#7317: Segmentation fault in RTS' STM code on git master
------------------------------+---------------------------------------------
Reporter: bgamari | Owner:
Type: bug | Status: new
Priority: normal | Component: Runtime System
Version: 7.7 | Keywords: rts, stm, segv
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: None/Unknown | Testcase:
Blockedby: | Blocking:
Related: |
------------------------------+---------------------------------------------
On ghc 7.7 (ef786b6cbc5f67a673bf8c10be5311317c1e7b88, running on x86_64,
Linux) I'm observing a segmentation fault in compiled code (bayes-stack-ci
from https://github.com/bgamari/bayes-stack/tree/master). The crash
appears to originate in the RTS while aborting a transaction,
{{{
$ gdb --args bayes-stack-ci --nodes=texts --arcs=links --topics=10
--sweeps=sweeps
GNU gdb (GDB) 7.5-ubuntu
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/ben/.cabal/bin/bayes-stack-ci...(no debugging
symbols found)...done.
(gdb) run
Starting program: /home/ben/.cabal/bin/bayes-stack-ci --nodes=texts
--arcs=links --topics=10 --sweeps=sweeps
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffedeff700 (LWP 32590)]
[New Thread 0x7fffed6fe700 (LWP 32591)]
Read 0 stopwords
Read 2 arcs, 3 nodeItems
Starting sampler...
Burning in for 100 samples
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffed6fe700 (LWP 32591)]
0x00007ffff4094743 in merge_read_into () from
/opt/exp/ghc/root-7.7/lib/ghc-7.7.20121009/rts-1.0/libHSrts_thr-
ghc7.7.20121009.so
(gdb) bt
#0 0x00007ffff4094743 in merge_read_into () from
/opt/exp/ghc/root-7.7/lib/ghc-7.7.20121009/rts-1.0/libHSrts_thr-
ghc7.7.20121009.so
#1 0x00007ffff40949db in stmAbortTransaction () from
/opt/exp/ghc/root-7.7/lib/ghc-7.7.20121009/rts-1.0/libHSrts_thr-
ghc7.7.20121009.so
#2 0x00007ffff40a8c3b in stg_atomically_frame_info () from
/opt/exp/ghc/root-7.7/lib/ghc-7.7.20121009/rts-1.0/libHSrts_thr-
ghc7.7.20121009.so
#3 0x0000000000000000 in ?? ()
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7317>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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