From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 B572E30DD2A; Wed, 27 May 2026 08:50:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779871852; cv=none; b=CPfOeJSvDV3rHO2SG9r/YkT6jjBoVHV8VsrRrPil+epLvsgQnJRAFSJkEfcwWNArudBbZgGE5UtAAByspoS9chQyto/olof+me29//mBNBaz/iJUC9U/Y65JQIoGo4rDbZkX8azsqnS4C51fIvcmopCjNObdYSucNVkky+B2OhA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779871852; c=relaxed/simple; bh=Pos1LKDGnxjII6zvTEyXjuDDOkcVRQtqhKZywYNQGSo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=TNJ/uGIS/OYubOFJ++o7mA2ZI4c/KAePvpFIgS5y9g40wz3wr7nNbRZ1PKP2aS+8IELkmldALwltmyIb0FLiCjaYmaQoRF4O3KGhVWViryHXHkAhNMo0ix8Uy665s/Z/1i2XWqyGkn+n3RBq4Ipmh5C9JxX7IxvMjJ5Pdi1ZRAY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=K+Lei1i2; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="K+Lei1i2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8ABA61F000E9; Wed, 27 May 2026 08:50:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1779871851; bh=wP+eaBcEtoPp/7xKAXoJ6JjcJom+Mzp3XCjO/gK0Apo=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=K+Lei1i2RUOAYTYZkiOXopxCLHTDTPRpVpJstm6pInlnJQ9qHLOOfWasbnBLkZMM4 vXrvnSHqTkxkPy32XlFCSWRCO+yFrXKUrdY4aMgE9d85RXMYr3h2xH3T4VcqEIKQUO gQ/YspVihJ62O1jZUNYdLwkGVyeyuVL/8FBWqxI8= Date: Wed, 27 May 2026 10:49:58 +0200 From: Greg Kroah-Hartman To: Miklos Szeredi Cc: Calum Mackay , Christian Brauner , linux-fsdevel@vger.kernel.org, Miklos Szeredi , linux-mm@kvack.org, Linux NFS Mailing List , Chuck Lever Subject: Re: [PATCH 1/3] tmpfs: simplify constructing "security.foo" xattr names Message-ID: <2026052722-garlic-worry-03b2@gregkh> References: <177945382308.2991556.1256192774754909984.b4-ty@b4> <5386153f-9112-4971-98fc-de90d7aae2c6@oracle.com> Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Tue, May 26, 2026 at 10:46:12AM +0200, Miklos Szeredi wrote: > [Cc: Greg KH] > > On Mon, 25 May 2026 at 05:59, Calum Mackay wrote: > > > > hi Christian, Miklos, > > > > https://lore.kernel.org/all/177945382308.2991556.1256192774754909984.b4-ty@b4/ > > > > > Date: Fri, 22 May 2026 14:43:43 +0200> On Tue, 19 May 2026 10:13:21 +0200, Miklos Szeredi wrote: > > >> tmpfs: simplify constructing "security.foo" xattr names > > > > > > Thanks, this looks great! > > > > > > --- > > > > > > Applied to the vfs-7.2.misc branch of the vfs/vfs.git tree. > > > Patches in the vfs-7.2.misc branch should appear in linux-next soon. > > > > > > Please report any outstanding bugs that were missed during review in a > > > new review to the original patch series allowing us to drop it. > > > > > > It's encouraged to provide Acked-bys and Reviewed-bys even though the > > > patch has now been applied. If possible patch trailers will be updated. > > > > > > Note that commit hashes shown below are subject to change due to rebase, > > > trailer updates or similar. If in doubt, please check the listed branch. > > > > > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git > > > branch: vfs-7.2.misc > > > > > > [1/3] tmpfs: simplify constructing "security.foo" xattr names > > > https://git.kernel.org/vfs/vfs/c/aba5853b137b > > > [2/3] simple_xattr: change interface to pass struct simple_xattrs ** > > > https://git.kernel.org/vfs/vfs/c/1cd9d2387c05 > > > [3/3] simpe_xattr: use per-sb cache > > > https://git.kernel.org/vfs/vfs/c/12e9e3cd03b5 > > > > > > I have been doing some testing of Chuck's nfsd-testing tree, which > > includes some vfs changes. > > > > The test systems are reliably crashing, in what looks like it might > > possibly be something related to these three patches. > > Calum, thanks for the report. > > Relevant part of call trace is: > > kernfs_new_node > __kernfs_new_node > security_kernfs_init_security > selinux_kernfs_init_security > kernfs_xattr_set > kernfs_root > > Since __parent is assigned after security_kernfs_init_security() gets > called, kernfs_root() will return NULL. > > Greg, any idea about dealing with this? Don't call this so early? :) I really don't know, sorry. greg k-h