Re: [PATCH] wifi: cfg80211: Fix an error handling path in cfg80211_wext_siwscan()

[Markus Elfring]

…
> The PoC uses pthread barrier synchronization to force both paths through
> the lockless check simultaneously.  It runs on wlan0 created by
> mac80211_hwsim (modprobe mac80211_hwsim radios=2).
> 
> Full PoC (compile with:  gcc -Wall -o poc poc.c -lpthread):

Thanks for your test approach.


…
>      pthread_barrier_init(&barrier_go, NULL, 2);
>      pthread_create(&nt, NULL, nl_thread, NULL);
…

Can there be a need to improve error detection and corresponding exception handling?
https://cmu-sei.github.io/secure-coding-standards/sei-cert-c-coding-standard/rules/posix-pos/pos54-c

Regards,
Markus