SMP hard lock with libpthread (thread X holds Y but isn't blocked on a lock)

[othermark]

Kris Kennaway wrote:

> On Mon, May 16, 2005 at 08:33:14AM -0700, othermark wrote:
>> I have an application that uses shared memory/threads and is linked with
>> libpthread, running on May 10 -current.  Every time I run it, after a few
>> minutes *poof* hard lock on a SMP box.  All debug options are enabled in
>> the kernel, but it won't break to debugger.  Here's what appears on the
>> console, and addr2line output follows:
> 
> Try the NMI debugger patches, which might be sufficient to get it into
> DDB.
> 
> Kris

Jonathan's report on this issue, does have the stack trace, but seems to
be triggered by nfs.

http://article.gmane.org/gmane.os.freebsd.current/69268

However, simply recompiling my application with libthr instead of libpthread
completely avoids the panic.

-- 
othermark
atkin901 at nospam dot yahoo dot com
(!wired)?(coffee++):(wired);