From owner-freebsd-stable@FreeBSD.ORG Tue Jan 31 17:05:25 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 86BBE16A420 for ; Tue, 31 Jan 2006 17:05:25 +0000 (GMT) (envelope-from rwatson@FreeBSD.org) Received: from cyrus.watson.org (cyrus.watson.org [209.31.154.42]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0220E43D53 for ; Tue, 31 Jan 2006 17:05:24 +0000 (GMT) (envelope-from rwatson@FreeBSD.org) Received: from fledge.watson.org (fledge.watson.org [209.31.154.41]) by cyrus.watson.org (Postfix) with ESMTP id E2C5C46B87; Tue, 31 Jan 2006 12:05:15 -0500 (EST) Date: Tue, 31 Jan 2006 17:07:15 +0000 (GMT) From: Robert Watson X-X-Sender: robert@fledge.watson.org To: Anish Mistry In-Reply-To: <200601301843.12108.mistry.7@osu.edu> Message-ID: <20060131170612.N95776@fledge.watson.org> References: <200601301843.12108.mistry.7@osu.edu> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-stable@freebsd.org Subject: Re: Fatal trap 12: page fault soo_poll X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 31 Jan 2006 17:05:25 -0000 On Mon, 30 Jan 2006, Anish Mistry wrote: > I just got the following trap on my AMD64 system while doing some > video encoding. I'm updating to the latest STABLE to see if I can > reproduce it. > FreeBSD 6.0-STABLE #8: Thu Jan 26 19:07:13 UTC 2006 > > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0xffffffcc805543e0 > fault code = supervisor read, page not present > instruction pointer = 0x8:0xffffffff8025b244 > stack pointer = 0x10:0xffffffff962e4900 > frame pointer = 0x10:0xffffffff962e4930 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, long 1, def32 0, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 3 > current process = 705 (Xorg) > [thread pid 705 tid 100104 ] > Stopped at soo_poll+0x44: movq 0x60(%rax),%rax > db> bt > Tracing pid 705 tid 100104 td 0xffffff0013a02260 > soo_poll() at soo_poll+0x44 > kern_select() at kern_select+0x8b7 > select() at select+0x3e > syscall() at syscall+0x471 > Xfast_syscall() at Xfast_syscall+0xa8 If you can reproduce this, stack traces extracted from a core with gdb would be very helpful. I've fixed several bugs that "look a lot like that", but think most or all of those fixes were from before 6.0, so I think those should already be in the code you're running. However, I may misremember, and there has been quite a bit of cleanup done to UNIX domain sockets and TCP since 6.0-RELEASE. Thanks, Robert N M Watson