Yet another "invoked rcu_dereference_check"
===================================================
[ INFO: suspicious rcu_dereference_check() usage. ]
---------------------------------------------------
kernel/exit.c:1387 invoked rcu_dereference_check() without protection!
other info that might help us debug this:
rcu_scheduler_active = 1, debug_locks = 0
2 locks held by mc/1364:
#0: (tasklist_lock){.+.+..}, at: [<ffffffff81054a76>] do_wait+0xde/0x233
#1: (&(&sighand->siglock)->rlock){-.....}, at: [<ffffffff810545a7>]
wait_consider_task+0x705/0xaf6
stack backtrace:
Pid: 1364, comm: mc Not tainted 2.6.35.5-29.fc13.x86_64 #1
Call Trace:
[<ffffffff8107bda6>] lockdep_rcu_dereference+0xaa/0xb2
[<ffffffff81054636>] wait_consider_task+0x794/0xaf6
[<ffffffff81054aa0>] do_wait+0x108/0x233
[<ffffffff81054c69>] sys_wait4+0x9e/0xc1
[<ffffffff814a12f5>] ? retint_swapgs+0x13/0x1b
[<ffffffff81052f11>] ? child_wait_callback+0x0/0x58
[<ffffffff81009c32>] system_call_fastpath+0x16/0x1b
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