** Changed in: linux-bluefield (Ubuntu Focal)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/2002361
Title:
allow per-net notifier to follow netdev into namespace
Status in linux-bluefield package in Ubuntu:
Invalid
Status in linux-bluefield source package in Focal:
Fix Committed
Bug description:
* Explain the bug(s)
There is possible deadlock during reload mlxsw into initial netns made
possible by commit:
328fbe747ad4 ("net: Close race between {un, }register_netdevice_notifier()
and setup_net()/cleanup_net()").
* Brief explanation of fixes
Introduce dev_net variant that is basically per-net notifier with an
extension that re-registers the per-net notifier upon netdev namespace
change. Basically the per-net notifier follows the netdev into
namespace.
* How to test
# chroot /host nsenter -t 1 -n devlink dev reload ${port} netns ${NS}
* What it could break
none
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