linux-kernel - Re: [GIT PULL] s390 patches for the 4.19 merge window #2

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Date:   Tue, 4 Sep 2018 17:16:31 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Harald Freudenberger <freude@...ux.ibm.com>
Cc:     Martin Schwidefsky <schwidefsky@...ibm.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-s390 <linux-s390@...r.kernel.org>,
        Heiko Carstens <heiko.carstens@...ibm.com>
Subject: Re: [GIT PULL] s390 patches for the 4.19 merge window #2

On Fri, Aug 24, 2018 at 12:42 AM, Martin Schwidefsky
<schwidefsky@...ibm.com> wrote:
> Harald Freudenberger (5):
>       s390/zcrypt: hex string mask improvements for apmask and aqmask.

This (and an earlier 2017 commit) adds VLAs, which are being
removed[1] from the kernel:

drivers/s390/crypto/ap_bus.c:980:3: warning: ISO C90 forbids variable
length array ‘clrm’ [-Wvla]
drivers/s390/crypto/ap_bus.c:981:3: warning: ISO C90 forbids variable
length array ‘setm’ [-Wvla]
drivers/s390/crypto/ap_bus.c:995:3: warning: ISO C90 forbids variable
length array ‘setm’ [-Wvla]

static int process_mask_arg(const char *str,
                            unsigned long *bitmap, int bits,
                            struct mutex *lock)
...
                DECLARE_BITMAP(clrm, bits);
                DECLARE_BITMAP(setm, bits);

Can someone please adjust this to make these fixed size again?

Thanks!

-Kees

[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com

-- 
Kees Cook
Pixel Security