[PATCH 0/3] Consolidate static TLS allocation for static binaries, fix extra TLS

[Florian Weimer]

I found a couple of very suspicious, long-term issues in csu/libc-tls.c,
so I'm proposing it to replace with the more extensively tested code
from elf/dl-tls.c.

Tested on aarch64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu,
x86_64-linux-gnu.  Built with build-many-glibcs.py.

I'm going to test this on s390x before committing it.

Thanks,
Florian

Florian Weimer (3):
  elf: Iterate over loaded object list in _dl_determine_tlsoffset
  Consolidate TLS block allocation for static binaries with ld.so
  Linux: Add tests that check that TLS and rseq area are separate

 csu/libc-tls.c                                | 194 ++++--------------
 elf/dl-tls.c                                  | 123 ++++-------
 elf/dl-tls_block_align.h                      |  70 +++++++
 elf/rtld.c                                    |  23 +--
 sysdeps/unix/sysv/linux/Makefile              |  14 ++
 .../linux/tst-rseq-tls-range-4096-static.c    |   1 +
 .../unix/sysv/linux/tst-rseq-tls-range-4096.c |   1 +
 .../unix/sysv/linux/tst-rseq-tls-range-mod.c  |   1 +
 .../sysv/linux/tst-rseq-tls-range-static.c    |   1 +
 sysdeps/unix/sysv/linux/tst-rseq-tls-range.c  | 168 +++++++++++++++
 10 files changed, 341 insertions(+), 255 deletions(-)
 create mode 100644 elf/dl-tls_block_align.h
 create mode 100644 sysdeps/unix/sysv/linux/tst-rseq-tls-range-4096-static.c
 create mode 100644 sysdeps/unix/sysv/linux/tst-rseq-tls-range-4096.c
 create mode 100644 sysdeps/unix/sysv/linux/tst-rseq-tls-range-mod.c
 create mode 100644 sysdeps/unix/sysv/linux/tst-rseq-tls-range-static.c
 create mode 100644 sysdeps/unix/sysv/linux/tst-rseq-tls-range.c


base-commit: 53a71b9f66dbc7f0ce44ec95bff7caa31fa0374b
-- 
2.47.1