[MPTCP] subflow.c:undefined reference to `__crypto_memneq' (fwd)

[MPTCP] subflow.c:undefined reference to `__crypto_memneq' (fwd)

[Mat Martineau]

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I pushed the current export branch to my git.kernel.org repo, which 
triggered the following result.

We've seen this before from a kbuild in January:

https://lists.01.org/hyperkitty/list/mptcp(a)lists.01.org/thread/65P5YLV2JER3QGQIM2746SFK6NGTV2DS/

The conclusion was to add a "select CRYPTO" to the mptcp Kconfig in 
"mptcp: Add handling of incoming MP_JOIN requests", but we haven't updated 
the code yet. I'll send a patch.

The .config does have CONFIG_MPTCP=y, even though that's not in the nios2 
defconfig. I think that means the kbuild team is setting CONFIG_MPTCP in 
their builds.

Mat


---------- Forwarded message ----------
Date: Tue, 11 Feb 2020 15:06:40
From: kbuild test robot <lkp(a)intel.com>
Subject: [martineau:kbuild-mptcp 3/19] subflow.c:undefined reference to
     `__crypto_memneq'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/martineau/linux.git kbuild-mptcp
head:   e4b7e3a8c3a2f84c554b656bbb7ce0b96de6c33f
commit: 98c5c4c35ea6464188e8c343f0441e231e000d2e [3/19] mptcp: Add handling of incoming MP_JOIN requests
config: nios2-3c120_defconfig (attached as .config)
compiler: nios2-linux-gcc (GCC) 7.5.0
reproduce:
         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
         chmod +x ~/bin/make.cross
         git checkout 98c5c4c35ea6464188e8c343f0441e231e000d2e
         # save the attached .config to linux build tree
         GCC_VERSION=7.5.0 make.cross ARCH=nios2

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp(a)intel.com>

All errors (new ones prefixed by >>):

    net/mptcp/subflow.o: In function `subflow_syn_recv_sock':
>> subflow.c:(.text+0x790): undefined reference to `__crypto_memneq'
    subflow.c:(.text+0x790): relocation truncated to fit: R_NIOS2_CALL26 against `__crypto_memneq'

---
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