From owner-freebsd-sparc64@FreeBSD.ORG Sun Feb 12 06:30:07 2006 Return-Path: X-Original-To: freebsd-sparc64@hub.freebsd.org Delivered-To: freebsd-sparc64@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E9A8B16A420 for ; Sun, 12 Feb 2006 06:30:07 +0000 (GMT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6E71E43D45 for ; Sun, 12 Feb 2006 06:30:07 +0000 (GMT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.13.4/8.13.4) with ESMTP id k1C6U6HB049389 for ; Sun, 12 Feb 2006 06:30:06 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.13.4/8.13.4/Submit) id k1C6U6dg049384; Sun, 12 Feb 2006 06:30:06 GMT (envelope-from gnats) Resent-Date: Sun, 12 Feb 2006 06:30:06 GMT Resent-Message-Id: <200602120630.k1C6U6dg049384@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-sparc64@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Kris Kennaway Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4F0DA16A420 for ; Sun, 12 Feb 2006 06:20:52 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: from elvis.mu.org (elvis.mu.org [192.203.228.196]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2072443D45 for ; Sun, 12 Feb 2006 06:20:52 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: from obsecurity.dyndns.org (elvis.mu.org [192.203.228.196]) by elvis.mu.org (Postfix) with ESMTP id 00C8C1A3C1B; Sat, 11 Feb 2006 22:20:51 -0800 (PST) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id 51200514CC; Sun, 12 Feb 2006 01:20:51 -0500 (EST) Message-Id: <20060212062051.51200514CC@obsecurity.dyndns.org> Date: Sun, 12 Feb 2006 01:20:51 -0500 (EST) From: Kris Kennaway To: FreeBSD-gnats-submit@FreeBSD.org X-Send-Pr-Version: 3.113 Cc: Antoine Brodin Subject: sparc64/93226: DEBUG_LOCKS (really stack_save()) causes panics on sparc64 X-BeenThere: freebsd-sparc64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the Sparc List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Feb 2006 06:30:08 -0000 >Number: 93226 >Category: sparc64 >Synopsis: DEBUG_LOCKS (really stack_save()) causes panics on sparc64 >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-sparc64 >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sun Feb 12 06:30:06 GMT 2006 >Closed-Date: >Last-Modified: >Originator: Kris Kennaway >Release: FreeBSD 7.0-CURRENT sparc64 >Organization: >Environment: FreeBSD/sparc64 7.0 >Description: With option DEBUG_LOCKS in the kernel, the stack(9) code that is intended to save stack traces when lockmgr locks are acquired is broken: > panic: trap: fast data access mmu miss > cpuid = 1 > KDB: enter: panic > [thread pid 1 tid 100009 ] > Stopped at kdb_enter+0x3c: ta %xcc, 1 > db> wh > Tracing pid 1 tid 100009 td 0xfffff800fed24750 > panic() at panic+0x164 > trap() at trap+0x418 > -- fast data access mmu miss tar=0x7fdffffe000 %o7=0xc027c940 -- > stack_save() at stack_save+0x24 [...] >How-To-Repeat: Build and boot a kernel with options DEBUG_LOCKS >Fix: A similar bug existed on i386, and was fixed in http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/i386/i386/db_trace.c.diff?r1=1.69&r2=1.70 >Release-Note: >Audit-Trail: >Unformatted: