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[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-fsdevel@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.