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Date:   Fri, 20 Nov 2020 11:18:17 -0800
From:   Kees Cook <>
To:     Sami Tolvanen <>
Cc:     Johannes Berg <>,
        "David S. Miller" <>,
        Jakub Kicinski <>,,,, Sedat Dilek <>
Subject: Re: [PATCH net] cfg80211: fix callback type mismatches in wext-compat

On Tue, Nov 17, 2020 at 12:59:02PM -0800, Sami Tolvanen wrote:
> Instead of casting callback functions to type iw_handler, which trips
> indirect call checking with Clang's Control-Flow Integrity (CFI), add
> stub functions with the correct function type for the callbacks.
> Reported-by: Sedat Dilek <>
> Signed-off-by: Sami Tolvanen <>

Reviewed-by: Kees Cook <>

Kees Cook

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