Noticed on bootup. 

May or may not be relevant to trigger this is the fact that I dont have swap partition  ( There is enough ram to go around in the 21 century.  ) 

Oct 21 08:08:22 localhost.localdomain kernel: CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.2.3-300.fc23.x86_64 #1
Oct 21 08:08:22 localhost.localdomain kernel: Hardware name: LENOVO 20BWS18800/20BWS18800, BIOS JBET51WW (1.16 ) 07/08/2015
Oct 21 08:08:22 localhost.localdomain kernel:  0000000000000000 00000000eae7ff80 ffff88032f6f3a78 ffffffff81771fca
Oct 21 08:08:22 localhost.localdomain kernel:  0000000000000000 ffff88032f6f3ad0 ffff88032f6f3ab8 ffffffff8109e4a6
Oct 21 08:08:22 localhost.localdomain kernel:  ffff88032f6f3ae8 00000000fed10000 ffffc90001910000 0000000000006000
Oct 21 08:08:22 localhost.localdomain kernel: Call Trace:
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff81771fca>] dump_stack+0x45/0x57
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff8109e4a6>] warn_slowpath_common+0x86/0xc0
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff8109e535>] warn_slowpath_fmt+0x55/0x70
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff81065ba5>] __ioremap_caller+0x2c5/0x380
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff81065c77>] ioremap_nocache+0x17/0x20
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff81039bf9>] snb_uncore_imc_init_box+0x79/0xb0
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff810383a4>] uncore_pci_probe+0xd4/0x1a0
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff813e6055>] local_pci_probe+0x45/0xa0
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff8129a57d>] ? sysfs_do_create_link_sd.isra.2+0x6d/0xb0
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff813e724d>] pci_device_probe+0xed/0x140
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff814d0624>] driver_probe_device+0x1f4/0x450
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff814d0910>] __driver_attach+0x90/0xa0
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff814d0880>] ? driver_probe_device+0x450/0x450
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff814ce0ec>] bus_for_each_dev+0x6c/0xc0
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff814cfe2e>] driver_attach+0x1e/0x20
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff814cf97b>] bus_add_driver+0x1eb/0x280
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff81d65149>] ? uncore_cpu_setup+0x12/0x12
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff814d1180>] driver_register+0x60/0xe0
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff813e593c>] __pci_register_driver+0x4c/0x50
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff81d6521b>] intel_uncore_init+0xd2/0x2be
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff81d65149>] ? uncore_cpu_setup+0x12/0x12
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff81002123>] do_one_initcall+0xb3/0x200
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff810bbed1>] ? parse_args+0x271/0x4a0
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff81778400>] ? _raw_write_unlock_irqrestore+0x10/0x20
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff81d571dc>] kernel_init_freeable+0x18e/0x228
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff81768710>] ? rest_init+0x80/0x80
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff8176871e>] kernel_init+0xe/0xe0
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff81778d9f>] ret_from_fork+0x3f/0x70
Oct 21 08:08:22 localhost.localdomain kernel:  [<ffffffff81768710>] ? rest_init+0x80/0x80
Oct 21 08:08:22 localhost.localdomain kernel: ---[ end trace 3aeca39acdbb0c4b ]---