Re: kernel: BUG: soft lockup detected on CPU#0!

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Thanks for the info Jussi, and I will definitely try that, but I don't understand why the stack trace shows a pile of smbfs calls, and how that might relate to the USB controller. But then again, maybe that's why I'm not a kernel developer.

Jussi Hamalainen wrote:

On Tue, 28 Mar 2006, Paul Risenhoover wrote:

I have been experiencing a number of networking issues with three new machines I have purchased. They are Dell SC1425 machines, each with two 64-bit processors. I have attached the dmesg log to this email for your review.


Although not it is possibly not directly related to your problem, I've also experienced soft lockups on CPU#0 with a Dell PE1850 running Xen unstable and 2.6.16. The BUG caused the machine to instantly crash and was 100% reproducible by starting an ftp transfer from
a fast server.

After spending a good portion of the day pulling my hair out, I figured out that the USB controller in Dell PowerEdges is really flaky and had caused similar problems before. Disabling the USB controller from BIOS made my problem go away.



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