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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9049FC433EF for ; Thu, 12 May 2022 18:16:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357521AbiELSPR (ORCPT ); Thu, 12 May 2022 14:15:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59436 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357509AbiELSPO (ORCPT ); Thu, 12 May 2022 14:15:14 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E9A4F26FA4A for ; Thu, 12 May 2022 11:15:11 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 70AA021B15; Thu, 12 May 2022 18:15:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1652379310; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=y5mM0HQM8pAQjku1w2nmlt4lHhMPdkzOuqIdXoLXS4Q=; b=E1bPL/RMWjkG/VM2r/nQONAtXYN0KRTYjM59dZnqMk2diAqQQ26BmNtFBmR2MijBvdoyuJ bKMni5HDVKOoLTsp4WrxKwQd9eMZGVzSXCq7M9PQy4GxRoswGggXG7aR9eUc085zzddpwQ ACpGrceWeQZbqz+MLovQGwzLrQ34yWA= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1652379310; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=y5mM0HQM8pAQjku1w2nmlt4lHhMPdkzOuqIdXoLXS4Q=; b=Hem4fo4S7qi3PlmN8P6pL6clusERWO57cjmyletsW7el6O4y8bKHgVogXMXdMZtYeI/TMN 2m/YCUIqoAugngDw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 0A1F113A84; Thu, 12 May 2022 18:15:10 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id tv6BAK5OfWLANgAAMHmgww (envelope-from ); Thu, 12 May 2022 18:15:10 +0000 Date: Thu, 12 May 2022 20:15:08 +0200 From: =?iso-8859-1?Q?J=F6rg_R=F6del?= To: Alex Deucher Cc: "Wentland, Harry" , "Siqueira, Rodrigo" , "Kazlauskas, Nicholas" , Alex Deucher , Christian Koenig , xinhui pan , David Airlie , Maling list - DRI developers , amd-gfx list , LKML Subject: Re: [BUG] Warning and NULL-ptr dereference in amdgpu driver with 5.18 Message-ID: References: <505081FC-4323-4424-87A9-89B95A89515D@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 12, 2022 at 09:47:29AM -0400, Alex Deucher wrote: > Are those new? Maybe the card is not seated correctly? Can you try > another slot? I can't remember having seen these TLP error messages with older kernels. 5.17 still works fine with this card. I will try to put the card into another slot tomorrow. > As for the null pointer defer in the display code, @Wentland, Harry > any ideas? I don't see why that should happen. Maybe some hotplug > pin is faulty or the display has input detection and that is causing > some sort of hotplug interrupt that causes a race somewhere in the > driver? Can you make sure the monitor connector is firmly seated on > the GPU? The connectors are fine, the displays are connected via miniDP on the GPU and DP on the display side. On the other hand my monitors do not seem to have the highest quality. Occassionally the resolution is wrongly detected or DP signal is lost. I am not sure why, I suspect there is some interference between the two DP cables. But this is a problem for as long as I have these two monitors, the NULL-ptr deref only happens with v5.18. Regards, -- Jörg Rödel jroedel@suse.de SUSE Software Solutions Germany GmbH Maxfeldstr. 5 90409 Nürnberg Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Ivo Totev