Re: disabling NMI events for kdb 2.1

["arun4linux" <arun4linux@indiatimes.com>]

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Hello,

downloded the kernel source from kernel.org and applied kdb patch. (version linux-2.4.18.tar.gz, kdb-v2.1-2.4.18-common-1 and kdb-v2.1-2.4.18-i386-1
No problem with that.
I recompiled the kernel after enabling kdb in kernel hacking.
I have installed the newly compiled kernel.

My default run level was 5 (X windows).
I had problem in bringing up X Windows.
I changed the run level to 3.
system cam up well. I could press 'pause' and enter into kdb.
I could execute few commands. But as soon as I try to execute "go" command, system getting hanged. After that nothing works, keyboard getting locked.

Also can we see the C Source in kdb?

Have a nice time.
Arun



"Mihai RUSU" wrote:



Hi

I am using kdb 2.1 to hunt down a bug. This bug shows up after like 2 days
of uptime. Problem is that also on this system I get a unkown reason NMI
like:

Uhhuh. NMI received for unknown reason 21.
Dazed and confused, but trying to continue
Do you have a strange power saving mode enabled?

When it happens it enters kdb mode, thus the system "freezes".
Because I cannot be there to issue a "go" everytime it happens (line 4 am
:) ), it makes very hard to keep kdb enabled kernel running to wait for
the hunted bug to happen.

Is there a possibility to disable going to kdb mode when a "unkown reason"
NMI is received ? I could not find any usefull info in the kdb docs.

PS: this is the output from kdb on serial console when it receives the
NMI:
Entering kdb (current=0xcf142000, pid 31088) on processor 0 due to NonMaskable 3
eax = 0x00000051 ebx = 0x0804ebb0 ecx = 0x40017000 edx = 0x00000000
esi = 0x00000042 edi = 0x0804ebf8 esp = 0xbfffe094 eip = 0x08048fe3
ebp = 0xbfffe0ac xss = 0x0000002b xcs = 0x00000023 eflags = 0x00000202
xds = 0x0000002b xes = 0x0000002b origeax = 0x00000051 ®s = 0xcf143fc4

Thanks

----------------------------
Mihai RUSU


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