linux-kernel - Re: 2.6.23-rc3-mm1 - vdso and gettimeofday issues with glibc

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Message-ID: <46D8864F.4020904@redhat.com>
Date:	Fri, 31 Aug 2007 17:21:19 -0400
From:	Chuck Ebbert <cebbert@...hat.com>
To:	Valdis.Kletnieks@...edu
CC:	Andrew Morton <akpm@...ux-foundation.org>, jakub@...hat.com,
	Ulrich Drepper <drepper@...hat.com>,
	linux-kernel@...r.kernel.org, Andi Kleen <ak@...e.de>
Subject: Re: 2.6.23-rc3-mm1 - vdso and gettimeofday issues with glibc

On 08/30/2007 10:08 AM, Valdis.Kletnieks@...edu wrote:
> On Wed, 29 Aug 2007 16:15:45 PDT, Andrew Morton said:
> 
>> So it's an interaction between the x86_64 vdso patches in Andi's tree and 
>> newer glibc, and we don't know which one is getting it wrong yet?
>>
>> If I ever get another -mm out the door (have been without electricity for
>> several days) I'll drop the vdso changes until this is sorted out.
> 
> Don't bother, I tested this last night against a vanilla 2.6.23-rc3 kernel
> and it had the same issue as well.  So Andi's vdso patches in his tree and/or
> the -mm kernel aren't to blame - it's in mainline as well.  And it's been
> in for a while - I also hit it with a 2.6.22-rc6-mm1 kernel.
> 

We also have:

  http://lkml.org/lkml/2007/7/29/376

(Time repeatedly jumps backwards ~4400 seconds.)
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