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SubjectRe: 2.6.25-rc2 rcupreempt WARN after suspend to ram
Date
On Tuesday, 26 of February 2008, Karsten Wiese wrote:
> Am Sonntag, 24. Februar 2008 schrieb Paul E. McKenney:
> > On Sun, Feb 24, 2008 at 04:38:15PM +0100, Karsten Wiese wrote:
> > > Am Samstag, 23. Februar 2008 schrieb Karsten Wiese:
> > > > Am Samstag, 23. Februar 2008 schrieb Paul E. McKenney:
> > > > > On Sat, Feb 23, 2008 at 01:41:02PM +0100, Karsten Wiese wrote:
> > > > > > Hi,
> > > > > >
> > > > > > This appeared in dmesg after
> > > > > > $ echo core > /sys/power/pm_test
> > > > > > followed by 3 cycles of
> > > > > > $ echo mem > /sys/power/state
> > > > > > . .config attached.
> > > > > >
> > > > > > dmesg excerpt (, full ~1MByte available):
> > > > >
> > > > > Does this tree have http://lkml.org/lkml/2008/1/29/208 applied?
> > > >
> > > > Yes. This tree was linus' git head as of yesterday or the day before.
> > >
> > > Updated to git-head of today, same test and .config, different symptoms
> > > like in this thread: http://lkml.org/lkml/2008/2/23/260
> > > Later in this thread, Alan Cox said it looked like irq problems.
> > > Maybe also the rcupreemt related WARN_ON I saw are caused by irq problems.
> >
> > Might be, but am taking a closer look at the interaction between irq,
> > dynticks, and rcupreempt in any case.
>
> [Added Rafael, Thomas and Steven to CC]
>
> The "different symptoms" above are indeed unrelated and solved by reverting
> "commit 559bbe6cbd0d8c68d40076a5f7dc98e3bf5864b2
> power_state: get rid of write-only variable in SATA"

This commit has been reverted from the mainline.

Thanks,
Rafael


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