Messages in this thread | | | Date | Thu, 2 Jul 2020 18:16:31 +0800 | From | kernel test robot <> | Subject | net/sched/act_bpf.c:132:35: sparse: sparse: incorrect type in argument 2 (different address spaces) |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: cd77006e01b3198c75fb7819b3d0ff89709539bb commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces date: 2 weeks ago config: x86_64-randconfig-s021-20200702 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-3-gfa153962-dirty git checkout 670d0a4b10704667765f7d18f7592993d02783aa # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>)
>> net/sched/act_bpf.c:132:35: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const *from @@ got unsigned char [noderef] __rcu * @@ net/sched/act_bpf.c:132:35: sparse: expected void const *from net/sched/act_bpf.c:132:35: sparse: got unsigned char [noderef] __rcu * net/sched/act_bpf.c:125:50: sparse: sparse: dereference of noderef expression net/sched/act_bpf.c:125:50: sparse: sparse: dereference of noderef expression
vim +132 net/sched/act_bpf.c
a8cb5f556b5679 Daniel Borkmann 2015-03-20 115 a8cb5f556b5679 Daniel Borkmann 2015-03-20 116 static int tcf_bpf_dump_ebpf_info(const struct tcf_bpf *prog, a8cb5f556b5679 Daniel Borkmann 2015-03-20 117 struct sk_buff *skb) a8cb5f556b5679 Daniel Borkmann 2015-03-20 118 { 7bd509e311f408 Daniel Borkmann 2016-12-04 119 struct nlattr *nla; 7bd509e311f408 Daniel Borkmann 2016-12-04 120 a8cb5f556b5679 Daniel Borkmann 2015-03-20 121 if (prog->bpf_name && a8cb5f556b5679 Daniel Borkmann 2015-03-20 122 nla_put_string(skb, TCA_ACT_BPF_NAME, prog->bpf_name)) a8cb5f556b5679 Daniel Borkmann 2015-03-20 123 return -EMSGSIZE; a8cb5f556b5679 Daniel Borkmann 2015-03-20 124 e86283071fb0ee Daniel Borkmann 2017-06-21 125 if (nla_put_u32(skb, TCA_ACT_BPF_ID, prog->filter->aux->id)) e86283071fb0ee Daniel Borkmann 2017-06-21 126 return -EMSGSIZE; e86283071fb0ee Daniel Borkmann 2017-06-21 127 f1f7714ea51c56 Daniel Borkmann 2017-01-13 128 nla = nla_reserve(skb, TCA_ACT_BPF_TAG, sizeof(prog->filter->tag)); 7bd509e311f408 Daniel Borkmann 2016-12-04 129 if (nla == NULL) 7bd509e311f408 Daniel Borkmann 2016-12-04 130 return -EMSGSIZE; 7bd509e311f408 Daniel Borkmann 2016-12-04 131 f1f7714ea51c56 Daniel Borkmann 2017-01-13 @132 memcpy(nla_data(nla), prog->filter->tag, nla_len(nla)); 7bd509e311f408 Daniel Borkmann 2016-12-04 133 a8cb5f556b5679 Daniel Borkmann 2015-03-20 134 return 0; a8cb5f556b5679 Daniel Borkmann 2015-03-20 135 } a8cb5f556b5679 Daniel Borkmann 2015-03-20 136
:::::: The code at line 132 was first introduced by commit :::::: f1f7714ea51c56b7163fb1a5acf39c6a204dd758 bpf: rework prog_digest into prog_tag
:::::: TO: Daniel Borkmann <daniel@iogearbox.net> :::::: CC: David S. Miller <davem@davemloft.net>
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