drivers: nrf_wifi: Fix deadlock in display scan and recovery #93377
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When running Zperf traffic + scan in the background eventual we hit a
deadlock:
* sysworkq: recovery->stop_zep->vif_lock->hal_disable->wait lock_rx
* nrf70_bh_wq: event_tasklet->lock_rx->disp_scan_done->
disp_scan_res_get_zep-> waiting on vif_lock
The traffic triggers recovery (another bug) and conflicts with display
scan.
Fix by moving scan results processing to system workqueue instead of
doing it in the FMAC event callback context, this is how supplicant scan
also works.
Signed-off-by: Chaitanya Tata <Chaitanya.Tata@nordicsemi.no>
zephyrbot
requested review from
jukkar,
Kludentwo,
MaochenWang1,
rlubos and
sachinthegreen
|
sachinthegreen
approved these changes
Jul 21, 2025
rlubos
approved these changes
Jul 21, 2025
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When running Zperf traffic + scan in the background eventual we hit a deadlock:
disp_scan_res_get_zep-> waiting on vif_lock
The traffic triggers recovery (another bug) and conflicts with display scan.
Fix by moving scan results processing to system workqueue instead of doing it in the FMAC event callback context, this is how supplicant scan also works.