linux-kernel - Re: [PATCH] [v2] drbd: dynamically allocate shash descriptor

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Date:   Tue, 23 Jul 2019 07:35:41 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Arnd Bergmann <arnd@...db.de>,
        Philipp Reisner <philipp.reisner@...bit.com>,
        Lars Ellenberg <lars.ellenberg@...bit.com>
Cc:     Roland Kammerer <roland.kammerer@...bit.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Eric Biggers <ebiggers@...gle.com>,
        Kees Cook <keescook@...omium.org>, drbd-dev@...ts.linbit.com,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com
Subject: Re: [PATCH] [v2] drbd: dynamically allocate shash descriptor

On 7/22/19 6:26 AM, Arnd Bergmann wrote:
> Building with clang and KASAN, we get a warning about an overly large
> stack frame on 32-bit architectures:
> 
> drivers/block/drbd/drbd_receiver.c:921:31: error: stack frame size of 1280 bytes in function 'conn_connect'
>        [-Werror,-Wframe-larger-than=]
> 
> We already allocate other data dynamically in this function, so
> just do the same for the shash descriptor, which makes up most of
> this memory.

Applied, thanks.

-- 
Jens Axboe