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Pre-built Linaro with ROS image runs into a kernel panic

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Pre-built Linaro with ROS image runs into a kernel panic

Qandeel Sajid
I downloaded the pre-built image of Linaro with ROS from the Gumstix website and then when I try to use ros and run roscore, it runs in to a kernel panic and then hangs.
I don't understand why or how to stop it.

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Re: Pre-built Linaro with ROS image runs into a kernel panic

jzawodn
Yeah, I wasted a day or so on that myself.  It's a shame those are still being promoted as an easy way to get started.  They seem to be more of an easy way to get frustrated. :-(


On Tue, May 28, 2013 at 10:52 AM, Qandeel Sajid <[hidden email]> wrote:
I downloaded the pre-built image of Linaro with ROS from the Gumstix website and then when I try to use ros and run roscore, it runs in to a kernel panic and then hangs.
I don't understand why or how to stop it.

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Re: Pre-built Linaro with ROS image runs into a kernel panic

adam
In reply to this post by Qandeel Sajid
Hi Qandeel, can you share some details, such as your hardware setup and the output of kernel panic?

Thanks!

Adam

On Tue, May 28, 2013 at 10:52 AM, Qandeel Sajid <[hidden email]> wrote:
I downloaded the pre-built image of Linaro with ROS from the Gumstix website and then when I try to use ros and run roscore, it runs in to a kernel panic and then hangs.
I don't understand why or how to stop it.

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Re: Pre-built Linaro with ROS image runs into a kernel panic

Qandeel Sajid
I'm using a Gumstix with the Overo Stagecoach Board on Ubuntu 12.04 (though virtualbox). 
This time I tried to do a simple "sudo apt-get update" and I got another kernel panic with the error:

root@linaro-alip:~/ros# sudo apt-get update
Err http://ports.ubuntu.com precise InRelease
 
Err http://ppa.launchpad.net precise InRelease
 
Err http://ppa.launchpad.net precise Release.gpg
  Temporary failure resolving 'ppa.launchpad.net'
Err http://ports.ubuntu.com precise Release.gpg
  Temporary failure resolving 'ports.ubuntu.com'
[  594.931762] EXT3-fs error (device mmcblk0p2): ext3_free_blocks_sb: bit already cleared for block 298023
[  594.946044] init: Caught segmentation fault, core dumped
[  594.952636] Aborting journal on device mmcblk0p2.
[  594.960968] EXT3-fs (mmcblk0p2): error: remounting filesystem read-only
[  594.972717] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[  594.972717]




On Tue, May 28, 2013 at 3:37 PM, Adam Lee <[hidden email]> wrote:
Hi Qandeel, can you share some details, such as your hardware setup and the output of kernel panic?

Thanks!

Adam

On Tue, May 28, 2013 at 10:52 AM, Qandeel Sajid <[hidden email]> wrote:
I downloaded the pre-built image of Linaro with ROS from the Gumstix website and then when I try to use ros and run roscore, it runs in to a kernel panic and then hangs.
I don't understand why or how to stop it.

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--
Qandeel Sajid
Undergraduate Research Assistant
Computer Science and Engineering, University of Nevada, Reno

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Re: Pre-built Linaro with ROS image runs into a kernel panic

Florian Vaussard
Hello,

On 05/29/2013 01:12 AM, Qandeel Sajid wrote:

> I'm using a Gumstix with the Overo Stagecoach Board on Ubuntu 12.04
> (though virtualbox).
> This time I tried to do a simple "sudo apt-get update" and I got another
> kernel panic with the error:
>
> /root@linaro-alip:~/ros# sudo apt-get update
> Err http://ports.ubuntu.com precise InRelease
>
> Err http://ppa.launchpad.net precise InRelease
>
> Err http://ppa.launchpad.net precise Release.gpg
>    Temporary failure resolving 'ppa.launchpad.net
> <http://ppa.launchpad.net>'
> Err http://ports.ubuntu.com precise Release.gpg
>    Temporary failure resolving 'ports.ubuntu.com <http://ports.ubuntu.com>'
> [  594.931762] EXT3-fs error (device mmcblk0p2): ext3_free_blocks_sb:
> bit already cleared for block 298023
> [  594.946044] init: Caught segmentation fault, core dumped
> [  594.952636] Aborting journal on device mmcblk0p2.
> [  594.960968] EXT3-fs (mmcblk0p2): error: remounting filesystem read-only
> [  594.972717] Kernel panic - not syncing: Attempted to kill init!
> exitcode=0x0000000b
> [  594.972717] /
>

This looks like more a corrupted ext3 filesystem. I would advise you to
perform

e2fsck -f -p /dev/mmcblk0p2

The kernel panic here is a logical cause due to the inability to access the
filesystem.

Regards,

Florian

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Re: Pre-built Linaro with ROS image runs into a kernel panic

adam
In reply to this post by Qandeel Sajid
Hi Qandeel, 

Can you check your network connection? Try 

    $ ping www.google.com

It looks like your connection isn't live. 

As per the kernel panic, I am not sure what's causing it. Like Florian mentioned, you may have a corrupted file system. 
Right now I am running the same image on my Overo + Tobi setup, and haven't experienced a kernel panic. Are you doing anything else before running apt-get update? 

Thanks and let me know!

Adam


On Tue, May 28, 2013 at 4:14 PM, Qandeel Sajid [via Gumstix] <[hidden email]> wrote:
I'm using a Gumstix with the Overo Stagecoach Board on Ubuntu 12.04 (though virtualbox). 
This time I tried to do a simple "sudo apt-get update" and I got another kernel panic with the error:

root@linaro-alip:~/ros# sudo apt-get update
Err http://ports.ubuntu.com precise InRelease
 
Err http://ppa.launchpad.net precise InRelease
 
Err http://ppa.launchpad.net precise Release.gpg
  Temporary failure resolving 'ppa.launchpad.net'
Err http://ports.ubuntu.com precise Release.gpg
  Temporary failure resolving 'ports.ubuntu.com'
[  594.931762] EXT3-fs error (device mmcblk0p2): ext3_free_blocks_sb: bit already cleared for block 298023
[  594.946044] init: Caught segmentation fault, core dumped
[  594.952636] Aborting journal on device mmcblk0p2.
[  594.960968] EXT3-fs (mmcblk0p2): error: remounting filesystem read-only
[  594.972717] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[  594.972717]




On Tue, May 28, 2013 at 3:37 PM, Adam Lee <[hidden email]> wrote:
Hi Qandeel, can you share some details, such as your hardware setup and the output of kernel panic?

Thanks!

Adam

On Tue, May 28, 2013 at 10:52 AM, Qandeel Sajid <[hidden email]> wrote:
I downloaded the pre-built image of Linaro with ROS from the Gumstix website and then when I try to use ros and run roscore, it runs in to a kernel panic and then hangs.
I don't understand why or how to stop it.

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--
Qandeel Sajid
Undergraduate Research Assistant
Computer Science and Engineering, University of Nevada, Reno

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Re: Pre-built Linaro with ROS image runs into a kernel panic

Qandeel Sajid
It's not connected to the internet but I think it should have just given me a small error instead of a kernel panic. 

Considering what Florian mentioned, I used fsck before I booted into it and the results showed that the file system was fine. After the kernel panic, the file systems were corrupted and I used fsck to fix them. However, when I tried to boot it again after the kernel panic, it would either output junk or stop somewhere at the start of the autoboot process and I had to reinstall the image.

No, I didn't do anything before the sudo apt-get update. Also, in another one of my test runs, the file system error happened automatically without me typing in any command. l

After I download the image I tried to run ros using 
$ cd ~/ros
$ . ./setup.sh
$ roscore
A kernel panic occurs when I do . ./setup.sh and only outputs Kernel panic - not syncing: Attempted to kill init! exitcode=0x000000.

I'm using a 32GB sd card and the image only 8GB of it. The rest is free space. Should the image be resized to fill the whole card? If so, how? I tried using just an 8GB card and booting in to it results in either junk or no autoboot. 

I'm pretty new to hardware so it is possible that I'm forgetting to initialize something or just doing something silly, but I made sure to follow the instruction on the Gumstix website so I'm not sure what that something is. 

Thanks for the help,
Qandeel


On Wed, May 29, 2013 at 10:04 AM, adam <[hidden email]> wrote:
Hi Qandeel, 

Can you check your network connection? Try 

    $ ping www.google.com

It looks like your connection isn't live. 

As per the kernel panic, I am not sure what's causing it. Like Florian mentioned, you may have a corrupted file system. 
Right now I am running the same image on my Overo + Tobi setup, and haven't experienced a kernel panic. Are you doing anything else before running apt-get update? 

Thanks and let me know!

Adam


On Tue, May 28, 2013 at 4:14 PM, Qandeel Sajid [via Gumstix] <[hidden email]> wrote:
I'm using a Gumstix with the Overo Stagecoach Board on Ubuntu 12.04 (though virtualbox). 
This time I tried to do a simple "sudo apt-get update" and I got another kernel panic with the error:

root@linaro-alip:~/ros# sudo apt-get update
Err http://ports.ubuntu.com precise InRelease
 
Err http://ppa.launchpad.net precise InRelease
 
Err http://ppa.launchpad.net precise Release.gpg
  Temporary failure resolving 'ppa.launchpad.net'
Err http://ports.ubuntu.com precise Release.gpg
  Temporary failure resolving 'ports.ubuntu.com'
[  594.931762] EXT3-fs error (device mmcblk0p2): ext3_free_blocks_sb: bit already cleared for block 298023
[  594.946044] init: Caught segmentation fault, core dumped
[  594.952636] Aborting journal on device mmcblk0p2.
[  594.960968] EXT3-fs (mmcblk0p2): error: remounting filesystem read-only
[  594.972717] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[  594.972717]




On Tue, May 28, 2013 at 3:37 PM, Adam Lee <[hidden email]> wrote:
Hi Qandeel, can you share some details, such as your hardware setup and the output of kernel panic?

Thanks!

Adam

On Tue, May 28, 2013 at 10:52 AM, Qandeel Sajid <[hidden email]> wrote:
I downloaded the pre-built image of Linaro with ROS from the Gumstix website and then when I try to use ros and run roscore, it runs in to a kernel panic and then hangs.
I don't understand why or how to stop it.

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Re: Pre-built Linaro with ROS image runs into a kernel panic

Florian Vaussard


On 05/29/2013 10:06 PM, Qandeel Sajid wrote:
> It's not connected to the internet but I think it should have just
> given me a small error instead of a kernel panic.
>

Indeed, this should not be the root cause, but it can be one trigger.

> Considering what Florian mentioned, I used fsck before I booted into
> it and the results showed that the file system was fine. After the
> kernel panic, the file systems were corrupted and I used fsck to fix
> them. However, when I tried to boot it again after the kernel panic,
> it would either output junk or stop somewhere at the start of the
> autoboot process and I had to reinstall the image.
>

So probably the FS was badly damaged during the battle...

> No, I didn't do anything before the sudo apt-get update. Also, in
> another one of my test runs, the file system error happened
> automatically without me typing in any command. l Adam, are you using
> the image from:
> http://gumstix.org/getting-started-guide/241-get-an-image.html ?
>
> After I download the image I tried to run ros using $ cd ~/ros $ .
> ./setup.sh $ roscore from:
> http://wiki.gumstix.org/index.php?title=ROS A kernel panic occurs
> when I do . ./setup.sh and only outputs /Kernel panic - not syncing:
> Attempted to kill init! exitcode=0x000000/.
>

Could it be triggered when a process tries to write on your SD card, maybe?
The kernel panic in itself only indicates a problem with the init process.
In your previous post, init presumably got a segfault. To test this
hypothesis, could you write something on the SD card ? If the SD card
is mounted as your rootfs, you can just do a

touch /root/foobar

and / or try to write some data in it.

According to the OMAP3 TRM, cards up to 32GB should be supported. But maybe
your card is defected? Could you try another one?

> I'm using a 32GB sd card and the image only 8GB of it. The rest is
> free space. Should the image be resized to fill the whole card? If
> so, how? I tried using just an 8GB card and booting in to it results
> in either junk or no autoboot.
>

As I am not sure on how you create your SD card, I am not completely
confident in answering your first question. As for the 8 GB card, it
should work if the image fits on it. Have you tried a second one? When
you mean no autoboot, what exactly? Do you see the output of the
bootloader? The kernel decompressor? Or really nothing? In this case,
the first partition is probably not created / installed correctly. Could
you provide a link to the instructions you followed?

> I'm pretty new to hardware so it is possible that I'm forgetting to
> initialize something or just doing something silly, but I made sure
> to follow the instruction on the Gumstix website so I'm not sure what
> that something is.
>

Regards,

Florian

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Re: Pre-built Linaro with ROS image runs into a kernel panic

adam
In reply to this post by Qandeel Sajid
Qandeel, I agree that you shouldn't get a kernel panic with apt-get update. 
I am using the same image as you, but roscore runs fine. Do you have any peripherals connected? Like USB keyboard? How are you accessing the terminal?

Let me know,

Adam

On Wed, May 29, 2013 at 1:06 PM, Qandeel Sajid <[hidden email]> wrote:
It's not connected to the internet but I think it should have just given me a small error instead of a kernel panic. 

Considering what Florian mentioned, I used fsck before I booted into it and the results showed that the file system was fine. After the kernel panic, the file systems were corrupted and I used fsck to fix them. However, when I tried to boot it again after the kernel panic, it would either output junk or stop somewhere at the start of the autoboot process and I had to reinstall the image.

No, I didn't do anything before the sudo apt-get update. Also, in another one of my test runs, the file system error happened automatically without me typing in any command. l

After I download the image I tried to run ros using 
$ cd ~/ros
$ . ./setup.sh
$ roscore
A kernel panic occurs when I do . ./setup.sh and only outputs Kernel panic - not syncing: Attempted to kill init! exitcode=0x000000.

I'm using a 32GB sd card and the image only 8GB of it. The rest is free space. Should the image be resized to fill the whole card? If so, how? I tried using just an 8GB card and booting in to it results in either junk or no autoboot. 

I'm pretty new to hardware so it is possible that I'm forgetting to initialize something or just doing something silly, but I made sure to follow the instruction on the Gumstix website so I'm not sure what that something is. 

Thanks for the help,
Qandeel


On Wed, May 29, 2013 at 10:04 AM, adam <[hidden email]> wrote:
Hi Qandeel, 

Can you check your network connection? Try 

    $ ping www.google.com

It looks like your connection isn't live. 

As per the kernel panic, I am not sure what's causing it. Like Florian mentioned, you may have a corrupted file system. 
Right now I am running the same image on my Overo + Tobi setup, and haven't experienced a kernel panic. Are you doing anything else before running apt-get update? 

Thanks and let me know!

Adam


On Tue, May 28, 2013 at 4:14 PM, Qandeel Sajid [via Gumstix] <[hidden email]> wrote:
I'm using a Gumstix with the Overo Stagecoach Board on Ubuntu 12.04 (though virtualbox). 
This time I tried to do a simple "sudo apt-get update" and I got another kernel panic with the error:

root@linaro-alip:~/ros# sudo apt-get update
Err http://ports.ubuntu.com precise InRelease
 
Err http://ppa.launchpad.net precise InRelease
 
Err http://ppa.launchpad.net precise Release.gpg
  Temporary failure resolving 'ppa.launchpad.net'
Err http://ports.ubuntu.com precise Release.gpg
  Temporary failure resolving 'ports.ubuntu.com'
[  594.931762] EXT3-fs error (device mmcblk0p2): ext3_free_blocks_sb: bit already cleared for block 298023
[  594.946044] init: Caught segmentation fault, core dumped
[  594.952636] Aborting journal on device mmcblk0p2.
[  594.960968] EXT3-fs (mmcblk0p2): error: remounting filesystem read-only
[  594.972717] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[  594.972717]




On Tue, May 28, 2013 at 3:37 PM, Adam Lee <[hidden email]> wrote:
Hi Qandeel, can you share some details, such as your hardware setup and the output of kernel panic?

Thanks!

Adam

On Tue, May 28, 2013 at 10:52 AM, Qandeel Sajid <[hidden email]> wrote:
I downloaded the pre-built image of Linaro with ROS from the Gumstix website and then when I try to use ros and run roscore, it runs in to a kernel panic and then hangs.
I don't understand why or how to stop it.

------------------------------------------------------------------------------
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browser, app, & servers with just a few lines of code. Try New Relic
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Re: Pre-built Linaro with ROS image runs into a kernel panic

adam
In reply to this post by Florian Vaussard
To write a file to the file system, try this:

$ dd if=/dev/zero of=test.file bs=52428800 count=1

This will create a 50MB file.

Adam

On Wed, May 29, 2013 at 1:59 PM, Florian Vaussard [via Gumstix] <[hidden email]> wrote:


On 05/29/2013 10:06 PM, Qandeel Sajid wrote:
> It's not connected to the internet but I think it should have just
> given me a small error instead of a kernel panic.
>

Indeed, this should not be the root cause, but it can be one trigger.

> Considering what Florian mentioned, I used fsck before I booted into
> it and the results showed that the file system was fine. After the
> kernel panic, the file systems were corrupted and I used fsck to fix
> them. However, when I tried to boot it again after the kernel panic,
> it would either output junk or stop somewhere at the start of the
> autoboot process and I had to reinstall the image.
>

So probably the FS was badly damaged during the battle...

> No, I didn't do anything before the sudo apt-get update. Also, in
> another one of my test runs, the file system error happened
> automatically without me typing in any command. l Adam, are you using
> the image from:
> http://gumstix.org/getting-started-guide/241-get-an-image.html ?
>
> After I download the image I tried to run ros using $ cd ~/ros $ .
> ./setup.sh $ roscore from:
> http://wiki.gumstix.org/index.php?title=ROS A kernel panic occurs
> when I do . ./setup.sh and only outputs /Kernel panic - not syncing:
> Attempted to kill init! exitcode=0x000000/.
>

Could it be triggered when a process tries to write on your SD card, maybe?
The kernel panic in itself only indicates a problem with the init process.
In your previous post, init presumably got a segfault. To test this
hypothesis, could you write something on the SD card ? If the SD card
is mounted as your rootfs, you can just do a

touch /root/foobar

and / or try to write some data in it.

According to the OMAP3 TRM, cards up to 32GB should be supported. But maybe
your card is defected? Could you try another one?

> I'm using a 32GB sd card and the image only 8GB of it. The rest is
> free space. Should the image be resized to fill the whole card? If
> so, how? I tried using just an 8GB card and booting in to it results
> in either junk or no autoboot.
>

As I am not sure on how you create your SD card, I am not completely
confident in answering your first question. As for the 8 GB card, it
should work if the image fits on it. Have you tried a second one? When
you mean no autoboot, what exactly? Do you see the output of the
bootloader? The kernel decompressor? Or really nothing? In this case,
the first partition is probably not created / installed correctly. Could
you provide a link to the instructions you followed?

> I'm pretty new to hardware so it is possible that I'm forgetting to
> initialize something or just doing something silly, but I made sure
> to follow the instruction on the Gumstix website so I'm not sure what
> that something is.
>

Regards,

Florian

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Re: Pre-built Linaro with ROS image runs into a kernel panic

Qandeel Sajid
I used the instructions from the Gumstix website: http://gumstix.org/getting-started-guide/242-create-a-bootable-microsd-card.html to create the sdcard. 
I'm using sudo screen <USB DEVICE NAME> 115200  to boot into the image in a terminal through Ubuntu in VirtualBox on a Macbook. 

I have not idea why but when I ran roscore a couple of times and it worked each time without a kernel panic. BUT, then when I was booted into the system and doing absolutely nothing (no process was running; the terminal was not being used at all) I suddenly got a kernel panic about the file system. I used fsck to clean up the partition for the linaro image and tried to boot into it again but every time it tried to autoboot into the linaro image, it would tell me the filesystem was corrupted and then gave me a kernel panic. Now, I'm reinstalling the image on the sdcard again...

I really don't understand why the roscore worked those few times I tried it, and why I get these kernel panics randomly. 

Is it possible that it's my laptop that's a problem? I haven't tried to boot into the card on another computer yet...

Thanks!
Qandeel


On Wed, May 29, 2013 at 2:05 PM, adam <[hidden email]> wrote:
To write a file to the file system, try this:

$ dd if=/dev/zero of=test.file bs=52428800 count=1

This will create a 50MB file.

Adam

On Wed, May 29, 2013 at 1:59 PM, Florian Vaussard [via Gumstix] <[hidden email]> wrote:


On 05/29/2013 10:06 PM, Qandeel Sajid wrote:
> It's not connected to the internet but I think it should have just
> given me a small error instead of a kernel panic.
>

Indeed, this should not be the root cause, but it can be one trigger.

> Considering what Florian mentioned, I used fsck before I booted into
> it and the results showed that the file system was fine. After the
> kernel panic, the file systems were corrupted and I used fsck to fix
> them. However, when I tried to boot it again after the kernel panic,
> it would either output junk or stop somewhere at the start of the
> autoboot process and I had to reinstall the image.
>

So probably the FS was badly damaged during the battle...

> No, I didn't do anything before the sudo apt-get update. Also, in
> another one of my test runs, the file system error happened
> automatically without me typing in any command. l Adam, are you using
> the image from:
> http://gumstix.org/getting-started-guide/241-get-an-image.html ?
>
> After I download the image I tried to run ros using $ cd ~/ros $ .
> ./setup.sh $ roscore from:
> http://wiki.gumstix.org/index.php?title=ROS A kernel panic occurs
> when I do . ./setup.sh and only outputs /Kernel panic - not syncing:
> Attempted to kill init! exitcode=0x000000/.
>

Could it be triggered when a process tries to write on your SD card, maybe?
The kernel panic in itself only indicates a problem with the init process.
In your previous post, init presumably got a segfault. To test this
hypothesis, could you write something on the SD card ? If the SD card
is mounted as your rootfs, you can just do a

touch /root/foobar

and / or try to write some data in it.

According to the OMAP3 TRM, cards up to 32GB should be supported. But maybe
your card is defected? Could you try another one?

> I'm using a 32GB sd card and the image only 8GB of it. The rest is
> free space. Should the image be resized to fill the whole card? If
> so, how? I tried using just an 8GB card and booting in to it results
> in either junk or no autoboot.
>

As I am not sure on how you create your SD card, I am not completely
confident in answering your first question. As for the 8 GB card, it
should work if the image fits on it. Have you tried a second one? When
you mean no autoboot, what exactly? Do you see the output of the
bootloader? The kernel decompressor? Or really nothing? In this case,
the first partition is probably not created / installed correctly. Could
you provide a link to the instructions you followed?

> I'm pretty new to hardware so it is possible that I'm forgetting to
> initialize something or just doing something silly, but I made sure
> to follow the instruction on the Gumstix website so I'm not sure what
> that something is.
>

Regards,

Florian

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Re: Pre-built Linaro with ROS image runs into a kernel panic

jzawodn
I had similar issues with the pre-build Linaro image on several Overo boards.  It only seemed to work reliably on the SandSTORM.  But on the EarthCOM, FireCOM, and WaterCOM it had frequent kernel panics (often following video corruption when trying to run the graphical desktop).  Those boards that experienced the lock-ups also seemed to corrupt their SDCards somewhat reliably.

Jeremy


On Fri, May 31, 2013 at 12:46 PM, Qandeel Sajid <[hidden email]> wrote:
I used the instructions from the Gumstix website: http://gumstix.org/getting-started-guide/242-create-a-bootable-microsd-card.html to create the sdcard. 
I'm using sudo screen <USB DEVICE NAME> 115200  to boot into the image in a terminal through Ubuntu in VirtualBox on a Macbook. 

I have not idea why but when I ran roscore a couple of times and it worked each time without a kernel panic. BUT, then when I was booted into the system and doing absolutely nothing (no process was running; the terminal was not being used at all) I suddenly got a kernel panic about the file system. I used fsck to clean up the partition for the linaro image and tried to boot into it again but every time it tried to autoboot into the linaro image, it would tell me the filesystem was corrupted and then gave me a kernel panic. Now, I'm reinstalling the image on the sdcard again...

I really don't understand why the roscore worked those few times I tried it, and why I get these kernel panics randomly. 

Is it possible that it's my laptop that's a problem? I haven't tried to boot into the card on another computer yet...

Thanks!
Qandeel


On Wed, May 29, 2013 at 2:05 PM, adam <[hidden email]> wrote:
To write a file to the file system, try this:

$ dd if=/dev/zero of=test.file bs=52428800 count=1

This will create a 50MB file.

Adam

On Wed, May 29, 2013 at 1:59 PM, Florian Vaussard [via Gumstix] <[hidden email]> wrote:


On 05/29/2013 10:06 PM, Qandeel Sajid wrote:
> It's not connected to the internet but I think it should have just
> given me a small error instead of a kernel panic.
>

Indeed, this should not be the root cause, but it can be one trigger.

> Considering what Florian mentioned, I used fsck before I booted into
> it and the results showed that the file system was fine. After the
> kernel panic, the file systems were corrupted and I used fsck to fix
> them. However, when I tried to boot it again after the kernel panic,
> it would either output junk or stop somewhere at the start of the
> autoboot process and I had to reinstall the image.
>

So probably the FS was badly damaged during the battle...

> No, I didn't do anything before the sudo apt-get update. Also, in
> another one of my test runs, the file system error happened
> automatically without me typing in any command. l Adam, are you using
> the image from:
> http://gumstix.org/getting-started-guide/241-get-an-image.html ?
>
> After I download the image I tried to run ros using $ cd ~/ros $ .
> ./setup.sh $ roscore from:
> http://wiki.gumstix.org/index.php?title=ROS A kernel panic occurs
> when I do . ./setup.sh and only outputs /Kernel panic - not syncing:
> Attempted to kill init! exitcode=0x000000/.
>

Could it be triggered when a process tries to write on your SD card, maybe?
The kernel panic in itself only indicates a problem with the init process.
In your previous post, init presumably got a segfault. To test this
hypothesis, could you write something on the SD card ? If the SD card
is mounted as your rootfs, you can just do a

touch /root/foobar

and / or try to write some data in it.

According to the OMAP3 TRM, cards up to 32GB should be supported. But maybe
your card is defected? Could you try another one?

> I'm using a 32GB sd card and the image only 8GB of it. The rest is
> free space. Should the image be resized to fill the whole card? If
> so, how? I tried using just an 8GB card and booting in to it results
> in either junk or no autoboot.
>

As I am not sure on how you create your SD card, I am not completely
confident in answering your first question. As for the 8 GB card, it
should work if the image fits on it. Have you tried a second one? When
you mean no autoboot, what exactly? Do you see the output of the
bootloader? The kernel decompressor? Or really nothing? In this case,
the first partition is probably not created / installed correctly. Could
you provide a link to the instructions you followed?

> I'm pretty new to hardware so it is possible that I'm forgetting to
> initialize something or just doing something silly, but I made sure
> to follow the instruction on the Gumstix website so I'm not sure what
> that something is.
>

Regards,

Florian

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Re: Pre-built Linaro with ROS image runs into a kernel panic

adam
Hello Qandeel and Jeremy, 
I am sorry you are having issues running the image. If you can, can you grab the following image and try if you still experience the same kernel panic? 


You can DD into your 4GB or larger uSD card with the following command:

gzip -dc /path/to/gumstix-console-ros-image-overo.gz | dd of=/dev/YOUR-micro-SD

Once you boot, 
  1. log in as 'root' user.
  2. run these commands:
    export ROS_ROOT=/usr
    export ROS_MASTER_URI=http://localhost:11311
    export CMAKE_PREFIX_PATH=/usr touch /usr/.catkin
  3. finally run:
    roscore

Although I had no problem getting roscore up and running, this image is still early in development, and it is not yet officially Gumstix. However it will likely be the most reliable way to get ROS running in the future. It is composed of three things:
 It's ok if you are not familiar with Yocto Project and Gumstix BSP Layers. Basically, ROS related packages have been added to the Gumstix Yocto Project image, which seems to be more reliable than the Linaro ROS image.

Again, this image is early in development and not yet officially released. 

Let me know if you have any questions

Adam

On Tue, Jun 4, 2013 at 9:02 AM, Jeremy Zawodny <[hidden email]> wrote:
I had similar issues with the pre-build Linaro image on several Overo boards.  It only seemed to work reliably on the SandSTORM.  But on the EarthCOM, FireCOM, and WaterCOM it had frequent kernel panics (often following video corruption when trying to run the graphical desktop).  Those boards that experienced the lock-ups also seemed to corrupt their SDCards somewhat reliably.

Jeremy


On Fri, May 31, 2013 at 12:46 PM, Qandeel Sajid <[hidden email]> wrote:
I used the instructions from the Gumstix website: http://gumstix.org/getting-started-guide/242-create-a-bootable-microsd-card.html to create the sdcard. 
I'm using sudo screen <USB DEVICE NAME> 115200  to boot into the image in a terminal through Ubuntu in VirtualBox on a Macbook. 

I have not idea why but when I ran roscore a couple of times and it worked each time without a kernel panic. BUT, then when I was booted into the system and doing absolutely nothing (no process was running; the terminal was not being used at all) I suddenly got a kernel panic about the file system. I used fsck to clean up the partition for the linaro image and tried to boot into it again but every time it tried to autoboot into the linaro image, it would tell me the filesystem was corrupted and then gave me a kernel panic. Now, I'm reinstalling the image on the sdcard again...

I really don't understand why the roscore worked those few times I tried it, and why I get these kernel panics randomly. 

Is it possible that it's my laptop that's a problem? I haven't tried to boot into the card on another computer yet...

Thanks!
Qandeel


On Wed, May 29, 2013 at 2:05 PM, adam <[hidden email]> wrote:
To write a file to the file system, try this:

$ dd if=/dev/zero of=test.file bs=52428800 count=1

This will create a 50MB file.

Adam

On Wed, May 29, 2013 at 1:59 PM, Florian Vaussard [via Gumstix] <[hidden email]> wrote:


On 05/29/2013 10:06 PM, Qandeel Sajid wrote:
> It's not connected to the internet but I think it should have just
> given me a small error instead of a kernel panic.
>

Indeed, this should not be the root cause, but it can be one trigger.

> Considering what Florian mentioned, I used fsck before I booted into
> it and the results showed that the file system was fine. After the
> kernel panic, the file systems were corrupted and I used fsck to fix
> them. However, when I tried to boot it again after the kernel panic,
> it would either output junk or stop somewhere at the start of the
> autoboot process and I had to reinstall the image.
>

So probably the FS was badly damaged during the battle...

> No, I didn't do anything before the sudo apt-get update. Also, in
> another one of my test runs, the file system error happened
> automatically without me typing in any command. l Adam, are you using
> the image from:
> http://gumstix.org/getting-started-guide/241-get-an-image.html ?
>
> After I download the image I tried to run ros using $ cd ~/ros $ .
> ./setup.sh $ roscore from:
> http://wiki.gumstix.org/index.php?title=ROS A kernel panic occurs
> when I do . ./setup.sh and only outputs /Kernel panic - not syncing:
> Attempted to kill init! exitcode=0x000000/.
>

Could it be triggered when a process tries to write on your SD card, maybe?
The kernel panic in itself only indicates a problem with the init process.
In your previous post, init presumably got a segfault. To test this
hypothesis, could you write something on the SD card ? If the SD card
is mounted as your rootfs, you can just do a

touch /root/foobar

and / or try to write some data in it.

According to the OMAP3 TRM, cards up to 32GB should be supported. But maybe
your card is defected? Could you try another one?

> I'm using a 32GB sd card and the image only 8GB of it. The rest is
> free space. Should the image be resized to fill the whole card? If
> so, how? I tried using just an 8GB card and booting in to it results
> in either junk or no autoboot.
>

As I am not sure on how you create your SD card, I am not completely
confident in answering your first question. As for the 8 GB card, it
should work if the image fits on it. Have you tried a second one? When
you mean no autoboot, what exactly? Do you see the output of the
bootloader? The kernel decompressor? Or really nothing? In this case,
the first partition is probably not created / installed correctly. Could
you provide a link to the instructions you followed?

> I'm pretty new to hardware so it is possible that I'm forgetting to
> initialize something or just doing something silly, but I made sure
> to follow the instruction on the Gumstix website so I'm not sure what
> that something is.
>

Regards,

Florian

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Code-level diagnostics for performance bottlenecks with <2% overhead
Download for free and get started troubleshooting in minutes.
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_______________________________________________
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Re: Pre-built Linaro with ROS image runs into a kernel panic

Larry Martin
Adam wrote:
>Hello Qandeel and Jeremy,
>I am sorry you are having issues running the image. If you can, can you grab the following image and try if you still experience the same kernel panic?
>Gumstix Yocto ROS - https://s3-us-west-2.amazonaws.com/yocto/Releases/2013-06-14/overo/ros-dev/gumstix-console-ros-image-overo.gz

I have not had a chance to try that image, but I ran across this in the Linaro docs, which may shed some light on the problem:

https://wiki.linaro.org/Resources/HowTo/KernelDeploy:
>Linaro packaged kernel builds for OMAP use the Thumb-2 instruction set, which is not supported by OMAP2
> platforms. If you want to enable this configuration, you must do the following:

I'm not sure how that maps to Air vs. Air Storm, but it seemed like the kind of thing that catches people.

Thanks,
Larry
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Re: Pre-built Linaro with ROS image runs into a kernel panic

Ash Charles
On Thu, Jun 20, 2013 at 6:20 AM, Larry Martin <[hidden email]> wrote:
>>Linaro packaged kernel builds for OMAP use the Thumb-2 instruction set,
> which is not supported by OMAP2
>> platforms. If you want to enable this configuration, you must do the
>> following:
OMAP3 does support Thumb2 though.
>
> I'm not sure how that maps to Air vs. Air Storm, but it seemed like the kind
> of thing that catches people.
Both Air and Air Storm are OMAP3 devices so we should be okay here.

--Ash

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Re: Pre-built Linaro with ROS image runs into a kernel panic

jzawodn
In reply to this post by Larry Martin
I have also not had a chance to try that yet.  I'm hoping to this weekend.

Thanks!

Jeremy


On Thu, Jun 20, 2013 at 6:20 AM, Larry Martin <[hidden email]> wrote:
Adam wrote:
>Hello Qandeel and Jeremy,
>I am sorry you are having issues running the image. If you can, can you
grab the following image and try if you still experience the same kernel
panic?
>Gumstix Yocto ROS -
https://s3-us-west-2.amazonaws.com/yocto/Releases/2013-06-14/overo/ros-dev/gumstix-console-ros-image-overo.gz

I have not had a chance to try that image, but I ran across this in the
Linaro docs, which may shed some light on the problem:

https://wiki.linaro.org/Resources/HowTo/KernelDeploy:
>Linaro packaged kernel builds for OMAP use the Thumb-2 instruction set,
which is not supported by OMAP2
> platforms. If you want to enable this configuration, you must do the
> following:

I'm not sure how that maps to Air vs. Air Storm, but it seemed like the kind
of thing that catches people.

Thanks,
Larry



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