[Bug nptl/17628] New: nptl_db's td_thr_tls* don't check DTV generation

["aoliva at sourceware dot org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=17628

            Bug ID: 17628
           Summary: nptl_db's td_thr_tls* don't check DTV generation
           Product: glibc
           Version: 2.21
            Status: NEW
          Severity: normal
          Priority: P2
         Component: nptl
          Assignee: aoliva at sourceware dot org
          Reporter: aoliva at sourceware dot org
                CC: drepper.fsp at gmail dot com

td_thr_tlsbase and td_thr_tls_get_addr may return garbage because they fail to
check that the DTV entry refers to the named module, because they don't check
the DTV was updated so as to release earlier uses of the same modid.

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