mac80211: fix issue with possible txq NULL pointer

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Drivers that do not have the BUFF_MMPDU_TXQ flag set will not have a
TXQ for the special TID = 16.

In this case, the last member in the *struct ieee80211_sta* txq array
will be NULL.

We must check this in order not to get a NULL pointer dereference when
iterating the txq array.

Signed-off-by: Erik Stromdahl <erik.stromdahl@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

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Erik Stromdahl 2018-09-14 18:00:34 +02:00 • committed by Johannes Berg

parent 6762696429

commit a5ae326418

1 changed files with 3 additions and 0 deletions

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net/mac80211/util.c

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