[Bug dynamic-link/34170] elf: IFUNC resolver reading global-dynamic/TLSDESC thread variable crashes inside tls_get_addr

"cvs-commit at gcc dot gnu.org via Glibc-bugs" <[email protected]> Thu, 25 Jun 2026 14:14:38 +0000

Newsgroups	gmane.comp.lib.glibc.bugs
Message-ID	<[email protected]/bugzilla/>

https://sourceware.org/bugzilla/show_bug.cgi?id=34170

--- Comment #2 from Sourceware Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Adhemerval Zanella
<[email protected]>:

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=657fe73fb1ce09c109fffafb16d565eedbbe05ed

commit 657fe73fb1ce09c109fffafb16d565eedbbe05ed
Author: Adhemerval Zanella <[email protected]>
Date:   Fri Jun 19 14:40:03 2026 -0300

    manual: Document indirect functions (IFUNC)

    Add a new section to the Dynamic Linker chapter describing the
    STT_GNU_IFUNC mechanism: the resolver calling convention for each
    supported architecture, when resolvers run, and the functionality
    supported in resolvers (TLS access, stack protector, cross-object
    references) along with the remaining restrictions, reflecting the
    recent ordering fixes (BZ 20680, BZ 23240, BZ 28817, BZ 34164,
    BZ 34170).  Also cross-reference it from the hardening section.

    Reviewed-by: Yury Khrustalev <[email protected]>

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