Hi all, I've decided to try and put more effort into testing on physical machines, but couldn't even get the box to boot :( [ 0.000000] page:ffffea0000040000 count:0 mapcount:1 mapping: (null) index:0x0 [ 0.000000] flags: 0x0() [ 0.000000] page dumped because: VM_BUG_ON_PAGE(!zone_spans_pfn(zone, pfn)) PANIC: early exception 06 rip 10:ffffffff8135d20f error 0 cr2 ffff88407ffff000 [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.1.0-rc1-next-20150501+ #1 [ 0.000000] Hardware name: Oracle Corporation OVCA X3-2 /ASSY,MOTHERBOARD,1U , BIOS 17021300 06/19/2012 [ 0.000000] 0000000000000000 115170652258be86 ffffffff82e077c0 ffffffff8267b3f8 [ 0.000000] 0000000000000007 0000000000001000 ffffffff82e078b8 ffffffff831a11b0 [ 0.000000] 29296e6670202c65 6e6f7a286e66705f 0000000000000000 6e6f7a2128454741 [ 0.000000] Call Trace: [ 0.000000] dump_stack (lib/dump_stack.c:52) [ 0.000000] early_idt_handler (arch/x86/kernel/head_64.S:393) [ 0.000000] set_pageblock_migratetype (mm/page_alloc.c:317) [ 0.000000] memmap_init_zone (include/linux/mm.h:858 include/linux/mm.h:871 mm/page_alloc.c:862 mm/page_alloc.c:4553) [ 0.000000] free_area_init_node (mm/page_alloc.c:5300 mm/page_alloc.c:5374) [ 0.000000] free_area_init_nodes (mm/page_alloc.c:5765) [ 0.000000] zone_sizes_init (arch/x86/mm/init.c:716) [ 0.000000] paging_init (arch/x86/mm/init_64.c:665) [ 0.000000] setup_arch (arch/x86/kernel/setup.c:1183) [ 0.000000] start_kernel (include/linux/bitmap.h:187 include/linux/cpumask.h:342 include/linux/mm_types.h:476 init/main.c:524) [ 0.000000] x86_64_start_reservations (arch/x86/kernel/head64.c:198) [ 0.000000] x86_64_start_kernel (arch/x86/kernel/head64.c:187) Thanks, Sasha -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>