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

From Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Newsgroups linux.kernel
Subject Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8
Date 2017-06-13 06:40 +0200
Message-ID <tRLMu-3kB-27@gated-at.bofh.it> (permalink)
References (3 earlier) <tRDOX-6O2-29@gated-at.bofh.it> <tRH6a-kl-19@gated-at.bofh.it> <tRLt7-3aP-7@gated-at.bofh.it> <tRLCN-3h8-3@gated-at.bofh.it> <tRLMu-3kB-29@gated-at.bofh.it>
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On Tue, Jun 13, 2017 at 06:34:16AM +0200, Greg Kroah-Hartman wrote:
> On Mon, Jun 12, 2017 at 10:29:20PM -0600, Logan Gunthorpe wrote:
> > 
> > 
> > On 12/06/17 10:18 PM, Greg Kroah-Hartman wrote:
> > > 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?
> > 
> > This is a 0day kernel robot test. I'm not sure the motivations of its
> > design but it seems to be similar to an allyesconfig. So all/most
> > modules are compiled in and allocating their char device regions on boot
> > of a qemu instance.
> 
> Ah, that makes sense.  Well, someone can always work on expanding the
> range of dynamic char major numbers if they are running out of them on a
> real system, I'll gladly take patches for that :)

Or better yet, just turn all char major allocations into dynamic, which
would be really good for test systems.  I thought someone proposed
patches for that a long time ago, but I can't find them anymore.  That
would be the simplest solution here.

thnaks,

greg k-h

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Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable  to handle kernel NULL pointer dereference at 00000000000000a8 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-06-13 06:20 +0200
  Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable to  handle kernel NULL pointer dereference at 00000000000000a8 Logan Gunthorpe <logang@deltatee.com> - 2017-06-13 06:30 +0200
    Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable  to handle kernel NULL pointer dereference at 00000000000000a8 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-06-13 06:40 +0200
      Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable to  handle kernel NULL pointer dereference at 00000000000000a8 Logan Gunthorpe <logang@deltatee.com> - 2017-06-13 18:30 +0200
        Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable  to handle kernel NULL pointer dereference at 00000000000000a8 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-06-13 18:40 +0200
          Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable to  handle kernel NULL pointer dereference at 00000000000000a8 Logan Gunthorpe <logang@deltatee.com> - 2017-06-13 19:50 +0200
            Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable  to handle kernel NULL pointer dereference at 00000000000000a8 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-06-14 07:10 +0200
              Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable to  handle kernel NULL pointer dereference at 00000000000000a8 Logan Gunthorpe <logang@deltatee.com> - 2017-06-14 08:00 +0200
          Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable  to handle kernel NULL pointer dereference at 00000000000000a8 Sven-Haegar Koch <haegar@sdinet.de> - 2017-06-13 21:30 +0200
            Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable  to handle kernel NULL pointer dereference at 00000000000000a8 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-06-14 07:10 +0200
    Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable  to handle kernel NULL pointer dereference at 00000000000000a8 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-06-13 06:40 +0200
      Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable to  handle kernel NULL pointer dereference at 00000000000000a8 Linus Walleij <linus.walleij@linaro.org> - 2017-06-14 12:00 +0200
        Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable to  handle kernel NULL pointer dereference at 00000000000000a8 Logan Gunthorpe <logang@deltatee.com> - 2017-06-14 18:00 +0200

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