Re: 2.6.20-rc5: cp 18gb 18gb.2 = OOM killer, reproducible just like 2.16.19.2

Justin Piszcz
2007-01-25T09:08:39Z

On Thu, 25 Jan 2007, Pavel Machek wrote:

> Hi!
>
> > > Is it highmem-related? Can you try it with mem=256M?
> >
> > Bad idea, the kernel crashes & burns when I use mem=256, I had to boot
> > 2.6.20-rc5-6 single to get back into my machine, very nasty. Remember I
> > use an onboard graphics controller that has 128MB of RAM allocated to it
> > and I believe the ICH8 chipset also uses some memory, in any event mem=256
> > causes the machine to lockup before it can even get to the boot/init
> > processes, the two leds on the keyboard were blinking, caps lock and
> > scroll lock and I saw no console at all!
>
> Okay, so try mem=700M or disable CONFIG_HIGHMEM or something.
> Pavel
> --
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I forgot to remove the mem=700M with PREEMPT off and this is what I saw
this morning:

[18005.261875] Killed process 4768 (screen)
[18005.262343] Out of memory: kill process 4793 (screen) score 385 or a
child
[18005.262350] Killed process 4793 (screen)
[18005.378536] Out of memory: kill process 4825 (screen) score 385 or a
child
[18005.378542] Killed process 4825 (screen)
[18005.378547] Out of memory: kill process 4825 (screen) score 385 or a
child
[18005.378553] Killed process 4825 (screen)
[18005.413072] Out of memory: kill process 4875 (screen) score 385 or a
child
[18005.413079] Killed process 4875 (screen)
[18005.423735] Out of memory: kill process 4970 (screen) score 385 or a
child
[18005.423742] Killed process 4970 (screen)
[18005.431391] Out of memory: kill process 21365 (xfs_fsr) score 286 or a
child
[18005.431398] Killed process 21365 (xfs_fsr)

$ screen -ls
There are screens on:
2532.pts-0.p34 (Dead ???)
3776.pts-2.p34 (Dead ???)
4768.pts-7.p34 (Dead ???)
4793.pts-9.p34 (Dead ???)
4825.pts-11.p34 (Dead ???)
4875.pts-13.p34 (Dead ???)
4970.pts-15.p34 (Dead ???)

Lovely...

$ uname -r
2.6.20-rc5

Something is seriously wrong with that OOM killer.

Justin.