openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

mwifiex: sdio: fix use after free issue for save_adapter 

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@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Amitkumar Karwar 2016-12-01 19:23:31 +05:30 committed by Kalle Valo
parent d15697de60
commit 74c8719b8e
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/wireless/marvell/mwifiex/sdio.c
View File

@ -2237,6 +2237,12 @@ static void mwifiex_recreate_adapter(struct sdio_mmc_card *card)
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);
}