linux-kernel - Re: [PATCH AUTOSEL 5.10] umount: Allow superblock owners to force umount

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Message-ID: <20250420-sticken-seehund-9614ddbcad43@brauner>
Date: Sun, 20 Apr 2025 12:53:14 +0200
From: Christian Brauner <brauner@...nel.org>
To: Pavel Machek <pavel@....cz>
Cc: Sasha Levin <sashal@...nel.org>, linux-kernel@...r.kernel.org, 
	stable@...r.kernel.org, Trond Myklebust <trond.myklebust@...merspace.com>, 
	"Eric W. Biederman" <ebiederm@...ssion.com>, viro@...iv.linux.org.uk, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 5.10] umount: Allow superblock owners to force
 umount

On Fri, Apr 18, 2025 at 06:51:38PM +0200, Pavel Machek wrote:
> Hi!
> 
> > From: Trond Myklebust <trond.myklebust@...merspace.com>
> > 
> > [ Upstream commit e1ff7aa34dec7e650159fd7ca8ec6af7cc428d9f ]
> > 
> > Loosen the permission check on forced umount to allow users holding
> > CAP_SYS_ADMIN privileges in namespaces that are privileged with respect
> > to the userns that originally mounted the filesystem.
> 
> Should we be tweaking permissions in -stable?

Seems fine to me if you'd backport it.