libkse and bus error

[Morten Rodal]

I seem to be able to crash almost every pthread program that uses
pthread_mutex'es.  First I thought it was a problem with
pthread_testcancel(), until I compiled libkse with DEBUG_FLAGS=-g on
one of machines.

Backtrace from a machine with DEBUG_FLAGS=-g and libkse:

#0  0x28e6ed1b in kse_thr_interrupt () at {standard input}:15
#1  0x28e5f990 in _thr_sig_add (pthread=0x81fab00, sig=136293172,
info=0x0)
    at /usr/src/lib/libpthread/thread/thr_sig.c:885
#2  0x28e687cb in kse_check_completed (kse=0x81fab00)
    at /usr/src/lib/libpthread/thread/thr_kern.c:1558
#3  0x28e6721c in kse_sched_multi (kmbx=0x17e)
    at /usr/src/lib/libpthread/thread/thr_kern.c:1021
#4  0x08207000 in ?? ()
#5  0x080bc6c6 in DCTransferView::DC_DownloadManagerCallBack(CObject*) ()


On a machine without DEBUG_FLAGS=-g this backtrace:

(gdb) bt
#0  0x288e96bb in pthread_testcancel () from /usr/lib/libkse.so.1
#1  0x288e371b in pthread_mutexattr_init () from /usr/lib/libkse.so.1
#2  0x288e219c in pthread_mutexattr_init () from /usr/lib/libkse.so.1
#3  0x082d6000 in ?? ()
#4  0x291e2807 in nsWindow::OnContainerFocusInEvent(_GtkWidget*, _GdkEventFocus*) () from /usr/X11R6/lib/firebird/lib/mozilla-1.5/components/libwidget_gtk2.so


One machine is running a kernel from

FreeBSD slurp.rodal.no 5.1-CURRENT FreeBSD 5.1-CURRENT #3: Tue Oct 14 20:47:45 CEST 2003     root at slurp.rodal.no:/usr/obj/usr/src/sys/slurp i386

the other from

FreeBSD hauk10.idi.ntnu.no 5.1-CURRENT FreeBSD 5.1-CURRENT #2: Fri Sep 26 09:12:55 CEST 2003 root at hauk10.idi.ntnu.no:/usr/obj/usr/src/sys/hauk10  i386


For those of you who wonder, yes it is two different applications but
the first one crashed with the exact same back trace as the second one
before I installed a libkse with debugging information on
slurp.rodal.no.

-- 
Morten Rodal