Re: How do you boot the debug kernel installed from kernel-dbg.txz?

[Pete Wright]

On 11/6/18 4:22 PM, Rainer Duffner wrote:

Hi,

I need to install a debug-kernel.

I didn’t install the debug-kernel when I installed the system (11.2), but I 
downloaded the archive.

I can unpack it - but how do I then select the kernel at boot?


I may be mistaken, but I don't think you actually need to boot the 
debug-kernel and modules (in fact I don't think you can), rather those 
files are intended for being read by kgdb while debugging a core that is 
generated by savecore(8) so that you have access to full symbol table 
etc.  this page section in the dev handbook debugging kernel core dumps:


https://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html

hope this helps,

-pete

--
Pete Wright
p...@nomadlogic.org
@nomadlogicLA

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Re: How do you boot the debug kernel installed from kernel-dbg.txz?

[Rainer Duffner]

> Am 07.11.2018 um 01:40 schrieb Pete Wright :
> 
> I may be mistaken, but I don't think you actually need to boot the 
> debug-kernel and modules (in fact I don't think you can), rather those files 
> are intended for being read by kgdb while debugging a core that is generated 
> by savecore(8) so that you have access to full symbol table etc.  this page 
> section in the dev handbook debugging kernel core dumps:
> 
> https://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html
>  
> 
> 
> hope this helps,
> 
> -pete



Yes, you are right.

However obvious it may seem, it isn’t for somebody who’s never really done that…


I asked the same question in my PR and got an answer immediately - didn’t 
expect that to go that fast…



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FreeBSD-12.0-BETA1-i386-bootonly.iso will not boot

[CenturyLink Customer]

Nov. 6, 2018I have been test booting FreeBSD-12.0-BETA1-i386-bootonly.iso 
without success this morning.Previously, the same no boot for a.k.a. "BETA2" 
and "BETA3", as well.Checksums for these discs match okay.Suggestion, was made 
by others, that recent changes to boot-loader may have caused this.Suggestions 
or workarounds would be appreciated.Sincerely,cksalexan...@q.com
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How do you boot the debug kernel installed from kernel-dbg.txz?

[Rainer Duffner]

Hi,

I need to install a debug-kernel.

I didn’t install the debug-kernel when I installed the system (11.2), but I 
downloaded the archive.

I can unpack it - but how do I then select the kernel at boot?


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Re: How do you boot the debug kernel installed from kernel-dbg.txz?

[Pete Wright]

On 11/6/18 4:47 PM, Rainer Duffner wrote:



Am 07.11.2018 um 01:40 schrieb Pete Wright :

I may be mistaken, but I don't think you actually need to boot the debug-kernel 
and modules (in fact I don't think you can), rather those files are intended 
for being read by kgdb while debugging a core that is generated by savecore(8) 
so that you have access to full symbol table etc.  this page section in the dev 
handbook debugging kernel core dumps:

https://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html
 


hope this helps,

-pete



Yes, you are right.

However obvious it may seem, it isn’t for somebody who’s never really done that…


I asked the same question in my PR and got an answer immediately - didn’t 
expect that to go that fast…


great, glad i'm not spreading mis-info!  i don't think it's too obvious 
IMHO, took me a while to grok it a year or so ago when i was debugging 
some graphics driver issues :)



-p

--
Pete Wright
p...@nomadlogic.org
@nomadlogicLA

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[Bug 228535] emulators/virtualbox-ose-kmod: 11.2-BETA3 - kldload vboxdrv leads to panic

[bugzilla-noreply]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=228535

--- Comment #20 from Rodney W. Grimes  ---
(In reply to D. Ebdrup from comment #18)
And has a 90+% chance of breaking again when 11.3 is release, this is a general
issue being address by some other means that are not yet in place.  Either
special "per release" kmod packages, or "kmods install source and require
kernel sources to rebuild them" are currently being looked at as possible long
term solutions to this KABI breakage issue.

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[Bug 228535] emulators/virtualbox-ose-kmod: 11.2-BETA3 - kldload vboxdrv leads to panic

[bugzilla-noreply]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=228535

D. Ebdrup  changed:

   What|Removed |Added

 CC||debd...@gmail.com

--- Comment #18 from D. Ebdrup  ---
To clarify, this issue is fixed as of the EOL date of 11.1, since the 11.2
packages have now been built on 11.2.

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[Bug 228535] emulators/virtualbox-ose-kmod: 11.2-BETA3 - kldload vboxdrv leads to panic

[bugzilla-noreply]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=228535

Jan Jurkus  changed:

   What|Removed |Added

 CC||i...@gcecad-service.nl

--- Comment #19 from Jan Jurkus  ---
Well, I just (this evening) upgraded a server to 11.2-RELEASE and still got a
kernel panic.

Starting the old kernel, commenting out the virtualbox stuff in
/boot/loader.conf and /etc/rc.conf solved the issue.
Then I could start the new kernel and update the pacakges to the latest
versions.

Well of course it all went tits up again because of the VNC problem with
virtualbox-ose-nox11-5.2.20, that will teach me to not migrate stuff to bhyve
;-)

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[Bug 233006] [regression] [patch] bsdtar aborts creation of archive on ENOENT

[bugzilla-noreply]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233006

Eugene Grosbein  changed:

   What|Removed |Added

Summary|[regression] bsdtar aborts  |[regression] [patch] bsdtar
   |creation of archive on  |aborts creation of archive
   |ENOENT  |on ENOENT
   Keywords||patch
 CC||sta...@freebsd.org

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