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neighbour: fix neigh_master_filtered()

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If we no longer hold RTNL, we must use netdev_master_upper_dev_get_rcu()
instead of netdev_master_upper_dev_get().

Fixes: ba0f780694 ("neighbour: no longer hold RTNL in neigh_dump_info()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20240421185753.1808077-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet 2024-04-21 18:57:53 +00:00 committed by Jakub Kicinski
parent 8d03c1534d
commit 1c04b46cbd
1 changed files with 1 additions and 1 deletions
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2
net/core/neighbour.c
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@ -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".