From: Alexey Dobriyan <adobriyan@gmail.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: davem@davemloft.net, linux-crypto@vger.kernel.org
Subject: Re: crypto_remove_spawns: BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
Date: Wed, 17 Feb 2010 21:31:09 +0200 [thread overview]
Message-ID: <20100217193109.GB5256@x200> (raw)
In-Reply-To: <20100217003735.GB11975@gondor.apana.org.au>
On Wed, Feb 17, 2010 at 08:37:35AM +0800, Herbert Xu wrote:
> On Tue, Feb 16, 2010 at 09:31:39PM +0200, Alexey Dobriyan wrote:
> >
> > Which codepath exactly?
>
> When a spawn is created the instance associated with it will have
> a zero-initialised cra_users entry.
>
> > BTW, CBC or AES aren't used, just loaded.
>
> Can you boot without aes/cbc loaded and see if it gets automatically
> loaded? PF_KEY users tend to load all possible algorithms when
> they start up.
AES and CBC are indeed loaded even if not used.
xfrm4_tunnel 1701 0
tunnel4 2319 1 xfrm4_tunnel
ipcomp 2063 0
xfrm_ipcomp 5154 1 ipcomp
xfrm4_mode_tunnel 1861 0
deflate 2033 0
zlib_deflate 21231 1 deflate
zlib_inflate 18334 1 deflate
aes_generic 26652 0
des_generic 16263 0
cbc 2945 0
sha1_generic 2223 0
md5 4161 0
hmac 3041 0
cryptomgr 105876 0
aead 6474 1 cryptomgr
pcompress 1767 1 cryptomgr
crypto_null 2910 0
crypto_blkcipher 12080 3 cbc,cryptomgr,crypto_null
crypto_hash 15857 5
sha1_generic,md5,hmac,cryptomgr,crypto_null
crypto_algapi 16753 11
deflate,aes_generic,des_generic,cbc,hmac,cryptomgr,aead,pcompress,crypto_null,crypto_blkcipher,crypto_hash
af_key 30024 0
Race started to become even less reproducible, so I can't confirm your patch quickly. :-(
next prev parent reply other threads:[~2010-02-17 19:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-14 17:45 crypto_remove_spawns: BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 Alexey Dobriyan
2010-02-15 5:27 ` Herbert Xu
2010-02-15 7:47 ` Alexey Dobriyan
2010-02-15 8:11 ` Herbert Xu
2010-02-15 8:14 ` Alexey Dobriyan
2010-02-16 12:02 ` Herbert Xu
2010-02-16 19:31 ` Alexey Dobriyan
2010-02-17 0:37 ` Herbert Xu
2010-02-17 19:31 ` Alexey Dobriyan [this message]
2010-02-18 0:26 ` Herbert Xu
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