[GHC] #14192: Change to 1TB VIRT allocation makes it impossible to core-dump Haskell programs

GHC ghc-devs at haskell.org
Thu Sep 7 16:17:20 UTC 2017


#14192: Change to 1TB VIRT allocation makes it impossible to core-dump Haskell
programs
-------------------------------------+-------------------------------------
        Reporter:  nh2               |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Runtime System    |              Version:  8.0.2
      Resolution:                    |             Keywords:  gdb,
                                     |  debugging
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #9706             |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by nh2):

 @simonmar Could you try to reproduce? Try this:

 {{{
 import Control.Concurrent

 main = threadDelay 1000000000
 }}}

 Compile with `ghc --make thefile.hs` (8.0.2), pet the pid with `ps`, `sudo
 gdb -p thepid`, `generate-core-file`.

 For me (Ubuntu 16.04) that runs forever, writing GB after GB to `core.*`
 in gdb's working directory.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14192#comment:5>
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