RDMA/mlx5: Drain RCU callbacks during module teardown

Browse source

devx_free_subscription() can remain queued after the last DevX event file
drops its module reference or an auxiliary driver detaches its devices.
mlx5_ib can then unload before the callback runs.

Registration error unwind has the same risk because driver registration
can attach existing devices before failing. Wait after all drivers have
stopped.

Fixes: 6898d1c661 ("RDMA/mlx5: Use RCU and direct refcounts to keep memory alive")
Reported-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Closes: https://lore.kernel.org/linux-rdma/20260708092316.Qb39F_B0@linutronix.de/
Link: https://patch.msgid.link/20260709-unload-rcu-v1-2-fccd27211e5a@nvidia.com
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>

...

This commit is contained in:

Leon Romanovsky 2026-07-12 04:37:36 -04:00

parent 7d75592114

commit e37cdd75f8

1 changed files with 2 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

drivers/infiniband/hw/mlx5/main.c

View file