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| author | Eric Dumazet <edumazet@google.com> | 2025-02-05 15:51:14 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-02-21 14:01:41 +0100 |
| commit | ad66c7c4d81d01950244e02c1dacde59feea551d (patch) | |
| tree | b5626418c9dbf3cb38a0a6fe7039e763191a56a4 /net | |
| parent | 77096420be1fb6a0fda2cdb49847dd984eb5ca62 (diff) | |
| download | linux-ad66c7c4d81d01950244e02c1dacde59feea551d.tar.gz linux-ad66c7c4d81d01950244e02c1dacde59feea551d.tar.bz2 linux-ad66c7c4d81d01950244e02c1dacde59feea551d.zip | |
ipv4: use RCU protection in inet_select_addr()
[ Upstream commit 719817cd293e4fa389e1f69c396f3f816ed5aa41 ]
inet_select_addr() must use RCU protection to make
sure the net structure it reads does not disappear.
Fixes: c4544c724322 ("[NETNS]: Process inet_select_addr inside a namespace.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250205155120.1676781-7-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/devinet.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 7cf5f7d0d0de..a55e95046984 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -1351,10 +1351,11 @@ __be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope) __be32 addr = 0; unsigned char localnet_scope = RT_SCOPE_HOST; struct in_device *in_dev; - struct net *net = dev_net(dev); + struct net *net; int master_idx; rcu_read_lock(); + net = dev_net_rcu(dev); in_dev = __in_dev_get_rcu(dev); if (!in_dev) goto no_in_dev; |