From patchwork Thu Jan 2 22:08:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234672 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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 85875C3276E for ; Thu, 2 Jan 2020 22:40:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 503D720866 for ; Thu, 2 Jan 2020 22:40:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578004805; bh=8ptzUG2PeyEr2rau9AYI/YXSZyrBs6qffUwwHWVvqYE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=099XF2CAH8gXbSvVX8x02TCgDQHINXyg2LJEYB/KHl2slMjBzVIAK1rANUNn/Aqd4 S/K40yMbtYdURn7ZlY+0KeEZRzx8NObMiPdeaRXF79fZ0gieVN5oyuj+JDBTejHBsS Hv8Zf2WO43GLMTc3aFfWnI0k+Odw4sesWnUBldRk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731047AbgABWip (ORCPT ); Thu, 2 Jan 2020 17:38:45 -0500 Received: from mail.kernel.org ([198.145.29.99]:53346 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731343AbgABWio (ORCPT ); Thu, 2 Jan 2020 17:38:44 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B874E2467D; Thu, 2 Jan 2020 22:38:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578004724; bh=8ptzUG2PeyEr2rau9AYI/YXSZyrBs6qffUwwHWVvqYE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vGcO47MWpfhbMaRrRClnBjOi9mwNNBwb+qvHTYjD7Dbxc3FxSaitGoMKRSiDiHeOz xEdK3gvT1M3BJaMyMhzZX3/EOjaEwT9Kr3zvN8LqCLYHRUX/Ci1y6p6psqMjw+Ry1m rp+UPmdQMvDOc2YvXGFjPxseNnBbWBKzbygX3V/I= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, syzbot+b3028ac3933f5c466389@syzkaller.appspotmail.com, Takashi Iwai , Sasha Levin Subject: [PATCH 4.4 127/137] ALSA: hda - Downgrade error message for single-cmd fallback Date: Thu, 2 Jan 2020 23:08:20 +0100 Message-Id: <20200102220604.236358907@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220546.618583146@linuxfoundation.org> References: <20200102220546.618583146@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Takashi Iwai [ Upstream commit 475feec0c41ad71cb7d02f0310e56256606b57c5 ] We made the error message for the CORB/RIRB communication clearer by upgrading to dev_WARN() so that user can notice better. But this struck us like a boomerang: now it caught syzbot and reported back as a fatal issue although it's not really any too serious bug that worth for stopping the whole system. OK, OK, let's be softy, downgrade it to the standard dev_err() again. Fixes: dd65f7e19c69 ("ALSA: hda - Show the fatal CORB/RIRB error more clearly") Reported-by: syzbot+b3028ac3933f5c466389@syzkaller.appspotmail.com Link: https://lore.kernel.org/r/20191216151224.30013-1-tiwai@suse.de Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- sound/pci/hda/hda_controller.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/sound/pci/hda/hda_controller.c +++ b/sound/pci/hda/hda_controller.c @@ -673,7 +673,7 @@ static int azx_rirb_get_response(struct return -EAGAIN; /* give a chance to retry */ } - dev_WARN(chip->card->dev, + dev_err(chip->card->dev, "azx_get_response timeout, switching to single_cmd mode: last cmd=0x%08x\n", bus->last_cmd[addr]); chip->single_cmd = 1;