From owner-freebsd-bugs@freebsd.org Thu Oct 1 15:07:42 2020 Return-Path: Delivered-To: freebsd-bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id CC68B42ADC8 for ; Thu, 1 Oct 2020 15:07:42 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (mailman.nyi.freebsd.org [IPv6:2610:1c1:1:606c::50:13]) by mx1.freebsd.org (Postfix) with ESMTP id 4C2GhG531Vz4Fvk for ; Thu, 1 Oct 2020 15:07:42 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id AB1E842AC55; Thu, 1 Oct 2020 15:07:42 +0000 (UTC) Delivered-To: bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id AAE4842AB50 for ; Thu, 1 Oct 2020 15:07:42 +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 "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4C2GhG46CYz4FsR for ; Thu, 1 Oct 2020 15:07:42 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) 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 708E2125FB for ; Thu, 1 Oct 2020 15:07:42 +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 091F7gRo069557 for ; Thu, 1 Oct 2020 15:07:42 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 091F7gK2069556 for bugs@FreeBSD.org; Thu, 1 Oct 2020 15:07:42 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 229995] [panic, regression] radeonkms "timed sleep before timers are working" Date: Thu, 01 Oct 2020 15:07:42 +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: 11.2-RELEASE X-Bugzilla-Keywords: panic, regression X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: imp@FreeBSD.org X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc 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 MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Oct 2020 15:07:42 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D229995 Warner Losh changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |imp@FreeBSD.org --- Comment #5 from Warner Losh --- To elaberate, loading the linuxkpi drivers from loader.conf causes the modu= les to load earlier in the boot sequence before interrupts are enabled, threads= are running and everything is fully initialized. There are dependencies in the = code on these things working, so when they aren't the system crashes. One of three things can make this better: (1) Make the code fail to load if loaded too early and print a warning (fail safe). (2) Fix the code to work early in boot or (3) Make the code do a deferred attach fo the drivers until after interrupts are running. 1 & 3 are likely easy, but would require some fussing around to get right. = 2 is likely quite hard and would take a fair amount of effort. Of the three, I'd recommend #3 for anybody looking at this bug. I'm not entirely sure that #3 would work, but reasonably sure. --=20 You are receiving this mail because: You are the assignee for the bug.=