[PATCH] net/net_namespace: Check the return value of register_pernet_subsys()
From: Aditya Pakki <hidden>
Date: 2018-12-24 01:43:10
Also in:
lkml
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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 <redacted> --- 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