Re: [PATCH net-next 3/3] dst_cache: let rt_uncached cope with dst_cache cleanup

[kernel test robot <lkp@intel.com>]

Hi Paolo,

kernel test robot noticed the following build errors:

[auto build test ERROR on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Paolo-Abeni/ipv6-use-a-new-flag-to-indicate-elevated-refcount/20240531-012716
base:   net-next/main
patch link:    https://lore.kernel.org/r/cd710487a34149654a5ff73a8c0df9b1d3fc73a9.1717087015.git.pabeni%40redhat.com
patch subject: [PATCH net-next 3/3] dst_cache: let rt_uncached cope with dst_cache cleanup
config: arm64-defconfig (https://download.01.org/0day-ci/archive/20240531/202405311808.vqBTwxEf-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240531/202405311808.vqBTwxEf-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202405311808.vqBTwxEf-lkp@intel.com/

All errors (new ones prefixed by >>):

   aarch64-linux-ld: Unexpected GOT/PLT entries detected!
   aarch64-linux-ld: Unexpected run-time procedure linkages detected!
   aarch64-linux-ld: net/core/dst_cache.o: in function `dst_cache_set_ip6':
>> net/core/dst_cache.c:123:(.text+0x240): undefined reference to `rt6_uncached_list_add'


vim +123 net/core/dst_cache.c

   109	
   110	#if IS_ENABLED(CONFIG_IPV6)
   111	void dst_cache_set_ip6(struct dst_cache *dst_cache, struct dst_entry *dst,
   112			       const struct in6_addr *saddr)
   113	{
   114		struct dst_cache_pcpu *idst;
   115	
   116		if (!dst_cache->cache)
   117			return;
   118	
   119		idst = this_cpu_ptr(dst_cache->cache);
   120		dst_cache_per_cpu_dst_set(idst, dst,
   121					  rt6_get_cookie(dst_rt6_info(dst)));
   122		if (dst && list_empty(&dst->rt_uncached))
 > 123			rt6_uncached_list_add(dst_rt6_info(dst));
   124	
   125		idst->in6_saddr = *saddr;
   126	}
   127	EXPORT_SYMBOL_GPL(dst_cache_set_ip6);
   128	

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