Re: [GHC] #874: SEGFAULT in stg_ap_ppp_info(): msg#00125 lang.haskell.glasgow.bugs

#874: SEGFAULT in stg_ap_ppp_info()
----------------------------+-----------------------------------------------
Reporter: guest | Owner: simonmar
Type: bug | Status: new
Priority: normal | Milestone: 6.4.3
Component: Runtime System | Version: 6.4.2
Severity: normal | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Architecture: x86
Os: Linux |
----------------------------+-----------------------------------------------
Changes (by simonmar):

* testcase: =>

Old description:

> Running a multi-threaded server application under stress testing,
> eventually get one of the following errors:
>
> app: internal error: stg_ap_ppp_ret
> Please report this as a bug to glasgow-haskell-bugs@xxxxxxxxxxx,
> or http://www.sourceforge.net/projects/ghc/
>
> or
>
> SEGFAULT in stg_ap_ppp_info()
>
> This was observed in GHC 6.4, and is still present after upgrading to
> 6.4.2.
> gdb stack trace below:
>
> ----------------------------------------
>
> [Thread debugging using libthread_db enabled]
> [New Thread 16384 (LWP 27919)]
> [New Thread 32769 (LWP 27922)]
> [New Thread 16386 (LWP 27923)]
> [New Thread 32771 (LWP 27924)]
> [New Thread 49156 (LWP 27925)]
> [New Thread 65541 (LWP 27929)]
> [New Thread 81926 (LWP 28021)]
> [New Thread 98311 (LWP 28864)]
> [New Thread 114696 (LWP 3114)]
>
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 32771 (LWP 27924)]
> 0x08338c8d in stg_ap_ppp_info ()
> (gdb) thread apply all where
>
> Thread 9 (Thread 114696 (LWP 3114)):
> #0 0x001450f4 in __pthread_sigsuspend () from /lib/i686/libpthread.so.0
> #1 0x00144728 in __pthread_wait_for_restart_signal () from
> /lib/i686/libpthread.so.0
> #2 0x00140fab in pthread_cond_wait@xxxxxxxxx () from
> /lib/i686/libpthread.so.0
> #3 0x08342246 in waitCondition ()
> #4 0x083b4180 in returning_worker_cond ()
> #5 0x083bf368 in in_haskell ()
> #6 0x00000000 in ?? ()
>
> Thread 8 (Thread 98311 (LWP 28864)):
> #0 0x001450f4 in __pthread_sigsuspend () from /lib/i686/libpthread.so.0
> #1 0x00144728 in __pthread_wait_for_restart_signal () from
> /lib/i686/libpthread.so.0
> #2 0x00140fab in pthread_cond_wait@xxxxxxxxx () from
> /lib/i686/libpthread.so.0
> #3 0x08342246 in waitCondition ()
> #4 0x083b4180 in returning_worker_cond ()
> #5 0x083bf368 in in_haskell ()
> #6 0x00000000 in ?? ()
>
> Thread 7 (Thread 81926 (LWP 28021)):
> #0 0x001450f4 in __pthread_sigsuspend () from /lib/i686/libpthread.so.0
> #1 0x00144728 in __pthread_wait_for_restart_signal () from
> /lib/i686/libpthread.so.0
> #2 0x00140fab in pthread_cond_wait@xxxxxxxxx () from
> /lib/i686/libpthread.so.0
> #3 0x08342246 in waitCondition ()
> #4 0x083b4180 in returning_worker_cond ()
> #5 0x083bf368 in in_haskell ()
> #6 0x00000000 in ?? ()
>
> Thread 6 (Thread 65541 (LWP 27929)):
> #0 0x004e1c21 in select () from /lib/i686/libc.so.6
> #1 0x083bf888 in MainCapability ()
> #2 0x0089c91c in ?? ()
> #3 0x006f5778 in ?? ()
> #4 0x00000000 in ?? ()
>
> Thread 5 (Thread 49156 (LWP 27925)):
> #0 0x001450f4 in __pthread_sigsuspend () from /lib/i686/libpthread.so.0
> #1 0x00144728 in __pthread_wait_for_restart_signal () from
> /lib/i686/libpthread.so.0
> #2 0x00140fab in pthread_cond_wait@xxxxxxxxx () from
> /lib/i686/libpthread.so.0
> #3 0x08342246 in waitCondition ()
> #4 0x083b4180 in returning_worker_cond ()
> #5 0x083bf368 in in_haskell ()
> #6 0x044d6bc0 in ?? ()
> #7 0x0014aff4 in ?? () from /lib/i686/libpthread.so.0
> #8 0x00000001 in ?? ()
> #9 0x083bf368 in in_haskell ()
> #10 0x030d8e48 in ?? ()
> #11 0x0833a93e in waitForCapability ()
> #12 0x00000000 in ?? ()
>
> Thread 4 (Thread 32771 (LWP 27924)):
> #0 0x08338c8d in stg_ap_ppp_info ()
> #1 0x00692c38 in ?? ()
> #2 0x00148464 in write () from /lib/i686/libpthread.so.0
> ---Type <return> to continue, or q <return> to quit---
> #3 0x00000001 in ?? ()
> #4 0x006f5800 in ?? ()
> #5 0x00000001 in ?? ()
> #6 0x00000002 in ?? ()
> #7 0x006f57b8 in ?? ()
> #8 0x0014d41c in wait_node_free_list () from /lib/i686/libpthread.so.0
> #9 0x083c91e0 in ?? ()
> #10 0x00000001 in ?? ()
> #11 0x026d4a80 in ?? ()
> #12 0x00000000 in ?? ()
>
> Thread 3 (Thread 16386 (LWP 27923)):
> #0 0x001450f4 in __pthread_sigsuspend () from /lib/i686/libpthread.so.0
> #1 0x00144728 in __pthread_wait_for_restart_signal () from
> /lib/i686/libpthread.so.0
> #2 0x00140fab in pthread_cond_wait@xxxxxxxxx () from
> /lib/i686/libpthread.so.0
> #3 0x08342246 in waitCondition ()
> #4 0x083b4180 in returning_worker_cond ()
> #5 0x083bf368 in in_haskell ()
> #6 0x00000000 in ?? ()
>
> Thread 2 (Thread 32769 (LWP 27922)):
> #0 0x004df82a in poll () from /lib/i686/libc.so.6
> #1 0x001424c0 in __pthread_manager () from /lib/i686/libpthread.so.0
> #2 0x00142e95 in __pthread_manager_event () from
> /lib/i686/libpthread.so.0
> #3 0x004e8ffa in clone () from /lib/i686/libc.so.6
>
> Thread 1 (Thread 16384 (LWP 27919)):
> #0 0x001450f4 in __pthread_sigsuspend () from /lib/i686/libpthread.so.0
> #1 0x00144728 in __pthread_wait_for_restart_signal () from
> /lib/i686/libpthread.so.0
> #2 0x00140fab in pthread_cond_wait@xxxxxxxxx () from
> /lib/i686/libpthread.so.0
> #3 0x08342246 in waitCondition ()
> #4 0x083c53a4 in ?? ()
> #5 0x083bf368 in in_haskell ()
> #6 0x00000000 in ?? ()

New description:

Running a multi-threaded server application under stress testing,
eventually get one of the following errors:

{{{
app: internal error: stg_ap_ppp_ret
Please report this as a bug to glasgow-haskell-bugs@xxxxxxxxxxx,
or http://www.sourceforge.net/projects/ghc/
}}}

or

SEGFAULT in stg_ap_ppp_info()

This was observed in GHC 6.4, and is still present after upgrading to
6.4.2.
gdb stack trace below:

{{{
[Thread debugging using libthread_db enabled]
[New Thread 16384 (LWP 27919)]
[New Thread 32769 (LWP 27922)]
[New Thread 16386 (LWP 27923)]
[New Thread 32771 (LWP 27924)]
[New Thread 49156 (LWP 27925)]
[New Thread 65541 (LWP 27929)]
[New Thread 81926 (LWP 28021)]
[New Thread 98311 (LWP 28864)]
[New Thread 114696 (LWP 3114)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 32771 (LWP 27924)]
0x08338c8d in stg_ap_ppp_info ()
(gdb) thread apply all where

Thread 9 (Thread 114696 (LWP 3114)):
#0 0x001450f4 in __pthread_sigsuspend () from /lib/i686/libpthread.so.0
#1 0x00144728 in __pthread_wait_for_restart_signal () from
/lib/i686/libpthread.so.0
#2 0x00140fab in pthread_cond_wait@xxxxxxxxx () from
/lib/i686/libpthread.so.0
#3 0x08342246 in waitCondition ()
#4 0x083b4180 in returning_worker_cond ()
#5 0x083bf368 in in_haskell ()
#6 0x00000000 in ?? ()

Thread 8 (Thread 98311 (LWP 28864)):
#0 0x001450f4 in __pthread_sigsuspend () from /lib/i686/libpthread.so.0
#1 0x00144728 in __pthread_wait_for_restart_signal () from
/lib/i686/libpthread.so.0
#2 0x00140fab in pthread_cond_wait@xxxxxxxxx () from
/lib/i686/libpthread.so.0
#3 0x08342246 in waitCondition ()
#4 0x083b4180 in returning_worker_cond ()
#5 0x083bf368 in in_haskell ()
#6 0x00000000 in ?? ()

Thread 7 (Thread 81926 (LWP 28021)):
#0 0x001450f4 in __pthread_sigsuspend () from /lib/i686/libpthread.so.0
#1 0x00144728 in __pthread_wait_for_restart_signal () from
/lib/i686/libpthread.so.0
#2 0x00140fab in pthread_cond_wait@xxxxxxxxx () from
/lib/i686/libpthread.so.0
#3 0x08342246 in waitCondition ()
#4 0x083b4180 in returning_worker_cond ()
#5 0x083bf368 in in_haskell ()
#6 0x00000000 in ?? ()

Thread 6 (Thread 65541 (LWP 27929)):
#0 0x004e1c21 in select () from /lib/i686/libc.so.6
#1 0x083bf888 in MainCapability ()
#2 0x0089c91c in ?? ()
#3 0x006f5778 in ?? ()
#4 0x00000000 in ?? ()

Thread 5 (Thread 49156 (LWP 27925)):
#0 0x001450f4 in __pthread_sigsuspend () from /lib/i686/libpthread.so.0
#1 0x00144728 in __pthread_wait_for_restart_signal () from
/lib/i686/libpthread.so.0
#2 0x00140fab in pthread_cond_wait@xxxxxxxxx () from
/lib/i686/libpthread.so.0
#3 0x08342246 in waitCondition ()
#4 0x083b4180 in returning_worker_cond ()
#5 0x083bf368 in in_haskell ()
#6 0x044d6bc0 in ?? ()
#7 0x0014aff4 in ?? () from /lib/i686/libpthread.so.0
#8 0x00000001 in ?? ()
#9 0x083bf368 in in_haskell ()
#10 0x030d8e48 in ?? ()
#11 0x0833a93e in waitForCapability ()
#12 0x00000000 in ?? ()

Thread 4 (Thread 32771 (LWP 27924)):
#0 0x08338c8d in stg_ap_ppp_info ()
#1 0x00692c38 in ?? ()
#2 0x00148464 in write () from /lib/i686/libpthread.so.0
---Type <return> to continue, or q <return> to quit---
#3 0x00000001 in ?? ()
#4 0x006f5800 in ?? ()
#5 0x00000001 in ?? ()
#6 0x00000002 in ?? ()
#7 0x006f57b8 in ?? ()
#8 0x0014d41c in wait_node_free_list () from /lib/i686/libpthread.so.0
#9 0x083c91e0 in ?? ()
#10 0x00000001 in ?? ()
#11 0x026d4a80 in ?? ()
#12 0x00000000 in ?? ()

Thread 3 (Thread 16386 (LWP 27923)):
#0 0x001450f4 in __pthread_sigsuspend () from /lib/i686/libpthread.so.0
#1 0x00144728 in __pthread_wait_for_restart_signal () from
/lib/i686/libpthread.so.0
#2 0x00140fab in pthread_cond_wait@xxxxxxxxx () from
/lib/i686/libpthread.so.0
#3 0x08342246 in waitCondition ()
#4 0x083b4180 in returning_worker_cond ()
#5 0x083bf368 in in_haskell ()
#6 0x00000000 in ?? ()

Thread 2 (Thread 32769 (LWP 27922)):
#0 0x004df82a in poll () from /lib/i686/libc.so.6
#1 0x001424c0 in __pthread_manager () from /lib/i686/libpthread.so.0
#2 0x00142e95 in __pthread_manager_event () from
/lib/i686/libpthread.so.0
#3 0x004e8ffa in clone () from /lib/i686/libc.so.6

Thread 1 (Thread 16384 (LWP 27919)):
#0 0x001450f4 in __pthread_sigsuspend () from /lib/i686/libpthread.so.0
#1 0x00144728 in __pthread_wait_for_restart_signal () from
/lib/i686/libpthread.so.0
#2 0x00140fab in pthread_cond_wait@xxxxxxxxx () from
/lib/i686/libpthread.so.0
#3 0x08342246 in waitCondition ()
#4 0x083c53a4 in ?? ()
#5 0x083bf368 in in_haskell ()
#6 0x00000000 in ?? ()
}}}

--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/874>
GHC <http://www.haskell.org/ghc/>
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