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Diffstat (limited to 'net/core/fib_notifier.c')
-rw-r--r--net/core/fib_notifier.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/net/core/fib_notifier.c b/net/core/fib_notifier.c
index 292aab83702f..4fc202dbdfb6 100644
--- a/net/core/fib_notifier.c
+++ b/net/core/fib_notifier.c
@@ -2,6 +2,7 @@
#include <linux/notifier.h>
#include <linux/rcupdate.h>
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/init.h>
#include <net/net_namespace.h>
#include <net/fib_notifier.h>
@@ -33,8 +34,12 @@ static unsigned int fib_seq_sum(void)
rtnl_lock();
for_each_net(net) {
- list_for_each_entry(ops, &net->fib_notifier_ops, list)
+ list_for_each_entry(ops, &net->fib_notifier_ops, list) {
+ if (!try_module_get(ops->owner))
+ continue;
fib_seq += ops->fib_seq_read(net);
+ module_put(ops->owner);
+ }
}
rtnl_unlock();
@@ -46,8 +51,12 @@ static int fib_net_dump(struct net *net, struct notifier_block *nb)
struct fib_notifier_ops *ops;
list_for_each_entry_rcu(ops, &net->fib_notifier_ops, list) {
- int err = ops->fib_dump(net, nb);
+ int err;
+ if (!try_module_get(ops->owner))
+ continue;
+ err = ops->fib_dump(net, nb);
+ module_put(ops->owner);
if (err)
return err;
}