linux/net/dccp
Wei Yongjun 476181cb05 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>
2009-08-05 10:22:03 -07:00
..
ccids dccp ccid-3: Fix RFC reference 2009-01-11 00:17:22 -08:00
ackvec.c dccp: Set per-connection CCIDs via socket options 2008-11-23 16:02:31 -08:00
ackvec.h dccp: Minimise header option overhead in setting the MPS 2009-03-02 03:07:23 -08:00
ccid.c dccp: Integrate the TFRC library with DCCP 2009-01-04 21:45:33 -08:00
ccid.h dccp: Clean up ccid.c after integration of CCID plugins 2009-01-04 21:43:23 -08:00
dccp.h dccp: Do not let initial option overhead shrink the MPS 2009-03-02 03:07:23 -08:00
diag.c dccp_diag: LISTEN sockets don't have CCIDs 2008-12-17 16:08:01 -08:00
feat.c dccp: Debugging functions for feature negotiation 2009-01-21 14:34:05 -08:00
feat.h dccp: Debugging functions for feature negotiation 2009-01-21 14:34:05 -08:00
input.c dccp: Integrate the TFRC library with DCCP 2009-01-04 21:45:33 -08:00
ipv4.c net: skb->dst accessors 2009-06-03 02:51:04 -07:00
ipv6.c ipv6: Use correct data types for ICMPv6 type and code 2009-06-23 04:31:07 -07:00
ipv6.h Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
Kconfig dccp: Lockless integration of CCID congestion-control plugins 2009-01-04 21:42:53 -08:00
Makefile dccp: Integrate the TFRC library with DCCP 2009-01-04 21:45:33 -08:00
minisocks.c dccp: Implement both feature-local and feature-remote Sequence Window feature 2009-01-21 14:34:04 -08:00
options.c dccp: Debugging functions for feature negotiation 2009-01-21 14:34:05 -08:00
output.c net: adding memory barrier to the poll and receive callbacks 2009-07-09 17:06:57 -07:00
probe.c dccp: API to query the current TX/RX CCID 2008-11-23 16:04:59 -08:00
proto.c dccp: missing destroy of percpu counter variable while unload module 2009-08-05 10:22:03 -07:00
sysctl.c dccp: Initialisation and type-checking of feature sysctls 2009-01-21 14:34:05 -08:00
timer.c dccp: Limit feature negotiation to connection setup phase 2008-11-12 00:42:58 -08:00