[CentOS] kernel panic/abort during boot

Johnny Hughes johnny at centos.org
Thu Dec 22 23:53:13 UTC 2011


On 12/22/2011 05:44 PM, fred smith wrote:
> On Thu, Dec 22, 2011 at 04:56:42PM -0600, Johnny Hughes wrote:
>> On 12/22/2011 04:46 PM, fred smith wrote:
>>> On Wed, Dec 21, 2011 at 08:30:23PM -0700, Corey Henderson wrote:
>>>> On 12/21/2011 8:23 PM, fred smith wrote:
>>> <snip>
>>>>
>>>> If you come up empty (all the same kernel modules exist in both) then 
>>>> it's likely a bug in some kernel module. The "emergency_shell" part of 
>>>> dracut may be useful in debug this. When you reboot, during the grub 
>>>> menu, add this to the kernel's command line:
>>>>
>>>> rdbreak=cmdline
>>>>
>>>> During the boot process, you'll get dropped to a command line, and can 
>>>> run some of the basic commands provided intisde the initramfs.
>>>>
>>>> If you look at the "init" file inside the initramfs, you can see the 
>>>> different points you'll end up with with different arguments to rdbreak; 
>>>> ie, pre-udev, initqueue, etc.
>>>
>>> Having gotten nowhere, so far, I tried the above. I haven't any clue
>>> what would be helpful to do when it hits a "breakpoint", but I just
>>> typed "exit" to drop back out of the shell, a couple of times. it
>>> eventually got to where it said "starting udev" then a few seconds
>>> later the dump appeard on the screen again. but there seemed to be
>>> more of it shown so I took a photo of it. If you feel like taking a look
>>> to see if you can figure it out, you can find it at:
>>>
>>> http://users.rcn.com/fredricksmith/dump.jpg
>>>
>>> I don't know what any of it means, except that it mentions modprobe,
>>> and it appears that the stack trace has something to do with sound,
>>> perhaps modprobe croaks when loading/munging drivers for sound.
>>>
>>> If anyone of you can make more sense of it than I, I'd appreciate
>>> the help.
>>
>> There is a new kernel building right now that might
>> fix something ... though I do not see anything specifically about your cpu.
>>
>> Here is the errata link:
>>
>> http://rhn.redhat.com/errata/RHSA-2011-1849.html
>>
>> If everything builds it should be released in a couple of hours.
>>
> 
> so it'll show up in a release channel (or CR repo) ?
> 
> 
It will be in 6.2/updates/

Still building right now.

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