Hi, I downloaded and build this kernel http://koji.fedoraproject.org/koji/buildinfo?buildID=187678 on my F13 box. I am getting an error on boot. You might be interested in this =================================================== [ INFO: suspicious rcu_dereference_check() usage. ] --------------------------------------------------- kernel/sched.c:616 invoked rcu_dereference_check() without protection! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 0 3 locks held by swapper/1: #0: (cpu_add_remove_lock){+.+.+.}, at: [<ffffffff8105292e>] cpu_maps_update_begin+0x17/0x19 #1: (cpu_hotplug.lock){+.+.+.}, at: [<ffffffff81052973>] cpu_hotplug_begin+0x2c/0x53 #2: (&rq->lock){-.-...}, at: [<ffffffff814943a9>] init_idle+0x30/0x136 stack backtrace: Pid: 1, comm: swapper Not tainted 2.6.35-1.fc13.x86_64 #1 Call Trace: [<ffffffff8107bb7a>] lockdep_rcu_dereference+0xaa/0xb2 [<ffffffff8104012f>] task_group+0x80/0x8f [<ffffffff814943a9>] ? init_idle+0x30/0x136 [<ffffffff81040155>] set_task_rq+0x17/0x73 [<ffffffff81494468>] init_idle+0xef/0x136 [<ffffffff81494885>] fork_idle+0xbd/0xce [<ffffffff8107c243>] ? mark_held_locks+0x52/0x70 [<ffffffff81492e6a>] do_fork_idle+0x1c/0x2d [<ffffffff81492283>] do_boot_cpu+0x145/0xa3b [<ffffffff811127ec>] ? alloc_page_interleave+0x79/0x86 [<ffffffff81492e4e>] ? do_fork_idle+0x0/0x2d [<ffffffff81492c74>] native_cpu_up+0xfb/0x1ce [<ffffffff81494966>] _cpu_up+0xa0/0x115 [<ffffffff81494ab1>] cpu_up+0xd6/0xe8 [<ffffffff81d78695>] kernel_init+0x105/0x2c9 [<ffffffff8100aaa4>] kernel_thread_helper+0x4/0x10 [<ffffffff8149bfd0>] ? restore_args+0x0/0x30 [<ffffffff81d78590>] ? kernel_init+0x0/0x2c9 [<ffffffff8100aaa0>] ? kernel_thread_helper+0x0/0x10 Booting Node 0, Processors #1lockdep: fixing up alternatives. #2lockdep: fixing up alternatives. #3 Ok. Regards, M _______________________________________________ kernel mailing list kernel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/kernel