From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9BFDEC432BE for ; Fri, 13 Aug 2021 17:50:32 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5BFD6610CC for ; Fri, 13 Aug 2021 17:50:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 5BFD6610CC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=bugzilla.kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 19D716E8B9; Fri, 13 Aug 2021 17:50:31 +0000 (UTC) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id 24AEA6E8B9 for ; Fri, 13 Aug 2021 17:50:30 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPS id DEB99610E9 for ; Fri, 13 Aug 2021 17:50:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1628877029; bh=wLSIBeqn8mYsILOmBkINtrpBFFGxm/J2r6jMLXYPdh8=; h=From:To:Subject:Date:In-Reply-To:References:From; b=Q5A8MM4CKaFRzwBGPaCuA0Zdi2JnsGnOSgJ1QcB6Fx7f+KT+FzqIhYDHPSYyPTACP z0/isDoHF88IKRDxzFlnnazqnifunfMRhLi0p3jIYbzr5p+3HNDokOYbmCw50/hOD3 OzWhM/j+qeIL3+3jPLv2WEaLQJoupiB9B44w9aThhgBUwrKwibkmpjXj/4BSoPps0h m6DIIxU9gSqI433JHJY3MvFZ/s8hEF6JJaDn2q+z8kYejn6ihw5TpuDjMVNsQjEoyO nL4KZAjvojgi8WFDG3KexqhZ7aMxWURnnkPOvRmWO1oB8Bq2elvmtCdxImdnpG0juU Nmq7z0EygHybg== From: bugzilla-daemon@bugzilla.kernel.org To: dri-devel@lists.freedesktop.org Subject: [Bug 214001] [bisected][regression] After commit "drm/ttm: Initialize debugfs from ttm_global_init()" kernels without debugfs explicitly set to 'allow all' fail to boot Date: Fri, 13 Aug 2021 17:50:29 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_video-dri@kernel-bugs.osdl.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: Video(Other) X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: 1i5t5.duncan@cox.net X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: drivers_video-dri@kernel-bugs.osdl.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://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" https://bugzilla.kernel.org/show_bug.cgi?id=3D214001 Duncan (1i5t5.duncan@cox.net) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |1i5t5.duncan@cox.net --- Comment #2 from Duncan (1i5t5.duncan@cox.net) --- This has been reported (by someone else) on the dri-devel list (with the ma= in kernel list and the devs CCed) as well, with me confirming it there. No an= swer from the devs there either. The reporter and I followed reporting instruct= ions to take it to the list, and no hint it was even seen, despite the release getting closer and closer. So I was going to try bugzilla (despite instructions to take it to the list= ), to see if I could raise the profile a bit, and find this bug. Anyway, it's on both channels now. FWIW: https://lore.kernel.org/dri-devel/?q=3D5.14.0-rc4+broke+drm%2Fttm Tho FWIW your symptoms are a bit different than those of the OP there and I= .=20 We were able to boot, but only to legacy low-res VGA mode. He has a boot-splash enabled and the screen blanked from early boot when the drm-framebuffer would normally take over until the login prompt, which appe= ared in vga mode. I prefer to see the boot messages so no splash, and didn't ha= ve it blank, the screen just never left the legacy vga mode it normally uses f= or early boot. We're both on Radeons; he's on the old radeon driver while I'm= on amdgpu (polaris-11, rx460). I wonder if you don't have the legacy vgacon (CONFIG_VGA_CONSOLE) enabled a= s a fall-back, as that would explain an apparent hang due to no valid graphics = (tho the system may have booted, just without graphics). Alternatively, I don't know what the behavior of non-radeon/amdgpu drm-framebuffer drivers is, may= be whatever you're running either does hang or simply doesn't fall back to vga= con as our radeon and amdgpu drivers did? But in both his case and mine it bisected to the same commit, 69de4421bb, a= nd reverting it against current gave both of us working systems again, so it's= the same bug. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=