crash seek error, kernel_config_data and cpu_possible_mask

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Hi, I'm happy to ask developers for help , I'm really confused for my crash error.

My computer room is running 60 nodes,OS: suse 11 sp1 x86_64  Kernel:2.6.32.12-0.7-default   Crash:crash-5.0.1-1.5.5

recently , server often kernel crash, Kdump service dump the vmcore in /var/crash/happen-date/vmcore,

I installed the kernel-debuginfo so that check out why crash ,but I got this:



 linux:~/bb # crash -d8 vmlinux-2.6.32.12-0.7-default vmlinux-2.6.32.12-0.7-default.debug vmcore

crash 5.0.1
Copyright (C) 2002-2010  Red Hat, Inc.
Copyright (C) 2004, 2005, 2006  IBM Corporation
Copyright (C) 1999-2006  Hewlett-Packard Co
Copyright (C) 2005, 2006  Fujitsu Limited
Copyright (C) 2006, 2007  VA Linux Systems Japan K.K.
Copyright (C) 2005  NEC Corporation
Copyright (C) 1999, 2002, 2007  Silicon Graphics, Inc.
Copyright (C) 1999, 2000, 2001, 2002  Mission Critical Linux, Inc.
This program is free software, covered by the GNU General Public License,
and you are welcome to change it and/or distribute copies of it under
certain conditions.  Enter "help copying" to see the conditions.
This program has absolutely no warranty.  Enter "help warranty" for details.

compressed kdump: header->utsname.machine:
diskdump_data:
          filename: (null)
             flags: 6 (KDUMP_CMPRS_LOCAL|ERROR_EXCLUDED)
               dfd: 3
               ofp: 0
      machine_type: 62 (EM_X86_64)

            header: ccdfe0
           signature: "KDUMP   "
      header_version: 1
             utsname:
               sysname:
              nodename:
               release:
               version:
               machine:
            domainname:
           timestamp:
                tv_sec: 0
               tv_usec: 0
              status: 0 ()
          block_size: 4096
        sub_hdr_size: 1
       bitmap_blocks: 400
           max_mapnr: 6553600
    total_ram_blocks: 0
       device_blocks: 0
      written_blocks: 0
         current_cpu: 0
             nr_cpus: 1
      tasks[nr_cpus]: 0

        sub_header: 0 (n/a)

  sub_header_kdump: cceff0
           phys_base: 0
          dump_level: 0 (0x0)

       data_offset: 192000
        block_size: 4096
       block_shift: 12
            bitmap: 7fcca1e01010
        bitmap_len: 1638400
   dumpable_bitmap: 7fcca1002010
              byte: 0
               bit: 0
   compressed_page: ce3220
         curbufptr: 0

 page_cache_hdr[0]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: cd3210
        pg_hit_count: 0
 page_cache_hdr[1]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: cd4210
        pg_hit_count: 0
 page_cache_hdr[2]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: cd5210
        pg_hit_count: 0
 page_cache_hdr[3]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: cd6210
        pg_hit_count: 0
 page_cache_hdr[4]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: cd7210
        pg_hit_count: 0
 page_cache_hdr[5]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: cd8210
        pg_hit_count: 0
 page_cache_hdr[6]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: cd9210
        pg_hit_count: 0
 page_cache_hdr[7]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: cda210
        pg_hit_count: 0
 page_cache_hdr[8]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: cdb210
        pg_hit_count: 0
 page_cache_hdr[9]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: cdc210
        pg_hit_count: 0
page_cache_hdr[10]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: cdd210
        pg_hit_count: 0
page_cache_hdr[11]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: cde210
        pg_hit_count: 0
page_cache_hdr[12]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: cdf210
        pg_hit_count: 0
page_cache_hdr[13]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: ce0210
        pg_hit_count: 0
page_cache_hdr[14]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: ce1210
        pg_hit_count: 0
page_cache_hdr[15]:
            pg_flags: 0 ()
             pg_addr: 0
           pg_bufptr: ce2210
        pg_hit_count: 0

    page_cache_buf: cd3210
       evict_index: 0
         evictions: 0
          accesses: 0
      cached_reads: 0
       valid_pages: cd0000
crash: pv_init_ops exists: ARCH_PVOPS
compressed kdump: phys_base: 0
gdb vmlinux-2.6.32.12-0.7-default.debug
GNU gdb (GDB) 7.0
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu"...
GETBUF(248 -> 0)
  GETBUF(1500 -> 1)

  FREEBUF(1)
FREEBUF(0)
<readmem: ffffffff8141ae40, KVADDR, "kernel_config_data", 32768, (ROE), 1ab66b0>
    addr: ffffffff8141ae40  paddr: 141ae40  cnt: 448
crash: seek error: kernel virtual address: ffffffff8141ae40  type: "kernel_config_data"
WARNING: cannot read kernel_config_data
GETBUF(248 -> 0)
FREEBUF(0)
GETBUF(512 -> 0)
<readmem: ffffffff81413640, KVADDR, "cpu_possible_mask", 8, (FOE), 7fff84995368>
    addr: ffffffff81413640  paddr: 1413640  cnt: 8
crash: seek error: kernel virtual address: ffffffff81413640  type: "cpu_possible_mask"

if I  use  --minimal can got   crash>   but It limits a lot..

something like crash can't find cpu_possible_mask and cpu_possible_mask  in vmcore I guess,

I Google it and find some email talking about this , read the whitepaper writed by anderson, but I can't resolve it.

any help I am really appreciated. Any other infomation need I provide, please tell me ,I'll reply as soon as possible.


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