4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Amitkumar Karwar <akarwar@xxxxxxxxxxx> [ Upstream commit 74c8719b8ee0922593a5cbec0bd6127d86d8a2f4 ] If we have sdio work requests received when sdio card reset is happening, we may end up accessing older save_adapter pointer later which is already freed during card reset. This patch solves the problem by cancelling those pending requests. Signed-off-by: Amitkumar Karwar <akarwar@xxxxxxxxxxx> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/wireless/marvell/mwifiex/sdio.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -2296,6 +2296,12 @@ static void mwifiex_recreate_adapter(str mmc_hw_reset(func->card->host); sdio_release_host(func); + /* Previous save_adapter won't be valid after this. We will cancel + * pending work requests. + */ + clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags); + clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags); + mwifiex_sdio_probe(func, device_id); }