Re: [Xen-devel] crash on boot with 4.6.1 on fedora 24

[Kevin Moraga <kmoragas@xxxxxxxxxx>]

On 05/09/2016 11:15 AM, Boris Ostrovsky wrote:
> On 05/09/2016 12:40 PM, Kevin Moraga wrote:
>> On 05/09/2016 09:53 AM, Jan Beulich wrote:
>>>>>> On 09.05.16 at 16:52, <kmoragas@xxxxxxxxxx> wrote:
>>>> On 05/09/2016 04:08 AM, Jan Beulich wrote:
>>>>>>>> On 09.05.16 at 00:51, <kmoragas@xxxxxxxxxx> wrote:
>>>>>> I'm try to compile kernel 4.4.8 (using fedora 23) to run with Xen 4.6.0
>>>>>> and Intel Skylake processor (Intel Core i7-6600U)
>>>>>>
>>>>>> This kernel is crashing almost in the same way as explained in this
>>>>>> thread... But my problem is mainly with Skylake. Because the same
>>>>>> configuration works within another machine but with another processor
>>>>>> (Intel Core i5-3340M). Attached are the boot logs.
>>>>> The address the fault occurs on (ffff8000006bdee0) is bogus, so
>>>>> from the register and stack dump alone I don't think we can derive
>>>>> much. What we'd need is access to the kernel binary used (or
>>>>> really the vmlinux accompanying the vmlinuz that was used), in
>>>>> order to see where exactly the kernel died, and hence where this
>>>>> bogus address originates from. As I understand it this is a kernel
>>>>> you built yourself - can you make said binary from exactly that
>>>>> build available somewhere? 
>>>> Yes I have it. But I get the same crash on various 4.4.X and also with
>>>> 4.5.3.
>>>>
>>>> **https://drive.google.com/open?id=0B6Ol0ob95UxXQV9HM1BWMmhCZ0E 
>>> Well, this doesn't contain the file I'm after (vmlinux), and taking
>>> apart vmlinuz would be quite cumbersome.
>>>
>>> Jan
>>>
>> Oh sorry, here is the link to vmlinux
>>
>> https://drive.google.com/file/d/0B6Ol0ob95UxXN0dDMWM1a29vMEk/view?usp=sharing
>
> This is still vmlinuz but the failure is at
>
> ffffffff81007ef3:       48 3b 1d 4e 2e ec 00    cmp   
> 0xec2e4e(%rip),%rbx        # 0xffffffff81ecad48
> ffffffff81007efa:       73 51                   jae    0xffffffff81007f4d
> ffffffff81007efc:       31 c0                   xor    %eax,%eax
> ffffffff81007efe:       48 8b 15 03 d2 c0 00    mov   
> 0xc0d203(%rip),%rdx        # 0xffffffff81c15108
> ffffffff81007f05:       90                      nop
> ffffffff81007f06:       90                      nop
> ffffffff81007f07:       90                      nop
> ffffffff81007f08:       4c 8b 2c da             mov   
> (%rdx,%rbx,8),%r13    <======
> ffffffff81007f0c:       90                      nop
> ffffffff81007f0d:       90                      nop
> ffffffff81007f0e:       90                      nop
> ffffffff81007f0f:       85 c0                   test   %eax,%eax
> ffffffff81007f11:       78 3a                   js     0xffffffff81007f4d
> ffffffff81007f13:       48 8b 05 ee 11 d2 00    mov   
> 0xd211ee(%rip),%rax        # 0xffffffff81d29108
> ffffffff81007f1a:       49 39 c5                cmp    %rax,%r13
> ffffffff81007f1d:       73 6f                   jae    0xffffffff81007f8e
> ffffffff81007f1f:       48 8b 05 ea 11 d2 00    mov   
> 0xd211ea(%rip),%rax        # 0xffffffff81d29110
> ffffffff81007f26:       4a 8b 04 e8             mov    (%rax,%r13,8),%rax
>
> Any chance you could provide an un-stripped binary or System.map?
Here is the link for System.map

https://drive.google.com/file/d/0B6Ol0ob95UxXYVE4SzdMcENsWWs/view?usp=sharing

-- 
Sincerely,
Kevin Moraga
PGP: F258EDCB
Fingerprint: 3915 A5A9 959C D18F 0A89 B47E FB4B 55F5 F258 EDCB

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