Re: [TuxOnIce-devel] kcryptd oops when resuming with TuxOnIce with KDB oops afterwards

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Am Donnerstag 29 Juli 2010 schrieb Nigel Cunningham:
> Hi Henrique.

Hi Nigel,

> On 29/07/10 12:49, Henrique de Moraes Holschuh wrote:
> > On Thu, 29 Jul 2010, Pedro Ribeiro wrote:
> >> I hit a bug when resuming with TuxOnIce. At the middle of a resume,
> >> it says Compress Read -22 and locks up. I caught the stack trace
> >> with kdb and took photos of that.
> > 
> > Maybe this?
> > http://lkml.org/lkml/2010/7/28/398
> 
> I don't think so. This issue has been around for a fair while. It's
> just impossible to reliably reproduce, and I haven't yet found the
> time to put some serious effort into tracking down the cause and
> fixing it.

I reported this one as - you said, its an TuxOnIce bug:
https://bugzilla.kernel.org/show_bug.cgi?id=15873

I switched compression on my ThinkPad T23 where it happened all 2-4 days 
or so with 2.6.34 from LZO to LZF. And since then I didn't get the error 
anymore, but with only 5 attempts so far, so I am not sure whether 
switching to LZF "fixed" it:

deepdance:~> cat /sys/power/tuxonice/debug_info 
TuxOnIce debugging info:
- TuxOnIce core  : 3.1.1.1
- Kernel Version : 2.6.34.1-tp23-toi-3.1.1.1-04990-g3a7d1f4
- Compiler vers. : 4.4
- Attempt number : 5
- Parameters     : 0 667656 0 1 0 0
- Overall expected compression percentage: 0.
- Checksum method is 'md4'.
  0 pages resaved in atomic copy.
- Compressor is 'lzf'.
  Compressed 776593408 bytes into 359897499 (53 percent compression).
- Block I/O active.
- Max outstanding reads 714. Max writes 5.
  Memory_needed: 1024 x (4096 + 200 + 76) = 4476928 bytes.
  Free mem throttle point reached 983.
- Swap Allocator enabled.
  Swap available for image: 229016 pages.
- File Allocator active.
  Storage available for image: 0 pages.
- I/O speed: Write 28 MB/s, Read 33 MB/s.
- Extra pages    : 26 used/500.
- Result         : Succeeded.

Maybe its a good idea to collect information in that bug report, even when 
it really is a TuxOnIce one.

Ciao,
-- 
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA  B82F 991B EAAC A599 84C7

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