| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 110/209] net/net_namespace: Check the return value of register_pernet_subsys() | Date | Wed, 4 Dec 2019 18:55:22 +0100 |
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From: Aditya Pakki <pakki001@umn.edu>
[ Upstream commit 0eb987c874dc93f9c9d85a6465dbde20fdd3884c ]
In net_ns_init(), register_pernet_subsys() could fail while registering network namespace subsystems. The fix checks the return value and sends a panic() on failure.
Signed-off-by: Aditya Pakki <pakki001@umn.edu> Reviewed-by: Kirill Tkhai <ktkhai@virtuozzo.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org> --- net/core/net_namespace.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index 60b88718b1d48..1af25d53f63ca 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -854,7 +854,8 @@ static int __init net_ns_init(void) mutex_unlock(&net_mutex); - register_pernet_subsys(&net_ns_ops); + if (register_pernet_subsys(&net_ns_ops)) + panic("Could not register network namespace subsystems"); rtnl_register(PF_UNSPEC, RTM_NEWNSID, rtnl_net_newid, NULL, RTNL_FLAG_DOIT_UNLOCKED); -- 2.20.1
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