From owner-freebsd-net@FreeBSD.ORG Tue Aug 16 20:50:07 2011 Return-Path: Delivered-To: freebsd-net@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D74B1106566B for ; Tue, 16 Aug 2011 20:50:07 +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 A8DDD8FC13 for ; Tue, 16 Aug 2011 20:50:07 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.4/8.14.4) with ESMTP id p7GKo7Mm018363 for ; Tue, 16 Aug 2011 20:50:07 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id p7GKo7mS018362; Tue, 16 Aug 2011 20:50:07 GMT (envelope-from gnats) Date: Tue, 16 Aug 2011 20:50:07 GMT Message-Id: <201108162050.p7GKo7mS018362@freefall.freebsd.org> To: freebsd-net@FreeBSD.org From: Arnaud Lacombe Cc: Subject: Re: kern/155597: [panic] Kernel panics with " sbdrop" message X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Arnaud Lacombe List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Aug 2011 20:50:07 -0000 The following reply was made to PR kern/155597; it has been noted by GNATS. From: Arnaud Lacombe To: bug-followup@FreeBSD.org, vova@ashmanov.com Cc: Subject: Re: kern/155597: [panic] Kernel panics with "sbdrop" message Date: Tue, 16 Aug 2011 16:43:59 -0400 Hi, Does this still happen with 9.0-BETA ? If so, could this be a use-after-free, where an mbuf is freed (during an m_pullup() or alike), but the old reference is still kept around, gets added to the sockbuf, then the mbuf is re-allocated and corrupt the sockbuf ?