From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from nautica.notk.org (nautica.notk.org [91.121.71.147]) (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 F2383BA55 for ; Sat, 27 Jan 2024 01:53:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.121.71.147 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706320432; cv=none; b=ZTdB5QqqH5LZ9JeTLFH7kx4ocTIwJbHqQlIRegupG0iuUEHj7IGKBt7RubtXOuI8xJA0J9sE8e57GCBJEcb1JIQeVrT+yIfnamS6HbeOHeHPGteOB4kTb91BB+fv0FH8Y0uNxu0CiVOqi7KsTnbHZEZX6sdj4iKgzH9jm7qSkzI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706320432; c=relaxed/simple; bh=Y6yN27k74/Y+JOEcNkTKQ6x5QUFGRFBeklM6SZJHkpE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=VM0g3SvBTRAsfbcJcwp3cTUCSq6sXeiZeSNgf9dRkNfykxWQQqRKrS1frh51t564kTLX2OSU5EcmmK/+95cwbq9O+DvKGpER3hs1NcmoZoAymAv+iQwCehv8enM11pWwali3BklPeG4gXZb3N8qRCXPfgu9sUB1Wy6w71pr19Tk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=codewreck.org; spf=pass smtp.mailfrom=codewreck.org; dkim=pass (2048-bit key) header.d=codewreck.org header.i=@codewreck.org header.b=bI7Lipyj; dkim=pass (2048-bit key) header.d=codewreck.org header.i=@codewreck.org header.b=bI7Lipyj; arc=none smtp.client-ip=91.121.71.147 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=codewreck.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=codewreck.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=codewreck.org header.i=@codewreck.org header.b="bI7Lipyj"; dkim=pass (2048-bit key) header.d=codewreck.org header.i=@codewreck.org header.b="bI7Lipyj" Received: by nautica.notk.org (Postfix, from userid 108) id BC8EDC01C; Sat, 27 Jan 2024 02:53:41 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=codewreck.org; s=2; t=1706320421; bh=8ATDnkgivy7+0wg7TR6l159yJcdnVSLc63oTKtEwX6g=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=bI7Lipyjqhxx73YxidLmgkTp/hBb1nQ0vuiRN4ePEwkCwxe50idK0x+/tILSzxkKQ lNC6LgzSJedUnwABd3b4D4HjCYnLgQgN0Q9tA/4WEfTIunXrMSj7U8mxp7fGF8fAEo GxxwiI4P6YY7jTOSXMwCCyz1F7wvTzGzET8cED/QJVdIedHHQwlWi2t6rN/0y4ICp1 rUyf8lsrCmZRxkKbB539SZP6qePcsXjLQXS7lvfq17nD5GR0/fcjXwQ2tW8az4i/+5 V2ZXI0mK1z/GS4XC/iHtRC+WuNCnLW3uX1q+gMBFA/STURusWkm1BJD6U8u6AZSvqJ loZPXxPlfTsVg== X-Spam-Level: Received: from gaia.codewreck.org (localhost [127.0.0.1]) by nautica.notk.org (Postfix) with ESMTPS id E6AE1C009; Sat, 27 Jan 2024 02:53:39 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=codewreck.org; s=2; t=1706320421; bh=8ATDnkgivy7+0wg7TR6l159yJcdnVSLc63oTKtEwX6g=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=bI7Lipyjqhxx73YxidLmgkTp/hBb1nQ0vuiRN4ePEwkCwxe50idK0x+/tILSzxkKQ lNC6LgzSJedUnwABd3b4D4HjCYnLgQgN0Q9tA/4WEfTIunXrMSj7U8mxp7fGF8fAEo GxxwiI4P6YY7jTOSXMwCCyz1F7wvTzGzET8cED/QJVdIedHHQwlWi2t6rN/0y4ICp1 rUyf8lsrCmZRxkKbB539SZP6qePcsXjLQXS7lvfq17nD5GR0/fcjXwQ2tW8az4i/+5 V2ZXI0mK1z/GS4XC/iHtRC+WuNCnLW3uX1q+gMBFA/STURusWkm1BJD6U8u6AZSvqJ loZPXxPlfTsVg== Received: from localhost (gaia.codewreck.org [local]) by gaia.codewreck.org (OpenSMTPD) with ESMTPA id 18b062bd; Sat, 27 Jan 2024 01:53:34 +0000 (UTC) Date: Sat, 27 Jan 2024 10:53:19 +0900 From: Dominique Martinet To: Eric Van Hensbergen Cc: dhowells@redhat.com, v9fs@lists.linux.dev, linux_oss@crudebyte.com Subject: Re: fs/9p: regression in 6.8-rc1 Message-ID: References: Precedence: bulk X-Mailing-List: v9fs@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Eric Van Hensbergen wrote on Fri, Jan 26, 2024 at 02:21:39PM -0600: > I caught a problem in the new netfs code when running in 9p when running > with nocache mode. A regression sweep is turning up a: > [ 1084.438387] netfs: Zero-sized write [R=1b6da] > when running my ldconfig test (included at the end of this) > it reports: > /sbin/ldconfig.real: Writing of cache extension data failed: Input/output error > > I will try to dig into this later today if I have time, but not sure I'll get > to it so I wanted to make other folks aware. I'm not sure how much other > elements of my test harness are contributing to reproducing the problem. The syzbot report (refcount underflow[1]) is also probably related; I'll try to find some time to check a bit more this weekend [1] https://lkml.kernel.org/r/000000000000ee5c6c060fd59890@google.com -- Dominique Martinet | Asmadeus