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c929ea0b91
After removing sunrpc module, I get many kmemleak information as,
unreferenced object 0xffff88003316b1e0 (size 544):
comm "gssproxy", pid 2148, jiffies 4294794465 (age 4200.081s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffffb0cfb58a>] kmemleak_alloc+0x4a/0xa0
[<ffffffffb03507fe>] kmem_cache_alloc+0x15e/0x1f0
[<ffffffffb0639baa>] ida_pre_get+0xaa/0x150
[<ffffffffb0639cfd>] ida_simple_get+0xad/0x180
[<ffffffffc06054fb>] nlmsvc_lookup_host+0x4ab/0x7f0 [lockd]
[<ffffffffc0605e1d>] lockd+0x4d/0x270 [lockd]
[<ffffffffc06061e5>] param_set_timeout+0x55/0x100 [lockd]
[<ffffffffc06cba24>] svc_defer+0x114/0x3f0 [sunrpc]
[<ffffffffc06cbbe7>] svc_defer+0x2d7/0x3f0 [sunrpc]
[<ffffffffc06c71da>] rpc_show_info+0x8a/0x110 [sunrpc]
[<ffffffffb044a33f>] proc_reg_write+0x7f/0xc0
[<ffffffffb038e41f>] __vfs_write+0xdf/0x3c0
[<ffffffffb0390f1f>] vfs_write+0xef/0x240
[<ffffffffb0392fbd>] SyS_write+0xad/0x130
[<ffffffffb0d06c37>] entry_SYSCALL_64_fastpath+0x1a/0xa9
[<ffffffffffffffff>] 0xffffffffffffffff
I found, the ida information (dynamic memory) isn't cleanup.
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Fixes: 2f048db468 ("SUNRPC: Add an identifier for struct rpc_clnt")
Cc: stable@vger.kernel.org # v3.12+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
138 lines
2.7 KiB
C
138 lines
2.7 KiB
C
/*
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* linux/net/sunrpc/sunrpc_syms.c
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*
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* Symbols exported by the sunrpc module.
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*
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* Copyright (C) 1997 Olaf Kirch <okir@monad.swb.de>
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/uio.h>
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#include <linux/unistd.h>
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#include <linux/init.h>
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#include <linux/sunrpc/sched.h>
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#include <linux/sunrpc/clnt.h>
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#include <linux/sunrpc/svc.h>
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#include <linux/sunrpc/svcsock.h>
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#include <linux/sunrpc/auth.h>
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#include <linux/workqueue.h>
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#include <linux/sunrpc/rpc_pipe_fs.h>
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#include <linux/sunrpc/xprtsock.h>
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#include "netns.h"
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unsigned int sunrpc_net_id;
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EXPORT_SYMBOL_GPL(sunrpc_net_id);
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static __net_init int sunrpc_init_net(struct net *net)
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{
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int err;
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struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
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err = rpc_proc_init(net);
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if (err)
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goto err_proc;
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err = ip_map_cache_create(net);
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if (err)
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goto err_ipmap;
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err = unix_gid_cache_create(net);
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if (err)
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goto err_unixgid;
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err = rpc_pipefs_init_net(net);
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if (err)
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goto err_pipefs;
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INIT_LIST_HEAD(&sn->all_clients);
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spin_lock_init(&sn->rpc_client_lock);
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spin_lock_init(&sn->rpcb_clnt_lock);
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return 0;
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err_pipefs:
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unix_gid_cache_destroy(net);
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err_unixgid:
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ip_map_cache_destroy(net);
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err_ipmap:
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rpc_proc_exit(net);
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err_proc:
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return err;
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}
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static __net_exit void sunrpc_exit_net(struct net *net)
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{
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rpc_pipefs_exit_net(net);
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unix_gid_cache_destroy(net);
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ip_map_cache_destroy(net);
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rpc_proc_exit(net);
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}
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static struct pernet_operations sunrpc_net_ops = {
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.init = sunrpc_init_net,
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.exit = sunrpc_exit_net,
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.id = &sunrpc_net_id,
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.size = sizeof(struct sunrpc_net),
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};
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static int __init
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init_sunrpc(void)
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{
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int err = rpc_init_mempool();
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if (err)
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goto out;
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err = rpcauth_init_module();
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if (err)
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goto out2;
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cache_initialize();
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err = register_pernet_subsys(&sunrpc_net_ops);
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if (err)
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goto out3;
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err = register_rpc_pipefs();
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if (err)
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goto out4;
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sunrpc_debugfs_init();
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#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
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rpc_register_sysctl();
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#endif
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svc_init_xprt_sock(); /* svc sock transport */
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init_socket_xprt(); /* clnt sock transport */
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return 0;
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out4:
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unregister_pernet_subsys(&sunrpc_net_ops);
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out3:
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rpcauth_remove_module();
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out2:
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rpc_destroy_mempool();
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out:
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return err;
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}
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static void __exit
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cleanup_sunrpc(void)
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{
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rpc_cleanup_clids();
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rpcauth_remove_module();
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cleanup_socket_xprt();
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svc_cleanup_xprt_sock();
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sunrpc_debugfs_exit();
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unregister_rpc_pipefs();
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rpc_destroy_mempool();
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unregister_pernet_subsys(&sunrpc_net_ops);
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#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
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rpc_unregister_sysctl();
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#endif
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rcu_barrier(); /* Wait for completion of call_rcu()'s */
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}
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MODULE_LICENSE("GPL");
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fs_initcall(init_sunrpc); /* Ensure we're initialised before nfs */
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module_exit(cleanup_sunrpc);
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