linux-kernel - Re: BUG: unable to handle kernel paging request in hmac_init

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Message-ID: <20171220230947.GF38504@gmail.com>
Date:   Wed, 20 Dec 2017 15:09:47 -0800
From:   Eric Biggers <ebiggers3@...il.com>
To:     syzbot 
        <bot+428944d1a848e9d7464aa96da32ba353cc812457@...kaller.appspotmail.com>
Cc:     davem@...emloft.net, herbert@...dor.apana.org.au,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: BUG: unable to handle kernel paging request in hmac_init_tfm

On Mon, Dec 18, 2017 at 11:36:01AM -0800, syzbot wrote:
> Hello,
> 
> syzkaller hit the following crash on
> 6084b576dca2e898f5c101baef151f7bfdbb606d
> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/master
> compiler: gcc (GCC) 7.1.1 20170620
> .config is attached

FYI, in linux-next KASAN and other memory debugging options are now behind
CONFIG_DEBUG_MEMORY.  So, I think KASAN isn't getting turned on anymore, despite
the CONFIG_KASAN=y.  (Patch was "lib/: make "Memory Debugging" a menuconfig to
ease disabling it all".)

Eric