Commit Graph

8 Commits

Author SHA1 Message Date
Szabolcs Nagy
6a3794ea91 Fix off-by-one OOB read in elf/tst-tls20
The int mods[nmods] array on the stack was overread by one.

Reviewed-by: Florian Weimer <fweimer@redhat.com>
2022-10-28 11:16:51 +01:00
Paul Eggert
581c785bf3 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00
Florian Weimer
df4cb2280e elf: Include <stdbool.h> in tst-tls20.c
The test uses the bool type.
2021-11-30 15:39:17 +01:00
Florian Weimer
3c7c511782 elf: Include <stdint.h> in tst-tls20.c
The test uses standard integer types.
2021-11-30 14:35:54 +01:00
Adhemerval Zanella
881b68e45c elf: Fix a wrong array access on tst-tls20
Check on x86_64-linux-gnu with --enable-stack-protector=all.
2021-07-16 08:32:37 -03:00
Adhemerval Zanella
ba33937be2 elf: Fix DTV gap reuse logic (BZ #27135)
This is updated version of the 572bd547d5 (reverted by 40ebfd016a)
that fixes the _dl_next_tls_modid issues.

This issue with 572bd547d5 patch is the DTV entry will be only
update on dl_open_worker() with the update_tls_slotinfo() call after
all dependencies are being processed by _dl_map_object_deps().  However
_dl_map_object_deps() itself might call _dl_next_tls_modid(), and since
the _dl_tls_dtv_slotinfo_list::map is not yet set the entry will be
wrongly reused.

This patch fixes by renaming the _dl_next_tls_modid() function to
_dl_assign_tls_modid() and by passing the link_map so it can set
the slotinfo value so a subsequente _dl_next_tls_modid() call will
see the entry as allocated.

The intermediary value is cleared up on remove_slotinfo() for the case
a library fails to load with RTLD_NOW.

This patch fixes BZ #27135.

Checked on x86_64-linux-gnu.

Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
2021-07-14 15:10:27 -03:00
Szabolcs Nagy
52290d8c04 elf: Fix missing include in test case [BZ #27136]
Broken test was introduced in

  commit 8f85075a2e
  elf: Add a DTV setup test [BZ #27136]
2021-04-15 10:17:04 +01:00
Szabolcs Nagy
8f85075a2e elf: Add a DTV setup test [BZ #27136]
The test dlopens a large number of modules with TLS, they are reused
from an existing test.

The test relies on the reuse of slotinfo entries after dlclose, without
bug 27135 fixed this needs a failing dlopen. With a slotinfo list that
has non-monotone increasing generation counters, bug 27136 can trigger.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2021-04-15 09:30:43 +01:00