bind fails with sig11 on start / pthread failure on ARM?

Bernd Walter ticso at cicely7.cicely.de
Fri Feb 19 03:30:05 UTC 2010


On Fri, Feb 19, 2010 at 04:12:00AM +0100, Bernd Walter wrote:
> On Thu, Feb 18, 2010 at 03:10:10PM +0200, Kostik Belousov wrote:
> > On Thu, Feb 18, 2010 at 01:49:07PM +0100, Bernd Walter wrote:
> > > On Tue, Feb 16, 2010 at 07:39:51PM +0100, Bernd Walter wrote:
> > > > On Mon, Feb 15, 2010 at 10:39:07PM +0100, Bernd Walter wrote:
> [Switching to thread 4 (Thread 20804140 (LWP 100053))]#0  0x0015755c in isc_atomic_cmpxchg ()
> (gdb) bt
> #0  0x0015755c in isc_atomic_cmpxchg ()
> #1  0x00157dac in isc_rwlock_lock ()
> #2  0x000f9790 in dns_db_register ()
> #3  0x0004d590 in dns_sdb_register ()
> #4  0x0000c974 in ns_builtin_init ()
> #5  0x0001aa90 in $a ()
> #6  0x0001aa90 in $a ()
> 
> isc_atomic_cmpxchg really sounds quite interesting though.
> It is not only the crashing function it is also a type of function which
> sounds error prune.

For me it looks like a bug in bind itself.
It is in contrib/bind9/lib/isc/arm/include/isc/atomic.h.
My assumption is that either the assembly is broken or it gets an
invalid pointer.
I'm not very expirienced with ARM assembly.
Warner - it names you in the copyright, so very likely you know this code.
I will build a debug version of bind, but as usual it will take some
time...

-- 
B.Walter <bernd at bwct.de> http://www.bwct.de
Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.


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