From: Eric Dumazet <edumazet@google.com>
To: "David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>
Cc: netdev@vger.kernel.org, eric.dumazet@gmail.com,
Eric Dumazet <edumazet@google.com>
Subject: [PATCH net-next] neighbour: fix neigh_master_filtered()
Date: Sun, 21 Apr 2024 18:57:53 +0000 [thread overview]
Message-ID: <20240421185753.1808077-1-edumazet@google.com> (raw)
If we no longer hold RTNL, we must use netdev_master_upper_dev_get_rcu()
instead of netdev_master_upper_dev_get().
Fixes: ba0f78069423 ("neighbour: no longer hold RTNL in neigh_dump_info()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
---
net/core/neighbour.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 0805c00c63d434589aeedaf8c40781b822d70b08..af270c202d9a96f64a409cb7f37f1d4620d948f8 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -2682,7 +2682,7 @@ static bool neigh_master_filtered(struct net_device *dev, int master_idx)
if (!master_idx)
return false;
- master = dev ? netdev_master_upper_dev_get(dev) : NULL;
+ master = dev ? netdev_master_upper_dev_get_rcu(dev) : NULL;
/* 0 is already used to denote NDA_MASTER wasn't passed, therefore need another
* invalid value for ifindex to denote "no master".
--
2.44.0.769.g3c40516874-goog
next reply other threads:[~2024-04-21 18:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-21 18:57 Eric Dumazet [this message]
2024-04-23 13:47 ` [PATCH net-next] neighbour: fix neigh_master_filtered() Jiri Pirko
2024-04-24 2:20 ` patchwork-bot+netdevbpf
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