[Bug dynamic-link/13862] Reuse of cached stack can cause bounds overrun of thread DTV

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=13862

--- Comment #19 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".

The branch, hjl/pr13862 has been created
        at  b2d53cf4c7bc1fc7e5d92bfe783e8c03439c50bb (commit)

- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b2d53cf4c7bc1fc7e5d92bfe783e8c03439c50bb

commit b2d53cf4c7bc1fc7e5d92bfe783e8c03439c50bb
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Thu Nov 27 05:42:23 2014 -0800

    Resize DTV if the current DTV isn't big enough

    This patch changes _dl_allocate_tls_init to resize DTV if the current DTV
    isn't big enough.  Tested on X86-64, x32 and ia32.

        [BZ #13862]
        * elf/dl-tls.c (oom): Remove #ifdef SHARED/#endif.
        (_dl_static_dtv, _dl_initial_dtv): Moved before ...
        (_dl_resize_dtv): This.  Extracted from _dl_update_slotinfo.
        (_dl_allocate_tls_init): Resize DTV if the current DTV isn't
        big enough.
        (_dl_update_slotinfo): Call _dl_resize_dtv to resize DTV.
        * nptl/Makefile (tests): Add tst-stack4.
        (modules-names): Add tst-stack4mod.
        ($(objpfx)tst-stack4): New.
        (tst-stack4mod.sos): Likewise.
        ($(objpfx)tst-stack4.out): Likewise.
        ($(tst-stack4mod.sos)): Likewise.
        (clean): Likewise.
        * nptl/tst-stack4.c: New file.
        * nptl/tst-stack4mod.c: Likewise.

-----------------------------------------------------------------------

-- 
You are receiving this mail because:
You are on the CC list for the bug.