Kernel crashes after plugging in a USB stick

[Hadmut Danisch]

Binary package hint: linux-image-2.6.27-9-generic

Hi,

strange behavior of my ubuntu machine: AMD Dual Core machine, with amd64 ubuntu and kernel linux-image-2.6.27-9-generic.

I've prepared an 8 GB USB stick (pendrive) on that machine with a new filesystem, assigned partition type 0c (W95 FAT32 LBA) to the first partition (there's just that one on the stick), created a dos fs with mkdosfs /dev/sdc1 (which created a FAT32) and put the stick into a WinXP machine to copy some data on it. I then plugged the stick back into the ubuntu machine, and it *immediatly* crashed: Screen filled with garbage, machine dead, powering itself off after pressing the reset button. Could repeat that after complete cold boot, seems to crash every time I plug in that stick.

Same stick works without any problems on my x86 intrepid notebook with a 2.6.24-19-generic kernel (didn't try a 2.6.27 on that second machine yet, I had this older kernel for other reasons, e.g. because the external VGA port and the WLAN don't work on this notebook with a 2.6.27).

I am currently in a hurry and out of home tomorrow, so I can't respond before saturday.

I'll do some more checks on saturday or sunday, if this is not yet a known problem. However, it may allow to crash machines just by plugging in a USB stick. Maybe do even worse things.

[Jamie Strandboge (jdstrand)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.

[Jeremy Foshee (jeremyfoshee)]

Hi Hadmut,

This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/lucid.

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 322875

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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[Hadmut Danisch (hadmut)]

Jeremy Foshee wrote:
> Hi Hadmut,
>
> This bug was reported a while ago and there hasn't been any activity in
> it recently. We were wondering if this is still an issue? Can you try
> with the latest development release of Ubuntu? ISO CD images are
> available from http://cdimage.ubuntu.com/releases/lucid.
>
Hi Jeremy,

sorry, I am currently on vacation and won't be back home before end of
next week.

regards
Hadmut

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]