netdev - Re: [PATCH net] wifi: mac80211: fix WARNING in ieee80211_link_info_change

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Thu, 01 Dec 2022 15:14:46 +0100
From:   Johannes Berg <johannes@...solutions.net>
To:     Zhengchao Shao <shaozhengchao@...wei.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com
Cc:     weiyongjun1@...wei.com, yuehaibing@...wei.com
Subject: Re: [PATCH net] wifi: mac80211: fix WARNING in
 ieee80211_link_info_change_notify()

On Fri, 2022-11-04 at 19:08 +0800, Zhengchao Shao wrote:
> 
> The execution process is as follows:
> Thread A:
> ieee80211_open()
>     ieee80211_do_open()
>         drv_add_interface()     //set IEEE80211_SDATA_IN_DRIVER flag
> ...
> cfg80211_shutdown_all_interfaces()
>     ...
>     ieee80211_stop()
>         ieee80211_do_stop()
>             drv_remove_interface() //clear flag
> ...
> nl80211_set_mcast_rate()

How is that possible after the interface is no longer running? That
seems to be the issue? I suppose that should be annotated to not be
allowed?

johannes