[Crash-utility] snap crash plugin on RHEL 4

[Adrien Kunysz]

Dear crash-utility list,

I played a bit with snap on RHEL 4 and besides the fact it doesn't build out of 
the box (trivial Makefile compatibility problem), it seems it doesn't really 
dump a full core properly (at least on the system I tested).

Since this is not really something that is supposed to be supported I am posting 
this here rather than opening a Bugzilla. I haven't attempted to repro on other 
distros.

# crash
crash> extend snap-rhel4-x86_64/snap.so
./snap-rhel4-x86_64/snap.so: shared object loaded
crash> snap mycore
mycore: [100%]
-rw-r--r--  1 root root 4160684848 Sep  3 09:37 mycore
crash> quit
# free
              total       used       free     shared    buffers     cached
Mem:      16319168    8065516    8253652          0     133060    6231128
-/+ buffers/cache:    1701328   14617840
Swap:      2097144          0    2097144
# uname -a
Linux *** 2.6.9-89.ELsmp #1 SMP Mon Apr 20 10:33:05 EDT 2009 x86_64 x86_64 
x86_64 GNU/Linux
# crash /usr/lib/debug/lib/modules/2.6.9-89.ELsmp/vmlinux mycore
[...]
crash: read error: kernel virtual address: 1020009d024  type: "tss_struct ist array"

Is that expected? Any idea what's going on?

Thanks,
Adrien