Re: [Crash-utility] crash bug on 2.6.27.8
On Mon, Feb 9, 2009 at 11:51 PM, Dave Anderson <anderson(a)redhat.com> wrote:
----- "Jun Koi" <junkoi2004(a)gmail.com> wrote:
> Hi,
>
> When using the latest crash on 2.6.27.14 to analyze live memory
> (running crash without any option), I got a bug like below. How can I
> fix that?
>
> (A similar problem is also seen on 2.6.27.8)
>
> Thanks,
> Jun
The "read error" indications are most likely due to your kernel
being configured with CONFIG_STRICT_DEVMEM, which restricts
/dev/mem access to the first 256 pages of physical memory,
which makes it useless for the crash utility.
Thanks a lot for the information - I can fix the kernel here.
But perhaps it is better to give some hints when we have such a error
report, so users know that they should turn off the above
configuration? I am sure that many people will have this problem, as
the option may be ON by default.
Thanks,
Jun