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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 14:11:15 +0100 |
| commit | 664830df7cddb52dfc1cec2f3a2870944e842c12 (patch) | |
| tree | 3212c4d8615f8ef63dc200841a593eda6db68bbf /net/ipv4 | |
| parent | c11e8f924fc4a0f7e6782c7b47b72aad3ff702aa (diff) | |
| download | linux-664830df7cddb52dfc1cec2f3a2870944e842c12.tar.gz linux-664830df7cddb52dfc1cec2f3a2870944e842c12.tar.bz2 linux-664830df7cddb52dfc1cec2f3a2870944e842c12.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/ipv4')
| -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 c8b3cf5fba4c..55b8151759bc 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -1371,10 +1371,11 @@ __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; |