Bug 458484

It's not worth the effort due to the constantly-shifting sands of the kernel.
Every so often the rawhide version will get updated.

  http://koji.fedoraproject.org/koji/buildinfo?buildID=47600

Hi.
Thanks for the quick response.
I can live with that solution, just installed the rpm from the given adress and now i can use this great tool to do post mortem analysis.

One more question:

doing "kmem -S" on kernel next-20080808 gives me the following error:

crash> kmem -S

kmem: invalid structure member offset: kmem_cache_objects
      FILE: memory.c  LINE: 13500  FUNCTION: dump_kmem_cache_slub()

[/usr/bin/crash] error trace: 8085195 => 809f946 => 80c0d82 => 813b9a0
CACHE    NAME                 OBJSIZE  ALLOCATED     TOTAL  SLABS  SSIZE

  813b9a0: OFFSET_verify+118
  80c0d82: dump_kmem_cache_slub+1033
  809f946: cmd_kmem+3196
  8085195: exec_command+265

kmem: invalid structure member offset: kmem_cache_objects
      FILE: memory.c  LINE: 13500  FUNCTION: dump_kmem_cache_slub()

Are you interested in this kind of kernel "progress" or is linux-next too volatile for you to look at?

Yeah, this is exactly the type of issue...

I don't work with upstream kernels much, and it looks like the
venerable old "kmem_cache.objects" structure member no longer exists,
and has been replaced somehow by two order-type members?:

        /* Allocation and freeing of slabs */
        struct kmem_cache_order_objects max;
        struct kmem_cache_order_objects min;

It's the first time I've seen this.  And it doesn't appear to be
a straight-forward fix for the crash utility.

Anyway, I'll get around to it eventually, typically when somebody forwards
me a sample vmlinux/vmcore pair to work with.

Dave

Fixed in upstream version 4.0-7.2:

http://people.redhat.com/anderson/crash.changelog.html#4_0_7_2

4.0-7.2  - Fix for initialization-time failure when running against 2.6.27
           x86_64 kernels, which indicate "crash: cannot resolve: end_pfn".
           The patch sets the new 2.6.27 x86_64 PAGE_OFFSET value, handles 
           the change in the x86_64 "_cpu_pda" variable declaration, and 
           distinguishes paravirtual "pv_ops" kernels from traditional xen
           kernels.  (oomichi.nec.co.jp, anderson)

         - When an improper structure member offset or structure size is
           attempted, a partial crash backtrace is displayed in the ensuing 
           error message.  However, if the crash binary was stripped, it would
           show "/usr/bin/nm: /tmp/crash: no symbols" instead of the address
           and name of the symbol.  This has been fixed to work with stripped
           binaries if the crash symbol can be found in the crash binary; if
           the crash symbol cannot be found, such as for static text symbols,
           it will just display its address and "(undetermined)".  
           (bwalle)

         - crash.spec file addition: Requires: binutils 
           (anderson)

         - Fix for LKCD kerntypes debuginfo files to use "node_states" when 
           "node_online_map" is not in use.  (cpw)

         - Implement support for s390/s390x CONFIG_SPARSEMEM kernels.  Without
           the patch, crash sessions would fail during initialization with the
           error message: "crash: CONFIG_SPARSEMEM kernels not supported for 
           this architecture".  (holzheu.ibm.com)

         - Fix for "kmem -[sS]" when running against 2.6.27 CONFIG_SLUB kernels,
           in which the kmem_cache.objects and .order members were replaced by 
           a kmem_cache_order_objects structure.  Without the patch, the command
           would fail with the error message: "kmem: "invalid structure member 
           offset: kmem_cache_objects".  The fix also recognizes and supports
           potentially variable slab sizes as introduced by the kernel patch.
           (anderson)

         - Increased the maximum number of SIAL commands from 100 to 200.
           (cpw)

         - 4.0-7.1 to 4.0-7.2 incremental patch

           (9/15/08)
  

Information for build crash-4.0-8.7.2.fc11
http://koji.fedoraproject.org/koji/buildinfo?buildID=84905

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