From: "wcohen at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug translator/27984] stap skipping partially-inlined instance, but it is not inline function actually
Date: Thu, 15 Jul 2021 14:34:48 +0000 [thread overview]
Message-ID: <bug-27984-6586-63ugBMnswM@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-27984-6586@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=27984
--- Comment #5 from William Cohen <wcohen at redhat dot com> ---
There is something odd happening in the mapping of the address back to a name.
The address 0x61b70 appears to be the correct address for
tls_process_client_hello according to nm, but the search is mapping it to
instance state_machine.part.0, 0000000000051540. Systemtap keys off the
".part." in the name to determine that it is an inlined function. Due to the
name mix up in this case systemtap incorrectly determines 0x61b70 is a
partially-inlined function.
Have been using rr (rr-project.org) to work backwards and determine why
dwfl_module_addrinfo is returning the wrong symbol name. The actual selection
of "state_machine.part.0" is occurs in the last line of
__libdwfl_getsym@dwarf_module_getsym.c:197.
--
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next prev parent reply other threads:[~2021-07-15 14:34 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-16 2:26 [Bug translator/27984] New: " zhuizhuhaomeng at gmail dot com
2021-07-14 19:48 ` [Bug translator/27984] " wcohen at redhat dot com
2021-07-14 20:37 ` wcohen at redhat dot com
2021-07-15 0:39 ` lijunlong at openresty dot com
2021-07-15 1:37 ` lijunlong at openresty dot com
2021-07-15 14:34 ` wcohen at redhat dot com [this message]
2021-07-15 15:28 ` wcohen at redhat dot com
2021-07-15 16:22 ` wcohen at redhat dot com
2021-07-16 14:49 ` wcohen at redhat dot com
2021-07-16 18:39 ` wcohen at redhat dot com
2021-07-16 19:07 ` mark at klomp dot org
2021-07-17 0:25 ` lijunlong at openresty dot com
2021-07-17 22:05 ` wcohen at redhat dot com
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