[Bug 252549] statically linked threaded binaries have executable thread stacks

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=252549

--- Comment #2 from [email protected] ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=81b3a0a34145ee6c855f50c8035728f76d63c3f0

commit 81b3a0a34145ee6c855f50c8035728f76d63c3f0
Author:     Konstantin Belousov <[email protected]>
AuthorDate: 2021-01-10 03:05:42 +0000
Commit:     Konstantin Belousov <[email protected]>
CommitDate: 2021-01-10 06:25:43 +0000

    libc: implement rtld_get_stack_prot() for real

    which makes stack prot correct for non-main threads created by binaries
    with statically linked libthr.

    Cache result, but do not engage into the full double-checked locking,
    since calculation of the return value is idempotent.

    PR:     252549
    Reported and reviewed by:       emaste
    MFC after:      1 week
    Sponsored by:   The FreeBSD Foundation
    Differential Revision:  https://reviews.freebsd.org/D28075

 lib/libc/gen/dlfcn.c | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

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