Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8

On Mon, Jun 12, 2017 at 05:34:59PM -0600, Logan Gunthorpe wrote:

1) The test we are looking at is overrunning the dynamic char dev major
numbers by a lot. On a successful run, it gets down to 216 where the
limit is 234. Thus, there are 18 too many major numbers assigned and the
fact that this test used to work is really just luck. (I've cc'd
developers from 49db08c3 for this issue.)

What test causes so many major numbers to be allocated?  Is this
in-kernel test code?  Do you really have a system that requires so many
different drivers that all want a dynamic char major?

thanks,

gre gk-h