Re: INFO: task mount:11202 blocked for more than 120 seconds

Chr
2008-03-14T00:16:18Z

On Thursday 13 March 2008 22:54:25 Christian Kujau wrote:
> On Thu, 13 Mar 2008, Chr wrote:
> > On Thursday 13 March 2008 14:45:39 Christian Kujau wrote:
> >> and so does -git8 and -git9...sigh :(
> >
> > hmm, I can boot any of these -rcX-gitY kernels (but not without some
> > stuck tasks after about a hour or so...)
>
> Ah, when you said -git17 would be the last "good" kernel, I thought
> everything earlier would not have the stuck tasks.
well, no... even 2.6.24.3 has _hangs_, however not forever (approx. 5-10 min)
and everything is back to normal...

> > sounds a bit strange? Is this a SMP related problem after all?
>
> I don't think so, as I don't have an SMP system (and CONFIG_SMP is
> disabled as well).
Then maybe scheduler? because these values looks suspecious:
(that's why I added Ingo to CC, because he probably knows what's NOT going on
;-) )

(full dmesg there:
http://www.pastebin.ca/941845

config here:
http://www.pastebin.ca/941856
)

the funny stuff is highlighted with a >:
cpu#1, 2211.332 MHz
.nr_running : 8
.load : 188884
.nr_switches : 9615826
.nr_load_updates : 1879402
> .nr_uninterruptible : -2053
.jiffies : 4296946718
.next_balance : 4296.946740
.curr->pid : 0
.clock : 9800558.756490
.idle_clock : 6521432.794621
.prev_clock_raw : 4476359.432375
.clock_warps : 0
.clock_overflows : 8676899
.clock_underflows : 688045
.clock_deep_idle_events : 0
.clock_max_delta : 4.000250
.cpu_load[0] : 0
.cpu_load[1] : 24
.cpu_load[2] : 112
.cpu_load[3] : 155
.cpu_load[4] : 177

cfs_rq
.exec_clock : 1353227.466775
.MIN_vruntime : 1808656.942015
.min_vruntime : 1808696.942015
.max_vruntime : 1808657.235424
.spread : 0.293409
> .spread0 : -267982.528057
.nr_running : 7
.load : 11362
.bkl_count : 60751
.nr_spread_over : 6234

runnable tasks:
task PID tree-key switches prio exec-runtime
sum-exec sum-sleep
----------------------------------------------------------------------------------------------------------
kcryptd 2266 1808656.942015 12778 115 1808656.942015
3689.257692 3125323.031084
hald-addon-inpu 5504 1808656.942015 622 120 1808656.942015
10.739211 3044831.003941
kcryptd 7312 1808656.960820 578891 115 1808656.960820
71166.387493 2625492.750280
Xorg 9564 1808656.942016 513338 120 1808656.942016
245777.204573 2587613.331559
pdflush 10059 1808656.942015 14575 120 1808656.942015
4400.355110 2985523.630368
pdflush 10696 1808656.942015 9433 120 1808656.942015
3607.302084 3103638.660388
xine 16773 1808657.235424 13455 120 1808657.235424
2135.923058 574348.774173
> watchdog 16959 -206866.028086 0 98 -206866.028086
0.000000 0.000000

(it's at the end of the dmesg, the kernel, X.org and probably everything else
was stuck...)

Thanks,
Christian.