Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754575Ab2HUJKl (ORCPT ); Tue, 21 Aug 2012 05:10:41 -0400 Received: from lxorguk.ukuu.org.uk ([81.2.110.251]:54818 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754956Ab2HUJKf (ORCPT ); Tue, 21 Aug 2012 05:10:35 -0400 Date: Tue, 21 Aug 2012 10:15:05 +0100 From: Alan Cox To: Dave Airlie Cc: linux-fbdev@vger.kernel.org, dri-devel@lists.sf.net, linux-kernel@vger.kernel.org, Linus , Randy Dunlap , Josh Boyer Subject: Re: [PATCH] fbcon: fix race condition between console lock and cursor timer Message-ID: <20120821101505.61c0221a@pyramind.ukuu.org.uk> In-Reply-To: <1345531207-24926-1-git-send-email-airlied@redhat.com> References: <1345531207-24926-1-git-send-email-airlied@redhat.com> X-Mailer: Claws Mail 3.8.0 (GTK+ 2.24.8; x86_64-redhat-linux-gnu) Face: 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 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 759 Lines: 20 > So after much tracing with direct netconsole writes (printks > under console_lock not so useful), I think I found the race. Direct netconsole write would be a useful patch to have mainline I think 8) > Hopefully this fixes the problem for anyone seeing vesafb->kms > driver handoff. Not really the proper fix but its clear and is probably the best thing to go in initially with a cc: stable. Can you at least stick a large + /* FIXME: we should sort out the unbind locking instead */ on the patch however. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/