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* [tip:perf/core 18/21] net/dccp/probe.c:166:2: warning: 'register_jprobe' is deprecated
@ 2017-10-20 12:59 kbuild test robot
  0 siblings, 0 replies; only message in thread
From: kbuild test robot @ 2017-10-20 12:59 UTC (permalink / raw)
  To: Masami Hiramatsu; +Cc: kbuild-all, linux-kernel, tipbuild, Ingo Molnar

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf/core
head:   9b17374e11c7ce2cf0b2b990fa4aa0360921aa2b
commit: 590c845930457d25d27dc1fdd964a1ce18ef2d7d [18/21] kprobes: Disable the jprobes APIs
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 6.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 590c845930457d25d27dc1fdd964a1ce18ef2d7d
        # save the attached .config to linux build tree
        make.cross ARCH=ia64 

All warnings (new ones prefixed by >>):

   net/dccp/probe.c: In function 'dccpprobe_init':
>> net/dccp/probe.c:166:2: warning: 'register_jprobe' is deprecated [-Wdeprecated-declarations]
     ret = register_jprobe(&dccp_send_probe);
     ^~~
   In file included from net/dccp/probe.c:26:0:
   include/linux/kprobes.h:471:32: note: declared here
    static inline int __deprecated register_jprobe(struct jprobe *p)
                                   ^~~~~~~~~~~~~~~
   net/dccp/probe.c:170:4: warning: 'register_jprobe' is deprecated [-Wdeprecated-declarations]
       ret = register_jprobe(&dccp_send_probe);
       ^~~
   In file included from net/dccp/probe.c:26:0:
   include/linux/kprobes.h:471:32: note: declared here
    static inline int __deprecated register_jprobe(struct jprobe *p)
                                   ^~~~~~~~~~~~~~~
   net/dccp/probe.c: In function 'dccpprobe_exit':
>> net/dccp/probe.c:190:2: warning: 'unregister_jprobe' is deprecated [-Wdeprecated-declarations]
     unregister_jprobe(&dccp_send_probe);
     ^~~~~~~~~~~~~~~~~
   In file included from net/dccp/probe.c:26:0:
   include/linux/kprobes.h:479:33: note: declared here
    static inline void __deprecated unregister_jprobe(struct jprobe *p)
                                    ^~~~~~~~~~~~~~~~~
--
   net/ipv4/tcp_probe.c: In function 'tcpprobe_init':
>> net/ipv4/tcp_probe.c:280:2: warning: 'register_jprobe' is deprecated [-Wdeprecated-declarations]
     ret = register_jprobe(&tcp_jprobe);
     ^~~
   In file included from net/ipv4/tcp_probe.c:24:0:
   include/linux/kprobes.h:471:32: note: declared here
    static inline int __deprecated register_jprobe(struct jprobe *p)
                                   ^~~~~~~~~~~~~~~
   net/ipv4/tcp_probe.c: In function 'tcpprobe_exit':
>> net/ipv4/tcp_probe.c:298:2: warning: 'unregister_jprobe' is deprecated [-Wdeprecated-declarations]
     unregister_jprobe(&tcp_jprobe);
     ^~~~~~~~~~~~~~~~~
   In file included from net/ipv4/tcp_probe.c:24:0:
   include/linux/kprobes.h:479:33: note: declared here
    static inline void __deprecated unregister_jprobe(struct jprobe *p)
                                    ^~~~~~~~~~~~~~~~~
--
   net/sctp/probe.c: In function 'sctp_setup_jprobe':
>> net/sctp/probe.c:189:2: warning: 'register_jprobe' is deprecated [-Wdeprecated-declarations]
     int ret = register_jprobe(&sctp_recv_probe);
     ^~~
   In file included from net/sctp/probe.c:28:0:
   include/linux/kprobes.h:471:32: note: declared here
    static inline int __deprecated register_jprobe(struct jprobe *p)
                                   ^~~~~~~~~~~~~~~
   net/sctp/probe.c:194:3: warning: 'register_jprobe' is deprecated [-Wdeprecated-declarations]
      ret = register_jprobe(&sctp_recv_probe);
      ^~~
   In file included from net/sctp/probe.c:28:0:
   include/linux/kprobes.h:471:32: note: declared here
    static inline int __deprecated register_jprobe(struct jprobe *p)
                                   ^~~~~~~~~~~~~~~
   net/sctp/probe.c: In function 'sctpprobe_exit':
>> net/sctp/probe.c:240:2: warning: 'unregister_jprobe' is deprecated [-Wdeprecated-declarations]
     unregister_jprobe(&sctp_recv_probe);
     ^~~~~~~~~~~~~~~~~
   In file included from net/sctp/probe.c:28:0:
   include/linux/kprobes.h:479:33: note: declared here
    static inline void __deprecated unregister_jprobe(struct jprobe *p)
                                    ^~~~~~~~~~~~~~~~~

vim +/register_jprobe +166 net/dccp/probe.c

e41542f5 Ian McDonald    2006-09-22  154  
e41542f5 Ian McDonald    2006-09-22  155  static __init int dccpprobe_init(void)
e41542f5 Ian McDonald    2006-09-22  156  {
e41542f5 Ian McDonald    2006-09-22  157  	int ret = -ENOMEM;
e41542f5 Ian McDonald    2006-09-22  158  
e41542f5 Ian McDonald    2006-09-22  159  	init_waitqueue_head(&dccpw.wait);
e41542f5 Ian McDonald    2006-09-22  160  	spin_lock_init(&dccpw.lock);
c1e13f25 Stefani Seibold 2009-12-21  161  	if (kfifo_alloc(&dccpw.fifo, bufsize, GFP_KERNEL))
45465487 Stefani Seibold 2009-12-21  162  		return ret;
d4beaa66 Gao feng        2013-02-18  163  	if (!proc_create(procname, S_IRUSR, init_net.proc_net, &dccpprobe_fops))
e41542f5 Ian McDonald    2006-09-22  164  		goto err0;
e41542f5 Ian McDonald    2006-09-22  165  
965cdea8 Wang Weidong    2013-12-17 @166  	ret = register_jprobe(&dccp_send_probe);
965cdea8 Wang Weidong    2013-12-17  167  	if (ret) {
965cdea8 Wang Weidong    2013-12-17  168  		ret = request_module("dccp");
965cdea8 Wang Weidong    2013-12-17  169  		if (!ret)
965cdea8 Wang Weidong    2013-12-17 @170  			ret = register_jprobe(&dccp_send_probe);
965cdea8 Wang Weidong    2013-12-17  171  	}
965cdea8 Wang Weidong    2013-12-17  172  
e41542f5 Ian McDonald    2006-09-22  173  	if (ret)
e41542f5 Ian McDonald    2006-09-22  174  		goto err1;
e41542f5 Ian McDonald    2006-09-22  175  
e41542f5 Ian McDonald    2006-09-22  176  	pr_info("DCCP watch registered (port=%d)\n", port);
e41542f5 Ian McDonald    2006-09-22  177  	return 0;
e41542f5 Ian McDonald    2006-09-22  178  err1:
ece31ffd Gao feng        2013-02-18  179  	remove_proc_entry(procname, init_net.proc_net);
e41542f5 Ian McDonald    2006-09-22  180  err0:
45465487 Stefani Seibold 2009-12-21  181  	kfifo_free(&dccpw.fifo);
e41542f5 Ian McDonald    2006-09-22  182  	return ret;
e41542f5 Ian McDonald    2006-09-22  183  }
e41542f5 Ian McDonald    2006-09-22  184  module_init(dccpprobe_init);
e41542f5 Ian McDonald    2006-09-22  185  
e41542f5 Ian McDonald    2006-09-22  186  static __exit void dccpprobe_exit(void)
e41542f5 Ian McDonald    2006-09-22  187  {
45465487 Stefani Seibold 2009-12-21  188  	kfifo_free(&dccpw.fifo);
ece31ffd Gao feng        2013-02-18  189  	remove_proc_entry(procname, init_net.proc_net);
e41542f5 Ian McDonald    2006-09-22 @190  	unregister_jprobe(&dccp_send_probe);
e41542f5 Ian McDonald    2006-09-22  191  

:::::: The code at line 166 was first introduced by commit
:::::: 965cdea825693c821d200e38fac9402cde6dce6a dccp: catch failed request_module call in dccp_probe init

:::::: TO: Wang Weidong <wangweidong1@huawei.com>
:::::: CC: David S. Miller <davem@davemloft.net>

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

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