<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-toradex.git/drivers/crypto, branch v4.9.115</title>
<subtitle>Linux kernel for Apalis and Colibri modules</subtitle>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/'/>
<entry>
<title>crypto: crypto4xx - fix crypto4xx_build_pdr, crypto4xx_build_sdr leak</title>
<updated>2018-07-22T12:27:36+00:00</updated>
<author>
<name>Christian Lamparter</name>
<email>chunkeey@googlemail.com</email>
</author>
<published>2017-08-25T13:47:24+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=e77e7d8f6bc00ec5d0b1d5194ae8093921f0c058'/>
<id>e77e7d8f6bc00ec5d0b1d5194ae8093921f0c058</id>
<content type='text'>
commit 5d59ad6eea82ef8df92b4109615a0dde9d8093e9 upstream.

If one of the later memory allocations in rypto4xx_build_pdr()
fails: dev-&gt;pdr (and/or) dev-&gt;pdr_uinfo wouldn't be freed.

crypto4xx_build_sdr() has the same issue with dev-&gt;sdr.

Signed-off-by: Christian Lamparter &lt;chunkeey@googlemail.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Amit Pundir &lt;amit.pundir@linaro.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 5d59ad6eea82ef8df92b4109615a0dde9d8093e9 upstream.

If one of the later memory allocations in rypto4xx_build_pdr()
fails: dev-&gt;pdr (and/or) dev-&gt;pdr_uinfo wouldn't be freed.

crypto4xx_build_sdr() has the same issue with dev-&gt;sdr.

Signed-off-by: Christian Lamparter &lt;chunkeey@googlemail.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Amit Pundir &lt;amit.pundir@linaro.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>crypto: crypto4xx - remove bad list_del</title>
<updated>2018-07-22T12:27:36+00:00</updated>
<author>
<name>Christian Lamparter</name>
<email>chunkeey@googlemail.com</email>
</author>
<published>2017-08-25T13:47:14+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=af4b765a780b71f8d823bfd9123bd101fd12eb03'/>
<id>af4b765a780b71f8d823bfd9123bd101fd12eb03</id>
<content type='text'>
commit a728a196d253530f17da5c86dc7dfbe58c5f7094 upstream.

alg entries are only added to the list, after the registration
was successful. If the registration failed, it was never added
to the list in the first place.

Signed-off-by: Christian Lamparter &lt;chunkeey@googlemail.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Amit Pundir &lt;amit.pundir@linaro.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit a728a196d253530f17da5c86dc7dfbe58c5f7094 upstream.

alg entries are only added to the list, after the registration
was successful. If the registration failed, it was never added
to the list in the first place.

Signed-off-by: Christian Lamparter &lt;chunkeey@googlemail.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Amit Pundir &lt;amit.pundir@linaro.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>crypto: omap-sham - fix memleak</title>
<updated>2018-06-16T07:52:35+00:00</updated>
<author>
<name>Bin Liu</name>
<email>b-liu@ti.com</email>
</author>
<published>2018-04-17T19:53:13+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=20f4d771b3098d5d559c0d7c65092f90da4352c1'/>
<id>20f4d771b3098d5d559c0d7c65092f90da4352c1</id>
<content type='text'>
commit 9dbc8a0328efa485a6f5b68b867f9f523a3fbeff upstream.

Fixes: 8043bb1ae03cb ("crypto: omap-sham - convert driver logic to use sgs for data xmit")

The memory pages freed in omap_sham_finish_req() were less than those
allocated in omap_sham_copy_sgs().

Cc: stable@vger.kernel.org
Signed-off-by: Bin Liu &lt;b-liu@ti.com&gt;
Acked-by: Tero Kristo &lt;t-kristo@ti.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 9dbc8a0328efa485a6f5b68b867f9f523a3fbeff upstream.

Fixes: 8043bb1ae03cb ("crypto: omap-sham - convert driver logic to use sgs for data xmit")

The memory pages freed in omap_sham_finish_req() were less than those
allocated in omap_sham_copy_sgs().

Cc: stable@vger.kernel.org
Signed-off-by: Bin Liu &lt;b-liu@ti.com&gt;
Acked-by: Tero Kristo &lt;t-kristo@ti.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>crypto: vmx - Remove overly verbose printk from AES init routines</title>
<updated>2018-06-16T07:52:35+00:00</updated>
<author>
<name>Michael Ellerman</name>
<email>mpe@ellerman.id.au</email>
</author>
<published>2018-05-03T12:29:29+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=ef2aa9f3a78403cd4a50b0e7626b010ca0b71627'/>
<id>ef2aa9f3a78403cd4a50b0e7626b010ca0b71627</id>
<content type='text'>
commit 1411b5218adbcf1d45ddb260db5553c52e8d917c upstream.

In the vmx AES init routines we do a printk(KERN_INFO ...) to report
the fallback implementation we're using.

However with a slow console this can significantly affect the speed of
crypto operations. Using 'cryptsetup benchmark' the removal of the
printk() leads to a ~5x speedup for aes-cbc decryption.

So remove them.

Fixes: 8676590a1593 ("crypto: vmx - Adding AES routines for VMX module")
Fixes: 8c755ace357c ("crypto: vmx - Adding CBC routines for VMX module")
Fixes: 4f7f60d312b3 ("crypto: vmx - Adding CTR routines for VMX module")
Fixes: cc333cd68dfa ("crypto: vmx - Adding GHASH routines for VMX module")
Cc: stable@vger.kernel.org # v4.1+
Signed-off-by: Michael Ellerman &lt;mpe@ellerman.id.au&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 1411b5218adbcf1d45ddb260db5553c52e8d917c upstream.

In the vmx AES init routines we do a printk(KERN_INFO ...) to report
the fallback implementation we're using.

However with a slow console this can significantly affect the speed of
crypto operations. Using 'cryptsetup benchmark' the removal of the
printk() leads to a ~5x speedup for aes-cbc decryption.

So remove them.

Fixes: 8676590a1593 ("crypto: vmx - Adding AES routines for VMX module")
Fixes: 8c755ace357c ("crypto: vmx - Adding CBC routines for VMX module")
Fixes: 4f7f60d312b3 ("crypto: vmx - Adding CTR routines for VMX module")
Fixes: cc333cd68dfa ("crypto: vmx - Adding GHASH routines for VMX module")
Cc: stable@vger.kernel.org # v4.1+
Signed-off-by: Michael Ellerman &lt;mpe@ellerman.id.au&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>crypto: sunxi-ss - Add MODULE_ALIAS to sun4i-ss</title>
<updated>2018-05-25T14:13:05+00:00</updated>
<author>
<name>Peter Robinson</name>
<email>pbrobinson@gmail.com</email>
</author>
<published>2018-02-11T23:15:37+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=e422d89fb59d05fd28a2e9bd9cfb496e3f50be81'/>
<id>e422d89fb59d05fd28a2e9bd9cfb496e3f50be81</id>
<content type='text'>
[ Upstream commit 7c73cf4cc2ac16465f5102437dc0a12d66671bd6 ]

The MODULE_ALIAS is required to enable the sun4i-ss driver to load
automatically when built at a module. Tested on a Cubietruck.

Fixes: 6298e948215f ("crypto: sunxi-ss - Add Allwinner Security System crypto accelerator")
Signed-off-by: Peter Robinson &lt;pbrobinson@gmail.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Sasha Levin &lt;alexander.levin@microsoft.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 7c73cf4cc2ac16465f5102437dc0a12d66671bd6 ]

The MODULE_ALIAS is required to enable the sun4i-ss driver to load
automatically when built at a module. Tested on a Cubietruck.

Fixes: 6298e948215f ("crypto: sunxi-ss - Add Allwinner Security System crypto accelerator")
Signed-off-by: Peter Robinson &lt;pbrobinson@gmail.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Sasha Levin &lt;alexander.levin@microsoft.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>crypto: talitos - fix IPsec cipher in length</title>
<updated>2018-05-09T07:50:19+00:00</updated>
<author>
<name>LEROY Christophe</name>
<email>christophe.leroy@c-s.fr</email>
</author>
<published>2018-03-22T09:57:01+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=23fb8f797e6bee5c39b43e6f4c6f15203ee8ea14'/>
<id>23fb8f797e6bee5c39b43e6f4c6f15203ee8ea14</id>
<content type='text'>
commit 2b1227301a8e4729409694e323b72c064c47cb6b upstream.

For SEC 2.x+, cipher in length must contain only the ciphertext length.
In case of using hardware ICV checking, the ICV length is provided via
the "extent" field of the descriptor pointer.

Cc: &lt;stable@vger.kernel.org&gt; # 4.8+
Fixes: 549bd8bc5987 ("crypto: talitos - Implement AEAD for SEC1 using HMAC_SNOOP_NO_AFEU")
Reported-by: Horia Geantă &lt;horia.geanta@nxp.com&gt;
Signed-off-by: Christophe Leroy &lt;christophe.leroy@c-s.fr&gt;
Tested-by: Horia Geantă &lt;horia.geanta@nxp.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
[backported to 4.9.y, 4.14.y]
Signed-off-by: Horia Geantă &lt;horia.geanta@nxp.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 2b1227301a8e4729409694e323b72c064c47cb6b upstream.

For SEC 2.x+, cipher in length must contain only the ciphertext length.
In case of using hardware ICV checking, the ICV length is provided via
the "extent" field of the descriptor pointer.

Cc: &lt;stable@vger.kernel.org&gt; # 4.8+
Fixes: 549bd8bc5987 ("crypto: talitos - Implement AEAD for SEC1 using HMAC_SNOOP_NO_AFEU")
Reported-by: Horia Geantă &lt;horia.geanta@nxp.com&gt;
Signed-off-by: Christophe Leroy &lt;christophe.leroy@c-s.fr&gt;
Tested-by: Horia Geantă &lt;horia.geanta@nxp.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
[backported to 4.9.y, 4.14.y]
Signed-off-by: Horia Geantă &lt;horia.geanta@nxp.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>crypto: omap-sham - fix closing of hash with separate finalize call</title>
<updated>2018-04-13T17:48:26+00:00</updated>
<author>
<name>Tero Kristo</name>
<email>t-kristo@ti.com</email>
</author>
<published>2017-05-24T07:35:33+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=1fb08363c85da3c3c3c0acb53d7809ca2c72bede'/>
<id>1fb08363c85da3c3c3c0acb53d7809ca2c72bede</id>
<content type='text'>
[ Upstream commit 898d86a565925f09de3d0b30cf3b47ec2e409680 ]

Currently there is an interesting corner case failure with omap-sham
driver, if the finalize call is done separately with no data, but
all previous data has already been processed. In this case, it is not
possible to close the hash with the hardware without providing any data,
so we get incorrect results. Fix this by adjusting the size of data
sent to the hardware crypto engine in case the non-final data size falls
on the block size boundary, by reducing the amount of data sent by one
full block. This makes it sure that we always have some data available
for the finalize call and we can close the hash properly.

Signed-off-by: Tero Kristo &lt;t-kristo@ti.com&gt;
Reported-by: Aparna Balasubramanian &lt;aparnab@ti.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Sasha Levin &lt;alexander.levin@microsoft.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 898d86a565925f09de3d0b30cf3b47ec2e409680 ]

Currently there is an interesting corner case failure with omap-sham
driver, if the finalize call is done separately with no data, but
all previous data has already been processed. In this case, it is not
possible to close the hash with the hardware without providing any data,
so we get incorrect results. Fix this by adjusting the size of data
sent to the hardware crypto engine in case the non-final data size falls
on the block size boundary, by reducing the amount of data sent by one
full block. This makes it sure that we always have some data available
for the finalize call and we can close the hash properly.

Signed-off-by: Tero Kristo &lt;t-kristo@ti.com&gt;
Reported-by: Aparna Balasubramanian &lt;aparnab@ti.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Sasha Levin &lt;alexander.levin@microsoft.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>crypto: omap-sham - buffer handling fixes for hashing later</title>
<updated>2018-04-13T17:48:26+00:00</updated>
<author>
<name>Tero Kristo</name>
<email>t-kristo@ti.com</email>
</author>
<published>2017-05-24T07:35:32+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=c0fe1e29a59f436c10b9ed05df52ab650a9f3727'/>
<id>c0fe1e29a59f436c10b9ed05df52ab650a9f3727</id>
<content type='text'>
[ Upstream commit 5d78d57ede8f9e7f656c610ed25be7be337e0529 ]

Currently, the hash later code only handles the cases when we have
either new data coming in with the request or old data in the buffer,
but not the combination when we have both. Fix this by changing the
ordering of the code a bit and handling both cases properly
simultaneously if needed. Also, fix an issue with omap_sham_update
that surfaces with this fix, so that the code checks the bufcnt
instead of total data amount against buffer length to avoid any
buffer overflows.

Signed-off-by: Tero Kristo &lt;t-kristo@ti.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Sasha Levin &lt;alexander.levin@microsoft.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 5d78d57ede8f9e7f656c610ed25be7be337e0529 ]

Currently, the hash later code only handles the cases when we have
either new data coming in with the request or old data in the buffer,
but not the combination when we have both. Fix this by changing the
ordering of the code a bit and handling both cases properly
simultaneously if needed. Also, fix an issue with omap_sham_update
that surfaces with this fix, so that the code checks the bufcnt
instead of total data amount against buffer length to avoid any
buffer overflows.

Signed-off-by: Tero Kristo &lt;t-kristo@ti.com&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Sasha Levin &lt;alexander.levin@microsoft.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>crypto: s5p-sss - Fix kernel Oops in AES-ECB mode</title>
<updated>2018-02-25T10:05:56+00:00</updated>
<author>
<name>Kamil Konieczny</name>
<email>k.konieczny@partner.samsung.com</email>
</author>
<published>2018-02-07T15:52:09+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=266da9f8d0e650d1d27e06b9cfdbc47e7ad820f4'/>
<id>266da9f8d0e650d1d27e06b9cfdbc47e7ad820f4</id>
<content type='text'>
commit c927b080c67e3e97193c81fc1d27f4251bf4e036 upstream.

In AES-ECB mode crypt is done with key only, so any use of IV
can cause kernel Oops. Use IV only in AES-CBC and AES-CTR.

Signed-off-by: Kamil Konieczny &lt;k.konieczny@partner.samsung.com&gt;
Reported-by: Anand Moon &lt;linux.amoon@gmail.com&gt;
Reviewed-by: Krzysztof Kozlowski &lt;krzk@kernel.org&gt;
Tested-by: Anand Moon &lt;linux.amoon@gmail.com&gt;
Cc: stable@vger.kernel.org # can be applied after commit 8f9702aad138
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit c927b080c67e3e97193c81fc1d27f4251bf4e036 upstream.

In AES-ECB mode crypt is done with key only, so any use of IV
can cause kernel Oops. Use IV only in AES-CBC and AES-CTR.

Signed-off-by: Kamil Konieczny &lt;k.konieczny@partner.samsung.com&gt;
Reported-by: Anand Moon &lt;linux.amoon@gmail.com&gt;
Reviewed-by: Krzysztof Kozlowski &lt;krzk@kernel.org&gt;
Tested-by: Anand Moon &lt;linux.amoon@gmail.com&gt;
Cc: stable@vger.kernel.org # can be applied after commit 8f9702aad138
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>crypto: talitos - fix Kernel Oops on hashing an empty file</title>
<updated>2018-02-25T10:05:50+00:00</updated>
<author>
<name>LEROY Christophe</name>
<email>christophe.leroy@c-s.fr</email>
</author>
<published>2018-01-26T16:09:59+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=c4cef78556df50c3f15dc0e98d92a3098971bde7'/>
<id>c4cef78556df50c3f15dc0e98d92a3098971bde7</id>
<content type='text'>
commit 87a81dce53b1ea61acaeefa5191a0376a2d1d721 upstream.

Performing the hash of an empty file leads to a kernel Oops

[   44.504600] Unable to handle kernel paging request for data at address 0x0000000c
[   44.512819] Faulting instruction address: 0xc02d2be8
[   44.524088] Oops: Kernel access of bad area, sig: 11 [#1]
[   44.529171] BE PREEMPT CMPC885
[   44.532232] CPU: 0 PID: 491 Comm: md5sum Not tainted 4.15.0-rc8-00211-g3a968610b6ea #81
[   44.540814] NIP:  c02d2be8 LR: c02d2984 CTR: 00000000
[   44.545812] REGS: c6813c90 TRAP: 0300   Not tainted  (4.15.0-rc8-00211-g3a968610b6ea)
[   44.554223] MSR:  00009032 &lt;EE,ME,IR,DR,RI&gt;  CR: 48222822  XER: 20000000
[   44.560855] DAR: 0000000c DSISR: c0000000
[   44.560855] GPR00: c02d28fc c6813d40 c6828000 c646fa40 00000001 00000001 00000001 00000000
[   44.560855] GPR08: 0000004c 00000000 c000bfcc 00000000 28222822 100280d4 00000000 10020008
[   44.560855] GPR16: 00000000 00000020 00000000 00000000 10024008 00000000 c646f9f0 c6179a10
[   44.560855] GPR24: 00000000 00000001 c62f0018 c6179a10 00000000 c6367a30 c62f0000 c646f9c0
[   44.598542] NIP [c02d2be8] ahash_process_req+0x448/0x700
[   44.603751] LR [c02d2984] ahash_process_req+0x1e4/0x700
[   44.608868] Call Trace:
[   44.611329] [c6813d40] [c02d28fc] ahash_process_req+0x15c/0x700 (unreliable)
[   44.618302] [c6813d90] [c02060c4] hash_recvmsg+0x11c/0x210
[   44.623716] [c6813db0] [c0331354] ___sys_recvmsg+0x98/0x138
[   44.629226] [c6813eb0] [c03332c0] __sys_recvmsg+0x40/0x84
[   44.634562] [c6813f10] [c03336c0] SyS_socketcall+0xb8/0x1d4
[   44.640073] [c6813f40] [c000d1ac] ret_from_syscall+0x0/0x38
[   44.645530] Instruction dump:
[   44.648465] 38c00001 7f63db78 4e800421 7c791b78 54690ffe 0f090000 80ff0190 2f870000
[   44.656122] 40befe50 2f990001 409e0210 813f01bc &lt;8129000c&gt; b39e003a 7d29c214 913e003c

This patch fixes that Oops by checking if src is NULL.

Fixes: 6a1e8d14156d4 ("crypto: talitos - making mapping helpers more generic")
Cc: &lt;stable@vger.kernel.org&gt;
Signed-off-by: Christophe Leroy &lt;christophe.leroy@c-s.fr&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;


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commit 87a81dce53b1ea61acaeefa5191a0376a2d1d721 upstream.

Performing the hash of an empty file leads to a kernel Oops

[   44.504600] Unable to handle kernel paging request for data at address 0x0000000c
[   44.512819] Faulting instruction address: 0xc02d2be8
[   44.524088] Oops: Kernel access of bad area, sig: 11 [#1]
[   44.529171] BE PREEMPT CMPC885
[   44.532232] CPU: 0 PID: 491 Comm: md5sum Not tainted 4.15.0-rc8-00211-g3a968610b6ea #81
[   44.540814] NIP:  c02d2be8 LR: c02d2984 CTR: 00000000
[   44.545812] REGS: c6813c90 TRAP: 0300   Not tainted  (4.15.0-rc8-00211-g3a968610b6ea)
[   44.554223] MSR:  00009032 &lt;EE,ME,IR,DR,RI&gt;  CR: 48222822  XER: 20000000
[   44.560855] DAR: 0000000c DSISR: c0000000
[   44.560855] GPR00: c02d28fc c6813d40 c6828000 c646fa40 00000001 00000001 00000001 00000000
[   44.560855] GPR08: 0000004c 00000000 c000bfcc 00000000 28222822 100280d4 00000000 10020008
[   44.560855] GPR16: 00000000 00000020 00000000 00000000 10024008 00000000 c646f9f0 c6179a10
[   44.560855] GPR24: 00000000 00000001 c62f0018 c6179a10 00000000 c6367a30 c62f0000 c646f9c0
[   44.598542] NIP [c02d2be8] ahash_process_req+0x448/0x700
[   44.603751] LR [c02d2984] ahash_process_req+0x1e4/0x700
[   44.608868] Call Trace:
[   44.611329] [c6813d40] [c02d28fc] ahash_process_req+0x15c/0x700 (unreliable)
[   44.618302] [c6813d90] [c02060c4] hash_recvmsg+0x11c/0x210
[   44.623716] [c6813db0] [c0331354] ___sys_recvmsg+0x98/0x138
[   44.629226] [c6813eb0] [c03332c0] __sys_recvmsg+0x40/0x84
[   44.634562] [c6813f10] [c03336c0] SyS_socketcall+0xb8/0x1d4
[   44.640073] [c6813f40] [c000d1ac] ret_from_syscall+0x0/0x38
[   44.645530] Instruction dump:
[   44.648465] 38c00001 7f63db78 4e800421 7c791b78 54690ffe 0f090000 80ff0190 2f870000
[   44.656122] 40befe50 2f990001 409e0210 813f01bc &lt;8129000c&gt; b39e003a 7d29c214 913e003c

This patch fixes that Oops by checking if src is NULL.

Fixes: 6a1e8d14156d4 ("crypto: talitos - making mapping helpers more generic")
Cc: &lt;stable@vger.kernel.org&gt;
Signed-off-by: Christophe Leroy &lt;christophe.leroy@c-s.fr&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;


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