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[Launchpad Bug Tracker <1381999@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package crash - 7.0.8-1ubuntu1

---------------
crash (7.0.8-1ubuntu1) utopic; urgency=medium

  * FFe LP: #1381999.
    - 7.0.8 adds upstream support for new architectures
    - fixing ftbfs on arm64.
  * Merge with Debian; remaining changes:
    - Build for armhf, arm64, ppc64el.
    - Minor fixes for live autopkgtest.
    - debian/tests/live: Redirect gpg stderr to stdout, as that's the only
      known and expected stderr source.

crash (7.0.8-1) unstable; urgency=medium

  * Fix for the handling of 32-bit ELF xendump dumpfiles if the guest was
    configured with more than 4GB of memory.  Without the patch, the crash
    session may fail during initialization with the error message "crash:
    vmlinux and <dumpfile> do not match!".
  * Fix for file-handling errors when a compressed vmlinux.debug file is
    followed by a vmlinux file on the crash command line.  When the crash
    session ends, two errors will occur: (1) the vmlinux file will be deleted
    (2) the temporary uncompressed version of the vmlinux.debug file will
    remain in /var/tmp This problem also occurs in the highly unlikely case
    where a compressed vmlinux file is followed by a vmlinux.debug file on the
    command line, and the uncompressed temporary version of the vmlinux file
    is larger than the vmlinux.debug file.  In that case: (1) the
    vmlinux.debug file will be deleted (2) the temporary uncompressed version
    of the vmlinux file will remain in /var/tmp
  * Fix for the "search -t" option if the system has 2064 or more tasks.
    Without the patch, the command fails with a dump of the crash utility
    memory allocation statistics, ending with "search: cannot allocate any
    more memory!".
  * Fix for the "mod -S" command to find the debuginfo data for Red Hat
    "kpatch" modules.  Without the patch, the command would display "mod:
    cannot find or load object file for <kpatch-module> module".
  * Deprecated the "mount -f" option for Linux 3.13 and later kernels
    containing commit eee5cc2702929fd41cce28058dc6d6717f723f87, which removed
    the super_block.s_files list_head member and the open files list that it
    contained.  Without the patch, the command option fails with the error
    message "mount: invalid structure member offset: super_block_s_files"
  * If a compressed kdump is damaged/truncated such that the bitmap data in
    the dumpfile header is not contained within the file, attempts to analyze
    it with a vmlinux file, or using the "crash --osrelease" or "crash --log"
    options with just the vmcore, will result in the crash utility spinning
    forever, endlessly performing reads of 0 bytes from the file without
    recognizing the EOF condition.
  * Fix for an ARM64 compilation failure of the embedded gdb file
    "aarch-linux-nat.c" in the Fedora fc21 rawhide environment, which uses
    glibc-headers-2.19.90-24.fc21.
  * Document the reason behind the deprecation of the "mount -f" option for
    Linux 3.13 and later kernels if the option is attempted, and in the "help
    mount" output, similar to the deprecated "mount -d" option.
  * During initialization, reject useless ARM64 "(A)" absolute symbols that
    begin with "__crc_".  Without the patch, several thousand of them may be
    displayed by "sym -l" prior to the first kernel virtual address symbol.
  * When running against an ARM64 dumpfile created with the "snap.so"
    extension module, do not attempt to read the crash_notes.  Since the
    dumpfile was taken while running on a live system, the crash_notes, if
    configured into the kernel, would not contain valid data.  Without the
    patch, the message "WARNING: could not retrieve crash_notes" is displayed
    during session initialization.
  * Determine the various ARM64 kernel virtual address ranges using the
    kernel's VA_BITS value.  It currently is hardwired in the kernel to one of
    two values depending upon whether 4K or 64K pages are configured.
    However, there are plans to support 16K paqes, to make VA_BITS a
    configurable value, and to make the number of page-table levels
    configurable.  Towards that end, the crash utility has been changed to
    determine the VA_BITS value based upon known kernel virtual addresses, and
    to then calculate the relevant kernel virtual address ranges on that value
    instead of hardwiring them based upon the page size.
  * Enhancement to the "kmem -S" option for Linux 3.2 and later kernels
    configured with CONFIG_SLUB to display the address of each per-cpu
    kmem_cache_cpu address and the contents of its per-cpu partial list.
  * If an ARM or ARM64 dumpfile does not contain the register sets of the
    active tasks in the kernel's per-cpu crash_notes, there is an
    initialization-time warning message indicating "could not retrieve
    crash_notes".  It has been changed to a more meaningful warning message
    indicating "cannot retrieve registers for active tasks".
  * Implement support for ARM and ARM64 raw RAM dumpfiles.  One or more
    "ramdump" files may be entered on the crash command line in an ordered
    pair format consisting of the RAM dump filename and the starting physical
    address expressed in hexadecimal, connected with an ampersand:

    $ crash vmlinux ramdump@address [ramdump@address]

    A temporary ELF header will be created in /var/tmp, and the combination of
    the header and the ramdump file(s) will be handled like a normal ELF
    vmcore.  The ELF header will only exist during the crash session.  If
    desired, an optional "-o <filename>" may be entered to create a permanent
    ELF vmcore file from the ramdump file(s).
  * Fix for the "help -[nD]" ELF header translation to recognize the EM_ARM
    and EM_AARCH values as "e_machine" types, and ELFOSABI_LINUX as an
    "e_ident[EI_OSABI]" type.  Without the patch, the e_machine translation
    would show "40 (unsupported)" for 32-bit ARM, or "183 (unsupported)" on
    ARM64; and the ELFOSABI_LINUX type would be translated as "3 (?)".
  * Re-run a command in the history list by entering an "!" followed by the
    number identifying the command.  However, unlike the similar "r"
    pseudo-command, if the number is a command name in the user's PATH,
    maintain the current behavior and execute that command.
  * Fix to recognize that the live system "crash.ko" memory driver may be
    compressed and named "crash.ko.xz".  Without the patch, the driver is not
    recognized and loaded, and as a result the /dev/mem driver  and/or
    /proc/kcore will be tried as the live memory source.
  * On a live system during session initialization, delay the first read error
    message (typically when reading the "cpu_possible_mask") until it is
    confirmed that all of the following are true: (1) /dev/crash does not
    exist, and (2) /dev/mem is restricted via CONFIG_STRICT_DEVMEM, and (3)
    /proc/kcore cannot be read/accessed.  The "kernel may be configured with
    CONFIG_STRICT_DEVMEM" and the "trying /proc/kcore as an alternative"
    messages will still be displayed when appropriate.  The read error message
    be displayed only if all three live memory read options fail.
  * Fortify the validity verification of the data structures traversed by the
    "kmem [-sS]" options for kernels configured with CONFIG_SLUB.  Without the
    patch, the contents of several structure members are not validated, and
    may generate bogus or never-ending output, typically seen when running the
    commands on a "live dump" where the dumpfile was taken while the kernel
    was still running.  The patch aborts the relevant parts of per-kmem_cache
    output when invalid data is encountered or if an object list contains
    duplicate entries, and error messages have been enhanced to more
    accurately describe the issues encountered.
  * Implement support for the ppc64le PPC64 little-endian architecture.  Since
    this required a large number of patches to be applied to
    architecture-neutral files in the gdb-7.6 tree, the changes are only
    applied if the host build system is a ppc64le.
  * Fix for SMP active task register-gathering from "kvmdump" dumpfiles that
    were created with a cpu version id of 12 or greater that contain
    additional XSAVE related fields in their cpu device headers.  Without the
    patch, active tasks running on cpus above 0 may have truncated backtraces.
  * Maintain backwards-compatibility for "kvmdump" dumpfiles that were created
    by older development versions of KVM tools in which the cpu version id was
    12, but the cpu device headers did not contain the additional XSAVE
    related fields.
  * Address a "ps" command performance degradation that was introduced by a
    crash-7.0.4 patch which added per-thread task_struct.rss_stat page counts
    to the task's mm_struct.rss_stat page counts in order to show an
    accurate/synchronized RSS value.  Without the patch, the "ps" command
    performance would degrade as the number of tasks increased, most notably
    when there were thousands of tasks.
 -- Matthias Klose <doko@xxxxxxxxxx>   Thu, 16 Oct 2014 12:42:59 +0200

** Changed in: crash (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1381999

Title:
  FFe: crash-7.0.8, integrating ppc64le support, and improving
  arm64/arm32 support

Status in “crash” package in Ubuntu:
  Fix Released

Bug description:
  FFe: crash-7.0.8, integrating ppc64le support, and improving
  arm64/arm32 support, plus fixing the ftbfs on arm64 as seen in the
  test rebuild.

  upstream changes:
  http://people.redhat.com/~anderson/crash.changelog.html

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