[Bug 601226] Re: Unable to handle kernel NULL pointer dereference in ppdev module

[Tobin Davis]

Through some slow, extensive testing, I have been able to reproduce this
bug on Lucid with kernel 2.6.33-502-omap by typing " sudo modprobe
parport_pc" in a console.  When looking at the differences between
2.6.33 and 2.6.35 kernels, I noticed ppdev was added (probably in
2.6.34) recently.  While this module doesn't appear to depend on
parport_pc, I have yet to figure out why parport_pc is loaded in the new
image.

Adding "blacklist parport_pc" to /etc/modules.d/blacklist.conf seems to
eliminate the problem, in that the system no longer tries to load that
module.  Not sure if this is a proper fix, but it is an easy one.  The
other solution is a fix from the upstream kernel, and I have not been
able to find a bug report upstream yet (connection issues with
kerneloops.org).

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Unable to handle kernel NULL pointer dereference in ppdev module
https://bugs.launchpad.net/bugs/601226
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