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authorDuoming Zhou <duoming@zju.edu.cn>2022-10-18 16:34:24 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-11-09 14:38:19 +0100
commitce8cc75c7419ad54cb99437543a54c97c7446db5 (patch)
treeba5ace7d8c7d1e9a4861ee2f86e2667ea72ab49e /tools/perf/scripts/python/stackcollapse.py
parenta614e753e8e7f3322b560dcf6eaf44468ec22b3a (diff)
drivers: staging: r8188eu: Fix sleep-in-atomic-context bug in rtw_join_timeout_handler
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>
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