** Changed in: linux (Ubuntu)
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1769671
Title:
[Xenial] Kernels OOPS when mwifiex is in AP mode
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Xenial:
Fix Released
Bug description:
There's quite a chance to find kernel oops when mwifiex is in AP mode.
Previously two workaround commits were added in the Xenial kernel,
8a034f97a28dba62026343eef7992766c91273a7 and
f21d12781c88413aec7ee44983f05b1cdf90662f, to mitigate this issue. The
original report can be found at
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1712746 .
Now that a fix has been merged in mainline, it's time to revert the
workaround and apply the fix:
commit c61cfe49f0f0f0d1f8b56d0b045838d597e8c3a3
Author: Limin Zhu <limin...@marvell.com>
Date: Thu Nov 30 14:22:34 2017 +0800
mwifiex: cfg80211: do not change virtual interface during scan processing
(1) Change virtual interface operation in cfg80211 process reset and
reinitilize private data structure.
(2) Scan result event processed in main process will dereference private
data structure concurrently, ocassionly crash the kernel.
The cornel case could be trigger by below steps:
(1) wpa_cli mlan0 scan
(2) ./hostapd mlan0.conf
Cfg80211 asynchronous scan procedure is not all the time operated
under rtnl lock, here we add the protect to serialize the cfg80211
scan and change_virtual interface operation.
Signed-off-by: Limin Zhu <limin...@marvell.com>
Signed-off-by: Xinming Hu <h...@marvell.com>
Signed-off-by: Kalle Valo <kv...@codeaurora.org>
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