Re: [PATCH -next 3/4] cgroup: bpf: Add bpf_skb_in_cgroup_proto
From: kbuild test robot
Date: Tue Jun 21 2016 - 21:28:33 EST
Hi,
[auto build test ERROR on next-20160621]
url: https://github.com/0day-ci/linux/commits/Martin-KaFai-Lau/cgroup-bpf-cgroup2-membership-test-on-skb/20160622-082800
config: i386-randconfig-s1-201625 (attached as .config)
compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All error/warnings (new ones prefixed by >>):
net/core/filter.c: In function 'bpf_skb_in_cgroup':
>> net/core/filter.c:2049:30: error: implicit declaration of function 'sock_cgroup_ptr' [-Werror=implicit-function-declaration]
return cgroup_is_descendant(sock_cgroup_ptr(&sk->sk_cgrp_data), cgrp);
^~~~~~~~~~~~~~~
>> net/core/filter.c:2049:30: warning: passing argument 1 of 'cgroup_is_descendant' makes pointer from integer without a cast [-Wint-conversion]
In file included from include/net/netprio_cgroup.h:17:0,
from include/linux/netdevice.h:48,
from net/core/filter.c:31:
include/linux/cgroup.h:492:20: note: expected 'struct cgroup *' but argument is of type 'int'
static inline bool cgroup_is_descendant(struct cgroup *cgrp,
^~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
vim +/sock_cgroup_ptr +2049 net/core/filter.c
2043 return -E2BIG;
2044
2045 cgrp = READ_ONCE(array->ptrs[i]);
2046 if (unlikely(!cgrp))
2047 return -ENOENT;
2048
> 2049 return cgroup_is_descendant(sock_cgroup_ptr(&sk->sk_cgrp_data), cgrp);
2050 }
2051
2052 static const struct bpf_func_proto bpf_skb_in_cgroup_proto = {
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