1 files changed, 4 insertions, 2 deletions

diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index b92f422f2fa8..891ed2f91467 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -48,6 +48,7 @@ static int tcp_syn_retries_max = MAX_TCP_SYNCNT;
 static int ip_ping_group_range_min[] = { 0, 0 };
 static int ip_ping_group_range_max[] = { GID_T_MAX, GID_T_MAX };
 static int comp_sack_nr_max = 255;
+static u32 u32_max_div_HZ = UINT_MAX / HZ;
 
 /* obsolete */
 static int sysctl_tcp_low_latency __read_mostly;
@@ -745,9 +746,10 @@ static struct ctl_table ipv4_net_table[] = {
         {
                 .procname       = "tcp_probe_interval",
                 .data           = &init_net.ipv4.sysctl_tcp_probe_interval,
-                .maxlen         = sizeof(int),
+                .maxlen         = sizeof(u32),
                 .mode           = 0644,
-                .proc_handler   = proc_dointvec,
+                .proc_handler   = proc_douintvec_minmax,
+                .extra2         = &u32_max_div_HZ,
         },
         {
                 .procname       = "igmp_link_local_mcast_reports",