Date: Mon, 22 Nov 2004 00:55:47 -0500 (EST) From: Daniel Eischen <deischen@freebsd.org> To: Steve Kargl <sgk@troutmask.apl.washington.edu> Cc: freebsd-threads@freebsd.org Subject: Re: firefox stuck in kserel Message-ID: <Pine.GSO.4.43.0411220051360.29589-100000@sea.ntplx.net> In-Reply-To: <20041122003244.GA80638@troutmask.apl.washington.edu>
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On Sun, 21 Nov 2004, Steve Kargl wrote: > On Sun, Nov 21, 2004 at 06:37:00PM -0500, Daniel Eischen wrote: > > > > > > > > > > > > You can try the patch at: > > > > > > > > > > > > http://people.freebsd.org/~deischen/kse/libpthread.diffs > > > > > > > > > > > > kargl[281] firefox > > > Fatal error 'Recurse on a private mutex.' at line 988 in file /usr/src/lib/libpthread/thread/thr_mutex.c (errno = 0) > > > Abort trap (core dumped) > > > > What page? I was running at firefox at work with this patch. > > The recurse shouldn't happen. Are you still using plugins? > > > > One more tidbit. I re-installed your patch and deleted > linuxpluginwrapper and linux-flashplugin6. The above > patch works fine. Of course, any web page that use flash 6 > becomes somewhat useless. I don't think it's anything libpthread is doing. > I also rebuilt libpthread with debugging option -g. The > trace shows > > (gdb) bt > #0 0x48a77a2b in kse_thr_interrupt () at kse_thr_interrupt.S:2 > #1 0x48a65d1e in sig_daemon (arg=0x0) > at /usr/src/lib/libpthread/thread/thr_sig.c:214 > #2 0x48a6fae7 in kse_sched_single (kmbx=0x17f) > at /usr/src/lib/libpthread/thread/thr_kern.c:880 Something is hosed because the mailbox in kse_sched_single() is garbage. > #3 0x00000000 in ?? () > Current language: auto; currently asm > (gdb) quit > > This doesn't make any sense to me, so maybe gdb is having > trouble tracing the core dump. I don't know. The backtrace looks OK 'cause kse_sched_single() is the upcall entry point, but the KSE mailbox (kmbx) is not correct -- it should be a pointer and looks more like what %gs would be. -- DE
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