[Crash-utility] "invalid structure member offset: task_struct_parent" on x86_64 rawhide

[Dave Anderson]

Jeff Layton wrote:
> Looks like we might have gotten bitten by some upstream changes
> again...
> 
> When I run crash on a recent rawhide x86_64 kernel, I seem to be
> getting this error:
> 
> crash: invalid structure member offset: task_struct_parent
>        FILE: task.c  LINE: 2163  FUNCTION: store_context()
> 
> [/usr/bin/crash] error trace: 49150a => 495bb8 => 4963be => 4fc1bc
> /usr/bin/nm: /usr/bin/crash: no symbols
> /usr/bin/nm: /usr/bin/crash: no symbols
> /usr/bin/nm: /usr/bin/crash: no symbols
> /usr/bin/nm: /usr/bin/crash: no symbols
> 
> Relevant package versions:
> 
> crash-4.0-6.2.x86_64
> kernel-2.6.25-0.185.rc7.git6.fc9.x86_64
> 
> ...machine is a x86_64 FV xen guest. Any thoughts?
> 
> Thanks,

Hmmm.  The task_struct.parent member still exists upstream with
the same name, shown here after a fresh git pull:

         /*
          * pointers to (original) parent process, youngest child, younger sibling,
          * older sibling, respectively.  (p->father can be replaced with
          * p->parent->pid)
          */
         struct task_struct *real_parent; /* real parent process (when being debugged) */
         struct task_struct *parent;     /* parent process */

If you run "gdb vmlinux" and then do a "ptype struct task_struct", does
it not show the parent member?

Dave