From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Logan Gunthorpe <logang@deltatee.com>
Cc: Bjorn Helgaas <helgaas@kernel.org>,
kernel test robot <fengguang.wu@intel.com>,
Linus Torvalds <torvalds@linux-foundation.org>, LKP <lkp@01.org>,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-doc@vger.kernel.org, linux-pci@vger.kernel.org,
linux-kernel@vger.kernel.org, Bjorn Helgaas <bhelgaas@google.com>,
wfg@linux.intel.com, Alan Cox <alan@linux.intel.com>,
Arnd Bergmann <arnd@arndb.de>,
Linus Walleij <linus.walleij@linaro.org>,
David Airlie <airlied@linux.ie>,
David Herrmann <dh.herrmann@gmail.com>,
Daniel Vetter <daniel.vetter@ffwll.ch>
Subject: Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8
Date: Tue, 13 Jun 2017 18:35:08 +0200 [thread overview]
Message-ID: <20170613163508.GA31961@kroah.com> (raw)
In-Reply-To: <8462abee-0a7f-00fb-6111-1f78362ea3f7@deltatee.com>
On Tue, Jun 13, 2017 at 10:25:40AM -0600, Logan Gunthorpe wrote:
>
>
> On 12/06/17 10:35 PM, Greg Kroah-Hartman wrote:
> > 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.
>
> Would people not complain about that? I would not be surprised if some
> crazy application is using hard coded major numbers in userspace. So
> such a change could potentially break userspace...
For char devices, I doubt it, but we can't take the chance, which is why
you make it an option. Then, it's enabled for 'allmodconfig' builds,
which helps testers out.
thanks,
greg k-h
WARNING: multiple messages have this Message-ID (diff)
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: lkp@lists.01.org
Subject: Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8
Date: Tue, 13 Jun 2017 18:35:08 +0200 [thread overview]
Message-ID: <20170613163508.GA31961@kroah.com> (raw)
In-Reply-To: <8462abee-0a7f-00fb-6111-1f78362ea3f7@deltatee.com>
[-- Attachment #1: Type: text/plain, Size: 792 bytes --]
On Tue, Jun 13, 2017 at 10:25:40AM -0600, Logan Gunthorpe wrote:
>
>
> On 12/06/17 10:35 PM, Greg Kroah-Hartman wrote:
> > 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.
>
> Would people not complain about that? I would not be surprised if some
> crazy application is using hard coded major numbers in userspace. So
> such a change could potentially break userspace...
For char devices, I doubt it, but we can't take the chance, which is why
you make it an option. Then, it's enabled for 'allmodconfig' builds,
which helps testers out.
thanks,
greg k-h
WARNING: multiple messages have this Message-ID (diff)
From: gregkh@linuxfoundation.org (Greg Kroah-Hartman)
To: linux-arm-kernel@lists.infradead.org
Subject: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8
Date: Tue, 13 Jun 2017 18:35:08 +0200 [thread overview]
Message-ID: <20170613163508.GA31961@kroah.com> (raw)
In-Reply-To: <8462abee-0a7f-00fb-6111-1f78362ea3f7@deltatee.com>
On Tue, Jun 13, 2017 at 10:25:40AM -0600, Logan Gunthorpe wrote:
>
>
> On 12/06/17 10:35 PM, Greg Kroah-Hartman wrote:
> > 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.
>
> Would people not complain about that? I would not be surprised if some
> crazy application is using hard coded major numbers in userspace. So
> such a change could potentially break userspace...
For char devices, I doubt it, but we can't take the chance, which is why
you make it an option. Then, it's enabled for 'allmodconfig' builds,
which helps testers out.
thanks,
greg k-h
next prev parent reply other threads:[~2017-06-13 16:35 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-04 12:33 [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8 kernel test robot
2017-06-04 12:33 ` kernel test robot
2017-06-04 12:33 ` kernel test robot
2017-06-06 17:55 ` Bjorn Helgaas
2017-06-06 17:55 ` Bjorn Helgaas
2017-06-06 17:55 ` Bjorn Helgaas
2017-06-06 19:02 ` Logan Gunthorpe
2017-06-12 20:08 ` Bjorn Helgaas
2017-06-12 20:08 ` Bjorn Helgaas
2017-06-12 23:34 ` Logan Gunthorpe
2017-06-12 23:34 ` Logan Gunthorpe
2017-06-13 4:18 ` Greg Kroah-Hartman
2017-06-13 4:18 ` Greg Kroah-Hartman
2017-06-13 4:18 ` Greg Kroah-Hartman
2017-06-13 4:29 ` Logan Gunthorpe
2017-06-13 4:29 ` Logan Gunthorpe
2017-06-13 4:34 ` Greg Kroah-Hartman
2017-06-13 4:34 ` Greg Kroah-Hartman
2017-06-13 4:34 ` Greg Kroah-Hartman
2017-06-13 4:35 ` Greg Kroah-Hartman
2017-06-13 4:35 ` Greg Kroah-Hartman
2017-06-13 4:35 ` Greg Kroah-Hartman
2017-06-13 16:25 ` Logan Gunthorpe
2017-06-13 16:25 ` Logan Gunthorpe
2017-06-13 16:35 ` Greg Kroah-Hartman [this message]
2017-06-13 16:35 ` Greg Kroah-Hartman
2017-06-13 16:35 ` Greg Kroah-Hartman
2017-06-13 17:47 ` Logan Gunthorpe
2017-06-13 17:47 ` Logan Gunthorpe
2017-06-14 5:00 ` Greg Kroah-Hartman
2017-06-14 5:00 ` Greg Kroah-Hartman
2017-06-14 5:00 ` Greg Kroah-Hartman
2017-06-14 5:55 ` Logan Gunthorpe
2017-06-14 5:55 ` Logan Gunthorpe
2017-06-13 19:13 ` Sven-Haegar Koch
2017-06-13 19:13 ` Sven-Haegar Koch
2017-06-13 19:13 ` Sven-Haegar Koch
2017-06-13 19:13 ` Sven-Haegar Koch
2017-06-14 5:01 ` Greg Kroah-Hartman
2017-06-14 5:01 ` Greg Kroah-Hartman
2017-06-14 5:01 ` Greg Kroah-Hartman
2017-06-14 9:59 ` Linus Walleij
2017-06-14 9:59 ` Linus Walleij
2017-06-14 9:59 ` Linus Walleij
2017-06-14 15:49 ` Logan Gunthorpe
2017-06-14 15:49 ` Logan Gunthorpe
2017-06-13 11:48 ` Alan Cox
2017-06-13 11:48 ` Alan Cox
2017-06-13 11:48 ` Alan Cox
2017-06-13 16:16 ` Logan Gunthorpe
2017-06-13 16:16 ` Logan Gunthorpe
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