fjes: unregister the netdev before destroying the workqueues

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fjes_remove() destroys the driver workqueues before unregistering the
netdev. The interrupt handler queues work on them, but the IRQ is only
freed from fjes_close() under unregister_netdev(), so an interrupt in that
window can queue work once the workqueues are gone.

Unregister the netdev first so fjes_close() frees the IRQ and cancels the
workers before the workqueues are destroyed. force_close_task, which the
workers arm on the system workqueue, is handled in the next patch.

This issue was found by an in-house static analysis tool.

Cc: stable+noautosel@kernel.org # untested fix to a driver init path race
Signed-off-by: Fan Wu <fanwu01@zju.edu.cn>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260805011410.414431-1-fanwu01@zju.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Fan Wu 2026-08-05 01:14:09 +00:00 • committed by Jakub Kicinski

parent b5b02ce657

commit f2473fbfc3

1 changed files with 3 additions and 6 deletions

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drivers/net/fjes/fjes_main.c

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