linux-kernel - Re: 2.6.26-rc1 fails to boot

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Message-ID: <18470.48583.228614.436610@gargle.gargle.HOWL>
Date:	Sun, 11 May 2008 11:35:03 +0200
From:	Henny Wilbrink <wsdwhw@....tue.nl>
To:	"Carlos R. Mafra" <crmafra2@...il.com>
CC:	linux-kernel@...r.kernel.org, venkatesh.pallipadi@...el.com
Subject: Re: 2.6.26-rc1 fails to boot

Carlos R. Mafra wrote:
> On Sat 10.May'08 at 22:21:28 +0200, Henny Wilbrink wrote:
> Content-Description: message body text
> > Hello,
> > 
> > Kernel 2.6.26-rc1 completely fails to boot on my laptop. The last line
> > appearing on the console is:
> > 
> > ACPI: Processor [CPU1] (supports 8 throttling states)
> 
> Does booting with hpet=disable help?

No, 2.6.26-rc1 with hpet=disable now stops at

ata_piix 0000:00:1f.2: MAP [ P0 P2 IDE IDE ]

However, with idle=mwait as suggested by Venkatesh Pallipadi it did
boot in 2 out of 2 attempts.

> 
> > Kernel 2.6.25 fails to boot in an estimated 1 in 2 attempts.  The last
> > line on the console if this one fails is:
> > 
> > ACPI: LNXTHERM:01 is registered as thermal_zone0
> > 
> > I did a git bisection with "fails to boot in the first three attempts"
> > as the definition of "bad" between 2.6.26-rc1 and 2.6.25-rc3 which I
> > believed to be free of this problem.  The many reboots in the
> > bisection process however showed me that 2.6.25-rc3 also has an
> > estimated 1 in 10 chance of failing.  Anyway, the bisection ended
> > with:
> > 
> > 8a3227268877b81096d7b7a841aaf51099ad2068 is first bad commit
> > 
> > The bisection log and dmesg are attached.
> 
> I have this boot problem since before 2.6.25-rc1 but it is
> very difficult to do a bisection. Sometimes the probability
> of hanging was 1:30 and what I thought was a good kernel in
> fact was bad.
> 
> In fact the commit you got is a "merge commit" which does not
> change the source code so it is clearly bogus.
> 
> Mark Lord points out that this bug comes and goes with slight
> modifications in the .config, and in fact very recently 
> the probability of hanging changed dramatically for me.
> 
> I have already booted the kernel afa26be86b65 (six commits
> after 2.6.26-rc1) more than 30 times and it did not hang.
> 
> You can also take a look at some discussion here:
> http://bugzilla.kernel.org/show_bug.cgi?id=10117
> 

Yes this definitely looks like the same problem.

> And good luck with this!

Thanks,

Henny
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