iavf: initialize waitqueues before starting watchdog_task

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[ Upstream commit 7db3111043 ]

It is not safe to initialize the waitqueues after queueing the
watchdog_task. It will be using them.

The chance of this causing a real problem is very small, because
there will be some sleeping before any of the waitqueues get used.
I got a crash only after inserting an artificial sleep in iavf_probe.

Queue the watchdog_task as the last step in iavf_probe. Add a comment to
prevent repeating the mistake.

Fixes: fe2647ab0c ("i40evf: prevent VF close returning before state transitions to DOWN")
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Michal Schmidt 2023-10-19 09:13:46 +02:00 • committed by Greg Kroah-Hartman

parent 66e879507b

commit d8ac13acfb

1 changed files with 3 additions and 2 deletions

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drivers/net/ethernet/intel/iavf/iavf_main.c

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