward_change(net);
                         } else if (*valp) {