[Crash-utility] crash: cannot resolve "init_task_union"

[Sachin P. Sant]

Hi Dave,

I am facing some problem while running crash on a live system. The machine
is a uniprocessor machine [ Arch is powerpc ]

Crash fails with error crash: cannot resolve "init_task_union"

Some debugging shows that crash fails to read idle tasks related
information from per cpu runqueues data structure. The per cpu 
runqueue dosen't seems to be having proper values.

Breakpoint 2, get_idle_threads (tasklist=0x106bd3f0, nr_cpus=1) at task.c:5189
5189            BZERO(tasklist, sizeof(ulong) * NR_CPUS);
(gdb) n
....
....
(gdb) n
5206                            tasklist[i] = ULONG(runqbuf + OFFSET(runqueue_idle));
(gdb) n
5208                            if (IS_KVADDR(tasklist[i]))
(gdb) print /x tasklist[i]
$1 = 0xd00000000
(gdb)     

I am attaching crash -d4 output here.


Thanks
-Sachin

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