[GHC] #8406: Invalid object in isRetainer() or Segfault

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[GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
----------------------------------+----------------------------------
       Reporter:  crockeea        |             Owner:
           Type:  bug             |            Status:  new
       Priority:  normal          |         Milestone:
      Component:  Compiler        |           Version:  7.6.3
       Keywords:                  |  Operating System:  Linux
   Architecture:  x86_64 (amd64)  |   Type of failure:  Runtime crash
     Difficulty:  Unknown         |         Test Case:
     Blocked By:                  |          Blocking:
Related Tickets:                  |
----------------------------------+----------------------------------
 When compiling with
 -rtsopts -threaded -prof -fprof-auto -caf-all

 and running with
 -N4 -hr

 I get a "Segmentation fault" every time.

 If I run with -N4 -qg1 -hr, I either get a segfault or
 internal error: Invalid object in isRetainer(): 40

 When the segfault happens, it happens quickly. If the segfault doesn't
 happen, the program runs for about 5 seconds and I get "invalid object"
 error (always 40).

 Without -hr, I have never gotten a segfault.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
----------------------------------+----------------------------------
        Reporter:  crockeea       |            Owner:
            Type:  bug            |           Status:  new
        Priority:  normal         |        Milestone:
       Component:  Compiler       |          Version:  7.6.3
      Resolution:                 |         Keywords:
Operating System:  Linux          |     Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash  |       Difficulty:  Unknown
       Test Case:                 |       Blocked By:
        Blocking:                 |  Related Tickets:
----------------------------------+----------------------------------

Comment (by crockeea):

 I forgot to point out that if I don't specify either of "-N4" or "-qg1"
 (but still compile with -threaded), the program runs as expected and does
 not crash.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:1>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
----------------------------------+----------------------------------
        Reporter:  crockeea       |            Owner:
            Type:  bug            |           Status:  new
        Priority:  normal         |        Milestone:
       Component:  Compiler       |          Version:  7.6.3
      Resolution:                 |         Keywords:
Operating System:  Linux          |     Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash  |       Difficulty:  Unknown
       Test Case:                 |       Blocked By:
        Blocking:                 |  Related Tickets:
----------------------------------+----------------------------------

Comment (by thoughtpolice):

 Does this happen for all programs, or only a specific one? Can you provide
 a small testcase, if possible? Thanks!

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:2>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
----------------------------------+----------------------------------
        Reporter:  crockeea       |            Owner:
            Type:  bug            |           Status:  new
        Priority:  normal         |        Milestone:
       Component:  Compiler       |          Version:  7.6.3
      Resolution:                 |         Keywords:
Operating System:  Linux          |     Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash  |       Difficulty:  Unknown
       Test Case:                 |       Blocked By:
        Blocking:                 |  Related Tickets:
----------------------------------+----------------------------------

Comment (by crockeea):

 It just happened for one program I'm profiling at the moment. It's quite
 large, so I may not be able to get a small test case.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:3>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
----------------------------------+----------------------------------
        Reporter:  crockeea       |            Owner:
            Type:  bug            |           Status:  new
        Priority:  normal         |        Milestone:
       Component:  Compiler       |          Version:  7.6.3
      Resolution:                 |         Keywords:
Operating System:  Linux          |     Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash  |       Difficulty:  Unknown
       Test Case:                 |       Blocked By:
        Blocking:                 |  Related Tickets:
----------------------------------+----------------------------------
Changes (by bgamari):

 * cc: bgamari@… (added)


--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:4>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
----------------------------------+----------------------------------
        Reporter:  crockeea       |            Owner:
            Type:  bug            |           Status:  infoneeded
        Priority:  normal         |        Milestone:
       Component:  Compiler       |          Version:  7.6.3
      Resolution:                 |         Keywords:
Operating System:  Linux          |     Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash  |       Difficulty:  Unknown
       Test Case:                 |       Blocked By:
        Blocking:                 |  Related Tickets:
----------------------------------+----------------------------------
Changes (by simonmar):

 * status:  new => infoneeded


Comment:

 We had a similar problem a while back - #5909, but that was fixed in
 7.6.2.  Are you sure you're using 7.6.3?

 If so, we'll need some repro instructions.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:5>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
----------------------------------+----------------------------------
        Reporter:  crockeea       |            Owner:
            Type:  bug            |           Status:  infoneeded
        Priority:  normal         |        Milestone:
       Component:  Compiler       |          Version:  7.6.3
      Resolution:                 |         Keywords:
Operating System:  Linux          |     Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash  |       Difficulty:  Unknown
       Test Case:                 |       Blocked By:
        Blocking:                 |  Related Tickets:
----------------------------------+----------------------------------

Comment (by crockeea):

 I had the problem in 7.6.2, then specifically upgraded to 7.6.3 in the
 hopes it would be fixed. No dice.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:6>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
-------------------------------------+-------------------------------------
              Reporter:  crockeea    |            Owner:
                  Type:  bug         |           Status:  infoneeded
              Priority:  normal      |        Milestone:  7.10.1
             Component:  Runtime     |          Version:  7.6.3
  System                             |         Keywords:
            Resolution:              |     Architecture:  x86_64 (amd64)
      Operating System:  Linux       |       Difficulty:  Unknown
       Type of failure:  Runtime     |       Blocked By:
  crash                              |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------
Changes (by thomie):

 * cc: simonmar (added)
 * component:  Compiler => Runtime System


Comment:

 crockeea: could you try to compile your program with 7.8.3? Without a
 testcase it's hard to do anything. Should we keep this ticket open?

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:8>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
-------------------------------------+-------------------------------------
              Reporter:  crockeea    |            Owner:
                  Type:  bug         |           Status:  infoneeded
              Priority:  normal      |        Milestone:  7.10.1
             Component:  Runtime     |          Version:  7.6.3
  System                             |         Keywords:
            Resolution:              |     Architecture:  x86_64 (amd64)
      Operating System:  Linux       |       Difficulty:  Unknown
       Type of failure:  Runtime     |       Blocked By:
  crash                              |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------

Comment (by crockeea):

 I won't be able to come up with an testcase anymore. My guess is that
 there was (is?) a problem with -hr and multithreading, but I no longer
 have the code and the problem does not occur in 7.8.3 with a simple
 single-threaded example.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:9>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
-------------------------------------+-------------------------------------
              Reporter:  crockeea    |            Owner:
                  Type:  bug         |           Status:  closed
              Priority:  normal      |        Milestone:  7.10.1
             Component:  Runtime     |          Version:  7.6.3
  System                             |         Keywords:
            Resolution:  worksforme  |     Architecture:  x86_64 (amd64)
      Operating System:  Linux       |       Difficulty:  Unknown
       Type of failure:  Runtime     |       Blocked By:
  crash                              |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------
Changes (by thomie):

 * status:  infoneeded => closed
 * resolution:   => worksforme


Comment:

 Let's close it then, things have changed quite a bit since 7.6.3. If the
 problems shows up again, please do re-open.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:10>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
-------------------------------------+-------------------------------------
        Reporter:  crockeea          |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:  7.10.1
       Component:  Runtime System    |                 Version:  7.8.3
      Resolution:                    |                Keywords:
Operating System:  Linux             |            Architecture:  x86_64
 Type of failure:  Runtime crash     |  (amd64)
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------
Changes (by JamesM):

 * status:  closed => new
 * version:  7.6.3 => 7.8.3
 * resolution:  worksforme =>


Old description:

> When compiling with
> -rtsopts -threaded -prof -fprof-auto -caf-all
>
> and running with
> -N4 -hr
>
> I get a "Segmentation fault" every time.
>
> If I run with -N4 -qg1 -hr, I either get a segfault or
> internal error: Invalid object in isRetainer(): 40
>
> When the segfault happens, it happens quickly. If the segfault doesn't
> happen, the program runs for about 5 seconds and I get "invalid object"
> error (always 40).
>
> Without -hr, I have never gotten a segfault.

New description:

 When compiling with
 -rtsopts -threaded -prof -fprof-auto -caf-all

 and running with
 -N4 -hr

 I get a "Segmentation fault" every time.

 If I run with -N4 -qg1 -hr, I either get a segfault or
 internal error: Invalid object in isRetainer(): 40

 When the segfault happens, it happens quickly. If the segfault doesn't
 happen, the program runs for about 5 seconds and I get "invalid object"
 error (always 40).

 Without -hr, I have never gotten a segfault.

 Edit (1/2015): This is still occurring under multiple threads in ghc
 7.8.3.
 GHC options: -Wall -prof -fprof-auto -threaded -rtsopts
 Runtime Options: -N4 -hr -L1000

--

Comment:

 This is still occurring for me. However, it is only problematic when using
 multiple threads changing from -N4 to -N1 removes the issue:

 par-simulator: internal error: Invalid object in isRetainer(): 39
     (GHC version 7.8.3 for x86_64_apple_darwin)
     Please report this as a GHC bug:
 http://www.haskell.org/ghc/reportabug
 Abort trap: 6

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:11>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
-------------------------------------+-------------------------------------
        Reporter:  crockeea          |                   Owner:
            Type:  bug               |                  Status:  infoneeded
        Priority:  normal            |               Milestone:  7.10.2
       Component:  Runtime System    |                 Version:  7.8.3
      Resolution:                    |                Keywords:
Operating System:  Linux             |            Architecture:  x86_64
 Type of failure:  Runtime crash     |  (amd64)
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------
Changes (by thoughtpolice):

 * status:  new => infoneeded
 * milestone:  7.10.1 => 7.10.2


Comment:

 Can we still get a testcase if at all possible? As long as it has
 reproducible build instructions - without that, there's very little hope
 of us being able to do much here.

 FWIW, it looks unlikely this will make 7.10, so I'm moving out to a later
 milestone for a future bugfix release.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:12>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
-------------------------------------+-------------------------------------
        Reporter:  crockeea          |                   Owner:
            Type:  bug               |                  Status:  infoneeded
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Runtime System    |                 Version:  7.8.3
      Resolution:                    |                Keywords:
Operating System:  Linux             |            Architecture:  x86_64
 Type of failure:  Runtime crash     |  (amd64)
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------
Changes (by thoughtpolice):

 * milestone:  7.10.2 => 7.12.1


Comment:

 (Moving to 7.12.1, as lack of updates means this is unlikely to be slated
 for 7.10.2)

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:13>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
-------------------------------------+-------------------------------------
        Reporter:  crockeea          |                   Owner:
            Type:  bug               |                  Status:  infoneeded
        Priority:  normal            |               Milestone:  8.0.1
       Component:  Runtime System    |                 Version:  7.8.3
      Resolution:                    |                Keywords:
Operating System:  Linux             |            Architecture:  x86_64
                                     |  (amd64)
 Type of failure:  Runtime crash     |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
-------------------------------------+-------------------------------------

Comment (by pallly):

 I have the same problem, here is my code: http://hub.darcs.net/pallly/hdur

 When I run the executable with +RTS -hr, it crashes with the "Invalid
 object in isRetainer(): 8". (Maybe you'll need to press the 'o' key).

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:15>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

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#8406: Invalid object in isRetainer() or Segfault
-----------------------------------+--------------------------------------
        Reporter:  crockeea        |                Owner:
            Type:  bug             |               Status:  infoneeded
        Priority:  normal          |            Milestone:  8.0.1
       Component:  Runtime System  |              Version:  7.8.3
      Resolution:                  |             Keywords:
Operating System:  Linux           |         Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash   |            Test Case:
      Blocked By:                  |             Blocking:
 Related Tickets:                  |  Differential Rev(s):
       Wiki Page:                  |
-----------------------------------+--------------------------------------

Comment (by thomie):

 pally: I can not reproduce your problem. Which platform are you on? And
 how long does it take before your program crashes?

 Here's what I tried:
   * I'm using Ubuntu 14.04 Linux, x86-64.
   * I installed the following packages, after some trial and error:
 `libfftw3-dev libopenal-dev qtchooser qtbase5-dev qtdeclarative5-dev
 qtdeclarative5-qtquick2-plugin darcs`
   * `cabal sandbox init`
   * `darcs get http://hub.darcs.net/pallly/hdur`
   * `darcs get http://hub.darcs.net/komadori/HsQML`
   * `cabal install HsQML/`
   * `cabal install hdur/`
   * `.cabal-sandbox/bin/hdur` # Fails with some module not found error
 (frustrating! please fix, cabal install should have caught that)
   * I then installed `qml-module-qtquick2` from 15.04 (vivid). This also
 upgrade most other qt related packages
   * `.cabal-sandbox/bin/hdur`
   * I see a grey window with the subtext "foobar". When I press 'o', a
 black squiggly line appears on a white background.
   * No crash.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:16>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
-----------------------------------+--------------------------------------
        Reporter:  crockeea        |                Owner:
            Type:  bug             |               Status:  infoneeded
        Priority:  normal          |            Milestone:
       Component:  Runtime System  |              Version:  7.8.3
      Resolution:                  |             Keywords:
Operating System:  Linux           |         Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash   |            Test Case:
      Blocked By:                  |             Blocking:
 Related Tickets:                  |  Differential Rev(s):
       Wiki Page:                  |
-----------------------------------+--------------------------------------

Comment (by pallly):

 In the time of writing my first comment I was using Gentoo Linux, I have
 just managed to reproduce the problem using Arch Linux (synchronized
 today). Here is how I did it:

 * `cabal sandbox init`
 * `darcs get http://hub.darcs.net/pallly/hdur`
 * `darcs get http://hub.darcs.net/komadori/HsQML`
 * `cabal sandbox add-source HsQML/`
 * `cabal install hdur/ --enable-executable-profiling --enable-library-
 profiling`
 * `.cabal-sandbox/bin/hdur +RTS -hr`

 After spawning the last command the application mostly crashes within a
 second. If it doesn't, I press 'o' and then it always crashes within a
 second. Here's the message:
 {{{
 hdur: internal error: Invalid object in isRetainer(): 8
     (GHC version 7.10.3 for x86_64_unknown_linux)
     Please report this as a GHC bug:
 http://www.haskell.org/ghc/reportabug
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:18>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
-----------------------------------+--------------------------------------
        Reporter:  crockeea        |                Owner:
            Type:  bug             |               Status:  infoneeded
        Priority:  normal          |            Milestone:
       Component:  Runtime System  |              Version:  7.8.3
      Resolution:                  |             Keywords:
Operating System:  Linux           |         Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash   |            Test Case:
      Blocked By:                  |             Blocking:
 Related Tickets:                  |  Differential Rev(s):
       Wiki Page:                  |
-----------------------------------+--------------------------------------

Comment (by thomie):

 Thanks, I can reproduce it now.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:19>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
-----------------------------------+--------------------------------------
        Reporter:  crockeea        |                Owner:
            Type:  bug             |               Status:  infoneeded
        Priority:  normal          |            Milestone:
       Component:  Runtime System  |              Version:  7.8.3
      Resolution:                  |             Keywords:
Operating System:  Linux           |         Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash   |            Test Case:
      Blocked By:                  |             Blocking:
 Related Tickets:                  |  Differential Rev(s):
       Wiki Page:                  |
-----------------------------------+--------------------------------------
Changes (by maoe):

 * cc: maoe (added)


--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:20>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
-----------------------------------+--------------------------------------
        Reporter:  crockeea        |                Owner:
            Type:  bug             |               Status:  new
        Priority:  normal          |            Milestone:
       Component:  Runtime System  |              Version:  7.8.3
      Resolution:                  |             Keywords:
Operating System:  Linux           |         Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash   |            Test Case:
      Blocked By:                  |             Blocking:
 Related Tickets:                  |  Differential Rev(s):
       Wiki Page:                  |
-----------------------------------+--------------------------------------
Changes (by crockeea):

 * status:  infoneeded => new


--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:21>
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Re: [GHC] #8406: Invalid object in isRetainer() or Segfault

GHC - devs mailing list
In reply to this post by GHC - devs mailing list
#8406: Invalid object in isRetainer() or Segfault
-----------------------------------+--------------------------------------
        Reporter:  crockeea        |                Owner:  (none)
            Type:  bug             |               Status:  new
        Priority:  normal          |            Milestone:
       Component:  Runtime System  |              Version:  7.8.3
      Resolution:                  |             Keywords:
Operating System:  Linux           |         Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash   |            Test Case:
      Blocked By:                  |             Blocking:
 Related Tickets:                  |  Differential Rev(s):
       Wiki Page:                  |
-----------------------------------+--------------------------------------

Comment (by dredozubov):

 I can reproduce this problem on a project i have right now. I don't think
 i'll be able to contribute any extra test cases, it's quite big.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:22>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler

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