[fixed] boot fails regularly

boulde · 2011-07-24 09:23:30

Hi,

since a couple of weeks, my system fails to boot. After the "Loading modules" message and instead of the change of resolution (kms ?), I get a series of messages that end with something like this and all leds are blinking:

[ 5.xxxxx] [<ffffffff813e8ec2>] ? system_call_fastpath+0x16/0x1b

I shut down my laptop (dell studio 15) with the button and boot again, and then I have no problem to boot.
I did not found these messages in the logs so I can not paste them. The problem is almost systematic since several days.

Where should I look to have more info on this issue (nothing in the log) ? kernel related or something else, I don't know, init scripts, udev ?

Last edited by boulde (2011-08-24 21:51:06)

litemotiv · 2011-07-24 09:35:08

That looks like a hard kernel lock, you might want to search the kernel bugtracker for similar reports: https://bugzilla.kernel.org

boulde · 2011-07-28 20:45:46

after 2 days without the issue, yesterday It took 2 attempt before I can boot, and today no problem ...
I looked at the kernel bugzilla, but I don't know how to diagnose (?) the problem and maybe find a similar one.
All I can say is that it happens between the "Loading Modules" and "Waiting udev events to be processed".

tavianator · 2011-07-28 20:56:41

It will be hard to diagnose without the whole backtrace. Take a picture or something.

boulde · 2011-07-28 21:54:52

you're right, I will take a photo next time.

boulde · 2011-07-29 19:47:56

here is the picture: http://pix.toile-libre.org/?img=1311968785.jpg

tavianator · 2011-07-29 20:30:21

Sadly that isn't the entire backtrace, the top got cut off. Can you add vga=791 or something to the kernel command line to increase the size of the console?

boulde · 2011-07-30 12:15:21

with vga=791: http://pix.toile-libre.org/?img=1312028043.jpg
but still no entire I guess ?

tavianator · 2011-07-30 17:19:43

Wow, that is the longest backtrace I've ever seen. If you have another computer, you could use netconsole to get the whole trace.

tomegun · 2011-07-31 23:54:15

boulde wrote:

after 2 days without the issue, yesterday It took 2 attempt before I can boot, and today no problem ...
I looked at the kernel bugzilla, but I don't know how to diagnose (?) the problem and maybe find a similar one.
All I can say is that it happens between the "Loading Modules" and "Waiting udev events to be processed".

This might mean that the loading of a module is the culprit. To figure out which module it is, I suggest doing something like this:

Boot successfully, and note down all your loaded modules ("lsmod") (tedious, I know, but I couldn't think of a better way).

Boot with a shell as your init (in this way you don't run any of the initscripts): add "init=/bin/bash" to your kernel command line.

Once booted, start udev: "/sbin/udevd --daemon"

I assume that it has not yet crashed, if starting udev caused a crash, then try again without starting udev. We will NOT trigger udev to load modules automatically, but rather load them manually.

Go through your list of modules and do "modprobe <modulename>" for each of them. Hopefully one of them will cause a crash, and then at least you know who the culprit is, and you can pass this on to lkml, or look through the kernel bugzilla for related problems.

falconindy · 2011-08-01 00:21:19

/me takes a wild guess...

it's ite_cir, which looks like a network driver of some sort. If you're not using it, blacklist it.

Last edited by falconindy (2011-08-01 00:21:41)

boulde · 2011-08-02 09:13:57

Thanks all for your answers, I will try to explore this before going in holidays !
For netconsole, I'm not sure to understand how to use it. Should I put the «modprobe netconsole netconsole="@/,@10.0.0.2/;@/eth1,6892@10.0.0.3/"» in modprobe.conf ?

boulde · 2011-08-02 12:47:44

ok, I booted with the init=/bin/bash and played with modprobe.
modprobe ite_cir several times gave me segfaults and once a backtrace (and this time modprobe -r didn't return control).
So I will blacklist ite-circ and see what happens. (it seems to be related to Infrared Remote Control which I don't use).

tomegun · 2011-08-02 12:53:30

@boulde: i should have asked earlier: are you using the kernel from [testing] or [core]? Could you try to reproduce with the other one?

I think it might be worth to report his to b.k.o.

boulde · 2011-08-02 13:04:42

I use the kernel from core, did not try with the 3.0 (as I go on holidays in 2 days without internet, I prefer not to update to testing now).

boulde · 2011-08-06 12:37:33

Hi,
after blacklisting ite_circ, I still have the bug : http://pix.toile-libre.org/?img=1312633790.jpg
This time with a message "kernel panic - not syncing: Fatal exception in interrupt"

tomegun · 2011-08-06 12:46:56

That looks like something to send upstream. However, 2.6.39 is EOL now, so I guess it would be more interesting if you were able to reproduce with 3.0.1 (testing)...

boulde · 2011-08-06 13:02:30

yes I am waiting the upgrade to 3.0 before reporting it.

boulde · 2011-08-24 21:50:49

Hi,
after some holidays :-) and a few days testing the 3.0 kernel, I did not see the bug !
thanks all for your help

bernarcher · 2011-08-24 22:07:12

boulde, please mark the thread as [SOLVED] by editing the title of your first post.

Edit: Oh, I see you marked it [fixed]. Ok so.

Last edited by bernarcher (2011-08-24 22:09:55)

Arch Linux

#1 2011-07-24 09:23:30

[fixed] boot fails regularly

#2 2011-07-24 09:35:08

Re: [fixed] boot fails regularly

#3 2011-07-28 20:45:46

Re: [fixed] boot fails regularly

#4 2011-07-28 20:56:41

Re: [fixed] boot fails regularly

#5 2011-07-28 21:54:52

Re: [fixed] boot fails regularly

#6 2011-07-29 19:47:56

Re: [fixed] boot fails regularly

#7 2011-07-29 20:30:21

Re: [fixed] boot fails regularly

#8 2011-07-30 12:15:21

Re: [fixed] boot fails regularly

#9 2011-07-30 17:19:43

Re: [fixed] boot fails regularly

#10 2011-07-31 23:54:15

Re: [fixed] boot fails regularly

#11 2011-08-01 00:21:19

Re: [fixed] boot fails regularly

#12 2011-08-02 09:13:57

Re: [fixed] boot fails regularly

#13 2011-08-02 12:47:44

Re: [fixed] boot fails regularly

#14 2011-08-02 12:53:30

Re: [fixed] boot fails regularly

#15 2011-08-02 13:04:42

Re: [fixed] boot fails regularly

#16 2011-08-06 12:37:33

Re: [fixed] boot fails regularly

#17 2011-08-06 12:46:56

Re: [fixed] boot fails regularly

#18 2011-08-06 13:02:30

Re: [fixed] boot fails regularly

#19 2011-08-24 21:50:49

Re: [fixed] boot fails regularly

#20 2011-08-24 22:07:12

Re: [fixed] boot fails regularly

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