From owner-freebsd-current@FreeBSD.ORG Wed Dec 20 14:03:34 2006 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 792D816A403 for ; Wed, 20 Dec 2006 14:03:34 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from relay01.kiev.sovam.com (relay01.kiev.sovam.com [62.64.120.200]) by mx1.FreeBSD.org (Postfix) with ESMTP id CC67743CA9 for ; Wed, 20 Dec 2006 14:01:52 +0000 (GMT) (envelope-from kostikbel@gmail.com) Received: from [212.82.216.227] (helo=fw.zoral.com.ua) by relay01.kiev.sovam.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.60) (envelope-from ) id 1Gx0lq-000Bl6-3V for freebsd-current@freebsd.org; Wed, 20 Dec 2006 14:42:14 +0200 Received: from deviant.kiev.zoral.com.ua (root@deviant.kiev.zoral.com.ua [10.1.1.148]) by fw.zoral.com.ua (8.13.4/8.13.4) with ESMTP id kBKCeXMB050346 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 20 Dec 2006 14:40:33 +0200 (EET) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.13.8/8.13.8) with ESMTP id kBKCeXsn067522; Wed, 20 Dec 2006 14:40:33 +0200 (EET) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.13.8/8.13.8/Submit) id kBKCeWge067521; Wed, 20 Dec 2006 14:40:32 +0200 (EET) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Wed, 20 Dec 2006 14:40:32 +0200 From: Kostik Belousov To: Dmitry Pryanishnikov Message-ID: <20061220124032.GC23698@deviant.kiev.zoral.com.ua> References: <20061219175917.L84683@atlantis.atlantis.dp.ua> <20061220130559.P54963@atlantis.atlantis.dp.ua> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="9aHjqRFB8NC1b71K" Content-Disposition: inline In-Reply-To: <20061220130559.P54963@atlantis.atlantis.dp.ua> User-Agent: Mutt/1.4.2.2i X-Virus-Scanned: ClamAV version 0.88.7, clamav-milter version 0.88.7 on fw.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-0.1 required=5.0 tests=ALL_TRUSTED,SPF_NEUTRAL autolearn=failed version=3.1.7 X-Spam-Checker-Version: SpamAssassin 3.1.7 (2006-10-05) on fw.zoral.com.ua X-Scanner-Signature: f216f799903dddc2f9accd11d8a1fded X-DrWeb-checked: yes X-SpamTest-Envelope-From: kostikbel@gmail.com X-SpamTest-Group-ID: 00000000 X-SpamTest-Info: Profiles 631 [Dec 20 2006] X-SpamTest-Info: helo_type=3 X-SpamTest-Info: {received from trusted relay: not dialup} X-SpamTest-Method: none X-SpamTest-Method: Local Lists X-SpamTest-Rate: 0 X-SpamTest-Status: Not detected X-SpamTest-Status-Extended: not_detected X-SpamTest-Version: SMTP-Filter Version 3.0.0 [0255], KAS30/Release Cc: freebsd-current@freebsd.org Subject: Re: ddb(4) spoils kernel stack in CURRENT? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Dec 2006 14:03:34 -0000 --9aHjqRFB8NC1b71K Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Dec 20, 2006 at 01:18:39PM +0200, Dmitry Pryanishnikov wrote: >=20 > Hello! >=20 > On Tue, 19 Dec 2006, Dmitry Pryanishnikov wrote: > >I've tried to repeat this under the RELENG_6 as of 30-Oct (just removing > >kernel options COMPAT_43TTY, COMPAT_FREEBSD6, INVARIANTS,=20 > >INVARIANT_SUPPORT, > >and using 'debug.kdb.enter' instead of 'debug.kdb.panic') - and kgdb=20 > >unwinds > >the stack even if the dump got via typing 'panic' from ddb: >=20 > Today I've tried this with the fresh (20-Dec) RELENG_6 and with=20 > INVARIANTS* > (so the only difference between kernel configs are CURRENT-only options > COMPAT_43TTY and COMPAT_FREEBSD6). No differences - kgdb successfully > unwinds the stack under RELENG_6. It seems that the following stands: >=20 > >So it looks like a regression in CURRENT vs RELENG_6 (either ddb 'spoils= '=20 > >the stack somehow, or kgdb fails to unwind it). Could you further localize the problem, i.e. try to backtrace CURRENT dump by RELENG_6 kgdb and vice versa. --9aHjqRFB8NC1b71K Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFFiS9AC3+MBN1Mb4gRAvlSAKDtjEQn4EDw8vr9gg8fZ/BGw0fdHgCffsBI WN9b9WVTAijUEYiVRO+Elas= =LMby -----END PGP SIGNATURE----- --9aHjqRFB8NC1b71K--