Date: Sun, 5 Jul 2009 16:48:27 +0200 From: Attilio Rao <attilio@freebsd.org> To: Rink Springer <rink@freebsd.org> Cc: FreeBSD-gnats-submit@freebsd.org, freebsd-threads@freebsd.org Subject: Re: threads/136345: Recursive read rwlocks in thread A cause deadlock with write lock in thread B Message-ID: <3bbf2fe10907050748x64bb2c7dmc0787fe6bda5d701@mail.gmail.com> In-Reply-To: <20090705140332.GA8739@rink.nu> References: <20090705134016.CB1286D41E@mx1.rink.nu> <200907051400.n65E0AWQ074917@freefall.freebsd.org> <20090705140332.GA8739@rink.nu>
next in thread | previous in thread | raw e-mail | index | archive | help
2009/7/5 Rink Springer <rink@freebsd.org>: > Did some more testing; it works fine on Solaris 9 and 10. Also, the > deadlock doesn't appear on FreeBSD 6.1-STABLE (Sep 2006). Perhaps this > is a libthr issue? I think that rdlock_count in libthr is not updated properly. Can you test the following patch: http://www.freebsd.org/~attilio/libthr.diff Thanks, Attilio -- Peace can only be achieved by understanding - A. Einstein
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3bbf2fe10907050748x64bb2c7dmc0787fe6bda5d701>