[Crash-utility] [ANNOUNCE] crash version 7.1.9 is available

[Dave Anderson]

Download from: http://people.redhat.com/anderson
                 or
               https://github.com/crash-utility/crash/releases

The github master branch serves as a development branch that will contain 
all patches that are queued for the next release:

  $ git clone git://github.com/crash-utility/crash.git


Changelog:

 - Fixes to address three gcc-7.0.1 compiler warnings that are generated
   when building with "make warn".  The warning types are "[-Wnonnull]" 
   in filesys.c, and "[-Wformat-overflow=]" in kernel.c and cmdline.c.
   (anderson at redhat.com)

 - Fix for the PPC64 "mach -o" option to update the OPAL console buffer
   size from 256K to 1MB, based upon the latest skiboot firmware source.
   (ankit at linux.vnet.ibm.com)
 
 - Fix for the "mod -[sS]" option to prevent the erroneous reassignment
   of one or more symbol values of a kernel module.  Without the patch,
   when loading a kernel module, a message may indicate "mod: <module>:
   last symbol: <symbol> is not _MODULE_END_<module>?" may be displayed,
   and one or more symbols may be reassigned an incorrect symbol value.
   If none of the erroneous symbol value reassignments are beyond the
   end of the module's address space, then there will be no message.
   (anderson at redhat.com)

 - Linux 4.10 commit 401721ecd1dcb0a428aa5d6832ee05ffbdbffbbe finally
   exports the x86_64 "phys_base" value in the VMCOREINFO note, so 
   utilize it whenever it exists.
   (anderson at redhat.com)

 - Implemented a new "log -a" option that dumps the audit logs remaining
   in kernel audit buffers that have not been copied out to the 
   user-space audit daemon.
   (d.hatayama at jp.fujitsu.com)

 - Fix for the "kmem <address>" option and the "search" command 
   in x86_64 kernels that contain, or have backports of, kernel commit 
   7c1da8d0d046174a4188b5729d7579abf3d29427, titled "crypto: sha - SHA1
   transform x86_64 AVX2", which introduced an "_end" text symbol.  
   Without the patch, if a base kernel symbol address that is larger 
   than the "_end" text symbol is passed to "kmem <address>", its 
   symbol/filename information will not be displayed.  Also, when the 
   "search" command scans the __START_KERNEL_map region that contains 
   kernel text and static data, the search will be truncated to stop at
   the "_end" text symbol address.
   (anderson at redhat.com)

 - Enhancement for the determination of the ARM64 "kimage_voffset" value 
   in Linux 4.6 and later kernels if an ELF format dumpfile does not
   contain its value in a VMCOREINFO note, or when running against
   live systems using /dev/mem, /proc/kcore, or an older version of
   /dev/crash.
   (liyueyi at live.com)

 - Optimization of the "kmem -f <address>" and "kmem <r;address>" options
   to signficantly reduce the amount of time to complete the buddy
   allocator free-list scan for the target address.  On very large 
   memory systems, the patch may reduce the time spent by several orders
   of magnitude.
   (anderson at redhat.com)

 - Fix for a compilation error if glibc-2.25 or later has been installed
   on the host build machine.  Without the patch, the build fails with 
   the error message "amd64-linux-nat.c:496:1: error: conflicting types
   for 'ps_get_thread_area'".
   (anderson at redhat.com)
 
 - Fix for the "list -[hH]" options if a list_head.next pointer is 
   encountered that contains an invalid NULL pointer.  Without the 
   patch, the "list -[hH]" options would complete/continue as if the 
   NULL were a legitimate end-of-list indicator, and no error would be
   reported.
   (rabin.vincent at axis.com)

 - Provide basic Huge Page usage as part of "kmem -i" output, showing
   the total amount of memory allocated for huge pages, and the amount
   of the total that is free.
   (atomlin at redhat.com)

 - Fix for the determination of the x86_64 "phys_base" value when it is
   not passed in the VMCOREINFO data of ELF vmcores.  Without the patch,
   it is possible that the base address of the vmalloc region is unknown
   and initialized to an incorrect default address during the very early 
   stages of initialization, which causes the parsing of the PT_LOAD
   segments for the START_KERNEL_map region to fail.
   (anderson at redhat.com)

 - Fix for the "dis" command to detect duplicate symbols in the case
   of a "symbol+offset" argument where the duplicates are contiguous 
   in the symbol list.  In addition, reject "symbol+offset" arguments
   if the resultant address goes beyond the end of the function.
   (anderson at redhat.com)

 - Fix for the "set scope" option if the kernel was configured with
   CONFIG_RANDOMIZE_BASE.  Without the patch, the command fails with
   the message "set: gdb cannot find text block for address: <symbol>".
   This also affects extension modules that call gdb_set_crash_scope()
   when running with KASLR kernels.
   (anderson at redhat.com)

 - Fix for the extensions/trace.c extension module to account for 
   Linux 4.7 kernel commit 9b94a8fba501f38368aef6ac1b30e7335252a220,
   which changed the ring_buffer_per_cpu.nr_pages member from an int
   to a long.  Without the patch, the trace.so extension module fails 
   to load on big-endian machines, indicating "extend: Num of pages 
   is less than 0".
   (feij.fnst at cn.fujitsu.com)

 - Fix for the extensions/trace.c extension module when running on
   the ppc64 architecture.  Without the patch, the trace.so extension
   module fails to load, indicating "extend: invalid text address: 
   ring_buffer_read".  On the ppc64 architecture, the text symbol
   is ".ring_buffer_read".
   (anderson at redhat.com)

 - Fix for the ARM64 "bt" command.  Without the patch, the backtrace of
   a non-panicking active task generates a segmentation violation when
   analyzing Android 4.4-based dumpfiles.
   (zhizhouzhang at asrmicro.com)