The rtw_join_timeout_handler() is a timer handler that
runs in atomic context, but it could call msleep().
As a result, the sleep-in-atomic-context bug will happen.
The process is shown below:
(atomic context)
rtw_join_timeout_handler
_rtw_join_timeout_handler
rtw_do_join
rtw_select_and_join_from_scanned_queue
rtw_indicate_disconnect
rtw_lps_ctrl_wk_cmd
lps_ctrl_wk_hdl
LPS_Leave
LPS_RF_ON_check
msleep //sleep in atomic context
Fix by removing msleep() and replacing with mdelay().
Fixes:
15865124feed ("staging: r8188eu: introduce new core dir for RTL8188eu driver")
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Link: https://lore.kernel.org/r/20221018083424.79741-1-duoming@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
err = -1;
break;
}
- msleep(1);
+ mdelay(1);
}
return err;