diff options
| author | Kuniyuki Iwashima <kuniyu@google.com> | 2026-07-03 00:09:16 +0000 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2026-07-11 12:57:49 +0200 |
| commit | 0fa296dd520eb388e18b97dc553926f82a09cc1d (patch) | |
| tree | f4f3b38b2b1112cb6b08ef68890d2c1aa4d719d3 | |
| parent | 2b12ec25784954134df6cf0972a28f14dffdad50 (diff) | |
net: Hold __rtnl_net_lock() in netdev_wait_allrefs_any().
Currently, netdev_run_todo() processes pending devices from multiple
namespaces in a batch.
To expand the per-netns RTNL coverage for NETDEV_UNREGISTER, let's
acquire __rtnl_net_lock() in netdev_wait_allrefs_any().
Note that netdev_run_todo() itself will need to be namespacified
before RTNL is removed.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260703001009.1572444-6-kuniyu@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
| -rw-r--r-- | net/core/dev.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 9db053b355ef..cc77f41452ec 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -11613,8 +11613,13 @@ static struct net_device *netdev_wait_allrefs_any(struct list_head *list) rtnl_lock(); /* Rebroadcast unregister notification */ - list_for_each_entry(dev, list, todo_list) + list_for_each_entry(dev, list, todo_list) { + struct net *net = dev_net(dev); + + __rtnl_net_lock(net); call_netdevice_notifiers(NETDEV_UNREGISTER, dev); + __rtnl_net_unlock(net); + } __rtnl_unlock(); rcu_barrier(); |