Re: [Crash-utility] Fix fatal problems in PPC
----- Original Message -----
Hello Dave,
I'm trying to use crash configured with PPC on linux-2.6.27 powerpc.
And when crash started with /dev/mem, I found some problems and fixed them.
I'm afraid that PPC32 is now not maintained for long time, most people use PPC64
only?
I don't know true reason but if possible, please check attached patch set.
Correct -- there is no "PPC architecture maintainer" w/respect to the crash
utility, and there have been very few architecture-specific patches for 32-bit
ppc in recent years.
Report of problems which I met as below:
[problem 1] Display type mismatch WARNING
WARNING: machine type mismatch:
crash utility: PPC
vmlinux: (unknown)
-> Simply lacking of verification, remove WARNING with 0001
[problem 2] Display vmalloc fault WARNING
WARNING: cannot access vmalloc'd module memory
-> PTE index was wrong, fix with 0002
[problem 3] Repeat "invalid task address in pid_hash:" 500 times
crash: invalid task address in pid_hash: c8818450
-> Alignment check was too old, fix with 0003
[problem 4] bt command is always SEGV while accessing stack frame
-> Similar to problem 3, fix with 0004
OK, good -- these 4 patches are queued for crash-6.0.0.
I continue to test the basic command regressions or
update PPC implementation by learning from PPC64.
Great! I now designate you as the PPC maintainer!
Thanks,
Dave