1 files changed, 6 insertions, 5 deletions

diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c
index 18e325ce6542..aa5847a16713 100644
--- a/net/netfilter/nf_log.c
+++ b/net/netfilter/nf_log.c
@@ -418,16 +418,17 @@ static int nf_log_proc_dostring(struct ctl_table *table, int write,
 {
         const struct nf_logger *logger;
         char buf[NFLOGGER_NAME_LEN];
-        size_t size = *lenp;
         int r = 0;
         int tindex = (unsigned long)table->extra1;
         struct net *net = current->nsproxy->net_ns;
 
         if (write) {
-                if (size > sizeof(buf))
-                        size = sizeof(buf);
-                if (copy_from_user(buf, buffer, size))
-                        return -EFAULT;
+                struct ctl_table tmp = *table;
+
+                tmp.data = buf;
+                r = proc_dostring(&tmp, write, buffer, lenp, ppos);
+                if (r)
+                        return r;
 
                 if (!strcmp(buf, "NONE")) {
                         nf_log_unbind_pf(net, tindex);