Re: mmotm 2010-04-05-16-09 uploaded

From: Valdis . Kletnieks
Date: Wed Apr 07 2010 - 14:03:54 EST


On Mon, 05 Apr 2010 16:09:45 PDT, akpm@xxxxxxxxxxxxxxxxxxxx said:
> The mm-of-the-moment snapshot 2010-04-05-16-09 has been uploaded to
>
> http://userweb.kernel.org/~akpm/mmotm/

Seen in dmesg, 2.6.34-rc2-mmotm0323 didn't do this. Tossing it at all the
likely suspects, hopefully somebody will recognize it and save me the
bisecting. ;)

[ 11.488535] ctnetlink v0.93: registering with nfnetlink.
[ 11.488579]
[ 11.488579] ===================================================
[ 11.489529] [ INFO: suspicious rcu_dereference_check() usage. ]
[ 11.489988] ---------------------------------------------------
[ 11.490494] net/netfilter/nf_conntrack_ecache.c:88 invoked rcu_dereference_check() without protection!
[ 11.491024]
[ 11.491024] other info that might help us debug this:
[ 11.491025]
[ 11.492834]
[ 11.492835] rcu_scheduler_active = 1, debug_locks = 0
[ 11.494124] 1 lock held by swapper/1:
[ 11.494776] #0: (nf_ct_ecache_mutex){+.+...}, at: [<ffffffff8148c606>] nf_conntrack_register_notifier+0x1a/0x76
[ 11.495505]
[ 11.495506] stack backtrace:
[ 11.496927] Pid: 1, comm: swapper Not tainted 2.6.34-rc3-mmotm0405 #1
[ 11.497668] Call Trace:
[ 11.498419] [<ffffffff810638c5>] lockdep_rcu_dereference+0xaa/0xb2
[ 11.499185] [<ffffffff8148c629>] nf_conntrack_register_notifier+0x3d/0x76
[ 11.499967] [<ffffffff81b5dd7b>] ctnetlink_init+0x71/0xd5
[ 11.500775] [<ffffffff81b5dd0a>] ? ctnetlink_init+0x0/0xd5
[ 11.501579] [<ffffffff810001ef>] do_one_initcall+0x59/0x14e
[ 11.502396] [<ffffffff81b3268a>] kernel_init+0x144/0x1ce
[ 11.503218] [<ffffffff81003514>] kernel_thread_helper+0x4/0x10
[ 11.504047] [<ffffffff8159cc00>] ? restore_args+0x0/0x30
[ 11.504882] [<ffffffff81b32546>] ? kernel_init+0x0/0x1ce
[ 11.505715] [<ffffffff81003510>] ? kernel_thread_helper+0x0/0x10
[ 11.506636] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 11.507372] TCP bic registered

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