Debugging Soft Lockups in FC kernels

[Chuck Ebbert]

Jonathan Underwood wrote:
> Hi,
> 
> With FC-6 I have been seeing a lot of soft lockups with all shipped
> kernels on my Dell x86_64 SMP machines. For example, inserting a USB
> key triggers a soft lockup, as does the VMWare bridged interface. I
> realize the latter taints the kernel, but the former happens with
> untainted FC-6 kernels (i.e. the vmware stuff not installed let alone
> loaded). Anyway, I have reported bugs, detailing the stack trace that
> pops up in dmesg, but I get the feeling this isn't that helpful for
> debugging.
> 
> So, my general question is this: What extra things could I do to provide
> more
> information about soft lockups?

This is bug 234009:

    https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=234009

Everything needed is there, I had only looked at the call traces.
Try removing the SanDisk "value-added" DRM crap. See the latest
bugzilla entry for details.