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


  • To: "Wieczorkiewicz, Pawel" <wipawel@xxxxxxxxx>
  • From: Sergey Dyasli <sergey.dyasli@xxxxxxxxxx>
  • Date: Wed, 27 Nov 2019 11:16:00 +0000
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  • Cc: "sergey.dyasli@xxxxxxxxxx >> Sergey Dyasli" <sergey.dyasli@xxxxxxxxxx>, "Paraschiv, Andra-Irina" <andraprs@xxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, "Pohlack, Martin" <mpohlack@xxxxxxxxx>, Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>, "Manthey, Norbert" <nmanthey@xxxxxxxxx>, Martin Mazein <amazein@xxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, "Doebel, Bjoern" <doebel@xxxxxxxxx>
  • Delivery-date: Wed, 27 Nov 2019 11:16:29 +0000
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  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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On 26/11/2019 18:37, Wieczorkiewicz, Pawel wrote:
> It looks like gcc plays the usual dirty tricks with local variables renaming:
> 
> - xen-syms
>   7529: ffff82d0805fed50     8 OBJECT  LOCAL  DEFAULT 4230 lastpage.22857
> - livepatch
>    289: 0000000000000000     8 OBJECT  GLOBAL DEFAULT  UND 
> hvm.c#lastpage.22856
> 
> Then, symbols resolution by name fails..
> 
> Can you please try to build the livepatch module with additional option 
> '—prelink' and give it a try ?

My LP loading error is:

    (XEN) livepatch: lp: Unknown symbol: .LC7

When I pass --prelink to livepatch-build, it complains in a similar way:

    livepatch-build-tools/prelink: ERROR: output.o: livepatch_resolve_symbols: 
80: lookup_local_symbol .LC7 (p2m.c)

--
Thanks,
Sergey

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