mt76: fix race condition in station removal

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If there are still pending packets in the tx queue when removing a station,
it could possibly lead to a call to further attempts to pull packets from
the mac80211 tx queue after it has already been removed from the scheduling
list.
Prevent this from happening by calling synchronize_rcu after deleting the
wcid pointer before further cleaning up the tx queues.
To be extra careful, ensure that mtxq->list is always initialized properly.

Signed-off-by: Felix Fietkau <nbd@nbd.name>

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This commit is contained in:

Felix Fietkau 2018-11-13 11:25:47 +01:00

parent 13c6d5f837

commit c2a1a5e136

2 changed files with 4 additions and 2 deletions

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4

drivers/net/wireless/mediatek/mt76/mt76x02_util.c

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2

drivers/net/wireless/mediatek/mt76/tx.c

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