[Bug translator/12596] New: blacklist is too broad (raw_.*)

[Bug translator/12596] New: blacklist is too broad (raw_.*)

[adrien at kunysz dot be]

http://sourceware.org/bugzilla/show_bug.cgi?id=12596

           Summary: blacklist is too broad (raw_.*)
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: minor
          Priority: P2
         Component: translator
        AssignedTo: systemtap@sourceware.org
        ReportedBy: adrien@kunysz.be


As reported by dpward on IRC, some functions that have no obvious reason to be
blacklisted are "hidden" by the "raw_.*" regular expression. Most notably, the
raw_sendmsg@net/ipv4/raw.c function is not accessible outside of guru mode. A
quick grep of /proc/kallsyms shows other possible casualties, the most obvious
ones being in the following files:

drivers/char/raw.c
net/ieee802154/raw.c
net/ipv4/raw.c
net/can/raw.c

The "raw_.*" filter seems to be targeted at locks but it doesn't specify which
ones so how to fix this properly isn't immediately obvious (to me).

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[Bug translator/12596] blacklist is too broad (raw_.*)

[adrien at kunysz dot be]

http://sourceware.org/bugzilla/show_bug.cgi?id=12596

--- Comment #1 from Adrien Kunysz <adrien at kunysz dot be> 2011-03-20 00:37:35 UTC ---
Example of unexpected result:

# stap -l 'kernel.function("raw_sendmsg")'
semantic error: no match while resolving probe point
kernel.function("raw_sendmsg")

What is expected (as when using guru mode):

# stap -gl 'kernel.function("raw_sendmsg")'
kernel.function("raw_sendmsg@net/ipv4/raw.c:439")

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[Bug translator/12596] blacklist is too broad (raw_.*)

[fche at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=12596

Frank Ch. Eigler <fche at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |fche at redhat dot com
         Resolution|---                         |FIXED

--- Comment #2 from Frank Ch. Eigler <fche at redhat dot com> ---
raw_* was just removed from the blacklist

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