"SLC5X: development/debuggers: crash

crash - Kernel crash and live system analysis utility

Website: http://people.redhat.com/anderson
License: GPLv3
Vendor: Red Hat, Inc.
The core analysis suite is a self-contained tool that can be used to
investigate either live systems, kernel core dumps created from the
netdump, diskdump and kdump packages from Red Hat Linux, the mcore kernel patch
offered by Mission Critical Linux, or the LKCD kernel patch.


crash-5.1.8-3.el5_11.src [23.3 MiB] Changelog by Dave Anderson (2015-02-17):
- Fix for kernel CVE-2014-9322
  Resolves: rhbz#1192396
crash-5.1.8-2.el5_9.src [23.3 MiB] Changelog by Dave Anderson (2012-12-04):
- Fix to handle xen dom0 dumpfiles created with "makedumpfile -d1" on very
  large systems, where the ELF vmcore may be mistakenly determined to be
  an old-style netdump vmcore.  
  Resolves: rhbz#876046
crash-5.1.8-1.el5.src [23.3 MiB] Changelog by Dave Anderson (2011-10-05):
- Rebase to upstream version 5.1.8.
  Resolves: rhbz#715072

- Fix for the x86_64 "bt" command if the shutdown NMI is issued to a
  32-bit task that has executed a "sysenter" instruction and the RSP
  still contains the zero value loaded from the MSR_IA32_SYSENTER_ESP
  register.  The backtrace issued a warning message indicating 
  "WARNING: possibly bogus exception frame", and was unable to make a 
  transition from the NMI exception stack back to the process stack. 
  Resolves: rhbz#676408

- Fix for the x86 "bt" command for several backtraces of non-crashing
  active tasks that fail with "bt: cannot resolve stack trace" errors
  due to the failure to properly transition from the shutdown NMI stack 
  back to the process stack.
  Resolves: rhbz#713050

- Fix to more correctly determine the KVM I/O hole size and location.
  The I/O hole size to this point in time is either 1GB or 512MB, but
  its setting is hardwired into the Qemu code that was used to create 
  the dumpfile.  The dumpfile is a "savevm" file that is designed to be
  used for guest migration, and since inter-version save/load is not 
  supported, the I/O hole information does not have to be encoded into the
  dumpfile.  Without the patch, the I/O hole for dumpfiles created by 
  older Qemu version was not being set to 1GB, so if the KVM guest was 
  configured with more than 3GB of memory, the crash session would 
  typically display numerous "read error" messages during session 
  Resolves: rhbz#715070

- Fix for KVM dumpfiles from guests that were provisioned with more
  than 3.5GB of RAM.  KVM virtual systems contain an I/O hole in the
  physical memory region from 0xe0000000 to 0x100000000 (3.5GB to 4GB).
  If a guest is provisioned with more than 3.5GB of RAM, then the
  memory above 3.5GB is "pushed up" to start at 0x100000000 (4GB).
  But the "ram" device headers in the KVM dumpfiles do not reflect
  that, and so without the patch, numerous error messages would be
  displayed during invocation, and in all probability, the session
  would fail.
  Resolves: rhbz#716327
crash-4.1.2-8.el5.src [17.2 MiB] Changelog by Dave Anderson (2010-12-03):
- Fix for potential segmentation violation in glibc malloc/free when 
  running "kmem -s" on a large, active, live system.
  Resolves: rhbz#659593
crash-4.1.2-4.el5_5.1.src [17.1 MiB] Changelog by Dave Anderson (2010-06-09):
- Fix for backtrace of x86 NMI-interrupted task with a user exception frame
  from a syscall exception that had not called the requested system call 
  Fix for backtrace when a newly-forked x86 task's resumption EIP address 
  value is set to the "ret_from_fork" entry point by copy_thread().
  Resolves: rhbz#601089
- Fix for segmentation violation with the "mach -m" command option on x86 
  or x86_64 systems whose BIOS-provided e820 map contains EFI-related memory
  type value that has not been mapped to an E820 type.
  Resolves: rhbz#601082
- Fix for the "kmem -s list" command option to prevent it from attempting
  to gather a slab cache name string from the "cache_chain" list_head.
  Resolves: rhbz#601084
- Change the ppc64 cpu count displayed by the initial system banner
  and by the "sys" and "mach" commands to be the number of cpus online.
  Resolves: rhbz#601088
- Fix for backtrace of an x86_64 NMI-interrupted task which had not 
  swapped its RSP from the user-space stack to the kernel stack.
  Resolves: rhbz#601081
crash-4.1.2-4.el5.src [17.1 MiB] Changelog by Dave Anderson (2010-02-10):
- Fix for very large xendump core files whose ELF sections are located
  beyond a file offset of 4GB.
- Resolves: rhbz#561767
crash-4.0-8.9.1.el5.src [17.2 MiB] Changelog by Dave Anderson (2009-06-12):
- Fix for running "foreach bt" on a live system, where a backtrace that
  is attempted on a task that no longer exists may cause a segmentation
  violation due to the use of stale/invalid kernel stack pointer.
- Resolves: rhbz#504796
crash-4.0-7.2.3.el5_3.1.src [17.2 MiB] Changelog by Dave Anderson (2009-01-13):
Fix for a "bt" command segmentation violation by correctly
  handling the transition from the IRQ stack back to the process
  stack running when running against a Xen kernel.
- Resolves: rhbz#479810
crash-4.0-7.2.3.src [17.2 MiB] Changelog by Dave Anderson (2008-09-26):
Fix for the incomplete resolution for the "search -k" option when 
  run on RHEL5 ia64 CONFIG_SPARSEMEM kernels.  The initial fix
  addressed the segmentation violation, but on certain physical 
  memory configurations, it would prematurely bail out when making
  the transition from the kernel mapped region to the vmalloc region.
- Resolves: rhbz#458417

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