Date: Sun, 23 Nov 2003 17:11:23 +0100 From: Morten Rodal <morten@rodal.no> To: Daniel Eischen <eischen@vigrid.com> Cc: threads@freebsd.org Subject: Re: libkse and bus error Message-ID: <3FC0DC2B.7020602@rodal.no> In-Reply-To: <Pine.GSO.4.10.10310191747540.26554-100000@pcnet5.pcnet.com> References: <Pine.GSO.4.10.10310191747540.26554-100000@pcnet5.pcnet.com>
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Daniel Eischen wrote:
> On Sun, 19 Oct 2003, Morten Rodal wrote:
>>On Sun, Oct 19, 2003 at 02:16:27PM -0400, Daniel Eischen wrote:
>>>On Sun, 19 Oct 2003, Morten Rodal wrote:
>>>>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
>>>
>>>This is a problem. The mailbox pointer is invalid.
>>>
>>
>>I thought it looked a bit strange. Any clues to what might have
>>caused this?
>
>
> When I've seen it before, it's when %gs becomes corrupted. Nvidia
> uses static ldt allocation and this can screw things up. If you
> are getting any static ldt allocations out of the kernel, that is
> the problem.
>
I hate to rip up in old mails, but I am now able to crash Mozilla
Firebird at command. It dies with the same strange traceback as I got
with dc++ (which this thread originally addressed).
When ordering a airplane ticket from www.scandinavian.net Mozilla
Firebird will crash when confirming the payment with a signal 10. This
happens on three completly different computers;
* Dual Pentium II 300MHz, libkse, kernel from Nov 19
* Pentium III 933MHz, libkse, kernel from Nov 3
* Pentium 4 1.7GHz, libkse, kernel from Nov 21
Only the Dual Pentium is running nvidia drivers. The others are running
X11 drivers.
All of them produce a MozillaFirebird-bin.core which has this backtrace
(cut down to an absolute minimum since it is rather huge):
#0 0x288c2ebb in pthread_testcancel () from /usr/lib/libkse.so.1
#1 0x288bc91b in pthread_mutexattr_init () from /usr/lib/libkse.so.1
#2 0x288bb36c in pthread_mutexattr_init () from /usr/lib/libkse.so.1
#3 0x09b8d000 in ?? ()
#4 0x283c5cac in gtk_widget_hide () from
/usr/X11R6/lib/libgtk-x11-2.0.so.200
I will recompile libkse with DEBUG_FLAGS=-g and see if I cant get any
more accurate info than this.
--
Morten Rodal
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