[Crash-utility] [ANNOUNCE] crash version 6.0.3 is available

[Dave Anderson]

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

Changelog:

 - Fix to gdb-7.3.1/bfd/bfdio.c to properly zero out a complete struct
   stat with a corrected memset argument; caught when compiling with 
   the Clang Static Analyzer.
   (idoenmez at suse.de)

 - Fix for the SIAL extension module to remove a call to sial_free() 
   for an uninitialised variable that can result in a segmentation 
   violation when unloading a sial script.
   (lmcilroy at redhat.com)

 - Fix for the "runq" command for kernels that are configured with 
   CONFIG_FAIR_GROUP_SCHED.  Without the patch, tasks contained within
   the task-group of a cpu's currently-running task may not be displayed. 
   (d.hatayama at jp.fujitsu.com, anderson at redhat.com)

 - Implemented support for the analysis of 32-bit PPC ELF kdump vmcores.
   (suzuki at in.ibm.com)

 - Implemented the capability of building a PPC crash binary on a PPC64
   host, which can be done by entering "make target=PPC".  After the 
   initial build is complete, subsequent builds can be done by entering 
   "make" alone.
   (suzuki at in.ibm.com, anderson at redhat.com)

 - Determine the PPC page size from the kdump PAGESIZE vmcoreinfo data.
   (suzuki at in.ibm.com, anderson at redhat.com)

 - Fix for the "kmem -[sS]", "kmem -[fF]" and "kmem <address>" 
   options in 3.2 kernels.  Without the patch, the commands fail with 
   the error "kmem: invalid structure member offset: page_lru".
   (anderson at redhat.com)

 - Addition of a set of dumpfile read diagnostic debug statements.  They
   are primarily of use when dealing with kdump invocation or runtime
   read failures (ELF kdumps or compressed kdumps), and can serve to 
   help pinpoint the problem as a faulty/corrupted dumpfile vs. a crash
   utility bug.  Some statements are seen when invoking crash with "-d1",
   more with "-d4", and all of them with "-d8".  During runtime, debug
   statements may be seen by entering "set debug <level>".
   (dmair at suse.com, anderson at redhat.com)     

 - Fix for X86 kernels that have CONFIG_X86_32, CONFIG_DISCONTIGMEM, 
   CONFIG_DISCONTIGMEM_MANUAL and CONFIG_NUMA all configured.  Without
   the patch, the VM subsystem fails to initialize properly because the
   pgdat structures are allocated by the remap allocator.
   (ptesarik at suse.cz)

 - Fix for the "vtop" command on large NUMA X86 kernels where a node's
   starting physical address is larger than 32-bits.  Without the patch,
   the page struct contents of a virtual address  may not be displayed.
   Associated with that fix, the "kmem -n" line that displays a node's 
   MEM_MAP, START_PADDR and START_MAPNR values has been adjusted to more
   properly handle large physical addresses.
   (dmair at suse.com)     

 - Update for the ARM architecture to recognize a recent change of
   its vmlinux section name from ".init" to ".init.text".  Without the
   patch, a warning message indicating "crash: cannot determine text 
   init space" is displayed during initialization.
   (rabin at rab.in)

 - Significant speed increase of the "kmem -p" command, especially on
   large-memory systems.
   (qiaonuohan at cn.fujitsu.com)

 - Implemented new "irq -a" and "irq -s" options.  The "irq -a" option
   displays the cpu affinity for in-use IRQs.  The "irq -s" option 
   displays per-cpu IRQ stats in a similar manner to /proc/interrupts
   for all cpus.  To show a limited set of per-cpu IRQ stats, there is 
   an associated "-c" option that limits the cpus shown, which can be 
   expressed as "-c 1,3,5", "-c 1-3", or "-c 1,3,5-7,10".  The options
   are currently restricted to X86, X86_64, ARM, PPC64 and IA64.
   (zhangyanfei at cn.fujitsu.com, anderson at redhat.com, 
    per.xx.fransson at stericsson.com)

 - Removal of a redundant read of the kernel's __per_cpu_offset pointers
   in the ARM architecture's arm_get_crash_notes() function.
   (per.xx.fransson at stericsson.com)

 - Fix for an ARM architecture segmentation violation because of a stack
   overflow due to recursion in the page table translation code.  This
   was seen when analyzing a dumpfile where the page tables had been 
   corrupted.
   (rabin at rab.in)

 - Fix for the the "FREE HIGH" tally in the X86 "kmem -i" display.
   Without the patch, the PAGES, TOTAL and PERCENTAGE values would
   always show zero values.
   (anderson at redhat.com)

 - Fix for the "kmem -n" output display for 32-bit architectures that
   are configured with CONFIG_SPARSEMEM.  Without the patch, the values
   under the CODED_MEM_MAP, MEM_MAP and PFN columns are all shifted to 
   the left.
   (anderson at redhat.com)

 - Cleanup of several SIAL extension module files to address bison 2.5
   and gcc 4.4.3 compile-time warnings. 
   (lchouinard at s2sys.com)

 - Fix for "net -[sS]" command options on the ARM architecture.  Without
   the patch, invalid data would be displayed because the calculation of
   the socket address was off by 4 bytes.
   (Jan.Karlsson at sonyericsson.com, anderson at redhat.com)

 - Fix for the ARM "bt" command to allow the core kernel unwind tables
   to be used in cases where the module unwind tables are inaccessible.
   (rabin at rab.in)
 
 - Implementation of a new "dev -d" option that displays disk device
   I/O statistics.  For each disk device, its major number, gendisk and
   request_queue addresses are displayed along with the total number of
   allocated I/O requests that are in-progress.  The total I/O requests
   are then split out into synchronous vs. asynchronous counts (or reads
   vs. writes in older kernels), and the number that are in-flight in
   the device driver.
   (wency at cn.fujitsu.com)

 - Update for 3.1.x and later kernels configured with CONFIG_SLAB, which
   have replaced the kmem_cache.nodelists[] array with a pointer to an 
   outside array.  Without the patch, the crash session fails during 
   invocation with the error "crash: zero-size memory allocation!".
   (bob.montgomery at hp.com, anderson at redhat.com)

 - Implemented support for the analysis of 32-bit PPC compressed kdump
   vmcores.
   (suzuki at in.ibm.com)

 - Prevent the "runq" command from dumping an unending loop of tasks if 
   the CFS runqueue has been corrupted.  If the output of a cpu's 
   runqueue would display a duplicate task, the output will stop with
   the message "WARNING: duplicate CFS runqueue node: task <address>".
   (dmair at suse.com)

 - Repurposed/renamed the rarely-used and rarely-needed "mod -r" option 
   to "mod -R".  The option is used to reinitialize the module data; all
   currently-loaded symbolic and debugging data is deleted, and the 
   installed module list will be updated (live systems only).
   (anderson at redhat.com)

 - Implemented a new "mod -r" option, which will pass the "-readnow" 
   flag to the embedded gdb module, which will override the two-stage 
   strategy that it uses for reading symbol tables from module object 
   files.  If the crash session was invoked with the "--readnow" flag,
   then the same override will occur automatically.  It should be noted
   that doing will increase the virtual and resident memory set size.
   (anderson at redhat.com)

 - Performance increase for the "kmem -s <address>" option on 
   kernels configured with CONFIG_SLAB, most notably on kernels
   whose kmem_cache.array[NR_CPUS] array is several pages in size.
   (qiaonuohan at cn.fujitsu.com)

 - Require that the "<slabname>" argument to "kmem -s <slabname>" 
   be escaped with a '\' character in two situations:
    (1) in the highly-unlikely case of a kmem_cache slab named "list",
        to prevent the ambiguity with the "kmem -s list" command option.
    (2) if the first character of the <slabname> actually is a '\' 
        character.
   (anderson at redhat.com)