Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: APM crashes when IO is going on | Date | Fri, 21 Mar 2008 22:15:54 +0100 |
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On Friday, 21 of March 2008, Mikulas Patocka wrote: > Hi > > > > > > I have an old notebook with APM and I am experiencing occasional APMD > > > > > lockups after resume, with kernels 2.6.25rc1 snd 2.6.25rc3. They didn't > > > > > happen with 2.6.24 or before. > > > > > > > > > > The bug happens about once a week or so. > > > > > > > > > > If you have any idea how to debug it, you can send me a test code. > > > > > > > > It is possible that the bug was fixed in -rc4. Can you please test -rc6 and > > > > see if it's still present? > > > > > > > > Thanks, > > > > Rafael > > > > > > 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 > > > > Thanks, > > Rafael > > 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)
Are they userland threads or kernel threads?
> 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). > > How is suspending disk IO supposed to work?
That depends on the driver, if I understand your question correctly.
> And why it doesn't?
Hard to tell. You didn't provide much information ...
Thanks, Rafael
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