From: Gustavo Luiz Duarte <gustavold@gmail.com>
To: "Breno Leitao" <leitao@debian.org>,
"Andrew Lunn" <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"Paolo Abeni" <pabeni@redhat.com>,
"Matt Mackall" <mpm@selenic.com>,
"Bruno Prémont" <bonbons@linux-vserver.org>,
"Stephen Hemminger" <stephen@networkplumber.org>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Gustavo Luiz Duarte <gustavold@gmail.com>,
Sashiko <netdev-bot+sashiko@kernel.org>
Subject: [PATCH net-next 0/4] netconsole: fix target enable race and configfs read locking
Date: Mon, 28 Sep 2026 19:00:02 +0100 [thread overview]
Message-ID: <20260928-netcons-fixes-v1-0-bb5ffe5e698a@gmail.com> (raw)
While looking into the sashiko report about local_ip_show() and
remote_ip_show() missing proper locking [1] (fixed in patch 3/4), I
noticed a couple other places that need locking: patch 1/4 fixes a
null-ptr-deref when enabling a target races against a NETDEV_UNREGISTER
event, and patch 2/4 fixes a use-after-free when the local_mac_show()
callback races against a NETDEV_UNREGISTER event. Patch 4/4 is mostly
cosmetic but worth fixing.
[1] https://netdev-ai.bots.linux.dev/sashiko/#/patchset/20260814-netcons_ipv6-v3-7-bc0915e8c75f@gmail.com
Signed-off-by: Gustavo Luiz Duarte <gustavold@gmail.com>
---
Gustavo Luiz Duarte (4):
netconsole: finish enabling the target before releasing RTNL
netconsole: read np.dev under the RTNL in local_mac_show()
netconsole: avoid printing partially updated target attributes
netconsole: remove unnecessary target refcounting from the netdev notifier
drivers/net/netconsole.c | 110 ++++++++++++++++++++++++++---------------------
1 file changed, 60 insertions(+), 50 deletions(-)
---
base-commit: 014d795c73837ea2339a4ea8e8f82c6e959b845d
change-id: 20260925-netcons-fixes-93a3e14326b5
Best regards,
--
Gustavo Luiz Duarte <gustavold@gmail.com>
next reply other threads:[~2026-09-28 18:01 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-28 18:00 Gustavo Luiz Duarte [this message]
2026-09-28 18:00 ` [PATCH net-next 1/4] netconsole: finish enabling the target before releasing RTNL Gustavo Luiz Duarte
2026-10-01 15:03 ` Breno Leitao
2026-10-05 11:36 ` Gustavo Luiz Duarte
2026-09-28 18:00 ` [PATCH net-next 2/4] netconsole: read np.dev under the RTNL in local_mac_show() Gustavo Luiz Duarte
2026-09-28 18:00 ` [PATCH net-next 3/4] netconsole: avoid printing partially updated target attributes Gustavo Luiz Duarte
2026-10-01 9:00 ` netdev-bot+sashiko
2026-10-05 11:46 ` Gustavo Luiz Duarte
2026-09-28 18:00 ` [PATCH net-next 4/4] netconsole: remove unnecessary target refcounting from the netdev notifier Gustavo Luiz Duarte
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