[Crash-utility] Pages excluded in dump RHEL 6.2 - set to ffffffffffffffff

Oberman, Laurence (GSE MSE) Laurence.Oberman at hp.com
Wed Jun 20 01:55:12 UTC 2012


I have a dump from RHEL 6.2 with all these masks set to all f's, so obviously crash excludes them.

crash: page excluded: kernel virtual address: ffffffffffffffff  type: "possible"
WARNING: cannot read cpu_possible_map
crash: page excluded: kernel virtual address: ffffffffffffffff  type: "present"
WARNING: cannot read cpu_present_map
crash: page excluded: kernel virtual address: ffffffffffffffff  type: "online"
WARNING: cannot read cpu_online_map

typedef struct cpumask { DECLARE_BITMAP(bits, NR_CPUS); } cpumask_t;

#ifndef CONFIG_DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
/* These strip const, as traditionally they weren't const. */
#define cpu_possible_map        (*(cpumask_t *)cpu_possible_mask)
#define cpu_online_map          (*(cpumask_t *)cpu_online_mask)
#define cpu_present_map         (*(cpumask_t *)cpu_present_mask)
#define cpu_active_map          (*(cpumask_t *)cpu_active_mask)

Are these deprecated now and is that why they are fixed at all f's.

[root at centos62 crash]# crash System.map vmlinux  va102.2012-06-14.vmcore

crash 6.0.7
Copyright (C) 2002-2012  Red Hat, Inc.
Copyright (C) 2004, 2005, 2006, 2010  IBM Corporation
Copyright (C) 1999-2006  Hewlett-Packard Co
Copyright (C) 2005, 2006, 2011, 2012  Fujitsu Limited
Copyright (C) 2006, 2007  VA Linux Systems Japan K.K.
Copyright (C) 2005, 2011  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.

GNU gdb (GDB) 7.3.1
Copyright (C) 2011 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"...

crash: page excluded: kernel virtual address: ffffffffffffffff  type: "possible"
WARNING: cannot read cpu_possible_map
crash: page excluded: kernel virtual address: ffffffffffffffff  type: "present"
WARNING: cannot read cpu_present_map
crash: page excluded: kernel virtual address: ffffffffffffffff  type: "online"
WARNING: cannot read cpu_online_map
crash: page excluded: kernel virtual address: ffffffffffffffff  type: "cpu_present_map"
crash: page excluded: kernel virtual address: ffffffffffffffff  type: "cpu_present_map"
crash: page excluded: kernel virtual address: ffffffffffffffff  type: "cpu_online_map"
  SYSTEM MAP: System.map
DEBUG KERNEL: vmlinux (2.6.32-220.7.1.el6)
    DUMPFILE: va102.2012-06-14.vmcore  [PARTIAL DUMP]
        CPUS: 32
        DATE: Thu Jun 14 05:24:17 2012
      UPTIME: 11:13:23
LOAD AVERAGE: 215.00, 196.78, 135.81
       TASKS: 1778
    NODENAME: va1splunkindex02.va1.swtor.int
     RELEASE: 2.6.32-220.7.1.el6.x86_64
     VERSION: #1 SMP Tue Mar 6 13:54:51 EST 2012
     MACHINE: x86_64  (2799 Mhz)
      MEMORY: 48 GB
       PANIC: "Oops: 0002 [#1] SMP " (check log for details)
         PID: 2428
     COMMAND: "bash"
        TASK: ffff88063874ab40  [THREAD_INFO: ffff8806dcd1a000]
         CPU: 0
       STATE: TASK_RUNNING (PANIC)

Thanks
Laurence




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