netdev - Re: [PATCH net-next v2 4/5] ila: Add generic ILA translation facility

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Message-ID: <201512021229.vGO51yxK%fengguang.wu@intel.com>
Date:	Wed, 2 Dec 2015 12:02:13 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Tom Herbert <tom@...bertland.com>
Cc:	kbuild-all@...org, davem@...emloft.net, netdev@...r.kernel.org,
	kernel-team@...com
Subject: Re: [PATCH net-next v2 4/5] ila: Add generic ILA translation facility

Hi Tom,

[auto build test WARNING on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Tom-Herbert/ila-Optimization-to-preserve-value-of-early-demux/20151202-111601
reproduce:
        # apt-get install sparse
        make ARCH=x86_64 allmodconfig
        make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

   include/linux/compiler.h:228:8: sparse: attribute 'no_sanitize_address': unknown attribute
>> net/ipv6/ila/ila_xlat.c:218:24: sparse: incompatible types in comparison expression (different address spaces)
   net/ipv6/ila/ila_xlat.c:269:32: sparse: incompatible types in comparison expression (different address spaces)
   net/ipv6/ila/ila_xlat.c:275:25: sparse: incompatible types in comparison expression (different address spaces)
   net/ipv6/ila/ila_xlat.c:279:25: sparse: incompatible types in comparison expression (different address spaces)
   net/ipv6/ila/ila_xlat.c:315:31: sparse: incompatible types in comparison expression (different address spaces)
   net/ipv6/ila/ila_xlat.c:329:32: sparse: incompatible types in comparison expression (different address spaces)
   net/ipv6/ila/ila_xlat.c:201:23: sparse: incompatible types in comparison expression (different address spaces)
   net/ipv6/ila/ila_xlat.c:514:31: sparse: incompatible types in comparison expression (different address spaces)
   net/ipv6/ila/ila_xlat.c:184:23: sparse: incompatible types in comparison expression (different address spaces)

vim +218 net/ipv6/ila/ila_xlat.c

   202		}
   203	
   204		return NULL;
   205	}
   206	
   207	static inline void ila_release(struct ila_map *ila)
   208	{
   209		kfree_rcu(ila, rcu);
   210	}
   211	
   212	static void ila_free_cb(void *ptr, void *arg)
   213	{
   214		struct ila_map *ila = (struct ila_map *)ptr, *next;
   215	
   216		/* Assume rcu_readlock held */
   217		while (ila) {
 > 218			next = rcu_access_pointer(ila->next);
   219			ila_release(ila);
   220			ila = next;
   221		}
   222	}
   223	
   224	static int ila_add_mapping(struct net *net, struct ila_xlat_params *p)
   225	{
   226		struct ila_net *ilan = net_generic(net, ila_net_id);

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
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