From nobody Sun Dec 11 17:38:02 2022 X-Original-To: bugs@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 4NVX6323gkz4jmgD for ; Sun, 11 Dec 2022 17:38:03 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4NVX630hNhz3Nvs for ; Sun, 11 Dec 2022 17:38:03 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1670780283; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=w3mz4QsMmRlgU5lo/DPj3Mq2hoYO1kRk5kzDkIZ+Yro=; b=Gx23OMEgT3Tmm5JloVl0H+eRfNibGNQZcbLUj2zSa5VNEs4as2a23VK14j11bNeFHC4Zhr +7BXo5+TOzY8UP1V+bCujQg9ONUG6fDxyLmHdgOYrjtTu4sb5QAuaPTYxx5A3t2jlUhOO+ 5yp5afs7VT2HOiKau6ifvmhqoNRdMT1OBdHEQTiFSXT+TBya/zW0Q8zXOJII7EZTGK6onR sxrK1/hQwuZ1OrBnfsI7O3S5ouU24PLdvAuoKrl/ok+50xreQkyKuZ58niRAKAT2//WJgQ drcgsicHGs8fmcAAbj+9NHPdhet+tCdkqULNWI30aw63w1e8GXXQd1epgDm3gg== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1670780283; a=rsa-sha256; cv=none; b=Lkb/bn1Kc+64n/tk2yF5uD1LIRXJNMydT4aQVlcKPd/Brj3N3FgKyEMnKXeEwGbr8A6g0S jzgGLjksyK2WTwGDSicpmr++DgpwbvtiL1rQUVG15hzRL0s0+AFo2S5CufzQQBRJxgogof yIFWfMW3mJ5InRb/4N3DxXtG7lSZBN5+HeG6ZkcrqYmZ6xvPA5KMLNlJ0ZrqO2XHueGwIQ l0ewuwuGb3qLe3Wt3hOcZk417DlKgYsmFWMgFZlMQuuLj3hDX31aWGOhXkGCojdmzzEUqd qknkiIRqHo49W3Z5N1qVxGO8hLr2Of8EvxLi38MXS5ocIjEv4hKAHdI0rEPA/A== Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4NVX626vGbz13HN for ; Sun, 11 Dec 2022 17:38:02 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 2BBHc2TZ033072 for ; Sun, 11 Dec 2022 17:38:02 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 2BBHc2Rb033071 for bugs@FreeBSD.org; Sun, 11 Dec 2022 17:38:02 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 267028] General protection fault kernel panic immediately after kldload amdgpu Date: Sun, 11 Dec 2022 17:38:02 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 13.1-RELEASE X-Bugzilla-Keywords: crash, needs-qa X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: george@m5p.com X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@freebsd.org MIME-Version: 1.0 X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D267028 --- Comment #20 from George Mitchell --- I've figured out why this crash is timing related, and also why ZFS is involved. My system has a 1 TB USB disk, which contains a ZFS file system. When I po= wer my system on, it takes a variable amount of time for that disk to become re= ady and for ZFS to take note of it. (I'm booting from a SATA disk with a traditional old UFS file system.) So if the USB disk becomes ready while amdgpu is still initializing, apparently this crash happens. I have no clue why that is true, but I am pretty sure this explains why the the crash happ= ens only part of the time and is timing dependent. It remains true that the most reliable way to cause the crash is to include amdgpu in the kld_list in /etc/rc.conf and simply boot normally (and to hav= e a *ZFS-formatted USB* disk attached to the system). --=20 You are receiving this mail because: You are the assignee for the bug.=