[Crash-utility] crash on ppc docs / pointers

[Bryn M. Reeves]

Dave Anderson wrote:
> and looking around that "bl" target, there's the target function 
> address of ".__kmalloc" a few words after it:
> 
> crash> rd -s 0xd000000000199858 20 d000000000199858:
> 3d82fffe398ce448 f8410028e96c0020 d000000000199868:
> e84c00287d6903a6 4e80042000000000 d000000000199878:  .__kmalloc
> PPC64_CACHES+24336 d000000000199888:  3d82fffe398ce478
> f8410028e96c0020 d000000000199898:  e84c00287d6903a6
> 4e80042000000000 d0000000001998a8:  .memset
> PPC64_CACHES+24336 d0000000001998b8:  3d82fffe398ce4a8
> f8410028e96c0020 d0000000001998c8:  e84c00287d6903a6
> 4e80042000000000 d0000000001998d8:  .memcpy
> PPC64_CACHES+24336 d0000000001998e8:  3d82fffe398ce4d8
> f8410028e96c0020 crash>
> 
> So I presume if you look at the data around 0xd000000000bd4120,
> you'll most likely see ".kfree".

Ah-ha! Thanks Dave! I wondered if it was something like this and did
poke around a bit in the words following 0xd000000000bd4120 (stupidly
with dis rather than rd which was getting a bit confused and only
outputting one word at a time as I manually advanced the address..).

I didn't go quite far enough to see this:

crash> rd 0xd000000000bd4120 16
d000000000bd4120:  3d82ffff398cd3a0 f8410028e96c0020   =...9....A.(.l.
d000000000bd4130:  e84c00287d6903a6 4e80042000000000   .L.(}i..N.. ....
d000000000bd4140:  c0000000000ed0b4 [...]

crash> sym .kfree
c0000000000ed0b4 (T) .kfree

Thanks again.

Cheers,
Bryn.