linux-kernel - Re: [PATCH v2 6/9] trace_uprobe: Support SDT markers having reference count (semaphore)

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Date:   Wed, 4 Apr 2018 23:03:39 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
Cc:     kbuild-all@...org, mhiramat@...nel.org, oleg@...hat.com,
        peterz@...radead.org, srikar@...ux.vnet.ibm.com,
        rostedt@...dmis.org, acme@...nel.org, ananth@...ux.vnet.ibm.com,
        akpm@...ux-foundation.org, alexander.shishkin@...ux.intel.com,
        alexis.berlemont@...il.com, corbet@....net,
        dan.j.williams@...el.com, jolsa@...hat.com, kan.liang@...el.com,
        kjlx@...pleofstupid.com, kstewart@...uxfoundation.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, milian.wolff@...b.com, mingo@...hat.com,
        namhyung@...nel.org, naveen.n.rao@...ux.vnet.ibm.com,
        pc@...ibm.com, tglx@...utronix.de, yao.jin@...ux.intel.com,
        fengguang.wu@...el.com, jglisse@...hat.com,
        Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
Subject: Re: [PATCH v2 6/9] trace_uprobe: Support SDT markers having
 reference count (semaphore)

Hi Ravi,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on tip/perf/core]
[also build test WARNING on v4.16 next-20180404]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Ravi-Bangoria/trace_uprobe-Support-SDT-markers-having-reference-count-semaphore/20180404-201900
reproduce:
        # apt-get install sparse
        make ARCH=x86_64 allmodconfig
        make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

   kernel/trace/trace.h:1298:38: sparse: incorrect type in argument 1 (different address spaces) @@    expected struct event_filter *filter @@    got struct event_filtstruct event_filter *filter @@
   kernel/trace/trace.h:1298:38:    expected struct event_filter *filter
   kernel/trace/trace.h:1298:38:    got struct event_filter [noderef] <asn:4>*filter
>> kernel/trace/trace_uprobe.c:1001:6: sparse: symbol 'trace_uprobe_mmap' was not declared. Should it be static?

Please review and possibly fold the followup patch.

---
0-DAY kernel test infrastructure                Open Source Technology Center
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