Bug#1121177: openblas breaks multiple autopkgtest on ppc64el

Tue Nov 25 14:41:49 GMT 2025

Control: tags -1 + help

Le samedi 22 novembre 2025 à 12:03 +0100, Paul Gevers a écrit :
> Source: openblas
> Control: found -1 openblas/0.3.30+ds-3
> Severity: serious
> Tags: sid forky
> User: debian-ci at lists.debian.org
> Usertags: breaks
> Control: affects -1 src:dolfin src:gemma src:openmolcas src:xtensor-blas
> 
> Dear maintainer(s),
> 
> With a recent upload of openblas the autopkgtests of dolfin, gemma, 
> openmolcas, and xtensor-blas fail on ppc64el in testing when their 
> autopkgtest is run with the binary packages of openblas from unstable. 
> It passes when run with only packages from testing. In tabular form (for 
> dolfin):
> 
>                         pass            fail
> openblas               from testing    0.3.30+ds-3
> dolfin                 from testing    2019.2.0~legacy20240219.1c52e83-24
> all others             from testing    from testing
> 
> I copied some of the output at the bottom of this report.
> 
> Currently this regression is blocking the migration of openblas to 
> testing [1]. Can you please investigate the situation?
> 
> Someone pointed me at https://github.com/OpenMathLib/OpenBLAS/pull/5463 
> which may completely unrelated, but at least include changes for ppc64el.

I talked to upstream about the problem (in an issue that was initially
about a FTBFS, due to a failure in OpenBLAS own testsuite, which has
since been fixed):
https://github.com/OpenMathLib/OpenBLAS/issues/5372#issuecomment-3353517450

Unfortunately upstream does not really know where the test failures in
third-party software come from. In particular, they can’t replicate the
issue (note that they tried with more recent git snapshot than version
0.3.30), and I couldn’t either with Debian version 0.3.30+ds-3 (tried
on the ppc64el Debian porterbox).

At this point, fixing this issue is beyond my time budget and skills (I
know next to zero about PowerPC, and the issue is probably due to some
changes to PowerPC assembly code). CC’ing the Debian PowerPC porters,
with the hope that they can help.

> [1] https://qa.debian.org/excuses.php?package=openblas
> 
> https://ci.debian.net/data/autopkgtest/testing/ppc64el/d/dolfin/66420095/log.gz
> 
> 284s       Start 72: demo_singular-poisson_serial
> 285s 29/49 Test #72: demo_singular-poisson_serial 
> ..............Subprocess aborted***Exception:   1.17 sec
> 285s terminate called after throwing an instance of 'std::runtime_error'
> 285s   what():  285s 285s *** 
> -------------------------------------------------------------------------
> 285s *** DOLFIN encountered an error. If you are not able to resolve 
> this issue
> 285s *** using the information listed below, you can ask for help at
> 285s ***
> 285s ***     https://fenicsproject.discourse.group/
> 285s ***
> 285s *** Remember to include the error message listed below and, if 
> possible,
> 285s *** include a *minimal* running example to reproduce the error.
> 285s ***
> 285s *** 
> -------------------------------------------------------------------------
> 285s *** Error:   Unable to successfully call PETSc function 'KSPSolve'.
> 285s *** Reason:  PETSc error code is: 76 (Error in external library).
> 285s *** Where:   This error was encountered inside 
> ./dolfin/la/PETScKrylovSolver.cpp.
> 285s *** Process: 0
> 285s *** 285s *** DOLFIN version: 2019.2.0.64.dev0
> 285s *** Git changeset:  debian_2019.2.0~legacy20240219.1c52e83-24
> 285s *** 
> -------------------------------------------------------------------------
> 285s 285s [ci-325-a328d227:14164] *** Process received signal ***
> 285s [ci-325-a328d227:14164] Signal: Aborted (6)
> 285s [ci-325-a328d227:14164] Signal code:  (-6)
> 285s [ci-325-a328d227:14164] [ 0] 
> linux-vdso64.so.1(__kernel_sigtramp_rt64+0x0) [0x3fffbb002494]
> 285s [ci-325-a328d227:14164] [ 1] 
> /lib/powerpc64le-linux-gnu/libc.so.6(+0xafd3c) [0x3fffb807fd3c]
> 285s [ci-325-a328d227:14164] [ 2] 
> /lib/powerpc64le-linux-gnu/libc.so.6(gsignal+0x2c) [0x3fffb801663c]
> 285s [ci-325-a328d227:14164] [ 3] 
> /lib/powerpc64le-linux-gnu/libc.so.6(abort+0x28) [0x3fffb7ff65f0]
> 285s [ci-325-a328d227:14164] [ 4] 
> /lib/powerpc64le-linux-gnu/libstdc++.so.6(_ZN9__gnu_cxx27__verbose_terminate_handlerEv+0x158) 
> [0x3fffb83ae858]
> 285s [ci-325-a328d227:14164] [ 5] 
> /lib/powerpc64le-linux-gnu/libstdc++.so.6(+0x119ad4) [0x3fffb83a9ad4]
> 285s [ci-325-a328d227:14164] [ 6] 
> /lib/powerpc64le-linux-gnu/libstdc++.so.6(_ZSt9terminatev+0x20) 
> [0x3fffb835527c]
> 285s [ci-325-a328d227:14164] [ 7] 
> /lib/powerpc64le-linux-gnu/libstdc++.so.6(__cxa_throw+0x7c) [0x3fffb83a9fec]
> 285s [ci-325-a328d227:14164] [ 8] 
> /lib/powerpc64le-linux-gnu/libdolfin.so.2019.2t64(_ZNK6dolfin6Logger12dolfin_errorENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_S6_i+0xc1c) 
> [0x3fffbada1bbc]
> 285s [ci-325-a328d227:14164] [ 9] 
> /lib/powerpc64le-linux-gnu/libdolfin.so.2019.2t64(_ZN6dolfin12dolfin_errorENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES5_S5_z+0x184) 
> [0x3fffbad9e354]
> 285s [ci-325-a328d227:14164] [10] 
> /lib/powerpc64le-linux-gnu/libdolfin.so.2019.2t64(_ZN6dolfin11PETScObject11petsc_errorEiNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_+0x370) 
> [0x3fffbad72cc0]
> 285s [ci-325-a328d227:14164] [11] 
> /lib/powerpc64le-linux-gnu/libdolfin.so.2019.2t64(_ZN6dolfin17PETScKrylovSolver5solveERNS_11PETScVectorERKS1_b+0x1c44) 
> [0x3fffbad57ad4]
> 285s [ci-325-a328d227:14164] [12] 
> /lib/powerpc64le-linux-gnu/libdolfin.so.2019.2t64(_ZN6dolfin17PETScKrylovSolver5solveERNS_13GenericVectorERKS1_+0x58) 
> [0x3fffbad58068]
> 285s [ci-325-a328d227:14164] [13] 
> /tmp/autopkgtest-lxc.qr0i5fy5/downtmp/build.bm6/src/dolfin-demo/documented/singular-poisson/cpp/demo_singular-poisson(+0xb5c8) 
> [0x13e65b5c8]
> 285s [ci-325-a328d227:14164] [14] 
> /lib/powerpc64le-linux-gnu/libc.so.6(+0x26f0c) [0x3fffb7ff6f0c]
> 285s [ci-325-a328d227:14164] [15] 
> /lib/powerpc64le-linux-gnu/libc.so.6(__libc_start_main+0x1ac) 
> [0x3fffb7ff714c]
> 285s [ci-325-a328d227:14164] *** End of error message ***

-- 
⢀⣴⠾⠻⢶⣦⠀  Sébastien Villemot
⣾⠁⢠⠒⠀⣿⡁  Debian Developer
⢿⡄⠘⠷⠚⠋⠀  https://sebastien.villemot.name
⠈⠳⣄⠀⠀⠀⠀  https://www.debian.org
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