[Bug translator/15148] New: -mfentry workaround fallout: loc2c.c:1436 assertion failure

["fche at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=15148

             Bug #: 15148
           Summary: -mfentry workaround fallout: loc2c.c:1436 assertion
                    failure
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: translator
        AssignedTo: systemtap@sourceware.org
        ReportedBy: fche@redhat.com
    Classification: Unclassified


Further to bug #15123, jbacik reports that an assertion failure can be
triggered on his hand-built kernel:

loc2c.c:1436: c_translate_location: Assertion `ctx->pc == pc_address' failed

It is related to the lookup-retry address not matching the entry-pc one, which
is what we would not expect, so that assertion is likely not necessary.

However, more analysis is required to find out why that particular kernel &
that probe context triggers this behavior.

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