Re: linux-next: Tree for Apr 3 (objtool)

[Randy Dunlap]

On 4/4/19 10:16 AM, Josh Poimboeuf wrote:
> On Wed, Apr 03, 2019 at 03:29:17PM -0700, Randy Dunlap wrote:
>> On 4/3/19 1:53 PM, Josh Poimboeuf wrote:
>>> On Wed, Apr 03, 2019 at 08:02:43AM -0700, Randy Dunlap wrote:
>>>> On 4/3/19 1:24 AM, Stephen Rothwell wrote:
>>>>> Hi all,
>>>>>
>>>>> Changes since 20190402:
>>>>>
>>>>
>>>> on x86_64:
>>>>
>>>> arch/x86/entry/entry_64.o: warning: objtool: .entry.text+0x909: unreachable instruction
>>>
>>> Your .o file looks odd.  I can't recreate the issue when I build the
>>> same object.
>>
>> This (randconfig) build has tracing enabled?  Could that have anything to do
>> with it?
> 
> No, I can't see any reasonable explanation for it other than a buggy
> toolchain.
> 
>> The randconfig file is attached.
> 
> I still can't recreate with your randconfig.
> 
>>> Did the issue only just now show up?  Can you bisect it?  What version
>>> of binutils are you using?
>>
>>> ld -v
>> GNU ld (GNU Binutils; openSUSE Leap 42.3) 2.31.1.20180828-19
>>
>>
>> My build logs show it first occurred (in my randconfig builds) in
>> linux-next-20190204.
> 
> It seems really odd.  Can you do a bisect?
> 

Sure, I'll give it a try.

-- 
~Randy