From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f173.google.com (mail-pf1-f173.google.com [209.85.210.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D4D435013A3 for ; Tue, 8 Sep 2026 23:20:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788909656; cv=none; b=TgsbRkdbuibAdJkgwsjEBlHCwMPFbXD2efYQD3mSbHojHCmPeFvgpa+hAFyqecAx5ep3ESe+/DPe3utbMCq+3rIqHSvoOsAYJmIb3zORYAvelaH3NzN1/FVZQNlrdNU2zLvQSzJmlZjEXsrAU8D+BItXPsq456p8BvNtxbZ8XZ8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788909656; c=relaxed/simple; bh=Wecw+9QrgZirVokurAeBUMi9T03tj337LxegaPg13iw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=EY8KJc3ajWHMtQLJ84YjgvqPShEIRXaLu02ZkS7sPTXRPDTiUb9pSDbW6uGqRctjWGU+T/fmCVFPXZBqmI19GrI6NMWFf03bvF0YCRHxMvkIvRF2PzMhAKsamZCcaQrI4Ffi6x/C1p2pn4+IpdKZEa/9XiysCPnLyrcx5iQl4kU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=bobrowski.net; spf=pass smtp.mailfrom=bobrowski.net; dkim=pass (2048-bit key) header.d=bobrowski.net header.i=@bobrowski.net header.b=ERKapIL0; arc=none smtp.client-ip=209.85.210.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=bobrowski.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bobrowski.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bobrowski.net header.i=@bobrowski.net header.b="ERKapIL0" Received: by mail-pf1-f173.google.com with SMTP id d2e1a72fcca58-85339ed040aso4328396b3a.1 for ; Tue, 08 Sep 2026 16:20:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bobrowski.net; s=google; t=1788909654; x=1789514454; darn=vger.kernel.org; h=in-reply-to:content-transfer-encoding:content-disposition :content-type:mime-version:references:message-id:subject:cc:to:from :date:from:to:cc:subject:date:message-id:reply-to:content-type; bh=ME4T4I0fml2p5iiDAE13UqY89i33BgyIDriKnzcytM8=; b=ERKapIL0I28esERqml8fFrJdJFDB/nRClYalESgMt9eMxlQFdIKaythiKGZOo0AxHc 4awbjlOGQhxUsbTzIdsfAd8wQRyViykaxFwC16/aPY4F66ESH+1dYFW48QMFztLkHNrq UFl2m+/TEcTmFPZPMHhtAZ0/gtteiIgK9VWaVlb8Jqh4EloZzomrkde7LyC2eIbylJ1l OxoTiLLUyi25YDSZIvj2lBh+T5ckyPWX5AZe95DysSvQDSJduE+MK8FOSkAjwlwohxrs 0JjvR0hVjWcktRrmHdQI8FxnwoeGTzjwLsEzSXn8whW9664CFCR6/hq+qFxUggkzCMbe N7UQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788909654; x=1789514454; h=in-reply-to:content-transfer-encoding:content-disposition :content-type:mime-version:references:message-id:subject:cc:to:from :date:x-gm-gg:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to:content-type; bh=ME4T4I0fml2p5iiDAE13UqY89i33BgyIDriKnzcytM8=; b=G/jzMihaGSDvg4/vudG4c7RTNvKJsYy6BLhLyDcwCL+Pn6KYvwYWegU1cbv9XKGBlo 7lbI2KqN8OmQnzgum6zJhKEgi44NP27h3jeSyEYbwAG3lUXAYYipjR4vw7uiAl9+/DoU hgXx/KoDJT1amEVBdxzmMJWmNimpYSDbUO3hY770way6yivxDJbCpvukD+IVAdMLwBY8 rEzUFGPYc/nLwM4RHips2iLUApYAwXrfs9CWXCHcgTLyehf09PA7+qNRHf6Jd6P1/oYf YGDb1jJhD4IzEjVIpcI0CWjDxPfbrNinRn1Au9MXLRnngJCN6VG9Tx4+qbAozGiJVas2 JGqg== X-Forwarded-Encrypted: i=1; AKwUvBxd1E+pGns5f2MQeQQgTpnnyIXC3iEnLkvE4vpdH/Rd80t/re+/m/QEa6G/elCitzaroMwlfWsVrUUX05JS7UGXFTjPgS4=@vger.kernel.org X-Gm-Message-State: AFuF++nKsNRDDNldSnFDi5f1+YCCjXAB6Vd38yz7QTgnTzlzdllp98TF B0C/05CXbbOQxNtb09oDw6jFnyrB04FxBUg8KtKrLIrsQwoyq7Le+3CKAkXQwN6dA0MP X-Gm-Gg: AYBFou2nEpxx+v+IBnbjDEx/9aiGjw+xKxsafoHcviTmxqPYcjcGB5dz1vIJUTFy6X5 Y0JUy8GsUR81tBPE2+rp9YFdOkgCcyCUCzOUe94VeaUC1qAAIyULduWFvdS5jQ8/KovsU/PcmNJ 0SVKRn8+X3CGmveckpVT40FSK9mtfiHYkDlHi/V4Cv61iLol6E7PQldAo4is6NMvBUEy2Smj0jy CcGtlKBYmpfGKPPckIb4l0WVNQwygN4oKyeoa2Acbqx0QLRgEXGfF1mkBW/joDFfzLtHx1CEsly vDmrsrkFHfJjHrexNZFlkT3aK/C+E4rHu2brsbOgGaU32Uaqvg5Bt9nDRSKAZIqWXgMqNYRnOb1 zCSBru9Z8D3MJyxxcds8QeJDeTgH8mkIOKvLYXe1Eb/DNwt5rtor+rYFwsqqj55HDJt7DtlnsmD Mo7zzVR/029zglP6/GQ26Tvp2i+bc7BGLQvVZRxhERrDaW2oyJuZ/B02GYy7jBS8JRg67uyA7xm TAOo2TYQn5KSyRnmz5Yezm6c+bTDkwQXSr2+FHRuKpDo8TgyOY= X-Received: by 2002:a17:90b:2c88:b0:398:ba56:b926 with SMTP id 98e67ed59e1d1-39b262e28c2mr51899372a91.25.1788909653985; Tue, 08 Sep 2026 16:20:53 -0700 (PDT) Received: from lima-development (163-53-146-23.ip4.superloop.au. [163.53.146.23]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3397c13dfb1sm1890239eec.2.2026.09.08.16.20.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Sep 2026 16:20:53 -0700 (PDT) Date: Wed, 9 Sep 2026 09:20:46 +1000 From: Matt Bobrowski To: Paul Moore Cc: daan@amutable.com, KP Singh , Christian Brauner , Jan Kara , Alexander Viro , linux-fsdevel@vger.kernel.org, linux-security-module@vger.kernel.org Subject: Re: [PATCH v3 2/2] selftests/bpf: verify mount idmaps reach inode hooks Message-ID: References: <20260904-lsm-mount-idmaps-v3-0-920a1963675d@amutable.com> <20260904-lsm-mount-idmaps-v3-2-920a1963675d@amutable.com> Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Tue, Sep 08, 2026 at 06:22:31PM -0400, Paul Moore wrote: > On Fri, Sep 4, 2026 at 10:48 AM Daan De Meyer via B4 Relay > wrote: > > > > From: Daan De Meyer > > > > Extend the BPF LSM selftest to exercise create, link, symlink, mkdir, > > mknod, and permission through both the VFS identity idmap and a real > > idmapped tmpfs mount. > > > > Record the idmap observed by each hook and verify that every updated hook > > receives the mapping used by the VFS operation. This provides regression > > coverage for passing mount idmaps through inode security hooks. > > > > Signed-off-by: Daan De Meyer > > --- > > tools/testing/selftests/bpf/prog_tests/test_lsm.c | 231 ++++++++++++++++++++++ > > tools/testing/selftests/bpf/progs/lsm.c | 79 ++++++++ > > 2 files changed, 310 insertions(+) > > Do any of the BPF LSM folks want to review/ACK this patch from Daan? Sure, will take a look this evening.