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Date:   Wed, 15 Jul 2020 10:37:01 +0000 (UTC)
From:   Kalle Valo <>
To:     Kees Cook <>
Cc:, Kees Cook <>,
        Linus Torvalds <>,
        Miguel Ojeda <>,
        Alexander Potapenko <>,
        Joe Perches <>,
        Andy Whitcroft <>,,,,,,,,,,,,
Subject: Re: [PATCH v2 04/16] b43: Remove uninitialized_var() usage

Kees Cook <> wrote:

> Using uninitialized_var() is dangerous as it papers over real bugs[1]
> (or can in the future), and suppresses unrelated compiler warnings (e.g.
> "unused variable"). If the compiler thinks it is uninitialized, either
> simply initialize the variable or make compiler changes. As a precursor
> to removing[2] this[3] macro[4], just initialize this variable to NULL.
> No later NULL deref is possible due to the early returns outside of the
> (phy->rev >= 7 && phy->rev < 19) case, which explicitly tests for NULL.
> [1]
> [2]
> [3]
> [4]
> Fixes: 58619b14d106 ("b43: move under broadcom vendor directory")
> Signed-off-by: Kees Cook <>
> Reviewed-by: Nick Desaulniers <>

2 patches applied to wireless-drivers-next.git, thanks.

800e7a205a0f b43: Remove uninitialized_var() usage
f8279dad4e36 rtlwifi: rtl8192cu: Remove uninitialized_var() usage


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