From: Martin Kaistra martin.kaistra@linutronix.de
[ Upstream commit 1213acb478a7181cd73eeaf00db430f1e45b1361 ]
The workqueue might still be running, when the driver is stopped. To avoid a use-after-free, call cancel_work_sync() in rtl8xxxu_stop().
Fixes: e542e66b7c2e ("rtl8xxxu: add bluetooth co-existence support for single antenna") Signed-off-by: Martin Kaistra martin.kaistra@linutronix.de Reviewed-by: Ping-Ke Shih pkshih@realtek.com Signed-off-by: Kalle Valo kvalo@kernel.org Link: https://msgid.link/20240111163628.320697-2-martin.kaistra@linutronix.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c index 180907319e8cd..04df0f54aa667 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c @@ -7304,6 +7304,7 @@ static void rtl8xxxu_stop(struct ieee80211_hw *hw) if (priv->usb_interrupts) rtl8xxxu_write32(priv, REG_USB_HIMR, 0);
+ cancel_work_sync(&priv->c2hcmd_work); cancel_delayed_work_sync(&priv->ra_watchdog);
rtl8xxxu_free_rx_resources(priv);