From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D9FE61714DC; Sun, 22 Sep 2024 04:58:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726981136; cv=none; b=UrTTnB9rdnU/LIACgY9XS6M0/Fl3egNcN9Rvo1WN6wAYII6yq6lxDno1S0DI5/ia/HcbZkBKt0qT7z1RVrDJsCn7VVgdCyjFSjAuymjVBDkpcAClJ3iyY1a0C1nEy3dpMeMvZ1KmRAJsE//NXkZClpC1fY3i47N2Fd5d5M4+Tdk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726981136; c=relaxed/simple; bh=YXSLY+t5FY79TwoYTLkj4tm4Eecv8wZq12EaL5qdblk=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=pqi16JUxsuWwyC/nk8p5YdFLo8TnKzrJ6UERuj/WPCP5lrXP4ocOC90e1wAagRJBGBh8aydIgK0DpLFFEIN7ls9ANOnYMXIsiE38Sw8cKVCDErEotviPqMpxM7mleOsYnkXz7y1J7tNf352xGBiFIyDkOGjMt+BiEzgyqzZwo9c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=3QqjYo4H; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="3QqjYo4H" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Transfer-Encoding :Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Sender:Reply-To:Content-ID:Content-Description; bh=N2RfHzIMHib6uiU/FDsboA5V6UkKty537wvUbBdRcbI=; b=3QqjYo4H2cax8ZRWJhRojE20AL WPZBJCUCrR5OmbFxHR06Njpup8WdcSv611N9et6Fj+vHpqIKFxfheVuslkvbrFv2kW9iD5tmFAqUm J8iiGGNJ8VaGmCwgDM758xXiPeRCpDIwF9raWIgA3JPyMTTf4SDPgTyj7W55j0Cp3OVRak/9DUyr8 WRJO2tCCuzcgm4AgEHYe8kOljWwTMBwIhFqXnquL7E2+aN/lJZhF6T+qR1N+e3fu4PvbHPJnfQyyV OOn2f2SKhnSMpYau1AMgbjJBFNv6Jk2VnXFEeUQG50mWnFnb8mcT+kqugFxYXNZ18X+Nkcmp8FxGy jbAOccQw==; Received: from hch by bombadil.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1ssEgL-0000000EiSq-22fH; Sun, 22 Sep 2024 04:58:49 +0000 Date: Sat, 21 Sep 2024 21:58:49 -0700 From: Christoph Hellwig To: Xi Ruoyao Cc: Christoph Hellwig , Linus Torvalds , linux-kernel@vger.kernel.org, iommu@lists.linux.dev Subject: Re: [GIT PULL] dma-mapping updates for Linux 6.12 Message-ID: References: <971fbb889da38ca4e60f3dedde29ea43e9338d68.camel@xry111.site> <19e4bdbcda78ace200c78c56eb7173097337b921.camel@xry111.site> <9a84a7c6f943209cc87a54075ed22df37ebda5f8.camel@xry111.site> <38bc765eaba8a646a87ce14e1ff06f28d449fcd5.camel@xry111.site> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <38bc765eaba8a646a87ce14e1ff06f28d449fcd5.camel@xry111.site> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Sun, Sep 22, 2024 at 01:49:35AM +0800, Xi Ruoyao wrote: > On Sat, 2024-09-21 at 06:51 -0700, Christoph Hellwig wrote: > > On Sat, Sep 21, 2024 at 03:56:11PM +0800, Xi Ruoyao wrote: > > > because the laptop has no serial output.  And the behavior seems not > > > deterministic.  I have some transcript of messages I photoed in several > > > boot attempts though: > > > > Can you send me the photos of the messages?  Probably best offlist > > as the lists don't like attachments. > > I've got something better: one attempt to boot > b5c58b2fdc427e7958412ecb2de2804a1f7c1572 succeeded and I got a dmesg > containing some Oops traces. > > The camera does *not* work. And when I rebooted the system it hung > (presumably related to these Oops). So that oops actually comes from the sounds code and looks unrelated to DMA. I suspect that oops is what caused your crashes and thus messed up the DMA bisection. Can you try to boot with CONFIG_SND disabled and see where the bisection for the video issues lands? (Sorry that all this is such a mess)