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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