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Warning when unloading the nf_conntack module (regression?)

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From: Arjan van de Ven <arjan@...>
To: <netdev@...>
Subject: Warning when unloading the nf_conntack module (regression?)
Date: Sunday, August 3, 2008 - 5:37 pm

The warning below started showing up on kerneloops.org in the top 20 and it appears to
be new in 2.6.27-rc (e.g. a regression)...

It happens when nf_conntrack is rmmod'd


The reports:
http://www.kerneloops.org/search.php?search=nf_conntrack_acct_fini

The warning:

WARNING: at kernel/sysctl.c:1966 unregister_sysctl_table+0xcc/0x103()

Modules : nf_conntrack(-)

Call Trace:
 [<ffffffff81043bc8>] warn_on_slowpath+0x65/0x98
 [<ffffffff8104abdf>] unregister_sysctl_table+0xcc/0x103
 [<ffffffffa0306655>] nf_conntrack_acct_fini+0x15/0x23 [nf_conntrack]
 [<ffffffffa03018a1>] nf_conntrack_cleanup+0x84/0x86 [nf_conntrack]
 [<ffffffffa0306944>] nf_conntrack_standalone_fini+0x40/0x42 [nf_conntrack] 
 [<ffffffff810700d0>] sys_delete_module+0x202/0x263
 [<ffffffff8101034a>] system_call_fastpath+0x16/0x1b


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Messages in current thread:
Warning when unloading the nf_conntack module (regression?), Arjan van de Ven, (Sun Aug 3, 5:37 pm)
Re: Warning when unloading the nf_conntack module (regressio..., Krzysztof Oledzki, (Sun Aug 3, 5:46 pm)
Re: Warning when unloading the nf_conntack module (regressio..., Krzysztof Oledzki, (Mon Aug 4, 2:33 pm)
Re: Warning when unloading the nf_conntack module (regressio..., Krzysztof Oledzki, (Mon Aug 4, 2:40 pm)
Re: Warning when unloading the nf_conntack module (regressio..., Krzysztof Oledzki, (Mon Aug 4, 3:41 pm)
Re: Warning when unloading the nf_conntack module (regressio..., Al Viro, (Mon Aug 4, 4:00 pm)
Re: Warning when unloading the nf_conntack module (regressio..., Al Viro, (Mon Aug 4, 4:30 pm)
Re: Warning when unloading the nf_conntack module (regressio..., Krzysztof Oledzki, (Mon Aug 4, 5:16 pm)
Re: Warning when unloading the nf_conntack module (regressio..., Al Viro, (Mon Aug 4, 5:56 pm)
Re: Warning when unloading the nf_conntack module (regressio..., Krzysztof Oledzki, (Mon Aug 4, 6:04 pm)
Re: Warning when unloading the nf_conntack module (regressio..., Krzysztof Oledzki, (Mon Aug 4, 9:08 pm)
Re: Warning when unloading the nf_conntack module (regressio..., Al Viro, (Tue Aug 5, 12:46 am)
Re: Warning when unloading the nf_conntack module (regressio..., Krzysztof Oledzki, (Tue Aug 5, 8:10 am)