Re: [PATCH 1/1] MM: virtual address debug

From: Jiri Slaby
Date: Wed Jun 18 2008 - 12:12:24 EST


Ingo Molnar napsal(a):
No NUMA configuration found
Faking a node at 0000000000000000-000000003fff0000
Entering add_active_range(0, 0, 159) 0 entries of 25600 used
Entering add_active_range(0, 256, 262128) 1 entries of 25600 used
Bootmem setup node 0 0000000000000000-000000003fff0000
NODE_DATA [000000000000a000 - 000000000003dfff]
PANIC: early exception 06 rip 10:ffffffff80ba7531 error 0 cr2 f06f53
Pid: 0, comm: swapper Not tainted 2.6.26-rc6 #7709

Call Trace:
[<ffffffff80b9c196>] early_idt_handler+0x56/0x6a
[<ffffffff80ba7531>] setup_node_bootmem+0x12a/0x2d4

Hmm, it's at
nid = phys_to_nid(nodedata_phys);
and
VIRTUAL_BUG_ON((addr >> memnode_shift) >= memnodemapsize);
triggers. Apparently memnodemapsize is not available for real numas. Going to remove the test and respin the patch with Nick's comment applied.

Thanks.
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