Re: [Bug #16537] TREE_RCU hangs at boot

Rolf Eike Beer
2010-09-20T19:20:27Z

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Paul E. McKenney wrote:
> On Sun, Sep 12, 2010 at 09:08:42PM +0200, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of regressions introduced between 2.6.34 and 2.6.35.
> >
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.34 and 2.6.35. Please verify if it still should
> > be listed and let the tracking team know (either way).
> >
> > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=16537
> > Subject : TREE_RCU hangs at boot
> > Submitter : Rolf Eike Beer <eike-kernel-F+mm6HnICJmzQB+pC5nmwQ@public.gmane.org>
> > Date : 2010-08-07 12:18 (37 days old)
> > Handled-By : Paul E. McKenney <paulmck-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
>
> I cannot reproduce this. The function that is claimed to hang contains
> only printk()s. I have asked the guys who can actually reproduce it
> to try a later kernel, and will let you know how this goes.
>
> If you cannot trust printk(), who can you trust? ;-)

I suspect that it is related to:

http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.35.y.git;a=commit;h=5a8477871f0b45664eedfa352c3942093408a169

I'll try to test plain 2.6.35 with this patch and see it this works.

Eike

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