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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 5B18CE8783D for ; Tue, 3 Feb 2026 15:37:13 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BC85B10E28A; Tue, 3 Feb 2026 15:37:12 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="aRbMDmyE"; dkim-atps=neutral Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7C0EB10E28A; Tue, 3 Feb 2026 15:37:11 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 72BC660144; Tue, 3 Feb 2026 15:37:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0EC35C116D0; Tue, 3 Feb 2026 15:37:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1770133030; bh=+92HvwUv0D9Te2Lzog9lTtSDIhdyomwaTdqHn2cdgqY=; h=Date:Subject:Cc:To:From:References:In-Reply-To:From; b=aRbMDmyEJUJJxr/uuq9hcztqChiHwbrX2U52O2ZmrE6uR3ctLPeQ9E2wa/T9I88KK h6jos09N/q+B6uWsRbAOUkebuRVDIwVBEz+dxI+R9+Qz6w+Gm5xbcvjRWalh2nwNC6 GuBaNEkzsOMTvNmsLUGL+O0oWRTmNRPSKY4Rbq0Urbbv6dqdnnL3Q8pOVdL8M1hKlv Tc3lvlJ55yLP4G4nl1I5FU23GGW6Gxe5dyQt25A2XGgkAY+s1HymyAMM6j1zmIeVwN S73w2taQiUNrdTQu3nf7y2ES+4KrH9dNWVpo0p8XQyclAfKMl1kwx0YRLZv9Tb8Yej LCbAK8wTUCiLg== Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Tue, 03 Feb 2026 16:37:06 +0100 Message-Id: Subject: Re: NV04, 6.18.8 crashes on NULL pointer dereference Cc: =?utf-8?q?Bruno_Pr=C3=A9mont?= , , , "Lyude Paul" , , "Dave Airlie" , "Maarten Lankhorst" , "Simona Vetter" , "Thomas Zimmermann" , "Maxime Ripard" To: "Greg KH" From: "Danilo Krummrich" References: <20260201185705.0c5364f1@hemera.lan.sysophe.eu> <20260201231451.1ef0128c@hemera.lan.sysophe.eu> <2026020353-running-unhelpful-fbd2@gregkh> In-Reply-To: <2026020353-running-unhelpful-fbd2@gregkh> 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" On Tue Feb 3, 2026 at 3:38 PM CET, Greg KH wrote: > On Sun, Feb 01, 2026 at 11:14:51PM +0100, Bruno Pr=C3=A9mont wrote: >> Bisect completed. >>=20 >> The offending patch is: >> commit 448a2071a843831fe5fa71545cbfa7e15ee8966d (HEAD) >> Author: Lyude Paul >> Date: Wed Jan 21 14:13:10 2026 -0500 >>=20 >> drm/nouveau/disp: Set drm_mode_config_funcs.atomic_(check|commit) >> =20 >> commit 604826acb3f53c6648a7ee99a3914ead680ab7fb upstream. >> =20 >> Apparently we never actually filled these in, despite the fact that = we do >> in fact technically support atomic modesetting. >> =20 >> Since not having these filled in causes us to potentially forget to = disable >> fbdev and friends during suspend/resume, let's fix it. >> =20 >> Signed-off-by: Lyude Paul >> Cc: stable@vger.kernel.org >> Reviewed-by: Dave Airlie >> Link: https://patch.msgid.link/20260121191320.210342-1-lyude@redhat.= com >> Signed-off-by: Greg Kroah-Hartman >>=20 >> drivers/gpu/drm/nouveau/nouveau_display.c | 2 ++ >> 1 file changed, 2 insertions(+) >>=20 >>=20 >> It landed in 6.18.8. Seems like not all chip generations are ready for >> atomic modesetting. > > Is this also a problem in 6.19-rc? I did not test it, but a different mail [1] suggests that John did reproduc= e this in 6.19-rc7 too. I've already picked up a revert [2], which should be in linux-next and shou= ld soon be in Linus' tree as well. [1] https://lore.kernel.org/all/87h5s34d36.fsf@jogness.linutronix.de/ [2] https://patch.msgid.link/20260130113230.2311221-1-john.ogness@linutroni= x.de