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| author | Aditya Pakki <pakki001@umn.edu> | 2018-12-23 19:42:38 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-05 09:20:51 +0100 |
| commit | bb76fe3f703bf000dcbbb8757c3fbf5f4ee92f2b (patch) | |
| tree | 90db102ab01e71a34a0aa4890ca62338bacf1ee6 /net | |
| parent | ef354c629ce73d0ca8e445efc947eefe4a26f622 (diff) | |
| download | linux-stable-bb76fe3f703bf000dcbbb8757c3fbf5f4ee92f2b.tar.gz linux-stable-bb76fe3f703bf000dcbbb8757c3fbf5f4ee92f2b.tar.bz2 linux-stable-bb76fe3f703bf000dcbbb8757c3fbf5f4ee92f2b.zip | |
net/net_namespace: Check the return value of register_pernet_subsys()
[ 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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/net_namespace.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index 6dab186d4b8f..c60123dff803 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -913,7 +913,8 @@ 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); |