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author | Junwei Hu <hujunwei4@huawei.com> | 2019-05-20 14:43:59 +0800 |
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committer | David S. Miller <davem@davemloft.net> | 2019-05-20 10:45:43 -0700 |
commit | 526f5b851a96566803ee4bee60d0a34df56c77f8 (patch) | |
tree | 505f467992c5db001e508d31068e1377fcd8aa1b /net/tipc/core.c | |
parent | f49aa1de98363b6c5fba4637678d6b0ba3d18065 (diff) | |
download | linux-526f5b851a96566803ee4bee60d0a34df56c77f8.tar.gz |
tipc: fix modprobe tipc failed after switch order of device registration
Error message printed: modprobe: ERROR: could not insert 'tipc': Address family not supported by protocol. when modprobe tipc after the following patch: switch order of device registration, commit 7e27e8d6130c ("tipc: switch order of device registration to fix a crash") Because sock_create_kern(net, AF_TIPC, ...) called by tipc_topsrv_create_listener() in the initialization process of tipc_init_net(), so tipc_socket_init() must be execute before that. Meanwhile, tipc_net_id need to be initialized when sock_create() called, and tipc_socket_init() is no need to be called for each namespace. I add a variable tipc_topsrv_net_ops, and split the register_pernet_subsys() of tipc into two parts, and split tipc_socket_init() with initialization of pernet params. By the way, I fixed resources rollback error when tipc_bcast_init() failed in tipc_init_net(). Fixes: 7e27e8d6130c ("tipc: switch order of device registration to fix a crash") Signed-off-by: Junwei Hu <hujunwei4@huawei.com> Reported-by: Wang Wang <wangwang2@huawei.com> Reported-by: syzbot+1e8114b61079bfe9cbc5@syzkaller.appspotmail.com Reviewed-by: Kang Zhou <zhoukang7@huawei.com> Reviewed-by: Suanming Mou <mousuanming@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/core.c')
-rw-r--r-- | net/tipc/core.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/net/tipc/core.c b/net/tipc/core.c index ddd2e0f67c07..ed536c05252a 100644 --- a/net/tipc/core.c +++ b/net/tipc/core.c @@ -77,9 +77,6 @@ static int __net_init tipc_init_net(struct net *net) goto out_nametbl; INIT_LIST_HEAD(&tn->dist_queue); - err = tipc_topsrv_start(net); - if (err) - goto out_subscr; err = tipc_bcast_init(net); if (err) @@ -88,8 +85,6 @@ static int __net_init tipc_init_net(struct net *net) return 0; out_bclink: - tipc_bcast_stop(net); -out_subscr: tipc_nametbl_stop(net); out_nametbl: tipc_sk_rht_destroy(net); @@ -99,7 +94,6 @@ out_sk_rht: static void __net_exit tipc_exit_net(struct net *net) { - tipc_topsrv_stop(net); tipc_net_stop(net); tipc_bcast_stop(net); tipc_nametbl_stop(net); @@ -113,6 +107,11 @@ static struct pernet_operations tipc_net_ops = { .size = sizeof(struct tipc_net), }; +static struct pernet_operations tipc_topsrv_net_ops = { + .init = tipc_topsrv_init_net, + .exit = tipc_topsrv_exit_net, +}; + static int __init tipc_init(void) { int err; @@ -143,6 +142,10 @@ static int __init tipc_init(void) if (err) goto out_socket; + err = register_pernet_subsys(&tipc_topsrv_net_ops); + if (err) + goto out_pernet_topsrv; + err = tipc_bearer_setup(); if (err) goto out_bearer; @@ -150,6 +153,8 @@ static int __init tipc_init(void) pr_info("Started in single node mode\n"); return 0; out_bearer: + unregister_pernet_subsys(&tipc_topsrv_net_ops); +out_pernet_topsrv: tipc_socket_stop(); out_socket: unregister_pernet_subsys(&tipc_net_ops); @@ -167,6 +172,7 @@ out_netlink: static void __exit tipc_exit(void) { tipc_bearer_cleanup(); + unregister_pernet_subsys(&tipc_topsrv_net_ops); tipc_socket_stop(); unregister_pernet_subsys(&tipc_net_ops); tipc_netlink_stop(); |