Re: 2.6.19-rc3: known unfixed regressions (v3)

Michael S. Tsirkin
2006-10-30T16:32:23Z

Quoting r. Jun'ichi Nomura <j-nomura@ce.jp.nec.com>:
> Subject: Re: 2.6.19-rc3: known unfixed regressions (v3)
>
> Hi Michael,
>
> > 2.6.19-rc3 without reverting
> > d7dd8fd9557840162b724a8ac1366dd78a12dff stops receiving ACPI events after some
> > use (sometimes after suspend/resume, sometimes after kernel build stress). Now,
> > what does this tell us? Andrew, any idea?
>
> The code is related to bd_claim_by_disk which is called when
> device-mapper or md tries to mark the underlying devices
> for exclusive use and creates symlinks from/to the devices
> in sysfs. The patch added error handlings which weren't in
> the original code.
>
> I have no idea how it affects ACPI event handling.

It's a mystery. Probably exposes a bug somewhere?

> Are you using dm and/or md on your machine?

The .config is attached to bugzilla.

> Have you seen any unusual kernel messages or symptoms regarding
> dm/md before the ACPI problem occurs?

I haven't.

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