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Kuniyuki Iwashima says:
====================
net: Fix race of rtnl_net_lock(dev_net(dev)).
Yael Chemla reported that commit 7fb1073300 ("net: Hold rtnl_net_lock()
in (un)?register_netdevice_notifier_dev_net().") started to trigger KASAN's
use-after-free splat.
The problem is that dev_net(dev) fetched before rtnl_net_lock() might be
different after rtnl_net_lock().
The patch 2 fixes the issue by checking dev_net(dev) after rtnl_net_lock(),
and the patch 3 fixes the same potential issue that would emerge once RTNL
is removed.
v4: https://lore.kernel.org/20250212064206.18159-1-kuniyu@amazon.com
v3: https://lore.kernel.org/20250211051217.12613-1-kuniyu@amazon.com
v2: https://lore.kernel.org/20250207044251.65421-1-kuniyu@amazon.com
v1: https://lore.kernel.org/20250130232435.43622-1-kuniyu@amazon.com
====================
Link: https://patch.msgid.link/20250217191129.19967-1-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linux kernel
============
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