[gentoo-user] Kernel randomly locking up, no error messeges, no panics nothing.

[gentoo-user] Kernel randomly locking up, no error messeges, no panics nothing.

[Ivan Lucian Aron]

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Lately since my fresh gentoo install, i've been having a lot of problems
with the kernel locking up at random.
It's not a hard lockup, or a panic crash, it just stops running new
processes, i get a lot of defuncts.. and dosn't let new users log in at all,
sudo/su-ing either.

I've checked everything, even recompiled the kernel few times,
including/excluding genkernel. Tried disabling APIC by passing noapic.
Nothing seems to work.

I'm running it on a AMD 64 Dual-Core 3800+, Asus A8N-SLI Deluxe Mobo,
4 modules of Kingston Hardcore 3 512MB.
NVIDIA 7800 GTX Vidoe Card/ with lastest nvidia-drivers

(Oh and I ran memcheck for 12 hours, nothing came up)

Basicly I tried everything and nothing worked.. and it appears tu run great
on the livecd kernel.. and crashes at genkernel or a manually compiled
kernel.

Any ideas?

(My current non-genkernel config file is attached)

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Re: [gentoo-user] Kernel randomly locking up, no error messeges, no panics nothing.

[Alan McKinnon]

On Wednesday 14 February 2007, Ivan Lucian Aron wrote:
> Lately since my fresh gentoo install, i've been having a lot of
> problems with the kernel locking up at random.
> It's not a hard lockup, or a panic crash, it just stops running new
> processes, i get a lot of defuncts.. and dosn't let new users log in
> at all, sudo/su-ing either.
>
> I've checked everything, even recompiled the kernel few times,
> including/excluding genkernel. Tried disabling APIC by passing
> noapic. Nothing seems to work.
>
> I'm running it on a AMD 64 Dual-Core 3800+, Asus A8N-SLI Deluxe Mobo,
> 4 modules of Kingston Hardcore 3 512MB.
> NVIDIA 7800 GTX Vidoe Card/ with lastest nvidia-drivers
>
> (Oh and I ran memcheck for 12 hours, nothing came up)
>
> Basicly I tried everything and nothing worked.. and it appears tu run
> great on the livecd kernel.. and crashes at genkernel or a manually
> compiled kernel.

Nothing in the .config seems to jump out and bite me, so a few questions 
for more background:

Which kernel version?

Is this a new machine, or a new install on an old machine that used to 
work fine?

If it's the second, what was the last known good kernel that ran?

I'd like to see a 'diff -u' between the current config and the last 
known good one

alan


-- 
Optimists say the glass is half full,
Pessimists say the glass is half empty,
Developers say wtf is the glass twice as big as it needs to be?

Alan McKinnon
alan at linuxholdings dot co dot za
+27 82, double three seven, one nine three five
-- 
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Re: [gentoo-user] Kernel randomly locking up, no error messeges, no panics nothing.

[Ivan Lucian Aron]

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On 2/14/07, Alan McKinnon <alan@linuxholdings.co.za> wrote:
>
> On Wednesday 14 February 2007, Ivan Lucian Aron wrote:
> > Lately since my fresh gentoo install, i've been having a lot of
> > problems with the kernel locking up at random.
> > It's not a hard lockup, or a panic crash, it just stops running new
> > processes, i get a lot of defuncts.. and dosn't let new users log in
> > at all, sudo/su-ing either.
> >
> > I've checked everything, even recompiled the kernel few times,
> > including/excluding genkernel. Tried disabling APIC by passing
> > noapic. Nothing seems to work.
> >
> > I'm running it on a AMD 64 Dual-Core 3800+, Asus A8N-SLI Deluxe Mobo,
> > 4 modules of Kingston Hardcore 3 512MB.
> > NVIDIA 7800 GTX Vidoe Card/ with lastest nvidia-drivers
> >
> > (Oh and I ran memcheck for 12 hours, nothing came up)
> >
> > Basicly I tried everything and nothing worked.. and it appears tu run
> > great on the livecd kernel.. and crashes at genkernel or a manually
> > compiled kernel.
>
> Nothing in the .config seems to jump out and bite me, so a few questions
> for more background:
>
> Which kernel version?

Kernel version is 2.6.18-gentoo-r6
Full UName:
Linux nophinity 2.6.18-gentoo-r6 #2 SMP Sat Feb 10 15:32:52 EET 2007 x86_64
AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ AuthenticAMD GNU/Linux



Is this a new machine, or a new install on an old machine that used to
> work fine?


Its a new install on an old box.. sorry but I don't have the last config
file:(

If it's the second, what was the last known good kernel that ran?
>
> I'd like to see a 'diff -u' between the current config and the last
> known good one
>
> alan
>
>
> --
> Optimists say the glass is half full,
> Pessimists say the glass is half empty,
> Developers say wtf is the glass twice as big as it needs to be?
>
> Alan McKinnon
> alan at linuxholdings dot co dot za
> +27 82, double three seven, one nine three five
> --
> gentoo-user@gentoo.org mailing list
>
>

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Re: [gentoo-user] Kernel randomly locking up, no error messeges, no panics nothing.

[Ivan Lucian Aron]

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Just tried disabling Preemt Big Kernel Lock, and Voluntary Preept

I read somewhere that X2 Users should disable it.. So i'm currently waiting
to see if locks still happen..

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Re: [gentoo-user] Kernel randomly locking up, no error messeges, no panics nothing.

[Duane Griffin]

On 14/02/07, Ivan Lucian Aron <nophinity@gmail.com> wrote:
> Lately since my fresh gentoo install, i've been having a lot of problems
> with the kernel locking up at random.
> It's not a hard lockup, or a panic crash, it just stops running new
> processes, i get a lot of defuncts.. and dosn't let new users log in at all,
> sudo/su-ing either.

Which kernel? Have you tried the latest vanilla release?

Use SysRq-t to see what is happening. Chances are you have a deadlock somewhere.

Cheers,
Duane.

-- 
"I never could learn to drink that blood and call it wine" - Bob Dylan
-- 
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Re: [gentoo-user] Kernel randomly locking up, no error messeges, no panics nothing.

[Ivan Lucian Aron]

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On 2/14/07, Duane Griffin <duaneg@dghda.com> wrote:
>
> On 14/02/07, Ivan Lucian Aron <nophinity@gmail.com> wrote:
> > Lately since my fresh gentoo install, i've been having a lot of problems
> > with the kernel locking up at random.
> > It's not a hard lockup, or a panic crash, it just stops running new
> > processes, i get a lot of defuncts.. and dosn't let new users log in at
> all,
> > sudo/su-ing either.
>
> Which kernel? Have you tried the latest vanilla release?


I haven't tried vanilla sources

Use SysRq-t to see what is happening. Chances are you have a deadlock
> somewhere.


SysRq-t? Sorry can't find it in portage, can you explain please?

Cheers,
> Duane.
>
> --
> "I never could learn to drink that blood and call it wine" - Bob Dylan
> --
> gentoo-user@gentoo.org mailing list
>
>

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Re: [gentoo-user] Kernel randomly locking up, no error messeges, no panics nothing.

[Hemmann, Volker Armin]

On Mittwoch, 14. Februar 2007, Ivan Lucian Aron wrote:
> On 2/14/07, Duane Griffin <duaneg@dghda.com> wrote:

>
> SysRq-t? Sorry can't find it in portage, can you explain please?

less /usr/src/linux/Documentation/sysrq.txt
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Re: [gentoo-user] Kernel randomly locking up, no error messeges, no panics nothing.

[Pongrácz István]

I had the same experience, when I turned on the 'DMA engine' option in
the kernel config (from 2.6.18.x)
I disabled it and after it everything are working fine.

István


2007. 02. 14, szerda keltezéssel 15.30-kor Ivan Lucian Aron ezt írta:
> 
> 
> On 2/14/07, Hemmann, Volker Armin
> <volker.armin.hemmann@tu-clausthal.de> wrote:
>         On Mittwoch, 14. Februar 2007, Ivan Lucian Aron wrote:
>         > On 2/14/07, Duane Griffin <duaneg@dghda.com> wrote:
>         
>         >
>         > SysRq-t? Sorry can't find it in portage, can you explain
>         please? 
>         
>         less /usr/src/linux/Documentation/sysrq.txt
>         --
>         gentoo-user@gentoo.org mailing list
> 
> 
> Thanks. So wait for it to lock again, and check the kernel tasks with
> sysrq-t / echo t >/proc/sysrq-trigger. 
> Will get back as soon as I get more info.
> 
> 
> 
> 
> 
-- 
Nyílt forráskód azokra az igazán nehéz napokra. BSA
Open source for those really hard days. BSA
http://www.osbusiness.hu

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Re: [gentoo-user] Kernel randomly locking up, no error messeges, no panics nothing.

[Alan McKinnon]

On Wednesday 14 February 2007, Pongrácz István wrote:
> I had the same experience, when I turned on the 'DMA engine' option
> in the kernel config (from 2.6.18.x)
> I disabled it and after it everything are working fine.

That's interesting. I've wondered what that option is since it came out, 
as documentation for it is sparse. Not knowing what it is, I've always 
left it disabled.

alan



-- 
Optimists say the glass is half full,
Pessimists say the glass is half empty,
Developers say wtf is the glass twice as big as it needs to be?

Alan McKinnon
alan at linuxholdings dot co dot za
+27 82, double three seven, one nine three five
--
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Kernel randomly locking up, no error messeges, no panics nothing.

[Ivan Lucian Aron]

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I turned off Preempt Big Kernel Lock earlier today, and haven't had a
deadlock/crash since.
Apparently that solved it.. thanks for the help/support

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Re: [gentoo-user] Kernel randomly locking up, no error messeges, no panics nothing.

[Anthony E. Caudel]

Ivan Lucian Aron wrote:
> I turned off Preempt Big Kernel Lock earlier today, and haven't had a
> deadlock/crash since.
> Apparently that solved it.. thanks for the help/support

I have an AMD Athlon 64X2 4200+ and Have the "Preempt Big Kernel Lock"
turned on in my 2.6.19 kernel and have experienced no problems.  Don't
know if that helps or hurts but just thought I'd let you know.

Tony

-- 
Those who would give up essential Liberty, to purchase a little temporary
Safety, deserve neither Liberty nor Safety.
   -- Benjamin Franklin
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Re: [gentoo-user] Kernel randomly locking up, no error messeges, no panics nothing.

[Duane Griffin]

On 14/02/07, Ivan Lucian Aron <nophinity@gmail.com> wrote:
> I haven't tried vanilla sources

Fair enough, let's see where the problem seems to be, anyway.

> So wait for it to lock again, and check the kernel tasks with
> sysrq-t / echo t >/proc/sysrq-trigger.
> Will get back as soon as I get more info.

Yep. If things are going *very* badly then writing to the system log
may be failing. In that case you can switch to a console and use
SysRq-9 then SysRq-t to send the output to console. Check your system
log first though. Much easier to get it from there than copying things
down by hand or photgraphing your screen!

Cheers,
Duane.

-- 
"I never could learn to drink that blood and call it wine" - Bob Dylan
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