[Crash-utility] crash version 4.0-8.8 is available

[Dave Anderson]

- If a live kernel crash session fails during initialization due to 
  read errors, and it appears to be because the running kernel was 
  configured with CONFIG_STRICT_DEVMEM, display this warning message:
  "crash: This kernel may be configured with CONFIG_STRICT_DEVMEM, 
  which renders /dev/mem unusable as a live memory source."
  (anderson at redhat.com)

- Fix for the "bt" command to prevent a segmentation violation seen
  with an x86_64 Egenera/LKCD dumpfile where the starting stack hooks 
  for the active tasks in the dumpfile header were nonsensical.
  (anderson at redhat.com)

- Fix for the chronological display of the kernel printk buffer data
  by the "log" output if the administrator has cleared the buffer
  with syslog() or klogctl().  (oomichi at mxs.nes.nec.co.jp)

- Change the message displayed when supplying a non-process stack
  address as an argument to "bt -S".  Because the supplied address
  is typically valid, such as a hard or soft IRQ stack address,
  the message will indicate "non-process address" instead of 
  "invalid stack address".  (anderson at redhat.com)

- The crash-<release>.src.rpm will create an additional binary
  crash-extensions-<release>.rpm file containing the sial.so and 
  dminfo.so extension modules.  The modules will be installed in the 
  /usr/lib[64]/crash/extensions directory.
  (holzheu at linux.vnet.ibm.com, anderson at redhat.com)

- If a shared-object filename passed to the "extend" command is not
  expressed with a fully-qualified pathname, the following directories
  will be searched in the order shown, and the first instance of the 
  file that is found will be selected:

    1. the current working directory
    2. the directory specified in the CRASH_EXTENSIONS shell 
       environment variable
    3. /usr/lib64/crash/extensions (64-bit architectures)
    4. /usr/lib/crash/extensions

  The same rules will be applied when unloading shared object files
  with "extend -u <shared-object>".  Without the patch, only files
  in the current directory or those specified with a fully-qualified
  pathname were accepted.  (anderson at redhat.com)

- Changed the manner in which the "bt" command determines which PID 0 
  swapper task was interrupted by an ia64 INIT or MCA exception.
  There is an existing ia64 INIT/MCA handler bug which incorrectly 
  writes the pseudo task's command name in its comm[] name string
  such that the cpu number may not be part of the string.  If that
  happens without this patch, the "bt" command fails to make the link
  back to the interrupted task, and displays the error message:
  "bt: unwind: failed to locate return link (ip=0x0)!"
  (anderson at redhat.com)

- Removed an unused initialized variable in get_task_mem_usage().
  (junkoi2004 at gmail.com) 

- Added a debug-level 8 statement in readmem() that will display the
  current input address and its translated physical address under the
  existing debug-level 4 "<readmem: ...>" debug line, put in place to
  aid in debugging read and/or seek errors.  
  (anderson at redhat.com)

Download from: http://people.redhat.com/anderson