netdev - [PATCH net v2 0/5] net: fix bugs in device netns-move and rename

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Message-ID: <20231018013817.2391509-1-kuba@kernel.org>
Date: Tue, 17 Oct 2023 18:38:12 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
	edumazet@...gle.com,
	pabeni@...hat.com,
	jiri@...nulli.us,
	przemyslaw.kitszel@...el.com,
	daniel@...earbox.net,
	Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net v2 0/5] net: fix bugs in device netns-move and rename

Daniel reported issues with the uevents generated during netdev
namespace move, if the netdev is getting renamed at the same time.

While the issue that he actually cares about is not fixed here,
there is a bunch of seemingly obvious other bugs in this code.
Fix the purely networking bugs while the discussion around
the uevent fix is still ongoing.

v2:
 - fix the bug in patch 1
 - improvements in patch 5
v1: https://lore.kernel.org/all/20231016201657.1754763-1-kuba@kernel.org/

Link: https://lore.kernel.org/all/20231010121003.x3yi6fihecewjy4e@House.clients.dxld.at/

Jakub Kicinski (5):
  net: fix ifname in netlink ntf during netns move
  net: check for altname conflicts when changing netdev's netns
  net: avoid UAF on deleted altname
  net: move altnames together with the netdevice
  selftests: net: add very basic test for netdev names and namespaces

 net/core/dev.c                            | 65 +++++++++++++----
 net/core/dev.h                            |  3 +
 tools/testing/selftests/net/Makefile      |  1 +
 tools/testing/selftests/net/netns-name.sh | 87 +++++++++++++++++++++++
 4 files changed, 141 insertions(+), 15 deletions(-)
 create mode 100755 tools/testing/selftests/net/netns-name.sh

-- 
2.41.0