diff options
Diffstat (limited to 'drivers/net/tun.c')
| -rw-r--r-- | drivers/net/tun.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index c2ad8f3858d1..e367d6310353 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -2048,8 +2048,11 @@ static int __tun_set_steering_ebpf(struct tun_struct *tun, new->prog = prog; } - old = rtnl_dereference(tun->steering_prog); + spin_lock_bh(&tun->lock); + old = rcu_dereference_protected(tun->steering_prog, + lockdep_is_held(&tun->lock)); rcu_assign_pointer(tun->steering_prog, new); + spin_unlock_bh(&tun->lock); if (old) call_rcu(&old->rcu, tun_steering_prog_free); @@ -2065,9 +2068,7 @@ static void tun_free_netdev(struct net_device *dev) free_percpu(tun->pcpu_stats); tun_flow_uninit(tun); security_tun_dev_free_security(tun->security); - rtnl_lock(); __tun_set_steering_ebpf(tun, NULL); - rtnl_unlock(); } static void tun_setup(struct net_device *dev) |