github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-02 11:33:28 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

rtlwifi: Fix non-canonical address access issues

Browse Source 
During realtek USB wireless NIC initialization, it's unexpected
disconnection will cause urb sumbmit fail. On the one hand,
_rtl_usb_cleanup_rx will be called to clean up rx stuff, especially for
rtl_wq. On the other hand, disconnection will cause rtl_usb_disconnect
and _rtl_usb_cleanup_rx to be called. So, rtl_wq will be flush/destroy
twice, which will cause non-canonical address 0xdead000000000122 access
and general protection fault.

Fixed this issue by remove _rtl_usb_cleanup_rx when urb sumbmit fail.

Signed-off-by: WeitaoWangoc <WeitaoWang-oc@zhaoxin.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1603768580-2798-1-git-send-email-WeitaoWang-oc@zhaoxin.com
This commit is contained in:
WeitaoWangoc 2020-10-27 11:16:20 +08:00 committed by Kalle Valo
parent d56fd83cf9
commit c521d7e0ff
1 changed files with 0 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/wireless/realtek/rtlwifi/usb.c
View File

@ -731,7 +731,6 @@ static int _rtl_usb_receive(struct ieee80211_hw *hw)
err_out:
usb_kill_anchored_urbs(&rtlusb->rx_submitted);
_rtl_usb_cleanup_rx(hw);
return err;
}