lib/58550: ld.elf_so misinterprets certain Arm TLS relocations

[campbell+netbsd%mumble.net@localhost]

>Number:         58550
>Category:       lib
>Synopsis:       ld.elf_so misinterprets certain Arm TLS relocations
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    lib-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Aug 03 21:40:00 +0000 2024
>Originator:     Taylor R Campbell
>Release:        current, 10, 9, ...
>Organization:
The R_NETBSD_TLS_TPREL Foundation
>Environment:
>Description:
1. ld.elf_so misinterprets R_AARCH64_TLS_TPREL and R_ARM_TLS_TPOFF32 relocations, in netbsd-9.  (Fixed in 10 and current.)

2. We have no automatic tests for this issue.
>How-To-Repeat:
dunno
>Fix:
https://mail-index.netbsd.org/source-changes/2020/06/16/msg118406.html
https://mail-index.netbsd.org/source-changes/2020/06/16/msg118407.html

and we need tests