From owner-freebsd-current@FreeBSD.ORG Tue Apr 2 06:10:26 2013 Return-Path: Delivered-To: freebsd-current@FreeBSD.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 3C9BE195 for ; Tue, 2 Apr 2013 06:10:26 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id 83EC09FC for ; Tue, 2 Apr 2013 06:10:25 +0000 (UTC) Received: from porto.starpoint.kiev.ua (porto-e.starpoint.kiev.ua [212.40.38.100]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id JAA03479; Tue, 02 Apr 2013 09:10:23 +0300 (EEST) (envelope-from avg@FreeBSD.org) Received: from localhost ([127.0.0.1]) by porto.starpoint.kiev.ua with esmtp (Exim 4.34 (FreeBSD)) id 1UMuQI-000ABA-Pe; Tue, 02 Apr 2013 09:10:22 +0300 Message-ID: <515A764C.6010401@FreeBSD.org> Date: Tue, 02 Apr 2013 09:10:20 +0300 From: Andriy Gapon User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:17.0) Gecko/20130321 Thunderbird/17.0.4 MIME-Version: 1.0 To: Fabian Keil Subject: Re: panic: solaris assert: sa.sa_magic == 0x2F505A (0x4d5ea364 == 0x2f505a), file: /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c, line: 625 References: <20130401161813.6e42e2a1@fabiankeil.de> <5159A517.5070802@FreeBSD.org> <20130401175126.1d28b0f4@fabiankeil.de> <5159B448.2080500@FreeBSD.org> In-Reply-To: <5159B448.2080500@FreeBSD.org> X-Enigmail-Version: 1.5.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: FreeBSD Current X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 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: Tue, 02 Apr 2013 06:10:26 -0000 on 01/04/2013 19:22 Andriy Gapon said the following: > on 01/04/2013 18:51 Fabian Keil said the following: >> vmcore.13: >> >> (kgdb) p *dn->dn_phys >> Cannot access memory at address 0xffffff8015eeb800 >> (kgdb) p *dn->dn_dbuf >> $1 = {db = {db_object = 0, db_offset = 28491776, db_size = 16384, db_data = 0xffffff8015eeb000}, db_objset = 0xfffffe00691a5000, db_dnode_handle = 0xfffffe00691a5020, db_parent = 0xfffffe004254ab60, >> db_hash_next = 0x0, db_blkid = 1739, db_blkptr = 0xffffff8015d65580, db_level = 0 '\0', db_mtx = {lock_object = {lo_name = 0xffffffff811d8696 "db->db_mtx", lo_flags = 40960000, lo_data = 0, >> lo_witness = 0x0}, sx_lock = 1}, db_state = DB_CACHED, db_holds = {rc_count = 2}, db_buf = 0xfffffe0042bedcf0, db_changed = {cv_description = 0xffffffff811d86a2 "db->db_changed", cv_waiters = 0}, >> db_data_pending = 0xfffffe00406d6500, db_last_dirty = 0xfffffe00406d6500, db_link = {list_next = 0xfffffe0042758c10, list_prev = 0xfffffe0069cab5f8}, db_user_ptr = 0xfffffe0069f70000, >> db_user_data_ptr_ptr = 0x0, db_evict_func = 0xffffffff81105770 , db_immediate_evict = 0 '\0', db_freed_in_flight = 0 '\0', db_dirtycnt = 1 '\001'} > > That's interesting. So db.db_data has a bogus address. > Not sure how that could happen and what to make of it yet. > In fact, this was a bogus comment :-) I forgot that dn_phys points inside a ZFS data buffer and those do not get dumped. -- Andriy Gapon