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Groups > linux.kernel > #1313709
| From | Dan Williams <dan.j.williams@intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] fix CONFIG_IO_STRICT_DEVMEM, do not enable by default |
| Date | 2016-01-21 00:50 +0100 |
| Message-ID | <qTaFI-5bZ-17@gated-at.bofh.it> (permalink) |
| References | <qT9zY-4u9-5@gated-at.bofh.it> <qTacF-4ZC-13@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, Jan 20, 2016 at 3:12 PM, Kees Cook <keescook@chromium.org> wrote:
> On Wed, Jan 20, 2016 at 2:37 PM, Dan Williams <dan.j.williams@intel.com> wrote:
>> Larry reports: "My PowerBook G4 Aluminum with a 32-bit PPC processor
>> fails to boot for the 4.4-git series". This is likely due to X still
>> needing /dev/mem access on this platform.
>>
>> CONFIG_IO_STRICT_DEVMEM is not yet safe to turn on when
>> CONFIG_STRICT_DEVMEM=y. Remove the default so that old configurations
>> do not change behavior.
>>
>> Fixes: 90a545e98126 ("restrict /dev/mem to idle io memory ranges")
>> Reported-by: Larry Finger <Larry.Finger@lwfinger.net>
>> Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
>> Link: http://marc.info/?l=linux-kernel&m=145332012023825&w=2
>> Cc: Arnd Bergmann <arnd@arndb.de>
>> Cc: Ingo Molnar <mingo@redhat.com>
>> Cc: Kees Cook <keescook@chromium.org>
>> Cc: Russell King <linux@arm.linux.org.uk>
>> Cc: Andrew Morton <akpm@linux-foundation.org>
>> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
>
> Acked-by: Kees Cook <keescook@chromium.org>
>
Thanks!
> This should probably be CC: stable, yes?
No, this breakage is new for the current merge window.
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[PATCH] fix CONFIG_IO_STRICT_DEVMEM, do not enable by default Dan Williams <dan.j.williams@intel.com> - 2016-01-20 23:40 +0100
Re: [PATCH] fix CONFIG_IO_STRICT_DEVMEM, do not enable by default Kees Cook <keescook@chromium.org> - 2016-01-21 00:20 +0100
Re: [PATCH] fix CONFIG_IO_STRICT_DEVMEM, do not enable by default Dan Williams <dan.j.williams@intel.com> - 2016-01-21 00:50 +0100
Re: [PATCH] fix CONFIG_IO_STRICT_DEVMEM, do not enable by default Dan Williams <dan.j.williams@intel.com> - 2016-01-21 01:00 +0100
Re: [PATCH] fix CONFIG_IO_STRICT_DEVMEM, do not enable by default Kees Cook <keescook@chromium.org> - 2016-01-21 01:00 +0100
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