Re: [igt-dev] ✗ GitLab.Pipeline: warning for Dockerfile.debian*: Switch over to buster

Ser, Simon
2019-07-22T08:20:35Z

On Mon, 2019-07-22 at 09:03 +0100, Guillaume Tucker wrote:
> On 15/07/2019 09:13, Arkadiusz Hiler wrote:
> > On Fri, Jul 12, 2019 at 09:57:17AM +0100, Guillaume Tucker wrote:
> > > On 08/07/2019 13:21, Arkadiusz Hiler wrote:
> > > > On Mon, Jul 08, 2019 at 07:25:14AM +0000, Patchwork wrote:
> > > > > == Series Details ==
> > > > >
> > > > > Series: Dockerfile.debian*: Switch over to buster
> > > > > URL : https://patchwork.freedesktop.org/series/63339/
> > > > > State : warning
> > > > >
> > > > > == Summary ==
> > > > >
> > > > > Pipeline status: FAILED.
> > > > >
> > > > > See https://gitlab.freedesktop.org/gfx-ci/igt-ci-tags/pipelines/47180 for more details.
> > > > >
> > > > > == Logs ==
> > > > >
> > > > > For more details see: https://gitlab.freedesktop.org/gfx-ci/igt-ci-tags/pipelines/47180
> > > >
> > > > Seems like it's failing for MIPS realiably:
> > > >
> > > > https://gitlab.freedesktop.org/gfx-ci/igt-ci-tags/-/jobs/405401
> > > >
> > > >
> > > > One example of many sigsegvs:
> > > > --- command ---
> > > > /usr/bin/qemu-mips /builds/gfx-ci/igt-ci-tags/build/lib/tests/igt_invalid_subtest_name
> > > > --- stdout ---
> > > > IGT-Version: 1.24-NO-GIT (mips) (Linux: 4.9.0-9-amd64 mips)
> > > > --- stderr ---
> > > > (igt_invalid_subtest_name:92) igt_core-CRITICAL: Invalid subtest name "# invalid name !".
> > > > igt_invalid_subtest_name: ../lib/igt_core.c:1714: igt_exit: Assertion `!test_with_subtests || skipped_one || succeeded_one || failed_one' failed.
> > > > Received signal SIGABRT.
> > > > Stack trace:
> > > > Received signal SIGSEGV.
> > > > Stack trace:
> > > > qemu: uncaught target signal 11 (Segmentation fault) - core dumped
> > > > igt_invalid_subtest_name: ../lib/tests/igt_tests_common.h:46: internal_assert_wsignaled: Assertion `WIFSIGNALED(wstatus) && WTERMSIG(wstatus) == signal' failed.
> > > > qemu: uncaught target signal 6 (Aborted) - core dumped
> > > > -------
> > > >
> > > > Other architectures seem to be fine and the same thing is passing on
> > > > stretch.
> > > >
> > > > Guillaume, do you have any idea what may be going on before I dig into
> > > > it?
> > >
> > > I've had a look, the segfault is coming from libunwind when
> > > trying to do a stack trace. The version of libunwind in Debian
> > > Stretch (1.1) had large parts unimplemented for MIPS, and while
> > > the one in Buster (1.2.1) seems to be able to fully support that
> > > it also appears to have a bug causing the segfault.
> > >
> > > There have been a few fixes upstream in libunwind for MIPS, maybe
> > > some of these need to be back-ported to the package in Debian.
> > > I've built the 1.2.1 version from source and can reproduce the
> > > problem, I can try the latest version to see if there has been a
> > > fix for that next week. And if that's the case, ask the Debian
> > > package maintainer to add some fixes. If the latest upstream
> > > version still doesn't work, well I guess that would be something
> > > to report to the MIPS people who worked on libunwind.
> > >
> > > Guillaume
> >
> > Thanks for investigating this! Poke me here or on the IRC (ivyl) when
> > you think it might be working with buster. I'll give the series another
> > spin.
>
> Sorry for the slow reply, I've now found a fix for it upstream:
>
> https://github.com/libunwind/libunwind/commit/fd44f596b2dad70acdc81cc76983585f888e045d
>
> and I've sent a bug report in Debian to ask for this patch to be
> added to the package in Buster. I don't know how long it will
> take for this to land but I'll ping you when I get some news.

Excellent. Thanks for this fix and the heads-up! :)

> Guillaume
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