From nobody Sat Jun 19 22:50:03 2021 X-Original-To: freebsd-arm@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id CA7CA11DDD8A for ; Sat, 19 Jun 2021 22:50:06 +0000 (UTC) (envelope-from jfc@mit.edu) Received: from outgoing-exchange-5.mit.edu (outgoing-exchange-5.mit.edu [18.9.28.59]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.outgoing-exchange.mit.edu", Issuer "InCommon RSA Server CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4G6rbK5ky6z3D91 for ; Sat, 19 Jun 2021 22:50:05 +0000 (UTC) (envelope-from jfc@mit.edu) Received: from oc11exedge2.exchange.mit.edu (OC11EXEDGE2.EXCHANGE.MIT.EDU [18.9.3.18]) by outgoing-exchange-5.mit.edu (8.14.7/8.12.4) with ESMTP id 15JMo3ga008911 for ; Sat, 19 Jun 2021 18:50:04 -0400 Received: from w92expo29.exchange.mit.edu (18.7.74.41) by oc11exedge2.exchange.mit.edu (18.9.3.18) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Sat, 19 Jun 2021 18:49:51 -0400 Received: from OC11EXPO29.exchange.mit.edu (18.9.4.102) by w92expo29.exchange.mit.edu (18.7.74.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 19 Jun 2021 18:50:03 -0400 Received: from OC11EXPO29.exchange.mit.edu ([18.9.4.102]) by oc11expo29.exchange.mit.edu ([18.9.4.102]) with mapi id 15.00.1497.015; Sat, 19 Jun 2021 18:50:03 -0400 From: John F Carr To: freebsd-arm Subject: Panic loading linsysfs with INVARIANTS configured Thread-Topic: Panic loading linsysfs with INVARIANTS configured Thread-Index: AQHXZV1w9YEalozaZEOmiNk8eedaVQ== Date: Sat, 19 Jun 2021 22:50:03 +0000 Message-ID: <1C393737-2A10-4F19-8AC9-D75CF6F0A454@exchange.mit.edu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [108.7.221.50] Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable List-Id: Porting FreeBSD to ARM processors List-Archive: https://lists.freebsd.org/archives/freebsd-arm List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-arm@freebsd.org MIME-Version: 1.0 X-Rspamd-Queue-Id: 4G6rbK5ky6z3D91 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of jfc@mit.edu designates 18.9.28.59 as permitted sender) smtp.mailfrom=jfc@mit.edu X-Spamd-Result: default: False [-3.43 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; RCVD_COUNT_FIVE(0.00)[5]; HAS_XOIP(0.00)[]; FROM_HAS_DN(0.00)[]; RWL_MAILSPIKE_GOOD(0.00)[18.9.28.59:from]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+ip4:18.9.28.0/24]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-arm@freebsd.org]; DMARC_NA(0.00)[mit.edu]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-1.00)[-1.000]; TO_DN_ALL(0.00)[]; RCVD_IN_DNSWL_MED(-0.20)[18.9.28.59:from]; NEURAL_HAM_SHORT(-0.93)[-0.935]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:3, ipnet:18.9.0.0/16, country:US]; RCVD_TLS_LAST(0.00)[]; MAILMAN_DEST(0.00)[freebsd-arm] X-ThisMailContainsUnwantedMimeParts: N On a server class ARM (Ampere) running an up to date stable/13 kernel with = INVARIANTS I get a panic in VFS code if I kldload linsysfs: pfs_add_node: homonymous siblings Anybody else see this recently? On a Raspberry Pi 3B with INVARIANTS the kldload works. There is a comment before the panic code /* XXX no locking! */ which makes me wonder if 32 cores is too many for this code. (Related to this: Does anybody get crash dumps on an Ampere system? If I c= onfigure DDB and use the debugger crash dump command it hangs after the 1% = progress line. Without the debugger the system just hangs without printing= any progress, but at least I can see the panic message before I power cycl= e it.)=