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* Re: USB storage does not work with 3GB of RAM, but does with 2G of RAM
@ 2005-07-11 15:03 Oliver Weihe
  2005-07-11 23:21 ` Jon Schindler
  2005-07-12 18:43 ` Jon Schindler
  0 siblings, 2 replies; 10+ messages in thread
From: Oliver Weihe @ 2005-07-11 15:03 UTC (permalink / raw)
  To: linux-kernel

Tried different settings for "Soft-/Hardware Memory Hole" in BIOS?


^ permalink raw reply	[flat|nested] 10+ messages in thread
* Re: Realtime Preemption, 2.6.12, Beginners Guide?
@ 2005-07-08 18:38 Alistair John Strachan
  2005-07-08 19:12 ` USB storage does not work with 3GB of RAM, but does with 2G of RAM Jon Schindler
  0 siblings, 1 reply; 10+ messages in thread
From: Alistair John Strachan @ 2005-07-08 18:38 UTC (permalink / raw)
  To: Ingo Molnar; +Cc: linux-kernel

[-- Attachment #1: Type: text/plain, Size: 1994 bytes --]

On Friday 08 Jul 2005 12:46, Ingo Molnar wrote:
[snip]
>
> Ok. Could you try to debug this some more? In the -51-17 patch i've
> implemented a new stack-overflow debugging feature: 'stack footprint
> maximum searching'. It is automatically active if you have
> CONFIG_LATENCY_TRACE and CONFIG_DEBUG_STACKOVERFLOW enabled. It will
> track and (if it can be done safely) print out maximum stack usage sites
> immediately. Hopefully this results in better stackdumps. It should
> print similar traces:
>
> ----------------------------->
>
> | new stack-footprint maximum: smartd/1747, 1768 bytes.
>
> ------------|
>  [<c013c1b6>] check_raw_flags+0xb/0x55 (8)
>  [<c013ebeb>] sub_preempt_count+0x1a/0x1c (8)
>  [<c013cb28>] __mcount+0x6a/0x91 (28)
>  [<c013c3ff>] irqs_disabled+0x8/0x19 (16)
>  [<c013c7b5>] ____trace+0x9e/0x208 (4)
>  [<c01142d8>] mcount+0x14/0x18 (24)
>  [<c013c3ff>] irqs_disabled+0x8/0x19 (20)
>  [<c013c7b5>] ____trace+0x9e/0x208 (8)
>  [<c013f145>] trace_stop_sched_switched+0x40/0x17d (8)
>  [...]
>
> i've written a separate, hopefully more robust stack-dumper which is
> used for the above traces. Perhaps in your overflow case it results in
> something usable.

Unfortunately I see nothing like this when the machine crashes. Find attached 
my config, which has CONFIG_4KSTACKS and the options you specified. Are you 
sure this is sufficient to enable it?

Here is an extremely bad digital camera pic from the crash. My debugging 
prowess has evolved to the stage where by I'm using a maximum res vesafb 
console.

However, I'm not at work so it's my own digital camera that I'm using rather 
than work's, and it seems to react badly to the LCD. I hope you can read the 
numbers, if not I'll try to transliterate them for you.

http://devzero.co.uk/~alistair/oops5.jpeg

-- 
Cheers,
Alistair.

personal:   alistair()devzero!co!uk
university: s0348365()sms!ed!ac!uk
student:    CS/CSim Undergraduate
contact:    1F2 55 South Clerk Street,
            Edinburgh. EH8 9PP.

[-- Attachment #2: config.gz --]
[-- Type: application/x-gzip, Size: 8558 bytes --]

^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2005-07-12 18:43 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
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2005-07-08 19:29   ` USB storage does not work with 3GB of RAM, but does with 2G of RAM Andi Kleen
2005-07-08 20:03     ` Jon Schindler
2005-07-08 20:16     ` Jon Schindler
2005-07-09  0:49     ` Jon Schindler
2005-07-09  0:56       ` Andi Kleen
2005-07-09  2:57         ` Jon Schindler
2005-07-11 15:03 Oliver Weihe
2005-07-11 23:21 ` Jon Schindler
2005-07-12 18:43 ` Jon Schindler
  -- strict thread matches above, loose matches on Subject: below --
2005-07-08 18:38 Realtime Preemption, 2.6.12, Beginners Guide? Alistair John Strachan
2005-07-08 19:12 ` USB storage does not work with 3GB of RAM, but does with 2G of RAM Jon Schindler

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