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Subject: Re: [PATCH v6 18/18] crypto: Remove AHASH_REQUEST_ON_STACK
From:   Joe Perches <joe@perches.com>
To:     Kees Cook <keescook@chromium.org>,
        Herbert Xu <herbert@gondor.apana.org.au>
Cc:     Arnd Bergmann <arnd@arndb.de>, Eric Biggers <ebiggers@google.com>,
        "Gustavo A. R. Silva" <gustavo@embeddedor.com>,
        Alasdair Kergon <agk@redhat.com>,
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        Tim Chen <tim.c.chen@linux.intel.com>,
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        "H. Peter Anvin" <hpa@zytor.com>, x86@kernel.org,
        Philipp Reisner <philipp.reisner@linbit.com>,
        Lars Ellenberg <lars.ellenberg@linbit.com>,
        Jens Axboe <axboe@kernel.dk>,
        Giovanni Cabiddu <giovanni.cabiddu@intel.com>,
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        Tudor-Dan Ambarus <tudor.ambarus@microchip.com>,
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Date:   Tue, 24 Jul 2018 10:31:13 -0700
In-Reply-To: <20180724164936.37477-19-keescook@chromium.org>
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         <20180724164936.37477-19-keescook@chromium.org>
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On Tue, 2018-07-24 at 09:49 -0700, Kees Cook wrote:
> All users of AHASH_REQUEST_ON_STACK have been removed from the kernel, so
> drop it entirely so no VLAs get reintroduced by future users.

checkpatch has a test for that.
It could now be removed as well.
---
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 34e4683de7a3..a3517334d661 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -796,7 +796,7 @@ our $declaration_macros = qr{(?x:
 	(?:$Storage\s+)?(?:[A-Z_][A-Z0-9]*_){0,2}(?:DEFINE|DECLARE)(?:_[A-Z0-9]+){1,6}\s*\(|
 	(?:$Storage\s+)?[HLP]?LIST_HEAD\s*\(|
 	(?:$Storage\s+)?${Type}\s+uninitialized_var\s*\(|
-	(?:SKCIPHER_REQUEST|SHASH_DESC|AHASH_REQUEST)_ON_STACK\s*\(
+	(?:SKCIPHER_REQUEST|SHASH_DESC)_ON_STACK\s*\(
 )};