[Bug c++/14629] New: hpux internal-error when following fork or vfork

[Bug c++/14629] New: hpux internal-error when following fork or vfork

[chilabot at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14629

             Bug #: 14629
           Summary: hpux internal-error when following fork or vfork
           Product: gdb
           Version: 7.5
            Status: NEW
          Severity: critical
          Priority: P2
         Component: c++
        AssignedTo: unassigned@sourceware.org
        ReportedBy: chilabot@gmail.com
    Classification: Unclassified


Created attachment 6652
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6652
GDB log file

#include <unistd.h>

int main(int argc, char** argv) 
{
    fork();
    return 0;
}



~"target.c:3242: internal-error: Can't determine the current address space of
thread process 19512\n\nA problem internal to GDB has been detected,\nfurther
debugging may prove unreliable.\nQuit this debugging session? "
~"(y or n) [answered Y; input not from terminal]\n"
~"target.c:3242: internal-error: Can't determine the current address space of
thread process 19512\n\nA problem internal to GDB has been detected,\nfurther
debugging may prove unreliable.\nCreate a core file of GDB? "
~"(y or n) [answered Y; input not from terminal]\n"


$ /usr/contrib/bin/machinfo

CPU info:
   Intel(R) Itanium 2 9100 series processor (1.6 GHz, 24 MB)
   2 cores, 4 logical processors per socket
   533 MT/s bus, CPU version A1
          Active processor count:
          4 sockets
          6 cores (1 to 2 per socket)
          12 logical processors
          LCPU attribute is enabled

Memory: 20366 MB (19.89 GB)

Firmware info:
   Firmware revision:  9.048
   FP SWA driver revision: 1.18
   IPMI is supported on this system.
   BMC firmware revision: 4.01

Platform info:
   Model:                  "ia64 hp server rx8640"
   Machine ID number:      8e73b9a5-cc23-11de-badc-8b8193cbace1
   Machine serial number:  USE49395AD

OS info:
   Nodename:  rx8kl
   Release:   HP-UX B.11.31
   Version:   U (unlimited-user license)
   Machine:   ia64
   ID Number: 2389948837
   vmunix _release_version:
@(#) $Revision: vmunix:    B.11.31_LR FLAVOR=perf

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug c++/14629] hpux internal-error when following fork or vfork

[palves at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14629

Pedro Alves <palves at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |palves at redhat dot com
         Resolution|                            |FIXED
   Target Milestone|---                         |7.6

--- Comment #1 from Pedro Alves <palves at redhat dot com> 2012-09-26 17:05:52 UTC ---
Thanks.

This has been fixed on mainline already:

commit 99eb1c237fa33bcfc0862513eaf7e2f1216a0c14
Author: Joel Brobecker <brobecker@gnat.com>
Date:   Thu Aug 16 23:55:01 2012 +0000

    fix internal_error during fork event handling.

and a couple commits more before that one.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug c++/14629] hpux internal-error when following fork or vfork

[chilabot at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14629

--- Comment #2 from Roberto Giménez <chilabot at gmail dot com> 2012-09-26 18:53:43 UTC ---
Oh, ok thanks.

(In reply to comment #1)
> Thanks.
> 
> This has been fixed on mainline already:
> 
> commit 99eb1c237fa33bcfc0862513eaf7e2f1216a0c14
> Author: Joel Brobecker <brobecker@gnat.com>
> Date:   Thu Aug 16 23:55:01 2012 +0000
> 
>     fix internal_error during fork event handling.
> 
> and a couple commits more before that one.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug c++/14629] hpux internal-error when following fork or vfork

[chilabot at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14629

--- Comment #3 from Roberto Giménez <chilabot at gmail dot com> 2012-09-26 20:33:49 UTC ---
Now running an application that does many forks, after some of them gdb throws:

19-stack-list-arguments 1
(gdb) 
19^done,stack-args=[frame={level="0",args=[{name="argc",value="5"},{name="argv",value="0x9fffffffffffef88"}]}]
(gdb) 
20-exec-continue
20^running
*running,thread-id="1"
(gdb) 
&"Detaching after fork from child process 14555.\n"
&"Detaching after fork from child process 14556.\n"
=thread-created,id="2",group-id="i1"
~"[New process 14533, lwp 6996756]\n"
=thread-created,id="3",group-id="i1"
~"[New process 14533, lwp 6996757]\n"
=thread-created,id="4",group-id="i1"
~"[New process 14533, lwp 6996758]\n"
=thread-created,id="5",group-id="i1"
~"[New process 14533, lwp 6996759]\n"
=thread-created,id="6",group-id="i1"
~"[New process 14533, lwp 6996760]\n"
=thread-created,id="7",group-id="i1"
~"[New process 14533, lwp 6996761]\n"
=thread-created,id="8",group-id="i1"
~"[New process 14533, lwp 6996762]\n"
=thread-created,id="9",group-id="i1"
~"[New process 14533, lwp 6996763]\n"
&"Detaching after fork from child process 14558.\n"
*running,thread-id="all"
&"Detaching after fork from child process 14565.\n"
~"[Switching to process 14533, lwp 6996758]\n"
&"warning: Failed to read register value for psr.\n"
&"warning: Failed to read register value for ip.\n"
&"warning: Failed to read register value for bsp.\n"
&"warning: Failed to read register value for bspstore.\n"
*stopped,frame={addr="0x9fffffff7ee48730",func="_fork_sys",args=[],from="/lib/hpux64/libc.so.1"},thread-id="4",stopped-threads="all"
21-stack-list-frames
20^error,msg="ttrace: Protocol error."
=thread-selected,id="4"
(gdb) 
&"warning: Failed to read register value for r12.\n"
&"warning: Failed to read register value for bsp.\n"
&"warning: Failed to read register value for cfm.\n"
&"warning: Failed to read register value for bspstore.\n"
&"warning: Failed to read register value for b0.\n"
&"warning: Failed to read register value for pfs.\n"
21^done,stack=[frame={level="0",addr="0x9fffffff7ee48730",func="_fork_sys",from="/lib/hpux64/libc.so.1"},frame={level="1",addr="0x60000000012534b0",func="??"},frame={level="2",addr="0x0000000000000000",func="??"}]
22-stack-list-arguments 1
(gdb) 
22^done,stack-args=[frame={level="0",args=[]},frame={level="1",args=[]},frame={level="2",args=[]}]
(gdb)

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug c++/14629] hpux internal-error when following fork or vfork

[palves at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14629

Pedro Alves <palves at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
                 CC|                            |brobecker at adacore dot
                   |                            |com
         Resolution|FIXED                       |

--- Comment #4 from Pedro Alves <palves at redhat dot com> 2012-09-27 17:21:56 UTC ---
Can you clarify what "now" means?  Do you mean with current mainline?

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug c++/14629] hpux internal-error when following fork or vfork

[palves at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14629

--- Comment #5 from Pedro Alves <palves at redhat dot com> 2012-09-27 17:23:08 UTC ---
To be clear, I think you were referring to the 

 20^error,msg="ttrace: Protocol error."

error, right?

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug c++/14629] hpux internal-error when following fork or vfork

[chilabot at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14629

--- Comment #6 from Roberto Giménez <chilabot at gmail dot com> 2012-09-27 19:47:44 UTC ---
(In reply to comment #4)

> Can you clarify what "now" means?  Do you mean with current mainline?

Yes.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug c++/14629] hpux internal-error when following fork or vfork

[chilabot at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14629

--- Comment #7 from Roberto Giménez <chilabot at gmail dot com> 2012-09-27 19:48:11 UTC ---
(In reply to comment #5)
> To be clear, I think you were referring to the 
> 
>  20^error,msg="ttrace: Protocol error."
> 
> error, right?

Yes.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug c++/14629] hpux internal-error when following fork or vfork

[palves at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14629

Pedro Alves <palves at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #8 from Pedro Alves <palves at redhat dot com> 2012-10-01 18:42:41 UTC ---
I've opened PR14653 to track the ttrace error issue.

Closing this as the original bug is fixed.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.