linux-hardening - Re: [PATCH][next] powerpc/vas: Fix potential NULL pointer dereference

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Message-Id: <163584790218.1845480.3122470991665187851.b4-ty@ellerman.id.au>
Date:   Tue, 02 Nov 2021 21:11:42 +1100
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Paul Mackerras <paulus@...ba.org>,
        Haren Myneni <haren@...ux.ibm.com>,
        Nicholas Piggin <npiggin@...il.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:     linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH][next] powerpc/vas: Fix potential NULL pointer dereference

On Fri, 15 Oct 2021 00:03:45 -0500, Gustavo A. R. Silva wrote:
> (!ptr && !ptr->foo) strikes again. :)
> 
> The expression (!ptr && !ptr->foo) is bogus and in case ptr is NULL,
> it leads to a NULL pointer dereference: ptr->foo.
> 
> Fix this by converting && to ||
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc/vas: Fix potential NULL pointer dereference
      https://git.kernel.org/powerpc/c/61cb9ac66b30374c7fd8a8b2a3c4f8f432c72e36

cheers