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    SubjectRe: [boot crash] Re: [PATCHSET x86/numa] x86-64, NUMA: bring sanity to NUMA config/emulation
    On Thu, Feb 17, 2011 at 01:35:11PM +0100, Ingo Molnar wrote:
    >
    > FYI, -tip testing has found the follow boot crash:
    >
    > [ 0.000000] init_memory_mapping: 0000000000000000-000000003fff0000
    > [ 0.000000] 0000000000 - 003fff0000 page 4k
    > [ 0.000000] kernel direct mapping tables up to 3fff0000 @ 3fdee000-3fff0000
    > PANIC: early exception 06 rip 10:ffffffff8102f069 error 0 cr2 f06f53
    > [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.38-rc5-tip+ #94135
    > [ 0.000000] Call Trace:
    > [ 0.000000] [<ffffffff8199019e>] ? early_idt_handler+0x5e/0x71
    > [ 0.000000] [<ffffffff8102f069>] ? __phys_addr+0x69/0x70
    > [ 0.000000] [<ffffffff8102f009>] ? __phys_addr+0x9/0x70
    > [ 0.000000] [<ffffffff819a0156>] ? initmem_init+0xf0/0xa0d
    > [ 0.000000] [<ffffffff819a4cc2>] ? parse_crashkernel+0x40/0x2a1
    > [ 0.000000] [<ffffffff810303e0>] ? dummy_numa_init+0x0/0x70
    > [ 0.000000] [<ffffffff810284a9>] ? is_vsmp_box+0x9/0x50
    > [ 0.000000] [<ffffffff81992f4a>] ? setup_arch+0x9f9/0xaec
    > [ 0.000000] [<ffffffff813c585c>] ? printk+0x41/0x45
    > [ 0.000000] [<ffffffff81990999>] ? start_kernel+0x9d/0x3b5
    > [ 0.000000] [<ffffffff8199032b>] ? x86_64_start_reservations+0x132/0x136
    > [ 0.000000] [<ffffffff8199047d>] ? x86_64_start_kernel+0x14e/0x15d
    >
    > Full crashlog attached below, config attached as well.
    >
    > Testbox is a standard dual-core Athlon64 whitebox PC, with no particular
    > weirdnesses. The box boots fine with x86/mm removed from tip:master.
    >
    > I've excluded x86/mm from tip:master for the time being. This was with the
    > e23bba604433 x86/mm tree.

    Does the following patch from Yinghai fix the problem?

    http://thread.gmane.org/gmane.linux.kernel/1101528/focus=1101598

    Thanks.

    --
    tejun


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