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Subject[PATCH] net/net_namespace: Check the return value of register_pernet_subsys()
Date
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>
---
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 fefe72774aeb..af8849a7a9c3 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -917,7 +917,8 @@ static int __init net_ns_init(void)
init_net_initialized = true;
up_write(&pernet_ops_rwsem);

- 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);
--
2.17.1
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