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    SubjectRe: Early boot panic on machine with lots of memory
    Hello,

    Sasha, can you please apply the following patch and verify that the
    issue is gone?

    Thanks.

    diff --git a/mm/nobootmem.c b/mm/nobootmem.c
    index d23415c..4aa5e5d 100644
    --- a/mm/nobootmem.c
    +++ b/mm/nobootmem.c
    @@ -111,9 +111,6 @@ unsigned long __init free_low_memory_core_early(int nodeid)
    phys_addr_t start, end;
    u64 i;

    - /* free reserved array temporarily so that it's treated as free area */
    - memblock_free_reserved_regions();
    -
    for_each_free_mem_range(i, MAX_NUMNODES, &start, &end, NULL) {
    unsigned long start_pfn = PFN_UP(start);
    unsigned long end_pfn = min_t(unsigned long,
    @@ -124,8 +121,6 @@ unsigned long __init free_low_memory_core_early(int nodeid)
    }
    }

    - /* put region array back? */
    - memblock_reserve_reserved_regions();
    return count;
    }


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