issue with libthr?

Waitman Gobble uzimac at
Sun Jun 2 04:03:07 UTC 2013

On Sat, 1 Jun 2013 11:14:46 -0700 (PDT), Waitman Gobble
<uzimac at> wrote: 
>On Sat, 1 Jun 2013 20:44:00 +0300, Konstantin Belousov
<kostikbel at>
>>You cannot even guess what is going on without a proper debug information.
>>Recompile and reinstall the libc/libthr/rtld with the debugging symbols
>>to get proper backtraces.
>>Anyway, two backtraces you demostrated, although not giving much useful
>>data, look very different.  More, the second backtrace suggests that
>>there is either a bug in python interposing of malloc or memory
>Thanks so much for your help, I'll rebuild with debug on next. 


Perhaps a better backtrace, from python2.7.core created when trying to install

#0  thr_kill () at thr_kill.S:3
#1  0x0000000801184ecc in abort () at /usr/src/lib/libc/stdlib/abort.c:65
#2  0x000000080464aca1 in free (mem=0x8065015b0)
#3  0x0000000800e4c1af in _pthread_mutex_destroy (mutex=<value optimized
    at /usr/src/lib/libthr/thread/thr_mutex.c:273
#4  0x00000008010e0def in closedir (dirp=0x803b2dda0)
    at /usr/src/lib/libc/gen/closedir.c:65
#5  0x000000000053d482 in posix_listdir (self=0x0, args=0x806425ae0)
    at ./../Modules/posixmodule.c:2543
#6  0x000000000057fa6e in PyCFunction_Call (func=0x801920080, arg=0x806425ae0,

    kw=0x0) at ./../Objects/methodobject.c:81
#7  0x00000000004e40dd in call_function (pp_stack=0x7fffffff9388, oparg=1)
    at ./../Python/ceval.c:4021
#8  0x00000000004dffcd in PyEval_EvalFrameEx (f=0x801a8f9a0, throwflag=0)
    at ./../Python/ceval.c:2666

snipped, complete backtrace at

all ports have been rebuilt, lib_pkgchk returns no missing libraries.
running FreeBSD 10.0-CURRENT #0 r251216: Sat Jun  1 03:21:48 PDT 2013

It seems that any program using Python crashes. also, Seamonkey. I do not so
far notice
 any other issues with this system. It was working great until an update about
a week ago.

(gdb) bt
#0  thr_kill () at thr_kill.S:3
#1  0x000000080316b585 in XRE_InstallX11ErrorHandler ()
   from /usr/local/lib/seamonkey/
#2  0x0000000800f75286 in handle_signal (actp=<value optimized out>, sig=11,

    info=0x7fffffffb7f0, ucp=0x7fffffffb480)
    at /usr/src/lib/libthr/thread/thr_sig.c:237
#3  0x0000000800f74e89 in thr_sighandler (sig=11, info=<value optimized out>,

    _ucp=<value optimized out>) at /usr/src/lib/libthr/thread/thr_sig.c:182
#4  0x00007ffffffff1d3 in ?? ()
#5  0x0000000800f74d70 in sigaction ()
    at /usr/src/lib/libthr/thread/thr_sig.c:574
Previous frame inner to this frame (corrupt stack?)
Current language:  auto; currently asm

Thank you.

Waitman Gobble
San Jose California USA

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