#14329: GHC 8.2.1 segfaults while bootstrapping master -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: bug | Status: new Priority: highest | Milestone: 8.2.2 Component: Compiler | Version: 8.2.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D4075 Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * status: closed => new * resolution: fixed => Comment: It looks like the issue fixed in comment:2 isn't the only problem. We are still seeing segmentation faults on Harbormaster due to out-of-memory conditions. For instance, {{{ (gdb) run Starting program: /home/ben/ghc/inplace/lib/bin/ghc-stage1 -B/home/ben/ghc/inplace/lib -hisuf hi -osuf o -hcsuf hc -static -O0 -H64m -Wall -fllvm-fill-undef-with-garbage -Werror -Iincludes -Iincludes/dist -Iincludes/dist-derivedconstants/header -Iincludes/dist- ghcconstants/header -this-unit-id ghc-8.5 -hide-all-packages -i -icompiler/backpack -icompiler/basicTypes -icompiler/cmm -icompiler/codeGen -icompiler/coreSyn -icompiler/deSugar -icompiler/ghci -icompiler/hsSyn -icompiler/iface -icompiler/llvmGen -icompiler/main -icompiler/nativeGen -icompiler/parser -icompiler/prelude -icompiler/profiling -icompiler/rename -icompiler/simplCore -icompiler/simplStg -icompiler/specialise -icompiler/stgSyn -icompiler/stranal -icompiler/typecheck -icompiler/types -icompiler/utils -icompiler/vectorise -icompiler/stage2/build -Icompiler/stage2/build -icompiler/stage2/build/./autogen -Icompiler/stage2/build/./autogen -Icompiler/. -Icompiler/parser -Icompiler/utils -Icompiler/../rts/dist/build -Icompiler/stage2 -optP-DGHCI -optP-include -optPcompiler/stage2/build/./autogen/cabal_macros.h -package-id base-4.11.0.0 -package-id deepseq-1.4.3.0 -package-id directory-1.3.1.5 -package-id process-1.6.2.0 -package-id bytestring-0.10.8.2 -package-id binary-0.8.5.1 -package-id time-1.8.0.2 -package-id containers-0.5.10.2 -package-id array-0.5.2.0 -package-id filepath-1.4.1.2 -package-id template-haskell-2.13.0.0 -package-id hpc-0.6.0.3 -package-id transformers-0.5.5.0 -package-id ghc-boot-8.5 -package-id ghc-boot-th-8.5 -package-id ghci-8.5 -package-id unix-2.7.2.2 -package-id terminfo-0.4.1.1 -Wall -Wno-name-shadowing -Wnoncanonical-monad-instances -Wnoncanonical- monadfail-instances -Wnoncanonical-monoid-instances -this-unit-id ghc -XHaskell2010 -XNoImplicitPrelude -optc-DTHREADED_RTS -DGHCI_TABLES_NEXT_TO_CODE -DSTAGE=2 -Rghc-timing -O -dcore-lint -dno- debug-output -Wcpp-undef -no-user-package-db -rtsopts -Wnoncanonical- monad-instances -odir compiler/stage2/build -hidir compiler/stage2/build -stubdir compiler/stage2/build -dynamic-too -c compiler/types/OptCoercion.hs -o compiler/stage2/build/OptCoercion.o -dyno compiler/stage2/build/OptCoercion.dyn_o -fforce-recomp [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Program received signal SIGSEGV, Segmentation fault. ---Type <return> to continue, or q <return> to quit--- 0x0000000002fcfe40 in alloc_mega_group () (gdb) bt #0 0x0000000002fcfe40 in alloc_mega_group () #1 0x0000000002fd038d in allocGroupOnNode () #2 0x0000000002fe3dff in alloc_todo_block () #3 0x0000000002fe3f56 in todo_block_full () #4 0x0000000000406497 in evacuate () #5 0x00000000004074ec in scavenge_block () #6 0x0000000002fe3726 in scavenge_loop () #7 0x0000000002fd0ed8 in GarbageCollect () #8 0x0000000002fc5eeb in scheduleDoGC () #9 0x0000000002fc68ce in scheduleWaitThread () #10 0x0000000002fcf010 in hs_main () #11 0x0000000000422684 in main () (gdb) }}} while building 1cb12eae648c964c411f4c83730f3db05e409f48. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14329#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler