- Fix for a potential session initialization failure when running against 2.6.30 or later x86_64 kernel dumpfiles whose pages have been filtered by the the makedumpfile facility. Without the patch, the session may fail with the error message "crash: page excluded: kernel virtual address: <address> type: cpu number (per_cpu)", but will initialize OK if the "--zero_excluded" command line option is used. (anderson@xxxxxxxxxx) - Added "lsmod" as a built-in alias for the "mod" command. (anderson@xxxxxxxxxx) - Added a defensive mechanism to handle corrupt Elf32_Nhdr/Elf64_Nhdr structures in an ELF vmcore. The fix no longer presumes that all Elf32_Nhdr/Elf64_Nhdr structure contents are legitimate, and if an invalid Elf32_Nhdr or Elf64_Nhdr structure is encountered, it will be ignored and a warning message will be displayed showing the structure contents, and the crash session will continue on. Without the patch, it was possible that an invalid n_namesz or n_descsz value could cause a segmentation violation when attempting to read the bogus note contents. (anderson@xxxxxxxxxx) - Fix for "mach -c" command option on 2.6.30 and later x86_64 kernels in which the per-cpu array x8664_pda data structures were replaced with per-cpu variables. Without the patch, the command displays just the boot cpu's cpuinfo data structure and then fails with the error message: "mach: invalid structure name: x8664_pda". (anderson@xxxxxxxxxx) - Fix to properly set the DEBUG exception stack size and stack base address on 2.6.18 and later x86_64 kernels. Without the patch, the DEBUG exception stack was presumed to be the same size as all of the other exception stacks, so in the extremely rare occurrance that a kernel crash started while running on a per-cpu DEBUG stack, the backtrace code would not recognize it as such, and would either start the trace using stale starting stack hooks, typically from "schedule" while running on the process stack, or the backtrace attempt would fail with the error message "bt: cannot transition from exception stack to current process stack". (anderson@xxxxxxxxxx) - Related to the above, when the x86_64 "bt" is displaying a trace segment from one of the five exception stacks, change the output from showing just "--- <exception stack> ..." to showing which exception stack it's working from, for example, "--- <NMI exception stack> ---" or "--- <DEBUG exception stack> ---", etc. (anderson@xxxxxxxxxx) - Fix for a session initialization failure when running against 2.6.30 or later x86_64 kernels if the number of possible cpus equals the kernel's configured NR_CPUS. Without the patch, the session fails with the error message "crash: invalid kernel virtual address: cc08 type: cpu number (per_cpu)". (bob.montgomery@xxxxxx) - Preparations in the top-level source code for the integration of gbd-7.0. The current embedded version remains gdb-6.1. (anderson@xxxxxxxxxx) Download from: http://people.redhat.com/anderson -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
