Bug#820567: kexec on mipsel partially broken between ckt20 and ckt25

From	Ben Hutchings <ben@decadent.org.uk>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#820567: kexec on mipsel partially broken between ckt20 and ckt25
Date	2016-04-10 11:20 +0200
Message-ID	<rmjHc-2L7-7@gated-at.bofh.it> (permalink)
References	<rmcw1-5PO-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Control: reassign -1 src:linux 3.16.7-ckt25-1

On Sat, 2016-04-09 at 18:31 -0700, Elliott Mitchell wrote:
> Package: linux-source-3.16
> Version: 3.16.7-ckt25-1~bpo70+1
> 
> Between 3.16.7-ctk20 and 3.16.7-ctk25 the kexec functionality of the
> Linux kernel was damaged.  The system I'm looking at uses a 3.3 kernel
> to load the "real" kernel off a filesystem and kexec into that.  The 3.3
> kernel was able to successfully kexec into a 3.16.7-ctk20 kernel, but
> is unable to kexec into a 3.16.7-ctk25 kernel.  However I found the
> 3.16.7-ctk20 IS able to successfully kexec the 3.16.7-ctk25 kernel.

Surely this is a bug in the built-in (3.3) kernel, not the new one?  If
there's something simple that can be done in the Debian kernel to work
around this, we should do that, but otherwise you're stuck with this.

> Doing a double-kexec does work around the issue, but it means I need to
> hold onto that one magic kernel for the moment...
> 
> In other news, it appears sometime between 3.3 and 3.10 there started
> being a requirement for GCC 4.8 on mipsel.

Packages in jessie must be buildable using compiler versions in jessie.
That means either gcc-4.8 or gcc-4.9.

Ben.

-- 
Ben Hutchings
I'm always amazed by the number of people who take up solipsism because
they heard someone else explain it. - E*Borg on alt.fan.pratchett

Thread

Bug#820567: kexec on mipsel partially broken between ckt20 and ckt25 Elliott Mitchell <ehem+debian@m5p.com> - 2016-04-10 03:40 +0200
  Bug#820567: kexec on mipsel partially broken between ckt20 and ckt25 Ben Hutchings <ben@decadent.org.uk> - 2016-04-10 11:20 +0200
    Bug#820567: kexec on mipsel partially broken between ckt20 and ckt25 Elliott Mitchell <ehem+debian@m5p.com> - 2016-04-10 20:20 +0200
      Bug#820567: kexec on mipsel partially broken between ckt20 and ckt25 Ben Hutchings <ben@decadent.org.uk> - 2016-04-10 21:00 +0200
        Bug#820567: kexec on mipsel partially broken between ckt20 and ckt25 Elliott Mitchell <ehem+debian@m5p.com> - 2016-04-10 23:40 +0200
          Bug#820567: kexec on mipsel partially broken between ckt20 and ckt25 Ben Hutchings <ben@decadent.org.uk> - 2016-04-11 02:40 +0200
            Bug#820567: kexec on mipsel partially broken between ckt20 and ckt25 Elliott Mitchell <ehem+debian@m5p.com> - 2016-04-11 08:00 +0200
  Processed: Re: Bug#820567: kexec on mipsel partially broken  between ckt20 and ckt25 owner@bugs.debian.org (Debian Bug Tracking System) - 2016-04-10 11:20 +0200
  Processed: Re: Bug#820567: kexec on mipsel partially broken  between ckt20 and ckt25 owner@bugs.debian.org (Debian Bug Tracking System) - 2016-04-10 21:00 +0200
  Bug#820567: marked as done (kexec on mipsel partially broken  between ckt20 and ckt25) owner@bugs.debian.org (Debian Bug Tracking System) - 2016-04-11 13:40 +0200

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