wifi: rtw88: usb: kill and free rx urbs on probe failure

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commit 290564367a upstream.

After rtw_usb_alloc_rx_bufs() has been called rx urbs have been
allocated and must be freed in the error path. After rtw_usb_init_rx()
has been called they are submitted, so they also must be killed.

Add these forgotten steps to the probe error path.

Besides the lost memory this also fixes a problem when the driver
fails to download the firmware in rtw_chip_info_setup(). In this
case it can happen that the completion of the rx urbs handler runs
at a time when we already freed our data structures resulting in
a kernel crash.

Fixes: a82dfd33d1 ("wifi: rtw88: Add common USB chip support")
Cc: stable@vger.kernel.org
Reported-by: Ilgaz Öcal <ilgaz@ilgaz.gen.tr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230823075021.588596-1-s.hauer@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Sascha Hauer 2023-08-23 09:50:21 +02:00 • committed by Greg Kroah-Hartman

parent e74778e91f

commit c32e118deb

1 changed files with 4 additions and 1 deletions

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drivers/net/wireless/realtek/rtw88/usb.c

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