From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from jabberwock.ucw.cz (jabberwock.ucw.cz [46.255.230.98]) (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 A5AED1A8F68; Fri, 18 Apr 2025 16:57:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=46.255.230.98 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744995460; cv=none; b=ueQUV6z3+av6EqYl3iSYS1LrooE7AR+uR46csU3qsng4Z7qsVCPzwAfz+hj6j4EWrLWa2G7FBAgv+NUlF7TwwqKWeATPLcz0d5bhxkRaS4XYImADFHFQhq8nPTpt88b1ezSMX0sNJaOez3H+LtSFeDFmaNTQfWnNvdlH8cQ3tzM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744995460; c=relaxed/simple; bh=oMUnQpA3i8Z6l1WvnRE2YkrR/PCt4Rv+k/8Npl7LEHI=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Soys9FCxodHoYuAOeYXe7BhRMqnOP20bQY3TwPPoDQFNcBRmyuzHW4sTCuEcqOd84duLKaq6FhU/VlvQshVZN+LbNqZ6pLSBUzewBB0pqHW2ZIuTCvbmj/uL7jWAkl3ekbDsIgTDooUcBQVJNeKdAscIOkRhOHpvglXNTeZWHZA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ucw.cz; spf=pass smtp.mailfrom=ucw.cz; dkim=pass (1024-bit key) header.d=ucw.cz header.i=@ucw.cz header.b=cIVL3/qM; arc=none smtp.client-ip=46.255.230.98 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ucw.cz Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ucw.cz Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ucw.cz header.i=@ucw.cz header.b="cIVL3/qM" Received: by jabberwock.ucw.cz (Postfix, from userid 1017) id A40091C00B2; Fri, 18 Apr 2025 18:51:38 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ucw.cz; s=gen1; t=1744995098; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=PSbe1n/k0ulYtGbIXI96CO1VrCv/UaM1rOskyi49O2s=; b=cIVL3/qMttdCGnkI3NL7gUW1Aii+xIXKQlu+Jek5MvBLY6ydcrFrlqT4Ue5CCsoac2cCnB iHtXGV20tgwSl5izXQJp+I4Ti6t+1MlUjbiBbAd5F+pfSwQ9osFGUkhwKEjmxk/imNvPg4 Xel9S8KHEQU4/S5N/eYEo/2ihftbRpQ= Date: Fri, 18 Apr 2025 18:51:38 +0200 From: Pavel Machek To: Sasha Levin Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org, Trond Myklebust , "Eric W. Biederman" , Christian Brauner , viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org Subject: Re: [PATCH AUTOSEL 5.10] umount: Allow superblock owners to force umount Message-ID: References: <20250331143234.1667913-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="hXfHA1BSXmrE6BXK" Content-Disposition: inline In-Reply-To: <20250331143234.1667913-1-sashal@kernel.org> --hXfHA1BSXmrE6BXK Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > From: Trond Myklebust >=20 > [ Upstream commit e1ff7aa34dec7e650159fd7ca8ec6af7cc428d9f ] >=20 > 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? Best regards, Pavel --=20 I don't work for Nazis and criminals, and neither should you. Boycott Putin, Trump, and Musk! --hXfHA1BSXmrE6BXK Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EABECAB0WIQRPfPO7r0eAhk010v0w5/Bqldv68gUCaAKDGgAKCRAw5/Bqldv6 8hXYAJ0VzMdgdBf7hf3v5zp6JfimQyBy2QCdGT8OJNHhSAJADySZcsjEl500YVc= =DNza -----END PGP SIGNATURE----- --hXfHA1BSXmrE6BXK--