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    Subject[PATCH 4.14 152/183] selftests/ftrace: Add some missing glob checks
    Date
    4.14-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>


    [ Upstream commit 97fe22adf33f06519bfdf7dad33bcd562e366c8f ]

    Al Viro discovered a bug in the glob ftrace filtering code where "*a*b" is
    treated the same as "a*b", and functions that would be selected by "*a*b"
    but not "a*b" are not selected with "*a*b".

    Add tests for patterns "*a*b" and "a*b*" to the glob selftest.

    Link: http://lkml.kernel.org/r/20180127170748.GF13338@ZenIV.linux.org.uk

    Cc: Shuah Khan <shuah@kernel.org>
    Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
    Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
    Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc | 6 ++++++
    1 file changed, 6 insertions(+)

    --- a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc
    +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc
    @@ -29,6 +29,12 @@ ftrace_filter_check '*schedule*' '^.*sch
    # filter by *, end match
    ftrace_filter_check 'schedule*' '^schedule.*$'

    +# filter by *mid*end
    +ftrace_filter_check '*aw*lock' '.*aw.*lock$'
    +
    +# filter by start*mid*
    +ftrace_filter_check 'mutex*try*' '^mutex.*try.*'
    +
    # Advanced full-glob matching feature is recently supported.
    # Skip the tests if we are sure the kernel does not support it.
    if grep -q 'accepts: .* glob-matching-pattern' README ; then

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