2014-11-28 23:32:55

by Jeremiah Mahler

[permalink] [raw]
Subject: Re: [BUG] linux-next: 20141127 boot hang

On Thu, Nov 27, 2014 at 03:16:19PM -0800, Jeremiah Mahler wrote:
>
> I just tried the latest linux-next 20141127 (commit 3bcf494d225fd19) and
> it hangs very early in the boot sequence, after decompressing the kernel
> and after fsck (see attached screen shot). I have tried it with two
> different machines and they both have the same problem. It worked with
> version 20141126.
>
[]

My bisect results so far indicate that the bug was introduced by this
merge commit.

commit 0305904a7416ced1358c5ff575e58135453bfc1d
Merge: 38a4751 2ef5864
Author: Stephen Rothwell <[email protected]>
Date: Thu Nov 27 14:53:44 2014 +1100

Merge remote-tracking branch 'block/for-next'

Conflicts:
fs/fs-writeback.c

I will continue until I find the specific patch.

--
- Jeremiah Mahler


2014-11-29 09:15:20

by Jeremiah Mahler

[permalink] [raw]
Subject: Re: [BUG] linux-next: 20141127 boot hang

all,

On Fri, Nov 28, 2014 at 03:32:50PM -0800, Jeremiah Mahler wrote:
> On Thu, Nov 27, 2014 at 03:16:19PM -0800, Jeremiah Mahler wrote:
> >
> > I just tried the latest linux-next 20141127 (commit 3bcf494d225fd19) and
> > it hangs very early in the boot sequence, after decompressing the kernel
> > and after fsck (see attached screen shot). I have tried it with two
> > different machines and they both have the same problem. It worked with
> > version 20141126.
> >
> []
>
> My bisect results so far indicate that the bug was introduced by this
> merge commit.
>
> commit 0305904a7416ced1358c5ff575e58135453bfc1d
> Merge: 38a4751 2ef5864
> Author: Stephen Rothwell <[email protected]>
> Date: Thu Nov 27 14:53:44 2014 +1100
>
> Merge remote-tracking branch 'block/for-next'
>
> Conflicts:
> fs/fs-writeback.c
>
[]

Something is definitely broken at this merge commit. I haven't
quite figured out how to bisect the patches inside the merge commit.
Any suggestions are welcome.

--
- Jeremiah Mahler

2014-11-29 10:44:58

by Stephen Rothwell

[permalink] [raw]
Subject: Re: [BUG] linux-next: 20141127 boot hang

Hi Jeremiah,

On Sat, 29 Nov 2014 01:15:10 -0800 Jeremiah Mahler <[email protected]> wrote:
>
> all,
>
> On Fri, Nov 28, 2014 at 03:32:50PM -0800, Jeremiah Mahler wrote:
> > On Thu, Nov 27, 2014 at 03:16:19PM -0800, Jeremiah Mahler wrote:
> > >
> > > I just tried the latest linux-next 20141127 (commit 3bcf494d225fd19) and
> > > it hangs very early in the boot sequence, after decompressing the kernel
> > > and after fsck (see attached screen shot). I have tried it with two
> > > different machines and they both have the same problem. It worked with
> > > version 20141126.
> > >
> > []
> >
> > My bisect results so far indicate that the bug was introduced by this
> > merge commit.
> >
> > commit 0305904a7416ced1358c5ff575e58135453bfc1d
> > Merge: 38a4751 2ef5864
> > Author: Stephen Rothwell <[email protected]>
> > Date: Thu Nov 27 14:53:44 2014 +1100
> >
> > Merge remote-tracking branch 'block/for-next'
> >
> > Conflicts:
> > fs/fs-writeback.c
> >
> []
>
> Something is definitely broken at this merge commit. I haven't
> quite figured out how to bisect the patches inside the merge commit.
> Any suggestions are welcome.

It could easily actually be the merge itself. There was a conflict in
that merge that I fixed up as best I could and asked others to check
the resolution.

I know that Cristoph thinks that the lazytime stuff is not ready for
-next yet, but are there any other comments?

--
Cheers,
Stephen Rothwell [email protected]


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