From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from xry111.site (xry111.site [89.208.246.23]) (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 C234D2AE66 for ; Sun, 22 Sep 2024 06:57:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=89.208.246.23 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726988226; cv=none; b=M23NwU8vnBQMkN0VFPLrm9SzChUollMLtapKPXjHsQtCUkee9JeTGwPw5C3786dL+aaK25fP/vzxcIOJVGtKpO3+oMKiYkF8Cg+mMGG+dToaFgzUma4LZYy7+356BiZKI6uaUnGwAiqO3ppCdj8sB3Afm60tmyivL/EIqnUwmDs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726988226; c=relaxed/simple; bh=fLH2JhS+Mxvs30aCPCSU4p0Fws3QoUZ8WOpiHW4hIy4=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=EaEvE7ioySkkSt73sK1ODhxVc7SJMuDXB0ARIH4+yxzk79/biXEEBQ2LswRUQo5opZk18WeH6r0F1UDePbJG2VMPJrdjC+fcgGmlW54HOmv+Z28iGvqyPHIkPL5ohLphHwWx7tonjtKsyY7991PzGJDauzM9ou9l3xlGV3tLKYU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=xry111.site; spf=pass smtp.mailfrom=xry111.site; dkim=pass (1024-bit key) header.d=xry111.site header.i=@xry111.site header.b=J3WZbU3e; arc=none smtp.client-ip=89.208.246.23 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=xry111.site Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=xry111.site Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=xry111.site header.i=@xry111.site header.b="J3WZbU3e" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=xry111.site; s=default; t=1726988223; bh=fLH2JhS+Mxvs30aCPCSU4p0Fws3QoUZ8WOpiHW4hIy4=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=J3WZbU3eVU2urWWzcaCEkIyCEpkhGR9Yc5OR9kCCyRqu0RrpKGhViJYcUtW5MKxfk 5qLRiZ29ovhLNeIFG3U+JnDBQU0+CfwgX6QWlVOzI0TzU3hWahEv4Kv7yV0XBmoxjZ oMWSdfkmHUnf2j0PHo8hxtB/2XCUCJNhCxcM+c4E= Received: from [IPv6:240e:358:118b:a200:dc73:854d:832e:2] (unknown [IPv6:240e:358:118b:a200:dc73:854d:832e:2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature ECDSA (secp384r1) server-digest SHA384) (Client did not present a certificate) (Authenticated sender: xry111@xry111.site) by xry111.site (Postfix) with ESMTPSA id B8E6E1A3FD6; Sun, 22 Sep 2024 02:57:01 -0400 (EDT) Message-ID: <11368b7c0b7370aea61b3dda73e462fb70f306a7.camel@xry111.site> Subject: Re: [GIT PULL] dma-mapping updates for Linux 6.12 From: Xi Ruoyao To: Christoph Hellwig Cc: Linus Torvalds , linux-kernel@vger.kernel.org, iommu@lists.linux.dev Date: Sun, 22 Sep 2024 14:56:57 +0800 In-Reply-To: References: <971fbb889da38ca4e60f3dedde29ea43e9338d68.camel@xry111.site> <19e4bdbcda78ace200c78c56eb7173097337b921.camel@xry111.site> <9a84a7c6f943209cc87a54075ed22df37ebda5f8.camel@xry111.site> <38bc765eaba8a646a87ce14e1ff06f28d449fcd5.camel@xry111.site> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.54.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Sat, 2024-09-21 at 21:58 -0700, Christoph Hellwig wrote: > 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.=C2=A0 And the behavior see= ms not > > > > deterministic.=C2=A0 I have some transcript of messages I photoed i= n several > > > > boot attempts though: > > >=20 > > > Can you send me the photos of the messages?=C2=A0 Probably best offli= st > > > as the lists don't like attachments. > >=20 > > I've got something better: one attempt to boot > > b5c58b2fdc427e7958412ecb2de2804a1f7c1572 succeeded and I got a dmesg > > containing some Oops traces. > >=20 > > The camera does *not* work.=C2=A0 And when I rebooted the system it hun= g > > (presumably related to these Oops).=20 >=20 > So that oops actually comes from the sounds code and looks unrelated > to DMA.=C2=A0 I suspect that oops is what caused your crashes and thus > messed up the DMA bisection.=C2=A0 Can you try to boot with CONFIG_SND > disabled and see where the bisection for the video issues lands? With SND disabled, b5c58b2fdc427e7958412ecb2de2804a1f7c1572 boots fine (no oops), but the camera does not work.=20 f69e342eec008e1bab772d3963c3dd9979293e13 boots fine and the camera works fine. So the first bad commit is b5c58b2fdc427e7958412ecb2de2804a1f7c1572. --=20 Xi Ruoyao School of Aerospace Science and Technology, Xidian University