[Bug dynamic-link/28340] ld.so crashes while loading a DSO with a read-only dynamic section

["cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=28340

--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.34/master branch has been updated by Florian Weimer
<fw@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f42373f911a28d34325a5bfc1ed5a962c89da7eb

commit f42373f911a28d34325a5bfc1ed5a962c89da7eb
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Thu Sep 16 08:15:29 2021 -0700

    ld.so: Replace DL_RO_DYN_SECTION with dl_relocate_ld [BZ #28340]

    We can't relocate entries in dynamic section if it is readonly:

    1. Add a l_ld_readonly field to struct link_map to indicate if dynamic
    section is readonly and set it based on p_flags of PT_DYNAMIC segment.
    2. Replace DL_RO_DYN_SECTION with dl_relocate_ld to decide if dynamic
    section should be relocated.
    3. Remove DL_RO_DYN_TEMP_CNT.
    4. Don't use a static dynamic section to make readonly dynamic section
    in vDSO writable.
    5. Remove the temp argument from elf_get_dynamic_info.

    This fixes BZ #28340.

    Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
    (cherry picked from commit b413280cfb16834450f66f554bc0d618bb513851)

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