netdev - Re: [PATCH v3 2/3] secure_seq: use siphash24 instead of md5

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Message-ID: <201612150517.Wc2xigOi%fengguang.wu@intel.com>
Date:   Thu, 15 Dec 2016 05:44:34 +0800
From:   kbuild test robot <lkp@...el.com>
To:     "Jason A. Donenfeld" <Jason@...c4.com>
Cc:     kbuild-all@...org, Netdev <netdev@...r.kernel.org>,
        kernel-hardening@...ts.openwall.com,
        LKML <linux-kernel@...r.kernel.org>,
        linux-crypto@...r.kernel.org,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        Andi Kleen <ak@...ux.intel.com>,
        David Miller <davem@...emloft.net>,
        David Laight <David.Laight@...lab.com>
Subject: Re: [PATCH v3 2/3] secure_seq: use siphash24 instead of md5_transform

Hi Jason,

[auto build test ERROR on linus/master]
[also build test ERROR on next-20161214]
[cannot apply to v4.9]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Jason-A-Donenfeld/siphash-add-cryptographically-secure-hashtable-function/20161215-041458
config: openrisc-or1ksim_defconfig (attached as .config)
compiler: or32-linux-gcc (GCC) 4.5.1-or32-1.0rc1
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=openrisc 

All errors (new ones prefixed by >>):

>> net/core/secure_seq.c:20:1: error: requested alignment is not a constant
   net/core/secure_seq.c: In function 'secure_tcp_sequence_number':
   net/core/secure_seq.c:99:2: error: requested alignment is not a constant
   net/core/secure_seq.c: In function 'secure_ipv4_port_ephemeral':
   net/core/secure_seq.c:119:2: error: requested alignment is not a constant

vim +20 net/core/secure_seq.c

    14	#include <net/secure_seq.h>
    15	
    16	#if IS_ENABLED(CONFIG_IPV6) || IS_ENABLED(CONFIG_INET)
    17	#include <linux/in6.h>
    18	#include <net/tcp.h>
    19	
  > 20	static u8 net_secret[SIPHASH24_KEY_LEN] __aligned(SIPHASH24_ALIGNMENT);
    21	
    22	static __always_inline void net_secret_init(void)
    23	{

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