Re: [Crash-utility] Broken vtop on kernel 2.6.20?
On May 30, 2007 12:06:51 pm Dave Anderson wrote:
I forgot about this anomoly because Red Hat RHEL kernels outlaw the
use of
/dev/mem for anything above the first 256 pages of physical memory (for
security purposes). And for that reason, RHEL kernels contain the
/dev/crash driver for live memory access, which is unrestricted.
Dave,
thank you very much for your explanations. I have compiled a modified version
of 'crash.ko' on 2.6.20 and now 'ps -a' works fine indeed. It is
interesting
that earlier versions of Ubuntu (e.g. with kernel 2.6.15) did not let me
use 'crash' without /dev/crash at all - so I had to install crash.ko. Then
after upgrade to Ubuntu/feisty I have found that everything works fine
with /dev/mem...until I tried the new 'ps -a' command.
Regards,
Alex
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Alexandre Sidorenko email: alexs(a)hplinux.canada.hp.com
Global Solutions Engineering: Unix Networking
Hewlett-Packard (Canada)
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