2.6.10-rc2-mm2 crashes in early boot

From: Dave Hansen (haveblue_at_us.ibm.com)
Date: 11/20/04

  • Next message: Marcelo Tosatti: "Re: [PATCH] Task name handling for 2.4" 
    To: Andrew Morton <akpm@osdl.org>
Date:	Fri, 19 Nov 2004 16:03:54 -0800

    I enabled crashdump on 2.6.10-rc2-mm2 with CONFIG_SMP=y and hit the bug
    in smp_alloc_memory() because trampoline_base was allocated too high.
    It needs to be below 0x9F000 and crash_reserve_bootmem() reserves
    everything below 0xa0000. I'm not sure how this ever worked with SMP.

    Here's my .config: http://sprucegoose.sr71.net/~dave/lkcd-config

    Commenting out the following line makes it boot:

    static inline void crash_reserve_bootmem(void)
    {
            if (!dump_enabled) {
    -------> reserve_bootmem(0, CRASH_RELOCATE_SIZE);
                    reserve_bootmem(CRASH_BACKUP_BASE,
                            CRASH_BACKUP_SIZE + CRASH_RELOCATE_SIZE + PAGE_SIZE);
            }
    }

    The comments don't quite tell *why* LKCD needs any of the memory. (Oh,
    wait, there *aren't* any comments :)

    -- Dave

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