Bug 2329744

Summary:	[s390x] ghc9.12/ghc9.14 performance (release) builds segfaults at runtime
Product:	[Fedora] Fedora	Reporter:	Jens Petersen <petersen>
Component:	ghc9.14	Assignee:	Jens Petersen <petersen>
Status:	ASSIGNED ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	petersen
Target Milestone:	---
Target Release:	---
Hardware:	s390x
OS:	Linux
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Embargoed:

Description Jens Petersen 2024-12-01 15:23:07 UTC

ghc9.12 builds are failing on s390x on haddock generation.
9.12 has a new ghc-prim version 0.13.

https://koji.fedoraproject.org/koji/taskinfo?taskID=126420079

Reproducible: Always

Steps to Reproduce:
1. build ghc9.12 haddocks on s390x
Actual Results:  
# cabal-autogen (for _build/stage1/utils/haddock/build/haddock/autogen/cabal_macros.h)
| Run Ghc FindHsDependencies Stage1: utils/haddock/driver/Main.hs => _build/stage1/utils/haddock/.dependencies.mk
| Remove file _build/stage1/utils/haddock/.dependencies.mk.bak
| Run Ghc CompileHs Stage1: utils/haddock/driver/Main.hs => _build/stage1/utils/haddock/build/Main.o
| Run Ghc LinkHs Stage1: _build/stage1/utils/haddock/build/Main.dyn_o => _build/stage1/bin/haddock
/--------------------------------------------------------------------------\
| Successfully built program 'haddock' (Stage1).                           |
| Executable: _build/stage1/bin/haddock                                    |
| Program synopsis: A documentation-generation tool for Haskell libraries. |
\--------------------------------------------------------------------------/
| Run Haddock BuildPackage: libraries/ghc-prim/GHC/CString.hs (and 12 more) => _build/doc/html/libraries/ghc-prim-0.13.0-87f6/ghc-prim.haddock
[ 1 of 13] Compiling GHC.Types        ( libraries/ghc-prim/GHC/Types.hs, nothing )
[ 2 of 13] Compiling GHC.Tuple        ( libraries/ghc-prim/GHC/Tuple.hs, nothing )
[ 3 of 13] Compiling GHC.PrimopWrappers ( _build/stage1/libraries/ghc-prim/build/GHC/PrimopWrappers.hs, nothing )
[ 4 of 13] Compiling GHC.Prim.PtrEq   ( libraries/ghc-prim/GHC/Prim/PtrEq.hs, nothing )
[ 5 of 13] Compiling GHC.Prim.Ext     ( libraries/ghc-prim/GHC/Prim/Ext.hs, nothing )
Development.Shake.cmd, system command failed
Command line: _build/stage1/bin/haddock --verbosity=0 -B_build/stage1/lib --lib=_build/stage1/lib --odir=_build/doc/html/libraries/ghc-prim-0.13.0-87f6 --dump-interface=_build/doc/html/libraries/ghc-prim-0.13.0-87f6/ghc-prim.haddock --html '--title=ghc-prim-0.13.0: GHC primitives' --prologue=_build/doc/html/libraries/ghc-prim-0.13.0-87f6/haddock-prologue.txt --optghc=-D__HADDOCK_VERSION__=2300 --optghc=-hisuf --optghc=dyn_hi --optghc=-osuf --optghc=dyn_o --optghc=-hcsuf --optghc=dyn_hc --optghc=-fPIC --optghc=-dynamic --optghc=-hide-all-packages --optghc=-no-user-package-db '--optghc=-package-env -' '--optghc=-this-unit-id ghc-prim-0.13.0-87f6' '--optghc=-this-package-name ghc-prim' '--optghc=-package-id rts-1.0.2' --optghc=-i --optghc=-i/builddir/build/BUILD/ghc9.12-9.12.0.20241128-build/ghc-9.12.0.20241128/_build/stage1/libraries/ghc-prim/build --optghc=-i/builddir/build/BUILD/ghc9.12-9.12.0.20241128-build/ghc-9.12.0.20241128/_build/stage1/libraries/ghc-prim/build/autogen --optghc=-i/builddir/build/BUILD/ghc9.12-9.12.0.20241128-build/ghc-9.12.0.20241128/libraries/ghc-prim --optghc=-Irts/include --optghc=-I_build/stage1/libraries/ghc-prim/build --optghc=-I/builddir/build/BUILD/ghc9.12-9.12.0.20241128-build/ghc-9.12.0.20241128/rts/include --optghc=-I/builddir/build/BUILD/ghc9.12-9.12.0.20241128-build/ghc-9.12.0.20241128/_build/stage1/rts/build/include --optghc=-optP-include --optghc=-optP_build/stage1/libraries/ghc-prim/build/autogen/cabal_macros.h --optghc=-outputdir --optghc=_build/stage1/libraries/ghc-prim/build --optghc=-this-unit-id --optghc=ghc-prim --optghc=-XHaskell2010 --optghc=-no-global-package-db --optghc=-package-db=/builddir/build/BUILD/ghc9.12-9.12.0.20241128-build/ghc-9.12.0.20241128/_build/stage1/inplace/package.conf.d --optghc=-ghcversion-file=rts/include/ghcversion.h --optghc=-ghcversion-file=rts/include/ghcversion.h --optghc=-this-unit-id --optghc=ghc-prim --optghc=-XHaskell2010 --optghc=-no-global-package-db --optghc=-package-db=/builddir/build/BUILD/ghc9.12-9.12.0.20241128-build/ghc-9.12.0.20241128/_build/stage1/inplace/package.conf.d --optghc=-ghcversion-file=rts/include/ghcversion.h --optghc=-ghcversion-file=rts/include/ghcversion.h --optghc=-Wno-deprecated-flags --optghc=-Wno-trustworthy-safe +RTS -t_build/stage1/haddock-timing-files/ghc-prim.t --machine-readable -RTS --hyperlinked-source --hoogle --quickjump @/tmp/extra-file-86769965844709-6686-11417
Exit code: -11
Stderr:
Build failed.

Expected Results:  
No error

Happens for both -j1 and -j3

Comment 1 Jens Petersen 2024-12-01 15:30:41 UTC

Reported upstream in https://gitlab.haskell.org/ghc/ghc/-/issues/25536

Comment 2 Jens Petersen 2024-12-19 07:48:20 UTC

For now I worked around it by building s390x with quick flavour which does not segfault.

https://gitlab.haskell.org/ghc/ghc/-/issues/25541 has more details

Comment 3 Aoife Moloney 2025-02-26 13:18:29 UTC

This bug appears to have been reported against 'rawhide' during the Fedora Linux 42 development cycle.
Changing version to 42.

Comment 4 Jens Petersen 2025-09-16 12:40:44 UTC

ghc-9.14 alpha2 still failing (now that it is buildable again):

+ rm -rf testghc
+ mkdir testghc
+ echo 'main = putStrLn "Foo"'
+ /builddir/build/BUILD/ghc9.14-9.14.0.20250908-build/BUILDROOT/usr/lib64/ghc-9.14.0.20250908/bin/ghc testghc/foo.hs -o testghc/foo
[1 of 2] Compiling Main             ( testghc/foo.hs, testghc/foo.o )
/var/tmp/rpm-tmp.5LPTer: line 56: 140327 Segmentation fault         (core dumped) $GHC testghc/foo.hs -o testghc/foo
error: Bad exit status from /var/tmp/rpm-tmp.5LPTer (%check)

Comment 5 Jens Petersen 2026-01-02 03:32:36 UTC

So for 9.14.1 on s390x: haddock builds with quick flavour,
but seems I probably already knew this but hadn't re-enabled it.

Performance ghc segfaults for -O2:

+ mkdir testghc
+ echo 'main = putStrLn "Foo"'
+ /builddir/build/BUILD/ghc9.14-9.14.1-build/BUILDROOT/usr/lib64/ghc-9.14.1/bin/ghc testghc/foo.hs -o testghc/foo
[1 of 2] Compiling Main             ( testghc/foo.hs, testghc/foo.o )
[2 of 2] Linking testghc/foo
++ testghc/foo
+ '[' Foo = Foo ']'
+ rm testghc/foo testghc/foo.hi testghc/foo.hs testghc/foo.o
+ echo 'main = putStrLn "Foo"'
+ /builddir/build/BUILD/ghc9.14-9.14.1-build/BUILDROOT/usr/lib64/ghc-9.14.1/bin/ghc testghc/foo.hs -o testghc/foo -O2
[1 of 2] Compiling Main             ( testghc/foo.hs, testghc/foo.o )
/var/tmp/rpm-tmp.Eck17e: line 60: 141584 Illegal instruction        (core dumped) $GHC testghc/foo.hs -o testghc/foo -O2