A machine with only node 1 was observed to crash very early in boot with the following message [ 0.000000] BUG: unable to handle kernel paging request at 000000000002a3c8 [ 0.000000] PGD 0 [ 0.000000] Modules linked in: [ 0.000000] Hardware name: Supermicro H8DSP-8/H8DSP-8, BIOS 080011 06/30/2006 [ 0.000000] task: ffffffff81c0d500 ti: ffffffff81c00000 task.ti: ffffffff81c00000 [ 0.000000] RIP: 0010:[<ffffffff816dbd63>] [<ffffffff816dbd63>] reserve_bootmem_region+0x6a/0xef [ 0.000000] RSP: 0000:ffffffff81c03eb0 EFLAGS: 00010086 [ 0.000000] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 0.000000] RDX: ffffffff81c03ec0 RSI: ffffffff81d205c0 RDI: ffffffff8213ee60 [ 0.000000] R13: ffffea0000000000 R14: ffffea0000000020 R15: ffffea0000000020 [ 0.000000] FS: 0000000000000000(0000) GS:ffff8800fba00000(0000) knlGS:0000000000000000 [ 0.000000] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.000000] CR2: 000000000002a3c8 CR3: 0000000001c06000 CR4: 00000000000006b0 [ 0.000000] Stack: [ 0.000000] ffffffff81c03f00 0000000000000400 ffff8800fbfc3200 ffffffff81e2a2c0 [ 0.000000] ffffffff81c03fb0 ffffffff81c03f20 ffffffff81dadf7d ffffea0002000040 [ 0.000000] ffffea0000000000 0000000000000000 000000000000ffff 0000000000000001 [ 0.000000] Call Trace: [ 0.000000] [<ffffffff81dadf7d>] free_all_bootmem+0x4b/0x12a [ 0.000000] [<ffffffff81d97122>] mem_init+0x70/0xa3 [ 0.000000] [<ffffffff81d78f21>] start_kernel+0x25b/0x49b This series is the lowest-risk solution to the problem. mm/page_alloc.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-) -- 2.6.4 -- 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>