Re: ce56a86e2a ("x86/mm: Limit mmap() of /dev/mem to valid physical addresses"): kernel BUG at arch/x86/mm/physaddr.c:79!

[Boris Ostrovsky]

On 10/23/2017 10:44 PM, Fengguang Wu wrote:
> Greetings,
>
> 0day kernel testing robot got the below dmesg and the first bad commit is
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>
> commit ce56a86e2ade45d052b3228cdfebe913a1ae7381
> Author:     Craig Bergstrom <craigb@xxxxxxxxxx>
> AuthorDate: Thu Oct 19 13:28:56 2017 -0600
> Commit:     Ingo Molnar <mingo@xxxxxxxxxx>
> CommitDate: Fri Oct 20 09:48:00 2017 +0200
>
>      x86/mm: Limit mmap() of /dev/mem to valid physical addresses

Also note
https://lists.xenproject.org/archives/html/xen-devel/2017-10/msg02935.html

-boris