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| author | Wei Yongjun <yjwei@cn.fujitsu.com> | 2009-08-04 21:44:39 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-08-05 10:22:03 -0700 |
| commit | 476181cb05c6a3aea3ef42309388e255c934a06f (patch) | |
| tree | 377c2f9326457dcd7880b1dc962bedea32b2af29 /net/dccp/proto.c | |
| parent | f60f785679b507cbeeb03d2db080ab649ac86027 (diff) | |
| download | linux-476181cb05c6a3aea3ef42309388e255c934a06f.tar.gz | |
dccp: missing destroy of percpu counter variable while unload module
percpu counter dccp_orphan_count is init in dccp_init() by percpu_counter_init() while dccp module is loaded, but the destroy of it is missing while dccp module is unloaded. We can get the kernel WARNING about this. Reproduct by the following commands: $ modprobe dccp $ rmmod dccp $ modprobe dccp WARNING: at lib/list_debug.c:26 __list_add+0x27/0x5c() Hardware name: VMware Virtual Platform list_add corruption. next->prev should be prev (c080c0c4), but was (null). (next =ca7188cc). Modules linked in: dccp(+) nfsd lockd nfs_acl auth_rpcgss exportfs sunrpc Pid: 1956, comm: modprobe Not tainted 2.6.31-rc5 #55 Call Trace: [<c042f8fa>] warn_slowpath_common+0x6a/0x81 [<c053a6cb>] ? __list_add+0x27/0x5c [<c042f94f>] warn_slowpath_fmt+0x29/0x2c [<c053a6cb>] __list_add+0x27/0x5c [<c053c9b3>] __percpu_counter_init+0x4d/0x5d [<ca9c90c7>] dccp_init+0x19/0x2ed [dccp] [<c0401141>] do_one_initcall+0x4f/0x111 [<ca9c90ae>] ? dccp_init+0x0/0x2ed [dccp] [<c06971b5>] ? notifier_call_chain+0x26/0x48 [<c0444943>] ? __blocking_notifier_call_chain+0x45/0x51 [<c04516f7>] sys_init_module+0xac/0x1bd [<c04028e4>] sysenter_do_call+0x12/0x22 Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp/proto.c')
| -rw-r--r-- | net/dccp/proto.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/dccp/proto.c b/net/dccp/proto.c index 94ca8eaace7d..6294f57162bb 100644 --- a/net/dccp/proto.c +++ b/net/dccp/proto.c @@ -1159,6 +1159,7 @@ static void __exit dccp_fini(void) kmem_cache_destroy(dccp_hashinfo.bind_bucket_cachep); dccp_ackvec_exit(); dccp_sysctl_exit(); + percpu_counter_destroy(&dccp_orphan_count); } module_init(dccp_init); |