From: Jakub Kicinski <kuba@kernel.org>
To: Bobby Eshleman <bobbyeshleman@gmail.com>
Cc: Donald Hunter <donald.hunter@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>, Simon Horman <horms@kernel.org>,
Andrew Lunn <andrew+netdev@lunn.ch>,
Shuah Khan <shuah@kernel.org>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-kselftest@vger.kernel.org,
Stanislav Fomichev <sdf@fomichev.me>,
Mina Almasry <almasrymina@google.com>,
Bobby Eshleman <bobbyeshleman@meta.com>
Subject: Re: [PATCH net-next 2/2] selftests: drv-net: add userns devmem RX test
Date: Mon, 1 Jun 2026 16:36:49 -0700 [thread overview]
Message-ID: <20260601163649.50510141@kernel.org> (raw)
In-Reply-To: <20260601-nl-prov-v1-2-9bc57d6ca3f3@meta.com>
On Mon, 01 Jun 2026 12:24:28 -0700 Bobby Eshleman wrote:
> From: Bobby Eshleman <bobbyeshleman@meta.com>
>
> Add userns_devmem.py, which mirrors nk_devmem.py but places the netkit
> guest in a netns whose owning user_ns is non-init. ncdevmem is ran there
> via nsenter so the bind-rx call is issued with creds that hold
> CAP_NET_ADMIN only in the child user_ns.
>
> Without the preceding GENL_UNS_ADMIN_PERM patch the test fails at
> bind-rx with EPERM, but with the patch the transfer completes and tests
> pass.
# Traceback (most recent call last):
# File "/srv/vmksft/testing/wt-17/tools/testing/selftests/drivers/net/./hds.py", line 8, in <module>
# from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_raises, KsftSkipEx
# File "/srv/vmksft/testing/wt-17/tools/testing/selftests/drivers/net/lib/py/__init__.py", line 50, in <module>
# from .env import NetDrvEnv, NetDrvEpEnv, NetDrvContEnv
# File "/srv/vmksft/testing/wt-17/tools/testing/selftests/drivers/net/lib/py/env.py", line 12, in <module>
# from lib.py import NetNS, NetdevSimDev, UserNetNS
# ImportError: cannot import name 'UserNetNS' from partially initialized module 'lib.py' (most likely due to a circular import) (/srv/vmksft/testing/wt-17/tools/testing/selftests/drivers/net/lib/py/__init__.py)
prev parent reply other threads:[~2026-06-01 23:36 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-01 19:24 [PATCH net-next 0/2] net: devmem: allow bind-rx from non-init user namespaces Bobby Eshleman
2026-06-01 19:24 ` [PATCH net-next 1/2] " Bobby Eshleman
2026-06-01 19:24 ` [PATCH net-next 2/2] selftests: drv-net: add userns devmem RX test Bobby Eshleman
2026-06-01 23:36 ` Jakub Kicinski [this message]
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