From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) (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 F0286147C90 for ; Fri, 12 Apr 2024 15:44:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=18.9.28.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712936656; cv=none; b=C4N3b0U+diqSfUqfy86gMu7M+brodPlGN7C0PF8NvrnkuBhxf+dNtOEmJHqIDde9TkUrfCqgYETG39fUwrT9I4d0x9+G3RnQQBpIasi1SDDlWDBmtw2hoIJQ6rMRzBzev41gdbfOmGY6xvV+ZeH5QtoGaWBG0QDRIPgLiT/o/DE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712936656; c=relaxed/simple; bh=eyKgQBpnmdVjpqa3281J5u2QDz7Bvs3RTzDI2S5yZQA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ICZrlLdAWhRRMIA45hEPTQqqOpGrBwErYwhfuFnaFZBoQEswRahuc20oEcb4VnUjm5E6VdFjjrWnEaREznkb+cpst3AccEAmlEyoKWrbIrdrDb/SvL2DNMZWxXNCX4FHlkhEn6jmpAsaC6eI+kGxNtYQwmYZf/reBpT1RuVuC20= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=mit.edu; spf=pass smtp.mailfrom=mit.edu; dkim=pass (2048-bit key) header.d=mit.edu header.i=@mit.edu header.b=fBcd5A1G; arc=none smtp.client-ip=18.9.28.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=mit.edu Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mit.edu Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mit.edu header.i=@mit.edu header.b="fBcd5A1G" Received: from cwcc.thunk.org (pool-173-48-113-2.bstnma.fios.verizon.net [173.48.113.2]) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 43CFhg9b021405 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 12 Apr 2024 11:43:43 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mit.edu; s=outgoing; t=1712936626; bh=hNR9hJ5imm7pvcdn12hJQLsjPCdfcIBeTF5ThDzB0+I=; h=Date:From:Subject:Message-ID:MIME-Version:Content-Type; b=fBcd5A1Gip2tvL3Hz8hd/OCcm4kh0QbVReEEeSxMB6gN7sXjwlbNkLLOsJICUoTjf n78kpNa42Efu5x5posRsHr3q3XsjA7UJBxmtGbm98Hm17gLYmVo6FmWcfWZOnz/9Vg n8oLYZ5FC0jaFQy8+ve4Vx0ua+k08ctd5jwXwCeVVzJWter0l+8FW9e+C8Td99ZpGi wGM0TpyYXT3dFiJ9NXgSemr/U+cfBA/t2GJ5Fy5+MC/AnlpxdZvRb0auFAL550oGec hFuGDfTviPwo/nUQnGw3aIiBxP2X6xP2R3NIe1GomQi+qSRtPmDfKRMScryidg4KAu iVCG5vGDFz0ww== Received: by cwcc.thunk.org (Postfix, from userid 15806) id 4A4FD15C00DE; Fri, 12 Apr 2024 11:43:42 -0400 (EDT) Date: Fri, 12 Apr 2024 11:43:42 -0400 From: "Theodore Ts'o" To: =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= Cc: linux-fsdevel@vger.kernel.org, Alexander Viro , Christian Brauner , Jan Kara , linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Andreas Dilger , linux-ext4@vger.kernel.org, Conor Dooley Subject: Re: riscv32 EXT4 splat, 6.8 regression? Message-ID: <20240412154342.GA1310856@mit.edu> References: <878r1ibpdn.fsf@all.your.base.are.belong.to.us> Precedence: bulk X-Mailing-List: linux-fsdevel@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: <878r1ibpdn.fsf@all.your.base.are.belong.to.us> On Fri, Apr 12, 2024 at 04:57:08PM +0200, Björn Töpel wrote: > Hi! > > I've been looking at an EXT4 splat on riscv32, that LKFT found [1]: I'm getting a "page not found" for [1]? > This was not present in 6.7. Bisection wasn't really helpful (to me at > least); I got it down to commit c604110e662a ("Merge tag 'vfs-6.8.misc' > of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs"), and when I > revert the commits in the vfs merge the splat went away, but I *really* > struggle to see how those are related... It sounds like you have a reliable repro; is it something that can be streamlined into a simple test program? If so, is it something that can be reproduced on other architectures? And could you make it available? Thanks, - Ted