Re: [Xen-devel] livepatch-build-tools regression

["Wieczorkiewicz, Pawel" <wipawel@xxxxxxxxx>]

> On 20. Nov 2019, at 12:42, Sergey Dyasli <sergey.dyasli@xxxxxxxxxx> wrote:
> 
> On 19/11/2019 17:21, Wieczorkiewicz, Pawel wrote:
>> 
>> 
>>> On 18. Nov 2019, at 18:41, Sergey Dyasli <sergey.dyasli@xxxxxxxxxx> wrote:
>>> 
>>> On 18/11/2019 17:28, Wieczorkiewicz, Pawel wrote:
>>>> 
>>>> Could you build the lp with debug (-d) and provide me with the 
>>>> create-diff-object.log file?
>>>> 
>>> 
>>> I've attached the log. Btw, I think I provided all the necessary information
>>> for others to repeat my experiment.
>>> 
>> 
>> Sorry for another request, but I do not seem to be able to reproduce this 
>> locally.
>> Could you send me the livepatch module binary that fails to upload?
> 
> That's interesting. I've attached the binary that my system produces.
> What version of gcc do you use?

The version used was: gcc (GCC) 7.2.1 20170915

But I have finally managed to reproduce the issue with:
1. gcc (Ubuntu 6.5.0-2ubuntu1~18.04) 6.5.0 20181026
2. gcc-7 (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0

I think it is not related to the commit:
commit 854a7ca60e35 "create-diff-object: Do not include all .rodata sections"

I managed to reproduce it also with earlier version commit:
"0c10457 Remove section alignment requirement"

But this time a different symbol causes the failure:

(XEN) livepatch: 0001-live-patch: Unknown symbol: hvm.c#lastpage.22856

> 
> --
> Thanks,
> Sergey
> <0001-live-patch-stripped.livepatch>

Best Regards,
Pawel Wieczorkiewicz






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