Xen 4.10 breakage with buster (was Re: [xen-4.10-testing test] 151033: regressions - trouble: blocked/fail/pass/starved)

[Ian Jackson <ian.jackson@xxxxxxxxxx>]

Ian Jackson writes ("Xen 4.10 breakage with buster (was Re: [xen-4.10-testing 
test] 151033: regressions - trouble: blocked/fail/pass/starved)"):
> >  test-amd64-amd64-xl-qcow2    10 debian-di-install        fail REGR. vs. 
> > 150039
> >  test-amd64-amd64-pygrub      10 debian-di-install        fail REGR. vs. 
> > 150039
> >  test-amd64-i386-xl-raw       10 debian-di-install        fail REGR. vs. 
> > 150039
> 
>   domainbuilder: detail: xc_dom_find_loader: trying Linux bzImage loader ... 
>   domainbuilder: detail: XZ: Saw data stream end
>   domainbuilder: detail: _xc_try_lzma_decode: XZ decompress OK, 0x4cd8f0 -> 
> 0x1a7779c
>   domainbuilder: detail: loader probe OK
>   ...
>   domainbuilder: detail: xc_dom_alloc_segment:   module0      : 
> 0xffffffff82c00000 -> 0xffffffff82c02000  (pfn 0x2c00 + 0x2 pages)
>   xc: error: panic: xc_dom_core.c:387: xc_dom_do_gunzip: inflate failed 
> (rc=-5): Internal error
>   libxl: error: libxl_dom.c:744:libxl__build_dom: xc_dom_build_image failed: 
> No such file or directory
> 
> http://logs.test-lab.xenproject.org/osstest/logs/151033/test-amd64-amd64-pygrub/10.ts-debian-di-install.log
> 
> ????  Anyone have any ideas ?  I would have guessed that this was an
> incompatibility between pygrub and the boot config made by the new
> pygrub but
>    git-log origin/staging-4.10..origin/stable-4.11 tools/pygrub/
> suggests not.

Andy suggested on IRC that there were some compression fixes which had
perhaps not been backported far enough.

I think that's

   lz4: fix system halt at boot kernel on x86_64
   14b62ab3e5a79816edfc6dd3afce1bb68c106ac5
   master commit: 5d90ff79542ab9c6eebe5c315c68c196bcf353b9

   lz4: refine commit 9143a6c55ef7 for the 64-bit case
   6561994b87af3e9cd28ee99c42e8b2697621687d
   master commit: 2d7572cdfa4d481c1ca246aa1ce5239ccae7eb59

Anyone have any objection to me sending those to 4.10 and maybe 4.9 ?
They apply cleanly in both cases.

Ian.