[Bug gdb/17407] New: Regression for Linux vDSO reading

["jan.kratochvil at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=17407

            Bug ID: 17407
           Summary: Regression for Linux vDSO reading
           Product: gdb
           Version: 7.8
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
          Assignee: jan.kratochvil at redhat dot com
          Reporter: jan.kratochvil at redhat dot com
              Host: x86_64-linux-gnu
            Target: x86_64-linux-gnu

since
    5979d6b69b20a8355ea94b75fad97415fce4788c
   
https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=5979d6b69b20a8355ea94b75fad97415fce4788c
    vdso handling
    https://sourceware.org/ml/binutils/2014-03/msg00082.html
    https://sourceware.org/ml/binutils/2014-04/msg00003.html
    Message-ID:
<A78C989F6D9628469189715575E55B230AA884EB@IRSMSX104.ger.corp.intel.com>
I get on
    kernel-3.16.2-200.fc20.x86_64
    https://koji.fedoraproject.org/koji/buildinfo?buildID=575860
    attaching its vdso.bin.gz
GDB (FSF HEAD 5e43d46791c4c66fd83947a12d4f716b561a9103) regression:
reproducer for Fedora systems (as Fedora glibc is patched):
    ./gdb -ex r --args $PWD/../../glibc-root/lib/ld-linux-x86-64.so.2
--library-path $PWD/../../glibc-root/lib:/lib64 ./gdb
assuming an untested reproducer for more upstream glibc (Debian?); not tested:
    ./gdb -ex start ./gdb
actual result / FAIL:
    Got object file from memory but can't read symbols: File truncated.
expected result / PASS:
    warning: Could not load shared library symbols for linux-vdso.so.1.
    Do you need "set solib-search-path" or "set sysroot"?


[bfd patch] Regression for Linux vDSO in GDB
https://sourceware.org/ml/binutils/2014-09/msg00140.html

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