[Crash-utility] [ANNOUNCE] crash version 6.0.7 is available

[Dave Anderson]

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

 - Enhanced the "search" command to allow the searched-for value
   to be entered as a crash (expression) or a kernel symbol name.
   The resultant value of an (expression) or kernel symbol value
   must fit into in the designated value size if -w or -h are used,
   and neither variant may be used with the -c option.  If found, 
   both the resultant value and the argument input string will be
   displayed next to the target address(es).
   (anderson at redhat.com)
 
 - Added a new "search -t" option that will restrict the search
   to the kernel stack pages of all tasks.  If one or more matches 
   are found in a task's kernel stack, the output is preceded 
   with a task-identifying header.
   (anderson at redhat.com)

 - Fix for the s390x "bt -[tT]" options when run on an active task
   on a live system.  Without the patch, the options fail with the 
   message "bt: invalid/stale stack pointer for this task: 0".
   (anderson at redhat.com)

 - Fix for s390x "vm -p" option, which may show invalid user to
   physical address translation data if a page is not mapped.
   Without the patch, a page's translation may indicate
   "<address>   SWAP: (unknown swap location)  OFFSET: 0",
   or show an incorrect swap offset on an actual swap device.
   (anderson at redhat.com)

 - Added new "vm -[xd]" options to be used in conjunction with
   "vm -[mv]", which override the current default output format 
   with hexadecimal or decimal format for just the command instance.  
   Without the patch, it would require changing the default output 
   format with "hex" or "dec" prior to executing "vm -[mv]".  The 
   new flags may also be used with "foreach vm -[mv]".
   (anderson at redhat.com)

 - Fix for the s390x "vm -p" and "vtop -u &ltuser-address>" commands
   if the page containing the relevant PTE is not mapped.  Without
   the patch, the commands fail with the error message "vm: read error:
   kernel virtual address: 0  type: entry" or "vtop: read error: kernel
   virtual address: 0  type: entry"
   (holzheu at linux.vnet.ibm.com)

 - Fix for the s390x "vm -p" command and "vtop -u &ltuser-address>"
   commands to properly translate pages that are swapped out into their
   swap file and offset.  Without the patch, the swap file and offset 
   would not be displayed.
   (holzheu at linux.vnet.ibm.com)

 - Added new "list -[xd]" options to be used in conjunction with
   "list -s", which override the current default output format 
   with hexadecimal or decimal format for just the command instance.  
   Without the patch, it would require changing the default output 
   format with "hex" or "dec" prior to executing "list -s".
   (anderson at redhat.com)

 - Added new "net -[xd]" options to be used in conjunction with 
   "net -S", which override the current default output format
   with hexadecimal or decimal format for just the command instance.
   Without the patch, it would require changing the default output
   format with "hex" or "dec" prior to executing "net -S".  The new 
   flags may also be used with "foreach net -S".
   (anderson at redhat.com)

 - Added new "mach -[xd]" options to be used in conjunction with 
   "mach -c", which override the current default output format
   with hexadecimal or decimal format for just the command instance.
   Without the patch, it would require changing the default output
   format with "hex" or "dec" prior to executing "mach -c".
   (anderson at redhat.com)

 - If the value read from the cpu online, present, or possible masks
   contains a cpu bit value that is outside the architecture's maximum 
   NR_CPUS value, print a warning message during invocation.  Without
   the patch, a corrupt vmcore containing a bogus mask value could 
   quietly corrupt heap memory.
   (per.fransson.ml at gmail.com)
 
 - Add support to for reading dumpfiles compressed by LZO using
   makedumpfile version 1.4.4 or later.  This feature is disabled by
   default.  To enable this feature, build the crash utility in the 
   following manner:
   (1) Install the LZO libraries by using the host system's package
       manager or by directly downloading libraries from author's 
       website.  The packages required are:
         - lzo
         - lzo-minilzo
         - lzo-devel
       The author's website is: http://www.oberhumer.com/opensource/lzo
   (2) Create a CFLAGS.extra file and an LDFLAGS.extra file in top-level
       crash sources directory:
         - enter -DLZO in the CFLAGS.extra file
         - enter -llzo2 in the LDFLAGS.extra file.
   (3) Build crash with "make" as always.
   (d.hatayama at jp.fujitsu.com)

 - Fix for the included "trace" extension module.  Without the patch,
   if the module initialization sequence fails, a double-free in the
   module may lead to a subsequent malloc() segmentation violation
   in the crash session.
   (per.fransson.ml at gmail.com)

 - Incorporated the "ipcs" extension module written by Qiao Nuohan 
   as a built-in command.  The command displays the kernel's usage 
   of the System V shared memory, semaphore and message queue IPC
   facilities.  It differs from the original extension module by
   fixing a failure scenario if the current task is exiting, and
   adds a "-n pid|task" option, which displays the IPCS facilities
   with respect to the namespace of a given pid or task.
   (qiaonuohan at cn.fujitsu.com, anderson at redhat.com)

 - Fix for a gdb-7.3.1 regression that causes the line number capability
   to fail with certain ranges of x86 base kernel text addresses.
   Without the patch, the "dis -l <symbol>" or "sym <symbol>"
   commands would fail to show line number information for certain
   ranges of base kernel text addresses.
   (anderson at redhat.com)

 - Added a new "printm" command to the embedded gdb module.  It
   is currently only used by the "pstruct" extension module, but
   can be used to dump the type, size, offset, bitpos and bitsize
   values of an expression.
   (qiaonuohan at cn.fujitsu.com)

 - Added a new "runq -t" option that displays the timestamp information
   of each cpu's runqueue, which consists of either the rq.clock, the
   rq.most_recent_timestamp or rq.timestamp_last_tick value, whichever 
   applies.  Following each cpu timestamp is the last_run or timestamp 
   value of the active task on that cpu, whichever applies, along with 
   the task identification.
   (weijg.fnst at cn.fujitsu.com, anderson at redhat.com)

 - Fix for an initialization-time warning when running on a live system
   with the most recent version of the modprobe command, which no longer
   supports the -l and --type options.  The modprobe is used to detect
   whether the crash.ko memory driver is part of the distribution.  
   Without the patch, a warning message is issued that indicates
   "/sbin/modprobe: invalid option -- 'l'".  If the driver is built into
   the kernel, the message is harmless.  If the driver is not built into
   kernel, then the crash.ko (/dev/crash) driver would not be selected 
   as the live memory source.
   (anderson at redhat.com)