Re: system keeps freezing once every 24 hours / random apps crashing

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Mark v Wolher wrote:
> Jiri Slaby wrote:
>>>Hi Sami,
>>>That caused also a crash, i kept pressing the v key and within 15
>>>seconds it crashed, then i saw the crash-info appear in the log and when
>>>i clicked on mozilla then it crashed too but without crahs info and
>>>system froze totally.
>>>Below the crash info:
>>>Dec 31 17:38:32 localhost kernel: Unable to handle kernel paging request
>>>at virtual address c8111000
>>>Dec 31 17:38:32 localhost kernel:  printing eip:
>>>Dec 31 17:38:32 localhost kernel: c036037a
>>>Dec 31 17:38:32 localhost kernel: *pgd = 21063
>>>Dec 31 17:38:32 localhost kernel: *pmd = 21063
>>>Dec 31 17:38:32 localhost kernel: *pte = 8111000
>>>Dec 31 17:38:32 localhost kernel: Oops: 0002 [#4]
>>Could you try the attached patch?
>>diff --git a/drivers/media/video/bttv-risc.c b/drivers/media/video/bttv-risc.c
>>--- a/drivers/media/video/bttv-risc.c
>>+++ b/drivers/media/video/bttv-risc.c
>>@@ -53,7 +53,7 @@ bttv_risc_packed(struct bttv *btv, struc
>> 	/* estimate risc mem: worst case is one write per page border +
>> 	   one write per scan line + sync + jump (all 2 dwords) */
>> 	instructions  = (bpl * lines) / PAGE_SIZE + lines;
>>-	instructions += 2;
>>+	instructions += 4;
>> 	if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,instructions*8)) < 0)
>> 		return rc;
> Hi Jiri,
> Tried it but it seems to crash indeed faster, and this time it didn't
> leave traces in the log.
> Appreciate your help eitherway !
> -

Hiya all,

First of all happy new year ! :-)

I might have discovered something interesting which might be responsible
for all those lockups/freezes/crashes !

Right now, i'm putting a huge load on the system, disk i/o, swapping
high, virusscan, number crushing with ssh-keygen moduli etc ...

5 hours passed with this load and no single crash/freeze/lockup happened
! Normally with all this load sooner or later something would have

What did i do ?

I disabled bttv support in the kernel, so no tv for me at this moment.
I'm planning to let this run for at least another 5 hours with heavy
load and see if still nothing happens...

Keeping you informed.


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