crash binary not working with latest kernel

2018-01-26 Thread Joe Smith
Hi,

I am running Ubuntu 16.04. I built and booted the latest kernel. Now
the crash binary does not work, neither a panic is saved. What is the
procedure to use crash with the latest unreleased kernel.

Regards,

-- 
JS

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Re: Kernelupdate

2018-01-26 Thread valdis . kletnieks
On Fri, 26 Jan 2018 14:07:08 +0100, "Frank Smith" said:

> I am a bit confused with upgrading my kernel to a newer minor version.
>
> My current kernel 4.14 is from 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git , but 
> there are no minor tags available like 4.14.15.
>
> I figured out there is another repo on 
> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
>
> Is the second git-url the prefered one?

Depends on what you're looking for.  linux-stable is by definition always
behind Linus's tree, and has backported patches applied to it.

In particular, note that only a subset of patches that go into Linus's tree end
up also applied to linux-stable.  In fact, in some cases a distro kernel has 
more
fixes applied to it than a later linux-stable - a vendor 4.14.5 can have more
vendor-backported fixes than a stock 4.14.8 kernel.

So if you're building your own kernel from a git tree, your first question 
should
be "*why* am I building a kernel instead of using the distro kernel?", and 
decide
what git tree based on that.



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Re: Kernelupdate

2018-01-26 Thread Greg KH
On Fri, Jan 26, 2018 at 02:07:08PM +0100, Frank Smith wrote:
> Dear list,
>  
> I am a bit confused with upgrading my kernel to a newer minor version.
>  
> My current kernel 4.14 is from 
> https://git.kernel.org/pub/scm/linux/kernel/git/
> torvalds/linux.git , but there are no minor tags available like 4.14.15.

Correct.

> I figured out there is another repo on git://git.kernel.org/pub/scm/linux/
> kernel/git/stable/linux-stable.git
>  
> Is the second git-url the prefered one?

Yes, it should be listed in the announcements I make for the stable
kernel updates, as well as being pointed to on the front page of
kernel.org.

Hope this helps,

greg k-h

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Re: Linux Kernel contains only C code?

2018-01-26 Thread valdis . kletnieks
On Fri, 26 Jan 2018 05:53:20 -0500, Ruben Safir said:
> On 01/26/2018 02:20 AM, Larry Chen wrote:
> > I have never seen c++, perl or python code in kernel source tree.
> > Imagine that, if kernel relies on perl, python or other 3rd-party code,
> > will it cause nested or mutual dependency issues? 3rd-party code bugs
> > may also cause problems that make the kernel unstable.
>
>
> Its not even really C, at least not as a normal application developer
> thinks of it.  This is systems programming with a lot of kernel specific
> libraries.

It's C.  The fact that things like stdio aren't available inside the kernel
doesn't mean it's not C.

(I've worked on large userspace code bases where you could go for several
hundred thousand lines without seeing anything from /usr/include, and nobody
would argue that code wasn't C.)



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Kernelupdate

2018-01-26 Thread Frank Smith
Dear list,

 

I am a bit confused with upgrading my kernel to a newer minor version.

 

My current kernel 4.14 is from https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git , but there are no minor tags available like 4.14.15.

 

I figured out there is another repo on git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git

 

Is the second git-url the prefered one?

 

best fs

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Re: Linux Kernel contains only C code?

2018-01-26 Thread Ruben Safir
On 01/26/2018 02:20 AM, Larry Chen wrote:
> I have never seen c++, perl or python code in kernel source tree.
> Imagine that, if kernel relies on perl, python or other 3rd-party code,
> will it cause nested or mutual dependency issues? 3rd-party code bugs
> may also cause problems that make the kernel unstable.


Its not even really C, at least not as a normal application developer
thinks of it.  This is systems programming with a lot of kernel specific
libraries.

-- 
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that Brooklyn, like Atlantis, reaches mythological
proportions in the mind of the world - RI Safir 1998
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DRM is THEFT - We are the STAKEHOLDERS - RI Safir 2002
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but incompatible with living as a free human being. -RI Safir 2013

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