mirror of
https://github.com/torvalds/linux.git
synced 2024-11-18 01:51:53 +00:00
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
/*
|
|
* linux/net/sunrpc/sunrpc_syms.c
|
|
*
|
|
* Symbols exported by the sunrpc module.
|
|
*
|
|
* Copyright (C) 1997 Olaf Kirch <okir@monad.swb.de>
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/uio.h>
|
|
#include <linux/unistd.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/sunrpc/sched.h>
|
|
#include <linux/sunrpc/clnt.h>
|
|
#include <linux/sunrpc/svc.h>
|
|
#include <linux/sunrpc/svcsock.h>
|
|
#include <linux/sunrpc/auth.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/sunrpc/rpc_pipe_fs.h>
|
|
#include <linux/sunrpc/xprtsock.h>
|
|
|
|
#include "netns.h"
|
|
|
|
unsigned int sunrpc_net_id;
|
|
EXPORT_SYMBOL_GPL(sunrpc_net_id);
|
|
|
|
static __net_init int sunrpc_init_net(struct net *net)
|
|
{
|
|
int err;
|
|
struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
|
|
|
|
err = rpc_proc_init(net);
|
|
if (err)
|
|
goto err_proc;
|
|
|
|
err = ip_map_cache_create(net);
|
|
if (err)
|
|
goto err_ipmap;
|
|
|
|
err = unix_gid_cache_create(net);
|
|
if (err)
|
|
goto err_unixgid;
|
|
|
|
err = rpc_pipefs_init_net(net);
|
|
if (err)
|
|
goto err_pipefs;
|
|
|
|
INIT_LIST_HEAD(&sn->all_clients);
|
|
spin_lock_init(&sn->rpc_client_lock);
|
|
spin_lock_init(&sn->rpcb_clnt_lock);
|
|
return 0;
|
|
|
|
err_pipefs:
|
|
unix_gid_cache_destroy(net);
|
|
err_unixgid:
|
|
ip_map_cache_destroy(net);
|
|
err_ipmap:
|
|
rpc_proc_exit(net);
|
|
err_proc:
|
|
return err;
|
|
}
|
|
|
|
static __net_exit void sunrpc_exit_net(struct net *net)
|
|
{
|
|
rpc_pipefs_exit_net(net);
|
|
unix_gid_cache_destroy(net);
|
|
ip_map_cache_destroy(net);
|
|
rpc_proc_exit(net);
|
|
}
|
|
|
|
static struct pernet_operations sunrpc_net_ops = {
|
|
.init = sunrpc_init_net,
|
|
.exit = sunrpc_exit_net,
|
|
.id = &sunrpc_net_id,
|
|
.size = sizeof(struct sunrpc_net),
|
|
};
|
|
|
|
static int __init
|
|
init_sunrpc(void)
|
|
{
|
|
int err = rpc_init_mempool();
|
|
if (err)
|
|
goto out;
|
|
err = rpcauth_init_module();
|
|
if (err)
|
|
goto out2;
|
|
|
|
cache_initialize();
|
|
|
|
err = register_pernet_subsys(&sunrpc_net_ops);
|
|
if (err)
|
|
goto out3;
|
|
|
|
err = register_rpc_pipefs();
|
|
if (err)
|
|
goto out4;
|
|
|
|
sunrpc_debugfs_init();
|
|
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
|
|
rpc_register_sysctl();
|
|
#endif
|
|
svc_init_xprt_sock(); /* svc sock transport */
|
|
init_socket_xprt(); /* clnt sock transport */
|
|
return 0;
|
|
|
|
out4:
|
|
unregister_pernet_subsys(&sunrpc_net_ops);
|
|
out3:
|
|
rpcauth_remove_module();
|
|
out2:
|
|
rpc_destroy_mempool();
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static void __exit
|
|
cleanup_sunrpc(void)
|
|
{
|
|
rpc_cleanup_clids();
|
|
rpcauth_remove_module();
|
|
cleanup_socket_xprt();
|
|
svc_cleanup_xprt_sock();
|
|
sunrpc_debugfs_exit();
|
|
unregister_rpc_pipefs();
|
|
rpc_destroy_mempool();
|
|
unregister_pernet_subsys(&sunrpc_net_ops);
|
|
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
|
|
rpc_unregister_sysctl();
|
|
#endif
|
|
rcu_barrier(); /* Wait for completion of call_rcu()'s */
|
|
}
|
|
MODULE_LICENSE("GPL");
|
|
fs_initcall(init_sunrpc); /* Ensure we're initialised before nfs */
|
|
module_exit(cleanup_sunrpc);
|