Re: APM crashes when IO is going on

[Pavel Machek <pavel@ucw.cz>]

Hi!

> > > I'm now running on -rc6, so I'll see (it takes some days for the bug to 
> > > appear). Where is that patch that went to -rc4 and that may fix it?
> > 
> > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7a8d37a37380e2b1500592d40b7ec384dbebe7a0
> 
> I found another problem --- present in 2.6.23.1, 2.6.25rc3, 2.6.25rc6
> 
> --- when I run three threads concurrently reading raw disk partition and 
> suspend, I get 100% reproducible failure. (with one thread running it 
> usually succeeds, sometimes fail)
> 
> Either the on-going I/O will jam BIOS and I need to remove power to 
> continue.
> 
> Or the machine suspends, wakes up and reports "hda: lost interrupt" 
> (2.6.23.1 was able to recover from this condition, 2.6.25rc3,6 does not 
> recover and it is not able to send any more disk IOs).

Kernel should recover from lost interrupt. Can you track down this
regression?

-- 
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