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    SubjectRe: [PATCH 2/2] CRED: Fix __task_cred()'s lockdep check and banner comment
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    I got below warning. Is this related to this patch?

    [ 140.173556] ===================================================
    [ 140.215379] [ INFO: suspicious rcu_dereference_check() usage. ]
    [ 140.216461] ---------------------------------------------------
    [ 140.217530] kernel/signal.c:660 invoked rcu_dereference_check() without protection!
    [ 140.218937]
    [ 140.218938] other info that might help us debug this:
    [ 140.218939]
    [ 140.220508]
    [ 140.220509] rcu_scheduler_active = 1, debug_locks = 1
    [ 140.221991] 1 lock held by init/1:
    [ 140.222668] #0: (tasklist_lock){.+.+..}, at: [<c104a0ac>] kill_something_info+0x7c/0x160
    [ 140.224709]
    [ 140.224711] stack backtrace:
    [ 140.225661] Pid: 1, comm: init Not tainted 2.6.35 #1
    [ 140.226576] Call Trace:
    [ 140.227111] [<c103cca8>] ? printk+0x18/0x20
    [ 140.227908] [<c1069884>] lockdep_rcu_dereference+0x94/0xb0
    [ 140.228931] [<c104936a>] check_kill_permission+0x15a/0x170
    [ 140.229932] [<c104a0ac>] ? kill_something_info+0x7c/0x160
    [ 140.230921] [<c1049cca>] group_send_sig_info+0x1a/0x50
    [ 140.231866] [<c1049d36>] __kill_pgrp_info+0x36/0x60
    [ 140.232780] [<c104a0d0>] kill_something_info+0xa0/0x160
    [ 140.233740] [<c10831c5>] ? __call_rcu+0xa5/0x110
    [ 140.234596] [<c104b7ee>] sys_kill+0x5e/0x70
    [ 140.235387] [<c10d1eee>] ? mntput_no_expire+0x1e/0xa0
    [ 140.236329] [<c10bbd10>] ? __fput+0x170/0x220
    [ 140.257756] [<c10bbdd9>] ? fput+0x19/0x20
    [ 140.258529] [<c137ad94>] ? restore_all_notrace+0x0/0x18
    [ 140.259496] [<c11bfb04>] ? trace_hardirqs_on_thunk+0xc/0x10
    [ 140.260531] [<c137ad61>] syscall_call+0x7/0xb
    [ 144.627841] nfsd: last server has exited, flushing export cache
    [ 154.040420] Restarting system.
    [ 154.041061] machine restart


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