From 546a42410bf76075e157dbdd94c097b3bc44b25a Mon Sep 17 00:00:00 2001 From: David Howells Date: Mon, 14 Sep 2020 13:26:47 +0100 Subject: rxrpc: Fix conn bundle leak in net-namespace exit When the network namespace exits, rxrpc_clean_up_local_conns() needs to unbundle each client connection it evicts. Fix it to do this. kernel BUG at net/rxrpc/conn_object.c:481! RIP: 0010:rxrpc_destroy_all_connections.cold+0x11/0x13 net/rxrpc/conn_object.c:481 Call Trace: rxrpc_exit_net+0x1a4/0x2e0 net/rxrpc/net_ns.c:119 ops_exit_list+0xb0/0x160 net/core/net_namespace.c:186 cleanup_net+0x4ea/0xa00 net/core/net_namespace.c:603 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Fixes: 245500d853e9 ("rxrpc: Rewrite the client connection manager") Reported-by: syzbot+52071f826a617b9c76ed@syzkaller.appspotmail.com Signed-off-by: David Howells --- net/rxrpc/conn_client.c | 1 + 1 file changed, 1 insertion(+) (limited to 'net/rxrpc') diff --git a/net/rxrpc/conn_client.c b/net/rxrpc/conn_client.c index 180be4da8d26..0eb36ba52485 100644 --- a/net/rxrpc/conn_client.c +++ b/net/rxrpc/conn_client.c @@ -1112,6 +1112,7 @@ void rxrpc_clean_up_local_conns(struct rxrpc_local *local) conn = list_entry(graveyard.next, struct rxrpc_connection, cache_link); list_del_init(&conn->cache_link); + rxrpc_unbundle_conn(conn); rxrpc_put_connection(conn); } -- cgit