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Subject2.6.35-rc2-git1 - lib/idr.c:605 invoked rcu_dereference_check() without protection!
From
[    2.677955] [ INFO: suspicious rcu_dereference_check() usage. ]
[ 2.679089] ---------------------------------------------------
[ 2.680276] lib/idr.c:605 invoked rcu_dereference_check() without protection!
[ 2.681499]
[ 2.681500] other info that might help us debug this:
[ 2.681501]
[ 2.685509]
[ 2.685510] rcu_scheduler_active = 1, debug_locks = 1
[ 2.688221] 1 lock held by swapper/1:
[ 2.689587] #0: (mtd_table_mutex){+.+...}, at:
[<ffffffff812bea45>] register_mtd_user+0x1a/0x69
[ 2.691096]
[ 2.691098] stack backtrace:
[ 2.694059] Pid: 1, comm: swapper Not tainted 2.6.35-rc2-git1 #8
[ 2.695601] Call Trace:
[ 2.697243] [<ffffffff81064e9c>] lockdep_rcu_dereference+0x9d/0xa5
[ 2.698868] [<ffffffff811b9c86>] idr_get_next+0x60/0x124
[ 2.700556] [<ffffffff812be779>] __mtd_next_device+0x1b/0x1d
[ 2.702238] [<ffffffff812bea7c>] register_mtd_user+0x51/0x69
[ 2.703964] [<ffffffff816cca45>] init_mtdchar+0xb3/0xd3
[ 2.705686] [<ffffffff816cc992>] ? init_mtdchar+0x0/0xd3
[ 2.707470] [<ffffffff810001ef>] do_one_initcall+0x59/0x14e
[ 2.709255] [<ffffffff816a768a>] kernel_init+0x144/0x1ce
[ 2.711082] [<ffffffff81003054>] kernel_thread_helper+0x4/0x10
[ 2.712862] [<ffffffff813ca480>] ? restore_args+0x0/0x30
[ 2.714647] [<ffffffff816a7546>] ? kernel_init+0x0/0x1ce
[ 2.716415] [<ffffffff81003050>] ? kernel_thread_helper+0x0/0x10


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