Re: [Bug #16537] TREE_RCU hangs at boot

Rafael J. Wysocki
2010-09-21T19:07:54Z

On Tuesday, September 21, 2010, Paul E. McKenney wrote:
> On Mon, Sep 20, 2010 at 11:26:27AM -0700, 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? ;-)
>
> It turns out that this problem is due to tab processing in the PA-RISC
> firmware, which certainly explains my inability to reproduce it. It
> turns out that it is fixed by:
>
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=d9b68e5e88248bb24fd4e455588bea1d56108fd6
>
> So we can close this regression.
>
> Many thanks to Guy Martin <gmsoft-OHzg2hESl54FHpyHPIa6Kw@public.gmane.org> for much help with
> this!!!

Thanks, closed.

Rafael