Re: drivers/net/wireless/ath/ath11k/mac.c:2238:29: warning: 'ath11k_peer_assoc_h_he_limit' reading 16 bytes from a region of size 0

[Arnd Bergmann]

On Mon, Oct 10, 2022, at 6:54 PM, Kalle Valo wrote:
> Naresh Kamboju <naresh.kamboju@xxxxxxxxxx> writes:

>>
>> Build log: https://builds.tuxbuild.com/2F4W7nZHNx3T88RB0gaCZ9hBX6c/
>
> Thanks, I was able to reproduce it now and submitted a patch:
>
> https://patchwork.kernel.org/project/linux-wireless/patch/20221010160638.20152-1-kvalo@xxxxxxxxxx/
>
> But it's strange that nobody else (myself included) didn't see this
> earlier. Nor later for that matter, this is the only report I got about
> this. Arnd, any ideas what could cause this only to happen on GCC 11?
>
> -- 
> https://patchwork.kernel.org/project/linux-wireless/list/
>
> https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

No idea here, though I have not tried to reproduce it. This looks
like a false positive to me, which might be the result of some
missed optimization in the compiler when building with certain
options. I see in the .config that KASAN is enabled, and this sometimes
causes odd behavior like this. If it does not happen without KASAN,
maybe report it as a bug against the compiler.

     Arnd