From owner-freebsd-bugs@FreeBSD.ORG Tue Oct 2 07:00:19 2012 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id D8AA9106566B for ; Tue, 2 Oct 2012 07:00:19 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id B23918FC15 for ; Tue, 2 Oct 2012 07:00:19 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.5/8.14.5) with ESMTP id q9270Jdh022671 for ; Tue, 2 Oct 2012 07:00:19 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.5/8.14.5/Submit) id q9270JeN022664; Tue, 2 Oct 2012 07:00:19 GMT (envelope-from gnats) Date: Tue, 2 Oct 2012 07:00:19 GMT Message-Id: <201210020700.q9270JeN022664@freefall.freebsd.org> To: freebsd-bugs@FreeBSD.org From: Alexander Motin Cc: Subject: Re: kern/172166: Deadlock in the networking code, possible due to a bug in the SCHED_ULE X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Alexander Motin List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Oct 2012 07:00:20 -0000 The following reply was made to PR kern/172166; it has been noted by GNATS. From: Alexander Motin To: bug-followup@FreeBSD.org, eugen@eg.sd.rdtc.ru Cc: Andriy Gapon Subject: Re: kern/172166: Deadlock in the networking code, possible due to a bug in the SCHED_ULE Date: Tue, 02 Oct 2012 09:58:00 +0300 About rw_lock priority propagation locking(9) tells: The rw_lock locks have priority propagation like mutexes, but priority can be propagated only to an exclusive holder. This limitation comes from the fact that shared owners are anonymous. What's about idle stealing threshold, it was fixed in HEAD at r239194, but wasn't merged yet. It should be trivial to merge it. -- Alexander Motin