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authorAditya Pakki <pakki001@umn.edu>2018-12-23 19:42:38 -0600
committerDavid S. Miller <davem@davemloft.net>2018-12-24 14:43:27 -0800
commit0eb987c874dc93f9c9d85a6465dbde20fdd3884c (patch)
tree72560a0691b897a4b31781eb1b82f9e6e8dba4c6 /net
parent89dfd0083751d00d5d7ead36f6d8b045bf89c5e1 (diff)
net/net_namespace: Check the return value of register_pernet_subsys()
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>
Diffstat (limited to 'net')
-rw-r--r--net/core/net_namespace.c3
1 files changed, 2 insertions, 1 deletions
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);

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